CA1175628A - Roofing system - Google Patents
Roofing systemInfo
- Publication number
- CA1175628A CA1175628A CA000403850A CA403850A CA1175628A CA 1175628 A CA1175628 A CA 1175628A CA 000403850 A CA000403850 A CA 000403850A CA 403850 A CA403850 A CA 403850A CA 1175628 A CA1175628 A CA 1175628A
- Authority
- CA
- Canada
- Prior art keywords
- flashing
- roofing
- weatherproofing
- sheeting
- insulation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000009413 insulation Methods 0.000 claims abstract description 41
- 239000000463 material Substances 0.000 claims description 29
- 239000010410 layer Substances 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 5
- 239000004033 plastic Substances 0.000 claims description 5
- 229920003023 plastic Polymers 0.000 claims description 5
- 239000006260 foam Substances 0.000 claims description 4
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 claims description 2
- 229920002522 Wood fibre Polymers 0.000 claims description 2
- 230000001413 cellular effect Effects 0.000 claims description 2
- 239000007799 cork Substances 0.000 claims description 2
- 239000004795 extruded polystyrene foam Substances 0.000 claims description 2
- 239000011152 fibreglass Substances 0.000 claims description 2
- 239000011521 glass Substances 0.000 claims description 2
- 239000010451 perlite Substances 0.000 claims description 2
- 235000019362 perlite Nutrition 0.000 claims description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 2
- 239000002025 wood fiber Substances 0.000 claims description 2
- 239000011247 coating layer Substances 0.000 claims 1
- 239000004794 expanded polystyrene Substances 0.000 claims 1
- 229920006327 polystyrene foam Polymers 0.000 claims 1
- 239000012528 membrane Substances 0.000 description 8
- 239000002184 metal Substances 0.000 description 4
- 239000004567 concrete Substances 0.000 description 3
- 239000011236 particulate material Substances 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 238000004078 waterproofing Methods 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 241001080526 Vertica Species 0.000 description 1
- 238000004380 ashing Methods 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 229940000425 combination drug Drugs 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 238000005188 flotation Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D13/00—Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
- E04D13/14—Junctions of roof sheathings to chimneys or other parts extending above the roof
- E04D13/1407—Junctions of roof sheathings to chimneys or other parts extending above the roof for flat roofs
- E04D13/1415—Junctions to walls extending above the perimeter of the roof
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Roof Covering Using Slabs Or Stiff Sheets (AREA)
Abstract
ABSTRACT
roof system is disclosed for use on a building having an upright wall and a roof deck extending from the upright wall below the upper edge thereof, the wall and roof deck defining generally vertical and horizontal surfaces, respectively,, and a junction therebetween. The roofing system comprises a roofing weatherproofing member super-posed upon the roof deck, a flashing weatherproofing member which extends horizontally over part of the roofing weather-proofing member and upon the vertical surface to provide a weatherproofing seal about the junction. A roofing insula-tion member is superposed upon the roofing weatherproofing member and a flashing insulation member is superposed over the vertical part of the flashing weatherproofing member.
Means are provided for retaining the flashing weatherproofing and insulation members in an upright position.
roof system is disclosed for use on a building having an upright wall and a roof deck extending from the upright wall below the upper edge thereof, the wall and roof deck defining generally vertical and horizontal surfaces, respectively,, and a junction therebetween. The roofing system comprises a roofing weatherproofing member super-posed upon the roof deck, a flashing weatherproofing member which extends horizontally over part of the roofing weather-proofing member and upon the vertical surface to provide a weatherproofing seal about the junction. A roofing insula-tion member is superposed upon the roofing weatherproofing member and a flashing insulation member is superposed over the vertical part of the flashing weatherproofing member.
Means are provided for retaining the flashing weatherproofing and insulation members in an upright position.
Description
~1~56,~2~
This invention relates to roofin~ s~stems and more particu-larly to roofing and flashing s~stems for use in buildings having gene.rally a hor~zontal surface which meets a vertica:l surface, ~or example a wall, eaves, expansion joint or curb extending above the horizonta~ surface, ~arious roofing weatherproofin~ systems have been in use heretofore~ It i~s common ~or the roofing system to extend in two plane.s r namely the horizontal and vertical plane, The horizontal pl~ne may be insulated and weatherproofed using various kinds of materials. Buildings having a vertical plane which extends upward beyond the horizontal plane are normally ~eatherproofed by flashings of various types, The flashing is normally an extension of th.e roofing weatiherproofing member extending along the vertical plane to envelop the structure to protect it from moisture~
- The roofing systems in common use comprise weatherproof`ing members of one or more layers of roofing membrane, Systems of this type are subject to degradation or deterioration due to the effects of ultra-violet radiation, temperature varia-.
tions, exposure to air and moisture and physical damage.
