EP2927387B1 - System of roof covering and roof window sealing flashing - Google Patents

System of roof covering and roof window sealing flashing Download PDF

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Publication number
EP2927387B1
EP2927387B1 EP15160219.0A EP15160219A EP2927387B1 EP 2927387 B1 EP2927387 B1 EP 2927387B1 EP 15160219 A EP15160219 A EP 15160219A EP 2927387 B1 EP2927387 B1 EP 2927387B1
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EP
European Patent Office
Prior art keywords
roof
flashing
roof covering
covering
elements
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EP15160219.0A
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German (de)
French (fr)
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EP2927387A1 (en
Inventor
Józef Siedlarz
Waclaw Majoch
Waldemar Wadowski
Slawomir Migacz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fakro PP Sp zoo
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Fakro PP Sp zoo
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Publication of EP2927387A1 publication Critical patent/EP2927387A1/en
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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
    • E04D13/147—Junctions of roof sheathings to chimneys or other parts extending above the roof specially adapted for inclined roofs
    • E04D13/1473—Junctions of roof sheathings to chimneys or other parts extending above the roof specially adapted for inclined roofs specially adapted to the cross-section of the parts extending above the roof
    • E04D13/1475—Junctions of roof sheathings to chimneys or other parts extending above the roof specially adapted for inclined roofs specially adapted to the cross-section of the parts extending above the roof wherein the parts extending above the roof have a generally rectangular cross-section

