DK179259B1

DK179259B1 - Dormer assembly

Info

Publication number: DK179259B1
Application number: DKPA201770373A
Authority: DK
Inventors: Charlotte Schiøler; Leif Schack Østergaard; Pernille Haargaard
Original assignee: Vkr Holding As
Priority date: 2017-05-24
Filing date: 2017-05-24
Publication date: 2018-03-12
Also published as: DE202018100516U1; DK201770373A1; DK179259B9

Abstract

A dormer assembly comprising a cheek comprising a first section and second section, wherein the sections each has a first cathetus adjoining the sections, such that the first catheti of sections are coincident and the cheek substantially forms an triangle coincident with the sections, where the first catheti of the sections meet in an angle. The sections each has a second cathetus extending along a side of the triangle opposing the angle, the sections each have a hypotenuse, where the cheek comprises a support structure extending along the catheti of the second section, and along the hypotenuse of the first section.

Description

<¹θ> DANMARK (10)

<¹²> PATENTSKRIFT

Patent- og

Varemærkestyrelsen (51) Int.CI.: E 04 B 7/18(2006.01) E 04 B 1/18(2006.01) E 04 D 13/02 (2006.01) (21) Ansøgningsnummer: PA 2017 70373 (22) Indleveringsdato: 2017-05-24 (24) Løbedag: 2017-05-24 (41) Aim. tilgængelig: 2018-03-12 (45) Patentets meddelelse bkg. den: 2018-03-12 (73) Patenthaver: VKR Holding A/S, Breeltevej 18, 2970 Hørsholm, Danmark (72) Opfinder: Charlotte Schiøler, Sønderskovvej 150, 7080 Børkop, Danmark Leif Schack Østergaard, Solsvinget 10, 8700 Horsens, Danmark Pernille Haargaard, Bjergene 28, 8700 Horsens, Danmark (74) Fuldmægtig: Awapatent A/S, Strandgade 56,1401 København K, Danmark (54) Benævnelse: Dormer assembly (56) Fremdragne publikationer:

EP 1645695 A2 DE 202007016735 U1 DE 102006032889 A1 GB 2501885 A (57) Sammendrag:

Fortsættes ...

Fig. 1

This invention relates to a shed dormer assembly adapted to be installed in a pitched roof, wherein the shed dormer assembly comprises a dormer cheek, the dormer cheek comprises a right angled triangular first section and a right angled triangular adjoining second section, wherein the first section and the second section each has a first cathetus at which the second and the first section is adjoined along, such that the first catheti of the first and second sections are coincident and that the outline of the dormer cheek substantially forms an obtuse triangle coincident with the first and the second section, where the first catheti of the first and second sections meet in an obtuse angle of the obtuse triangle, the first and second section each has a second cathetus extending along a side of the obtuse triangle opposing the obtuse angle, the first section and the second section each have a hypotenuse.

When installing a shed dormer it is important to obtain a sufficient redistribution of the forces acting upon the various components.

In the prior art redistribution of forces is obtained by mounting vertical rafters underpinning a dormer roof.

It is a problem with such dormers, that the vertical rafters are mounted individually and extra care must be taken by the person installing to ensure that sufficient number of rafters are used and that their individual position is correct.

Furthermore, it is a problem to ensure sufficient watertightness and insulation of the installation.

It is an object of the invention to provide a shed dormer that overcome the above problems. In a first aspect, this and further objects are met by a shed dormer of the kind mentioned in the introduction, which is furthermore characterized in that the dormer cheek comprises a support structure extending along the first and second catheti of the second section, and along the hypotenuse of the first section.

Consequently, the ability of the dormer cheek to redistribute the forces is enhanced and simplyfied.

The support structure may be made of wood, plywood or metal.

The support structure may be integrally formed with the dormer cheek or it may be provided as a separate piece to be mounted during installation.