Over time the membranes tend to develop faults and thus allow`
moisture to seep into the ~ui~ding, Such problems are more pronounced at the vertical surfaces protected by flashings, particularly when flashings comprise bituminous membranes.
In accordance with one aspect of the inventicn, there is provided a roofing system for use on a building defining a generally vertical surface and a generally horizontal surface extending from such generally vertical surface below the upper edge thereof, and a junction therebetween, said roofing system comprising a roofing weatherproofing member super-posed upon said yenerally horizontal surface and extending to said junction; a flashing weatherproof.ing member providing a first portion extending upright to cover said generally 5~
This invention relates to roofin~ s~stems and more particu-larly to roofing and flashing s~stems for use in buildings having gene.rally a hor~zontal surface which meets a vertica:l surface, ~or example a wall, eaves, expansion joint or curb extending above the horizonta~ surface, ~arious roofing weatherproofin~ systems have been in use heretofore~ It i~s common ~or the roofing system to extend in two plane.s r namely the horizontal and vertical plane, The horizontal pl~ne may be insulated and weatherproofed using various kinds of materials. Buildings having a vertical plane which extends upward beyond the horizontal plane are normally ~eatherproofed by flashings of various types, The flashing is normally an extension of th.e roofing weatiherproofing member extending along the vertical plane to envelop the structure to protect it from moisture~
- The roofing systems in common use comprise weatherproof`ing members of one or more layers of roofing membrane, Systems of this type are subject to degradation or deterioration due to the effects of ultra-violet radiation, temperature varia-.
tions, exposure to air and moisture and physical damage.
Over time the membranes tend to develop faults and thus allow`
moisture to seep into the ~ui~ding, Such problems are more pronounced at the vertical surfaces protected by flashings, particularly when flashings comprise bituminous membranes.
In accordance with one aspect of the inventicn, there is provided a roofing system for use on a building defining a generally vertical surface and a generally horizontal surface extending from such generally vertical surface below the upper edge thereof, and a junction therebetween, said roofing system comprising a roofing weatherproofing member super-posed upon said yenerally horizontal surface and extending to said junction; a flashing weatherproof.ing member providing a first portion extending upright to cover said generally 5~
2~
vertical surface, and a second porti`on extending generally horizontally oyer part of the roo~ing weatherproofing member, thereby to provide a weatherproofing seal a~out said junction;
a roofi-ng insulation member $uperposed upon said roofing weatherproofing mem~er and extending over the second portion of the flashing weatherp.roof;ng member substantially to the junction; a flashing ;nsulat~on member superposed in an upright position upon t~e fi`rst porti~on of the flashing weatherproofing member and means for retaining the f].ashing weatherproo~ing and flashing insulation members in an upright position.
In accordance with another aspect of the invention there i5 pro~ided a method of applying a roofing system to a building defining a generally vertical surface and a generally hori-zontal surface extending from said generally vertical surfacebelow the upper edge thereof and a junction therebetween, the method comprising superposing a roofing weatherproofing mem-ber upon said generally horizontal surface; superposing a flashing weatherproofing member having first and second portions at the junction, the first and second portions to extend over the generally vertical and horizontal surfaces respectively; superposing a roofing insulation member upon the roofing weatherproofing member and upon the second portion of the flashing member; superposing a flashing insulation mem ber in an upright position adjacent the first portion to cover substantially all of the first portion; and providing means for retaining the flashing weatherproofing and insulation members in an upright position.
In the drawings which accompany the following specification and claims, Figure 1 is a cut-away side elevational view of a roofing system in accordance with the invention~
~ ~756~1~
~3, Figure 2 is an alternate embodiment o:E the roofin~ system of Fiyure lr and Figure 3 is another alternate em~odiment o-f the roofing system of Figure l, Referring to ~igure 1, a vert~cal ~uilding wall 10 supports a roof deck 12 belo~ the upper ed~e 14 of -the wall lO.