Definitions

  • the subject of the invention is a system comprising a roof covering and a sealing flashing, for sealing penetrating constructions on the roof, such as roof windows, chimneys, etc. and method for the flashing assembling on the roof with a large metal sheet or a 'Sandwich' roof coverings, where said flashing comprises an additional sealing element.
  • the flashing comprise partly-tilted elements of the upper elements, which are able to deviate angularly in an axis parallel to the longitudinal edges of the upper element and basically perpendicular to the direction of the roof pitch.
  • Each partly-tilted element is inseparably connected with the middle element of the upper element through the canal which drains water.
  • the sealing flashing comprises an upper, a lower and two side elements mounted in an overlapping way around the roof window at the roof covering.
  • the lower sealing flashing element comprising a stiff part and an elastic apron, which elastic apron in the mounted flashing state goes from the under roof covering surface onto the roof covering surface through slits made in the roof covering surface.
  • the aim of the invention is to provide a system of roof covering and roof window sealing flashing and a method of assembling said sealing flashing around the roof window, which would serve tightness for connection of penetrating constructions on the roof with large metal sheet roof covering or 'Sandwich' type roof covering.
  • the solution will be discussed on the basis of a system with a roof window sealing flashing, nevertheless, the sealing flashing may be used in any constructions penetrating the roof.
  • the roof window comprises a frame, made of four arms, and a window sash, which is hang in the frame with the use of a hinge system.
  • a special sealing flashing is needed.
  • the invention refers to the system of roof covering and roof window sealing flashing according to claim 1, where the sealing flashing is adapted to be mounted around the roof window.
  • the flashing comprises an upper, a lower and two side elements, as well as an additional fragment of a cutting from steel sheet which is called an additional sealing element.
  • the upper and the lower, as well as, two side elements of the flashing contain basically two arms, which are perpendicular to one another over a cross-section.
  • the first arm of the flashing, perpendicular to the roof surface is adjacent to the side frame arm, whereas the second one, is on the surface under the roof covering, i.e. on the external surface of battens or rafters.
  • the second arm of the flashing is on the thermal layer surface of this covering.
  • the lower element of the flashing is made of a stiff part, as well as an elastic apron, which can be adjusted to the roof covering surface, on which it is going to be assembled.
  • the elastic apron is an extension of the second arm of the stiff part, which is parallel to the covering surface.
  • a first arm of the stiff part, being perpendicular to the roof, is clamped to the external surface of the frame lower arm.
  • the additional sealing is in the form of metal sheet fragment and it resembles the surface of said roof covering, on which it is supposed to be mounted, as well the additional sealing element of the flashing, seals the place, where the flashing elastic apron goes from under the roof covering onto the roof covering surface.
  • the additional sealing element resembles the covering surface, on which it is supposed to be mounted and is cut from steel sheet fragment which was cut for making a hole in the roof for the window or was cut from another steel sheet fragment.
  • the way of assembling the flashing which is going to be mounted around the roof window, takes place, when the hole in the roof is made. Its dimensions are slightly larger than those of the roof window frame, maintaining a so-called assembly clearance. Afterwards, the upper element of the flashing, the frame and the window sash are mounted in this hole. After mineral wool insulation and the use of vapour-open membrane around the window, assembling of other elements of the sealing flashing is commenced: two side elements and the lower one. The flashing elements are mounted in an overlapping way, one above another, creating frame around the window frame. The upper, the side and the lower flashing elements are inserted under the large roof covering.
  • the thermal layer is needed to be removed first, in order to make it possible to assemble these elements under the covering.
  • a slit Prior to the assembly of the flashing lower element, a slit needs to be done in roof covering which will make it possible to put out the elastic apron of the flashing from under the roof covering onto the roof covering surface.
  • the slits are made on both sides of the apron, however, they are not longer than the width of apron.
  • the width is defined as the smaller dimension of the elastic apron which is adjacent to the external surface of the roof covering. Stiff arms of the flashing elements, perpendicular to the roof surface, are adjacent to the outer surface of side arms of the window frame.
  • the additional sealing elements being made of steel sheets fragments, are covered inside with the sealant layer for example: plastic mass, elastomer, glue or adhesive tape and later they are pressed against the leaky places, on both sides of the apron, where the apron of the lower flashing element goes on the roof covering.
  • the additional sealing element is mounted with the use of fastening means, especially screws. Providing tightness and proper mounting of the additional sealing element is also based on catches, in the form of small metal sheet fragments, being an extension of additional sealing element which are bend on the edge of the roof covering around the roof window frame.
  • the subject of an invention is presented in the examples on the illustration, on which the fig.1 shows a roof window frame mounted on the roof with the flashing, prior to assembling the additional sealing element, whereas the fig.2 shows a roof window frame mounted on the roof with the flashing, after assembling the additional sealing element.
  • the hole for penetrating constructions e.g. a window, a chimney or others
  • the thermal layer of roof covering 1 is partly removed to such extend that inserting elements of the sealing flashing is possible in the following sequence: the upper one 2, side ones 3 and the lower one 4.
  • the roof window frame is mounted after assembling the upper element 2 of the flashing.
  • the flashing elements are mounted also on the outer surface of side arms at the roof window frame by means of fastening means in the form of screws.
  • the lower element 4 of the flashing comprises the apron 5, adjacent to the roof covering surface, which goes from the layer under the roof covering through the slits 9, in the place where the flashing goes on the covering 1.
  • the leak is created in the above mentioned place, which is protected by the use of an additional sealing element 7, which was taken from the previously cut-out fragment of the roof covering 1 and in case of 'Sandwich' type covering, from which the thermal layer was removed manually e.g. with the use of spatula.
  • the additional sealing element 7 comprises catches 6, made of small metal sheets fragments, which are an extension of the additional sealing element 7.
  • the additional sealing element 7 is mounted onto the roof covering 1 with the use of screws 8 and it is sealed with the use of sealant 10 in the form of plastic mass, elastomer glue or adhesive tape.
  • An additional steel sheet sealing element 7 may also be taken from another steel sheet fragment which resembles the roof covering in the place where the leak was created.
  • the example concerns assembling the flashing with an additional sealing element 7 according to the Example I.
  • the additional sealing element 7 is mounted onto the roof covering 1 without catches 6 but by means of screws 8 and it is sealed with the use of the sealant 10 in the form of plastic mass, elastomer, glue or adhesive tape.
  • the solution enables the displacement (e.g. as a result of thermal elongation) of the flashing with additional sealing element with respect to the roof covering, without the loss of tightness in the place, where the flashing goes on the roof covering, according to the solution.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Roof Covering Using Slabs Or Stiff Sheets (AREA)