In some embodiments the second section may comprise at least one strength enhancing cassette adapted to extend between the second cathetus and the hypothenuse of the second section, preferably a side of the cassette is coincident with the first catheti of the first and second sections. Thereby the strength enhancing cassette may be adapted to extend between the pitched roof and a side of the dormer adapted to receive a window.

Consequently, the ability of the dormer cheek to redistribute forces is enhanced.

The strength enhancing cassette may extend across at least 50% the thickness of the dormer cheek in a direction perpendicular to the plane expanded by the obtuse triangle, preferably at least 75%, most preferably at least 90% of the thickness of the dormer cheek.

The strength enhancing cassette may be integrally formed with the second section or the dormer cheek or it may be provided as a separate piece to be mounted during installation.

The strength enhancing cassette may be made from wood, plywood and/or insulation material.

In some embodiments the strength enhancing cassette comprises a support frame, preferably made of wood, framing a piece of insulation material.

Consequently, the ability of the strength enhancing cassette to distribute forces acting on the dormer cheek is improved.

The support frame may extend across at least 50% of the thickness of the dormer cheek preferably at least 80%.

The dormer cheek may further be provided with an exterior weatherproof layer such as a covering and/or an interior covering layer such as plaster.

The shed dormer assembly may comprise a dormer roof and a window side adapted to receive a window.

In some embodiments the dormer roof is provided with insulating material constituting one piece.

Consequently, the dormer roof is insulated and unnecessary loss of heat is avoided.

The insulating material may cover at least 85% of the dormer roof surface, preferably 90% of the dormer roof surface.

The dormer roof maypreferably comprise a plate element.

The insulating material may be positioned centrally on the dormer roof surface, such that one or more of the edges of the plate element is not covered by insulation but may be used for attachment to adjacent surfaces.

The insulating material may thus be positioned, such that an uncovered portion of the surface of the dormer roof is provided on at least one side of the dormer roof, whereby it may rest on the dormer cheek.

The insulating material may be of mineral wool, glass wool, stone wool etc.

In some embodiments the pitched roof may comprise at least one batten and the shed dormer further comprises at least one trimmer having a first end and a second end, where the at least one trimmer is adapted to extend in parallel to the hypotenuses of the first and second sections, wherein the second end has at least one cutout, adapted to accommodate the at least one batten extending perpendicularly to the trimmer. Consequently, no modifications of the trimmer in situ is required in order to attach the trimmers to the existing pitched roof.

The trimmer may be made from wood, plywood, aluminum and/or comprise insulation material.

The trimmer may be provided with telescopic means whereby the length of the trimmer can be changed to fit the installation.

In some embodiments the support structure further comprises a plate element covering the dormer cheek.

The plate element may be made from wood, plywood or aluminum.

The plate element may be installed on the dormer cheek or be provided as an individual component to be mounted during installation.

The plate element may be provided with a waterproof membrane or roofing felt.

The plate element may cover only a portion of the dormer cheek, e.g. the first section and/or the second section.

In some embodiments the dormer cheek is provided with insulating material preferably on an internal side of the plate element framed by the support structure.

Consequently, easy installation of insulating material is facilitated.

The insulating material may be provided in the first section and/or the second section.

The insulating material may be provided attached to the plate element.

The insulating material may be provided attached to the support structure.

The insulation material may be provided preattached to the dormer cheek when it arrives on the construction site.

By providing the insulation material attached, an easier installation process may be facilitated.

The insulation material may be mineral wool, stone wooll, glass wool etc.

In some embodiments the first section is provided with a further piece of insulation material, at least partially covering the first piece of insulation material and at least partially covering the support structure extending along the hypotenuse of the first section. Consequently, an improved heat insulation is provided.

The second piece of insulation material may be positioned such that it matches the hypotenuse of the second section in the point, where the second piece of insulation adjoins the hypotenuse of the second section.

In some embodiments the first section is adapted to extend between the pitched roof and the dormer roof. Consequently, easy installation of the dormer roof is facilitated.

The dormer roof may rest upon the first section of the dormer cheek.