Vertical ~all l~ and roof deck 12 define generally vertical and horlzontal surfaces 16 and 18.respectively,.which conver~e at a junction 20. In the case of an irregular roof deck,~e.g, a deck of steel trusses 21, a base layer 22 of prefa~ricated cementitious ply material or other rigid material~may be laid directly upon the deck. However, where an existing roof deck has a flat surface, such a base layer is generally unnecessaryr A canted strip 24 of wood, concrete, fibrous or metal material may be positioned at the junction 2q,~ the canted surface 26 providing a surface of intermediate gradation relatiye to the vertical and horizontal surfaces for roofing and flashing membranes to be laid thereon, in order to avoid excessîve strain due to bending of membranes.
, . --A roofing weatherproofing member 28 comprising for example, a plurality of layers of roofing felt alternating with layers of bituminous waterproofing material is laid upon the base layer 22, or flat roof deck (not shown~ as the case may be, so that an edge of the member 28 extends at least partly, and preferably fully up the canted surface 26 and terminates at the vertlcal surface. In the case of built-up bituminous roofing systems~ it is common to lay successive roofing felt layers upon the roof deck and to coat each layer of felt with hot liyuid bitumen, thus building up the desired number of layers.
~s~
-4~
Subsequently~ a flashing weatherpr~ofing member 30~ compris ing for exampler one or more l~yexs of roofing felt alterna-ting with layers of hituminous weatherproofing material, is applied to the junction, that is, to the canted surface, preferably in sheets sufficiently wide to partially overlay a horizontally extending portion of the roofing member 28 and to overla~ the vertical wall surface as well, The laid-up flashing member 30 t~us has a portion extending over the part of the roofing member 28 superposed on the canted sur-face 26 and ~as a vertical part 31 and a horizontal part 32 overlapping a horizontal part of mem~er 28. In the case of a ~ituminous flashing, the above application procedure may be used to apply the flashing weatherproofing member 30.
A first securement strip or nailer strip 46, preferably of wood blocking material, but which may also be of concrete,metal or other suitable material, is provided in a width corresponding to the width of the wall 10, and is positioned upon the wall. The upper portion 49 of the sheet of flashing weatherproofing material which extends ~eyond the upper edge of the wall is then superposed upon the first securement strip and folded again at its outer end so as to extend down ward along the outer edge thereof. The end may then be nailed or otherwise secured to the first securemen~ strip.
One advantage of the present arra~gement is that there can be used for the vertical flashing 30 a liquid ~itumen such as that used in conventional roofing systems and the same as that normally used for ma~ing up the roofing weatherproofing mem~er 28, i.e. ~itumen with a relatively low softening temperature of between about 129 and 225F Other types of materials may also be used in eit~er the roofing membrane, the flashing membrane or in both. For example, flexible flashing sheeting material may be used alone or in combina-tion with bituminous coated felt material~ To provide sufficient weatherproo~ing protection, preferably a minimum 7S6~
~5~
of four layers of bituminous coated felt material should be used.
In order to protect the roofing mem~er 28 from damage due to solar radiation, air~ moisture from thermal pressure differentials and physical damage, a roo~ing ;nsulation member 34 is superposed upon the roofing mer~er. Insulation member 34 may suitably comprise one or more sheets of rigid foamed plastic sheeting material which is superposed flat upon the roof to cover virtually the entire surface area thereof, The roofing insulation material preferably extends just to the edge of the vertical surface, thereby covering the horizontally extending portion 32 of the flashing member 3Q and is cut to provide an inclined edge 36 which fits against the portion of the roofing member superposed upon the canted surface, thereby enabling the upper surface 38 of the roofing insulation to extend at least part way to the vertical surface.
A flashing insulation member 40, for example a rigid member of foamed plastic sheeting material is positioned in an up-right position adjacent the vertical portion 31 of theflashing member 30, in order to protect said vertical portion from the deteriorating effects of solar radiation, heat, moisture and physical damage. The flashing insulation mem~er, and~or the roofing insulation member may suitably comprise rigid or semi-rigid sheeting material having the desired insulation characteristics. Thus, it is possible to use a variety of types of materials, e.g. wood fiber board, glass fiber reinforced plastic sheeting, urethane plastic sheeting, P~C, expanded or extruded polystyrene foam sheeting, cork sheeting, phenolic foam sheeting, compressed perlite sheeting, polyethelene foam sheeting and cellular glass sheeting.