Description

  • The subject of the invention is a system comprising a roof covering and a sealing flashing, for sealing penetrating constructions on the roof, such as roof windows, chimneys, etc. and method for the flashing assembling on the roof with a large metal sheet or a 'Sandwich' roof coverings, where said flashing comprises an additional sealing element.
  • It is known thanks to the description of Polish patent application P. 392795 which describe a sealing flashing, aiming at sealing roof covering with penetrating constructions. Its shape is adjusted to a penetrating construction. It consists of elements that are made of flat, thin, and partly elastic-deformable material and have geometric-like edges on the surface of their joining together. These edges overlap during assembling. The flashing is characterised in that the elements are connected with click connections which make use of natural elasticity of the material, which the flashing is made of. These click connections are achieved thanks to a seat formed in the lower element and the bulge formed in an upper element. Furthermore, it is known thanks to the German description DE2554341 , a solution for sealing the connection of an elements which go through a roof with its outdoor surface by means of elements made of thin-sided, stiff and deformable material. This solution only protects against typical precipitation. It does not provide any tightness and thermal insulation on the layer under the roofing. What is more it is time consuming while assembling. On the other hand, the description of Polish patent application P. 394891 says about the sealing flashing which consists of a lower element, a side element and an upper element, said flashing is functionally divided into an overlapping and a covering part which are assembled in an overlapping way towards each other and towards the elements of roofing.
  • The flashing comprise partly-tilted elements of the upper elements, which are able to deviate angularly in an axis parallel to the longitudinal edges of the upper element and basically perpendicular to the direction of the roof pitch. Each partly-tilted element is inseparably connected with the middle element of the upper element through the canal which drains water.
  • There is also a known solution published in US5522189A patent application which refers to a roof covering and a roof window sealing flashing, where said sealing flashing is adapted to be mounted around a roof window.
  • The sealing flashing comprises an upper, a lower and two side elements mounted in an overlapping way around the roof window at the roof covering. The lower sealing flashing element comprising a stiff part and an elastic apron, which elastic apron in the mounted flashing state goes from the under roof covering surface onto the roof covering surface through slits made in the roof covering surface.
  • The aim of the invention is to provide a system of roof covering and roof window sealing flashing and a method of assembling said sealing flashing around the roof window, which would serve tightness for connection of penetrating constructions on the roof with large metal sheet roof covering or 'Sandwich' type roof covering.
  • The solution will be discussed on the basis of a system with a roof window sealing flashing, nevertheless, the sealing flashing may be used in any constructions penetrating the roof. The roof window comprises a frame, made of four arms, and a window sash, which is hang in the frame with the use of a hinge system. In order to provide tightness for connection of window and roof construction with a large metal sheet or 'Sandwich' type covering, a special sealing flashing is needed. The invention refers to the system of roof covering and roof window sealing flashing according to claim 1, where the sealing flashing is adapted to be mounted around the roof window. The flashing, according to this solution, comprises an upper, a lower and two side elements, as well as an additional fragment of a cutting from steel sheet which is called an additional sealing element. The upper and the lower, as well as, two side elements of the flashing contain basically two arms, which are perpendicular to one another over a cross-section. The first arm of the flashing, perpendicular to the roof surface, is adjacent to the side frame arm, whereas the second one, is on the surface under the roof covering, i.e. on the external surface of battens or rafters. In case of 'Sandwich' type covering, the second arm of the flashing is on the thermal layer surface of this covering. The lower element of the flashing is made of a stiff part, as well as an elastic apron, which can be adjusted to the roof covering surface, on which it is going to be assembled. The elastic apron is an extension of the second arm of the stiff part, which is parallel to the covering surface. A first arm of the stiff part, being perpendicular to the roof, is clamped to the external surface of the frame lower arm. The additional sealing is in the form of metal sheet fragment and it resembles the surface of said roof covering, on which it is supposed to be mounted, as well the additional sealing element of the flashing, seals the place, where the flashing elastic apron goes from under the roof covering onto the roof covering surface. The additional sealing element resembles the covering surface, on which it is supposed to be mounted and is cut from steel sheet fragment which was cut for making a hole in the roof for the window or was cut from another steel sheet fragment.