The dormer roof may be provided integral with the first section.

Insulation material may be defined as a material having a U-value below 0.42 W/m²K, preferably below 0.37 W/m²K.

In some embodiments the shed dormer assembly comprises a window and a flashing covering an intersection of the second cathetus and the hypothenuse of the second section, and a part of the pitched roof, where the flashing has an upright edge adapted to be arranged adjoining a corner of the window, wherein a height of the upright edge is adapted to conform to a thickness of the lower corner.

Consequently, a watertight transition between the dormer and the roof is facilitated. Furthermore, the flashing ensures an efficient redirection of rain water.

The flashing may be provided as an individual component or as an integral component of the dormer.

The flashing may be made from a material allowing it to be bent, where by the height of the upright edge can be manually adapted to conform to a thickness of the lower corner.

The upright edge of the flashing may have a height of at least 1 cm, preferably at least 5 cm.

The flashing may comprise a flashing section attached to the upright edge, whereby water can be directed away from the window.

A shed dormer may have a single flat plane roof, but in this case it is sloped in the same direction as the pitched roof only at a shallower angle.

The dormer cheek according to the invention may be provided as a prefabricated piece, when being delivered at the installation site.

In the following, the invention will be described in further detail with reference to the drawings in which:

fig. 1 shows a perspective view of a first embodiment of a shed dormer assembly, figs. 2a and 3 show a perspective view of a second embodiment of a shed dormer assembly from different sides, fig. 2b show a perspective view of a third embodiment of a shed assembly, fig. 4 shows a fourth embodiment of the shed dormer assembly adpated to receive multiple windows, fig 5a-b show two embodiments of the dormer cheek, fig. 6 shows different embodiments of a dormer roof, fig. 7 shows an embodiment of a trimmer, fig. 8 shows an embodiment of a flashing.

Fig. 1 shows an embodiment of a shed dormer assembly 1 in a perspective view and from the side. Figs. 2a and 3 show a second embodiment of the shed dormer assembly 1 in a perspective view from the front and from the back, respectively. The difference between the embodiment in fig. 1 and the embodiment in figs. 2a and 3 is that in fig. 1 a window 2 is shown, whereas in figs. 2a and 3 the window 2 has been left out. The remaining elements are the same. The difference between the embodiment in fig. 2a and the embodiment in fig. 2b is that a plate element 41 is arranged on the outside of each dormer cheek 3 in fig. 2b. Furthermore, a plate element 49 is placed onto the strength enhancing cassette 44.

Both embodiments in fig 2a and 2b is provided with a first piece of insulation 43, 45 on the first 33 and the second section 35 respectively. Each of the first 33 and second section 35 is further provided with a second piece of insulation material 48, 49 completely or partly covering the first piece of insulation material, respectively.

The shed dormer assembly 1 comprises a dormer roof 5, a window 2 (fig. 1) forming part of a window side and two dormer cheeks 3. Each dormer cheek 3 comprises a right angled triangular first section 33 and a right angled triangular adjoining second section 35. The first section 33 and the second section 35 each has a first cathetus 37 at which the second section 35 and the first section 33 is adjoined, such that the first catheti 37 of the first 33 and second section 35 meet in an obtuse angle 38 of an obtuse triangle 39. Each dormer cheek 1 comprises a support structure 36 extending along the first and second cathetus of the second section 35, and along the hypotenuse 40 of the first section 33.

The shed dormer assembly 1 comprises a dormer roof 5 and two dormer cheeks 3, each dormer cheek 3 comprises a right angled triangular first section 33 and a right angled triangular adjoining second section 35. The first section 33 is adapted to extend between the pitched roof and the dormer roof 5. The second section 35 is adapted to extend between the window 2 and the pitched roof. The second catheti are adapted to extend along the pitched roof. Each dormer cheek comprises a rigid plate element 41 extending along both the first and the second section. Insulating material is provided on the dormer cheek 3. A piece of insulation 43, 45 is provided on each of the first and the second sections 33, 35 respectively, on the inside of the plate element 41. The plate element 41 may be made of plywood or a similar material.