To provide protection for the flashing insulation member 40, and in order to secure said member ~0 and the flashing weatherproofing member in a vertical position, a counter-flashing member 42~ preferabl~ a rigid metal sheeting material is superposed vertically over the flashing insula-tion member 40~ -thereby covering su~stantially all of the outer surface of said member with a protective membrane.
The counterflas~ing member ~2 may have at its lower end a horizontal base porti`on ~4 which extends outward upon the roofing insulation member 34.
~ ~ .
The upper end of the counterflashing member is secured to lQ a second nailer strip 47 which is positioned upon the flashing insulation member and adjacent the edge of the first nailer strip~ The counterflashing and upper end portion 49 are held in place by means of a metallic cover 4~ which is secured to the first and second nailer strips respectively by means of nails 50 and 52. If it is desired, a metal wall cladding material (not shown) may be applied to the exterior portion of the wall 10 to extend downward along the wall.
A layer of ballast 45, which may be loose gravel or other 2a particulate material or alternatively one or more slabs of cementitious materials such as paving stones or poured concrete is superposed upon the roofing insulation member 34 and upon the horizontal base portion 44 of the counter- ~
flashing, thereby securing the counterflashing at its lower end by virtue of the weight of the particulate material bearing thereon. In some cases it may be preferable to provide a counterflashing without the ~ase portion 44, and in such cases the lower end of the counterflashing may extend just to the top of the ballast layer.
If it is desired, a ballast separation member 54, for example a relatively thin, porous, non-hydroscopic sheeting material may be interposed between the roof insulation member ~4 and the ballast 45 and extends upwardly between ~L~75~
~7--the counterflas~ing and thç flashing insulation, The purpose of this separ~tion member is to prevent particulate material from entering the joints between individual sheets of insulationr as well ~s to alleviate the degrading effects of ultra~violet rad1ation in the event that -the ballast is dislodged, The separation member also serves to dis-tribute the we;ght of ballast loading upon t~e insulation to prevent flotation of insulation should ponding of water upon the roof surface occur, In the case of flashing in-sulation~ the separation member serves to protect the flash-ing insulation from weathering~
With reference to Figure 2/ there is shown an alternate embodiment of the invention which differs from the embodi~
ment described above in the following ways;
Vertical flashing and insulation members are attached to a vertical wall ~hich extends upwardly beyond the limit of the flashing. For attaching the flashing member insulation 40 and counterflashing 42, there may be provided a wedge-shaped reglet joint 56 in the wall near the upper limit 2G of the flashing and the flashing insulation. A nailer strip 57 and counterflashing 42 are covered hy means of a metallic cover 59 which has a downturned edge 60 extending over the counterflashing 42 and providing an insert portion 62 which is inserted into the joint 5~ and locked therein hy self-lock~ng action of an upturned end 64 in the insert portion.
In Figure 3 there is illustrated yet another embodiment ofthe invention, w~erein the flashing insulation member 70 and metal counterflashing 72 are secured to a vertical curb 74 by means of a metallic cover 76 which has a downturned edge extending over the counterflashing and an opposing upper end portion 78 which extends upwardly along the vertical curb.
A second cover, or equipment flange 80 has a downturned edge which extends over the upper end 78 to provide an additional waterproofing for the counterflashing,
vertical surface, and a second porti`on extending generally horizontally oyer part of the roo~ing weatherproofing member, thereby to provide a weatherproofing seal a~out said junction;
a roofi-ng insulation member $uperposed upon said roofing weatherproofing mem~er and extending over the second portion of the flashing weatherp.roof;ng member substantially to the junction; a flashing ;nsulat~on member superposed in an upright position upon t~e fi`rst porti~on of the flashing weatherproofing member and means for retaining the f].ashing weatherproo~ing and flashing insulation members in an upright position.
In accordance with another aspect of the invention there i5 pro~ided a method of applying a roofing system to a building defining a generally vertical surface and a generally hori-zontal surface extending from said generally vertical surfacebelow the upper edge thereof and a junction therebetween, the method comprising superposing a roofing weatherproofing mem-ber upon said generally horizontal surface; superposing a flashing weatherproofing member having first and second portions at the junction, the first and second portions to extend over the generally vertical and horizontal surfaces respectively; superposing a roofing insulation member upon the roofing weatherproofing member and upon the second portion of the flashing member; superposing a flashing insulation mem ber in an upright position adjacent the first portion to cover substantially all of the first portion; and providing means for retaining the flashing weatherproofing and insulation members in an upright position.