  • With respect to the comfort and aesthetics of flashing assembly, the dimensions of additional sealing elements are enough for covering the place, where the flashing goes on the roof covering.
  • The way of assembling the flashing, which is going to be mounted around the roof window, takes place, when the hole in the roof is made. Its dimensions are slightly larger than those of the roof window frame, maintaining a so-called assembly clearance. Afterwards, the upper element of the flashing, the frame and the window sash are mounted in this hole. After mineral wool insulation and the use of vapour-open membrane around the window, assembling of other elements of the sealing flashing is commenced: two side elements and the lower one. The flashing elements are mounted in an overlapping way, one above another, creating frame around the window frame. The upper, the side and the lower flashing elements are inserted under the large roof covering. In case of the 'Sandwich' type covering, the thermal layer is needed to be removed first, in order to make it possible to assemble these elements under the covering. Prior to the assembly of the flashing lower element, a slit needs to be done in roof covering which will make it possible to put out the elastic apron of the flashing from under the roof covering onto the roof covering surface. The slits are made on both sides of the apron, however, they are not longer than the width of apron. The width is defined as the smaller dimension of the elastic apron which is adjacent to the external surface of the roof covering. Stiff arms of the flashing elements, perpendicular to the roof surface, are adjacent to the outer surface of side arms of the window frame. Furthermore, they are mounted by means of fastening screws to said side frame arms. Afterwards, the additional element is mounted on said slits. The additional sealing elements, being made of steel sheets fragments, are covered inside with the sealant layer for example: plastic mass, elastomer, glue or adhesive tape and later they are pressed against the leaky places, on both sides of the apron, where the apron of the lower flashing element goes on the roof covering. The additional sealing element is mounted with the use of fastening means, especially screws. Providing tightness and proper mounting of the additional sealing element is also based on catches, in the form of small metal sheet fragments, being an extension of additional sealing element which are bend on the edge of the roof covering around the roof window frame.
  • The subject of an invention is presented in the examples on the illustration, on which the fig.1 shows a roof window frame mounted on the roof with the flashing, prior to assembling the additional sealing element, whereas the fig.2 shows a roof window frame mounted on the roof with the flashing, after assembling the additional sealing element.
    • Example I
  • In case of large roof covering, the hole for penetrating constructions (e.g. a window, a chimney or others) is made. The example will be discussed with respect to the roof window. In case of 'Sandwich' type covering, after making a hole for window frame and for roof window sash, the thermal layer of roof covering 1 is partly removed to such extend that inserting elements of the sealing flashing is possible in the following sequence: the upper one 2, side ones 3 and the lower one 4. The roof window frame is mounted after assembling the upper element 2 of the flashing. The flashing elements are mounted also on the outer surface of side arms at the roof window frame by means of fastening means in the form of screws. The lower element 4 of the flashing comprises the apron 5, adjacent to the roof covering surface, which goes from the layer under the roof covering through the slits 9, in the place where the flashing goes on the covering 1. The leak is created in the above mentioned place, which is protected by the use of an additional sealing element 7, which was taken from the previously cut-out fragment of the roof covering 1 and in case of 'Sandwich' type covering, from which the thermal layer was removed manually e.g. with the use of spatula. The additional sealing element 7 comprises catches 6, made of small metal sheets fragments, which are an extension of the additional sealing element 7. The additional sealing element 7 is mounted onto the roof covering 1 with the use of screws 8 and it is sealed with the use of sealant 10 in the form of plastic mass, elastomer glue or adhesive tape. An additional steel sheet sealing element 7 may also be taken from another steel sheet fragment which resembles the roof covering in the place where the leak was created.
    • Example II
  • The example concerns assembling the flashing with an additional sealing element 7 according to the Example I. However, the additional sealing element 7 is mounted onto the roof covering 1 without catches 6 but by means of screws 8 and it is sealed with the use of the sealant 10 in the form of plastic mass, elastomer, glue or adhesive tape.
  • The solution enables the displacement (e.g. as a result of thermal elongation) of the flashing with additional sealing element with respect to the roof covering, without the loss of tightness in the place, where the flashing goes on the roof covering, according to the solution.