In the drawings which accompany the following specification and claims, Figure 1 is a cut-away side elevational view of a roofing system in accordance with the invention~
~ ~756~1~
~3, Figure 2 is an alternate embodiment o:E the roofin~ system of Fiyure lr and Figure 3 is another alternate em~odiment o-f the roofing system of Figure l, Referring to ~igure 1, a vert~cal ~uilding wall 10 supports a roof deck 12 belo~ the upper ed~e 14 of -the wall lO.
Vertical ~all l~ and roof deck 12 define generally vertical and horlzontal surfaces 16 and 18.respectively,.which conver~e at a junction 20. In the case of an irregular roof deck,~e.g, a deck of steel trusses 21, a base layer 22 of prefa~ricated cementitious ply material or other rigid material~may be laid directly upon the deck. However, where an existing roof deck has a flat surface, such a base layer is generally unnecessaryr A canted strip 24 of wood, concrete, fibrous or metal material may be positioned at the junction 2q,~ the canted surface 26 providing a surface of intermediate gradation relatiye to the vertical and horizontal surfaces for roofing and flashing membranes to be laid thereon, in order to avoid excessîve strain due to bending of membranes.
, . --A roofing weatherproofing member 28 comprising for example, a plurality of layers of roofing felt alternating with layers of bituminous waterproofing material is laid upon the base layer 22, or flat roof deck (not shown~ as the case may be, so that an edge of the member 28 extends at least partly, and preferably fully up the canted surface 26 and terminates at the vertlcal surface. In the case of built-up bituminous roofing systems~ it is common to lay successive roofing felt layers upon the roof deck and to coat each layer of felt with hot liyuid bitumen, thus building up the desired number of layers.
~s~
-4~
Subsequently~ a flashing weatherpr~ofing member 30~ compris ing for exampler one or more l~yexs of roofing felt alterna-ting with layers of hituminous weatherproofing material, is applied to the junction, that is, to the canted surface, preferably in sheets sufficiently wide to partially overlay a horizontally extending portion of the roofing member 28 and to overla~ the vertical wall surface as well, The laid-up flashing member 30 t~us has a portion extending over the part of the roofing member 28 superposed on the canted sur-face 26 and ~as a vertical part 31 and a horizontal part 32 overlapping a horizontal part of mem~er 28. In the case of a ~ituminous flashing, the above application procedure may be used to apply the flashing weatherproofing member 30.
A first securement strip or nailer strip 46, preferably of wood blocking material, but which may also be of concrete,metal or other suitable material, is provided in a width corresponding to the width of the wall 10, and is positioned upon the wall. The upper portion 49 of the sheet of flashing weatherproofing material which extends ~eyond the upper edge of the wall is then superposed upon the first securement strip and folded again at its outer end so as to extend down ward along the outer edge thereof. The end may then be nailed or otherwise secured to the first securemen~ strip.
One advantage of the present arra~gement is that there can be used for the vertical flashing 30 a liquid ~itumen such as that used in conventional roofing systems and the same as that normally used for ma~ing up the roofing weatherproofing mem~er 28, i.e. ~itumen with a relatively low softening temperature of between about 129 and 225F Other types of materials may also be used in eit~er the roofing membrane, the flashing membrane or in both. For example, flexible flashing sheeting material may be used alone or in combina-tion with bituminous coated felt material~ To provide sufficient weatherproo~ing protection, preferably a minimum 7S6~
~5~
of four layers of bituminous coated felt material should be used.
In order to protect the roofing mem~er 28 from damage due to solar radiation, air~ moisture from thermal pressure differentials and physical damage, a roo~ing ;nsulation member 34 is superposed upon the roofing mer~er. Insulation member 34 may suitably comprise one or more sheets of rigid foamed plastic sheeting material which is superposed flat upon the roof to cover virtually the entire surface area thereof, The roofing insulation material preferably extends just to the edge of the vertical surface, thereby covering the horizontally extending portion 32 of the flashing member 3Q and is cut to provide an inclined edge 36 which fits against the portion of the roofing member superposed upon the canted surface, thereby enabling the upper surface 38 of the roofing insulation to extend at least part way to the vertical surface.
A flashing insulation member 40, for example a rigid member of foamed plastic sheeting material is positioned in an up-right position adjacent the vertical portion 31 of theflashing member 30, in order to protect said vertical portion from the deteriorating effects of solar radiation, heat, moisture and physical damage. The flashing insulation mem~er, and~or the roofing insulation member may suitably comprise rigid or semi-rigid sheeting material having the desired insulation characteristics. Thus, it is possible to use a variety of types of materials, e.g. wood fiber board, glass fiber reinforced plastic sheeting, urethane plastic sheeting, P~C, expanded or extruded polystyrene foam sheeting, cork sheeting, phenolic foam sheeting, compressed perlite sheeting, polyethelene foam sheeting and cellular glass sheeting.
To provide protection for the flashing insulation member 40, and in order to secure said member ~0 and the flashing weatherproofing member in a vertical position, a counter-flashing member 42~ preferabl~ a rigid metal sheeting material is superposed vertically over the flashing insula-tion member 40~ -thereby covering su~stantially all of the outer surface of said member with a protective membrane.
The counterflas~ing member ~2 may have at its lower end a horizontal base porti`on ~4 which extends outward upon the roofing insulation member 34.
~ ~ .
The upper end of the counterflashing member is secured to lQ a second nailer strip 47 which is positioned upon the flashing insulation member and adjacent the edge of the first nailer strip~ The counterflashing and upper end portion 49 are held in place by means of a metallic cover 4~ which is secured to the first and second nailer strips respectively by means of nails 50 and 52. If it is desired, a metal wall cladding material (not shown) may be applied to the exterior portion of the wall 10 to extend downward along the wall.
A layer of ballast 45, which may be loose gravel or other 2a particulate material or alternatively one or more slabs of cementitious materials such as paving stones or poured concrete is superposed upon the roofing insulation member 34 and upon the horizontal base portion 44 of the counter- ~
flashing, thereby securing the counterflashing at its lower end by virtue of the weight of the particulate material bearing thereon. In some cases it may be preferable to provide a counterflashing without the ~ase portion 44, and in such cases the lower end of the counterflashing may extend just to the top of the ballast layer.
If it is desired, a ballast separation member 54, for example a relatively thin, porous, non-hydroscopic sheeting material may be interposed between the roof insulation member ~4 and the ballast 45 and extends upwardly between ~L~75~
~7--the counterflas~ing and thç flashing insulation, The purpose of this separ~tion member is to prevent particulate material from entering the joints between individual sheets of insulationr as well ~s to alleviate the degrading effects of ultra~violet rad1ation in the event that -the ballast is dislodged, The separation member also serves to dis-tribute the we;ght of ballast loading upon t~e insulation to prevent flotation of insulation should ponding of water upon the roof surface occur, In the case of flashing in-sulation~ the separation member serves to protect the flash-ing insulation from weathering~
With reference to Figure 2/ there is shown an alternate embodiment of the invention which differs from the embodi~
ment described above in the following ways;
Vertical flashing and insulation members are attached to a vertical wall ~hich extends upwardly beyond the limit of the flashing. For attaching the flashing member insulation 40 and counterflashing 42, there may be provided a wedge-shaped reglet joint 56 in the wall near the upper limit 2G of the flashing and the flashing insulation. A nailer strip 57 and counterflashing 42 are covered hy means of a metallic cover 59 which has a downturned edge 60 extending over the counterflashing 42 and providing an insert portion 62 which is inserted into the joint 5~ and locked therein hy self-lock~ng action of an upturned end 64 in the insert portion.
In Figure 3 there is illustrated yet another embodiment ofthe invention, w~erein the flashing insulation member 70 and metal counterflashing 72 are secured to a vertical curb 74 by means of a metallic cover 76 which has a downturned edge extending over the counterflashing and an opposing upper end portion 78 which extends upwardly along the vertical curb.
A second cover, or equipment flange 80 has a downturned edge which extends over the upper end 78 to provide an additional waterproofing for the counterflashing,
Claims (11)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A roofing system for use on a building defining a generally vertical surface and a horizontal surface extending from said generally vertical surface below an upper edge thereof, and a junction therebetween, said roofing system comprising:
a roofing weatherproofing member superposed upon said generally horizontal surface and extending to said junction;
a flashing weatherproofing member providing a first portion extending upright to cover said generally vertical surface, and a second portion extending generally horizontally over part of said roofing weatherproofing member, thereby to provide a weatherproofing seal about said junction;
a roofing insulation member superposed upon said roofing weatherproofing member and extending over said second portion of said flashing weatherproofing member substantially to said junction;
a flashing insulation member superposed in an upright position upon said first portion of said flashing weatherproofing member; and means for retaining said flashing weatherproofing and flashing insulation members in an upright position.
a roofing weatherproofing member superposed upon said generally horizontal surface and extending to said junction;
a flashing weatherproofing member providing a first portion extending upright to cover said generally vertical surface, and a second portion extending generally horizontally over part of said roofing weatherproofing member, thereby to provide a weatherproofing seal about said junction;
a roofing insulation member superposed upon said roofing weatherproofing member and extending over said second portion of said flashing weatherproofing member substantially to said junction;
a flashing insulation member superposed in an upright position upon said first portion of said flashing weatherproofing member; and means for retaining said flashing weatherproofing and flashing insulation members in an upright position.