Claims (7)

  1. A system comprising a roof covering (1) and a roof window sealing flashing, said flashing being adapted to be mounted around a roof window which comprises window frame and window sash, where the flashing comprises upper (2), lower (4) and side (3) elements, mounted in an overlapping way one above another, at a large metal sheet or a Sandwich roof covering (1), creating a frame around the window frame and the flashing elements having one arm perpendicular to the roof surface, adjacent to the external side surface of the window frame, and having a second arm, perpendicular to the first arm, placed in mounted state on the surface under said large metal sheet or said Sandwich roof covering (1), on the external surface of battens or rafters or on the surface of the thermal layer of the Sandwich roof covering (1), said lower (4) flashing element comprising a stiff part and an elastic apron (5), which elastic apron (5) in the mounted flashing state is placed on the roof covering (1) surface, characterised in that said flashing comprisies an additional sealing element (7), which is a steel sheet fragment mounted on an area of roof covering (1) surface, the fragment resembling the surface of the roof covering (1) at said area, where said area is defined as comprising the location of roof covering slits (9) which are passages for the elastic apron of the lower flashing element (4) to go from under the roof covering (1) surface onto the roof covering surface (1).
  2. The system according to claim 1, characterised in that the additional sealing element (7) is taken from the fragment of steel sheet cut-out from the roof covering (1), when making the hole for the roof window frame.
  3. The system according to claim 1 or 2 characterised in that the additional sealing element (7) comprises catches (6) which enable it being assembled on the roof covering (1).
  4. Method of assembling a sealing flashing around a penetrating construction on the roof e.g. around a roof window, chimney and others where the flashing comprises upper (2), lower (4) and two side (3) elements, which are mounted in an overlapping way, one above another under a large metal sheet or a Sandwich roof covering (1), creating a frame around the window frame; the flashing comprising as well an additional sealing element (7), and the flashing elements with one arm perpendicular to the roof surface, are adjacent to the external side surface of the window frame, whereas with their second arm, perpendicular to the first arm they are on the surface under the roof covering (1), i.e. on the external surface of battens or rafters or on the surface of the thermal layer of the Sandwich roof covering (1), wherein a first hole in the roof and in the roof covering (1) for the roof window frame is made, characterised in that after that in said roof covering (1) two slits (9) are made, further the upper element (2) of the flashing is assembled, then the roof window frame, two side elements (3) and the lower element (4); next the apron (5) of the lower element (4) goes through the passages made by said slits (9) onto the roof covering (1), an additional sealing element (7) is mounted on said slits (9), which additional sealing element (7) resembles the surface of the roof covering (1) at the place of the slits (9).
  5. Method of assembling the sealing flashing, according to claim 4, characterised in that additional sealing elements (7) are covered inside with a sealant layer (10) and they are pressed against the large metal sheet roof covering surface (1)at the place of the slits (9), afterwards, fastening screws (8) are used and/or catches (6) in the form of small metal sheet fragments which bend on the edge of roof covering (1), around the roof window window frame.
  6. Method of assembling the sealing flashing, according to claim 5 is characterised in that additional sealing elements (7) which resemble the surface of the Sandwich roof covering (1) with thermal layer and steel sheet layer, are cleaned of said thermal layer; and afterwards, the sealant (10) layer is put on the clean surface and these elements are pressed against the roof covering (1) at the place of the slits (9), and/or catches (6) in the form of small metal sheet fragments which bend on the edge of the roof covering (1), around the roof window casing.
  7. Method of assembling the sealing flashing, according to claims 4 or 5 or 6, is characterised in that plastic mass, elastomer, glue or adhesive tape are the sealants (10).
EP15160219.0A 2014-04-02 2015-03-23 System of roof covering and roof window sealing flashing Active EP2927387B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PL407775A PL407775A1 (en) 2014-04-02 2014-04-02 Sealing flange

Publications (2)

Publication Number Publication Date
EP2927387A1 EP2927387A1 (en) 2015-10-07
EP2927387B1 true EP2927387B1 (en) 2017-05-10

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EP15160219.0A Active EP2927387B1 (en) 2014-04-02 2015-03-23 System of roof covering and roof window sealing flashing

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PL (1) PL407775A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11592197B2 (en) 2018-09-28 2023-02-28 Solatube International, Inc. Bottom-mounted whole house fan assembly

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT143U1 (en) * 1993-06-02 1995-03-27 Prix Helmut Prix Helmut KIT FOR THE PRODUCTION OF A MULTI-PIECE STORAGE OF THE TOWELS BETWEEN A ROOF AREA AND A ROOF PENETRATION

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE555916A (en) *
CH611375A5 (en) * 1975-11-28 1979-05-31 Prix Gmbh Means for enclosing a through-passage in a roof
DE2554341B1 (en) 1975-12-03 1977-06-08 Braas & Co Gmbh Water tight jointing strip for roof tiles - is formed of flexible synthetic material with circular section to fit range of tile sizes
DK44494A (en) * 1994-04-18 1995-10-19 Rasmussen Kann Ind As Covering for roof elements
JP3834497B2 (en) * 2001-09-28 2006-10-18 アサヒゴム株式会社 Waterproof sheet for roof and waterproof construction method using the same
WO2004055292A1 (en) * 2002-12-16 2004-07-01 Vkr Holding A/S Side flashing member and a method of making it
PL223391B1 (en) 2010-10-29 2016-10-31 Fakro Pp Spółka Z Ograniczoną Odpowiedzialnością Flange with a fastening lock, sealing the connection between the roof cover with the roof penetrating construction
PL220274B1 (en) 2011-05-16 2015-09-30 Fakro Pp Spółka Z Ograniczoną Odpowiedzialnością Flange sealing the connection of roof penetrating construction with an adjacent roofing material

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT143U1 (en) * 1993-06-02 1995-03-27 Prix Helmut Prix Helmut KIT FOR THE PRODUCTION OF A MULTI-PIECE STORAGE OF THE TOWELS BETWEEN A ROOF AREA AND A ROOF PENETRATION

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EP2927387A1 (en) 2015-10-07
PL407775A1 (en) 2015-10-12

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