2. A roofing system as claimed in claim 1, wherein said flashing member comprises one or more layers of flashing weatherproofing material.
3. A roofing system as claimed in claim 2 wherein said flashing weatherproofing material comprises one or more layers of roofing felt material, each said layer of roofing felt material having a coating layer of bituminous material having a softening temperature of between about 129 and 225°F.
4. A roofing system as claimed in claim 1, wherein said flashing insulation member,comprises rigid sheeting material.
5. A roofing system as claimed in claim 4, wherein said sheeting material comprises foamed plastic sheeting material,
6. A roofing system as claimed in claim 1, wherein said flashing insulation member comprises rigid sheeting material selected from wood fiber board, glass fiber reinforced plastic sheeting, urethane plastic sheeting, PVC sheeting, expanded polystyrene foam sheeting, extruded polystyrene foam sheeting, phenolic foam sheeting, cork sheeting, compressed perlite sheeting, polyethelene foam sheeting and cellular glass sheeting,
7. A roofing system as claimed in claim 1, further com-prising a counterflashing member vertically superposed upon said flashing insulation member, and extending over sub-stantially all of said flashing insulation member and means or attaching said counterflashing member to said vertical surface, thereby to retain said flashing insulation member and said flashing weatherproofing member in an upright position,
8. A roofing insulation system as claimed in claim 7, wherein said counterflashing member is a rigid metallic member.
9. A roofing system as claimed in claim l, wherein a first securement strip is provided at the upper edge of said vertical surface, said flashing weatherproofing member being superposed upon said first securement strip,
10. A roofing system as claimed in claim 7 wherein said means for attaching said counterflashing member com-prises a second securement strip provided above said flashing insulation member and adjacent said first secure-ment strip, said counterflashing member being secured to said second securement strip,
11. A method of applying a roofing system to a building defining a vertical surface and a horizontal surface extend-ing from said vertical surface below the upper edge thereof and a junction therebetween, the method comprising:
superposing a roofing weatherproofing member upon said horizontal surface;
superposing a flashing weatherproofing member having first and second portions at said junction, said first and second portions adapted to extend over said vertical and horizontal surfaces respectively;
superposing a roofing insulation member upon said roofing weatherproofing member and upon the second portion of said flashing weatherproofing member;
superposing a flashing insulation member in an upright position adjacent said first portion to cover substantially all of said first portion; and providing means for retaining said flashing weatherproofing and insulation members in an upright position.
superposing a roofing weatherproofing member upon said horizontal surface;
superposing a flashing weatherproofing member having first and second portions at said junction, said first and second portions adapted to extend over said vertical and horizontal surfaces respectively;
superposing a roofing insulation member upon said roofing weatherproofing member and upon the second portion of said flashing weatherproofing member;
superposing a flashing insulation member in an upright position adjacent said first portion to cover substantially all of said first portion; and providing means for retaining said flashing weatherproofing and insulation members in an upright position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000403850A CA1175628A (en) | 1982-05-27 | 1982-05-27 | Roofing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000403850A CA1175628A (en) | 1982-05-27 | 1982-05-27 | Roofing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1175628A true CA1175628A (en) | 1984-10-09 |
Family
ID=4122877
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000403850A Expired CA1175628A (en) | 1982-05-27 | 1982-05-27 | Roofing system |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1175628A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0578615A1 (en) * | 1992-07-02 | 1994-01-12 | HUBER, Peter | Joining element, connecting the external insulation of a wall to a flat roof |
-
1982
- 1982-05-27 CA CA000403850A patent/CA1175628A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0578615A1 (en) * | 1992-07-02 | 1994-01-12 | HUBER, Peter | Joining element, connecting the external insulation of a wall to a flat roof |
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| MKEC | Expiry (correction) | ||
| MKEX | Expiry |