The dormer roof 5 comprises plate element 51 and insulating material 53, where the insulating material 53 is arranged on an inward facing side of the plate element 51. The insulating material 53 constitutes one piece. The plate element 51 may be made of plywood or a similar material.

Each dormer cheek 3 comprises a support structure 36 as shown in fig.

1. A strength enhancing cassette 44 comprises a wooden frame structure 47, framing a piece of insulation material 46. The strength enhancing cassette 44 facilitates a redistribution of the forces acting onto the dormer cheek 3.

The dormer roof 5 is arranged on the first section 33 of the dormer cheeks 3.

A dormer window may be arranged on the second section 35 of each dormer cheek 3.

Each dormer cheek 3 is provided with a first piece of insulating material 43 on an internal side of the plate element 41 and framed by the support structure 36.

The first section 33 is provided with a piece of insulation material 48, at least partially covering the first piece of insulation material 43 and at least partially covering the support structure 36 extending along the hypotenuse 40 of the first section 33.

Fig. 4 shows a third embodiment of the shed dormer assembly 1. The shed dormer assembly 1 comprises the same features as described in figs. 1 to 3 but is adapted to receive more than one window.

The third embodiment differs from the first and second embodiment in that the second section 35 of each dormer cheek 3 comprises two strength enhancing cassettes 44 as a support for the extra load from the additional windows.

The shed dormer assembly 1 further comprises a trimmer 7 having a first end 71 and a second end 73, where the at least one trimmer 7 extending in parallel to the dormer cheeks 3, the dormer roof 5 and the windows. The second end 73 has a cutout 75, adapted to accommodate a batten of the roof, extending perpendicular to the trimmer 7.

The trimmer 7 may be used for installing more than one window in the shed dormer assembly 1. The trimmer 7 assist in redistributing the forces acting upon the shed dormer assembly 1.

The dormer roof 5 is arranged on the first end 71 of the trimmer 7 and the first section 33 of the dormer cheeks 3.

In the embodiment in Fig. 4 the shed dormer assembly 1 comprises two trimmers 7, thereby providing means for installing three windows in the shed dormer assembly 1 as each window is positioned between the dormer cheeks and a trimmer or between two trimmers.

Fig. 5a shows an embodiment of the dormer cheek 3 to be installed in a dormer 1 without a trimmer 7. The dormer cheek 3 has a right angled triangular first section 33 and a right angled adjoining second section 35. The dormer cheek 3 comprises a support structure 36 extending along the first and second cathetus of the second section 35, and along the hypotenuse of the first section 33. The dormer cheek 3 also comprises a strength enhancing cassette 44. The strength enhancing cassette 44 has an inner cavity, surrounded by a frame structure, wherein insulating material is provided.

Fig. 5b shows an embodiment of the dormer cheek 3 to be installed in a dormer 1 comprising at least one trimmer 7. The dormer cheek 3 has a right angled triangular first section 33 and a right angled adjoining second section 35. The dormer cheek 3 comprises a support structure 36 extending along the first and second cathetus of the second section 35, and along the hypotenuse of the first section 33. The second section 35 of the dormer cheek further comprises a strength enhancing cassette 44. In the embodiment of the dormer cheek 3 shown in Fig. 5 the insulating material in the first 33 and the second section 35 has been omitted to reveal the plate element 41 of the dormer cheek

3.

Fig. 6 a-c shows different embodiments of the dormer roof 5. Fig. 6a shows an embodiment of the dormer roof 5, to be installed in a shed dormer assembly 1 without a trimmer 7. The dormer roof 5 has insulation material 53 arranged on the plate element 51. The insulation material 53 covers a portion, preferably around 90%, of the plate element 51, while a portion remains uncovered. The uncovered portion of the plate element 51 is adapted to rest upon the plate element 41 of the dormer cheeks 3. The insulation material 53 is positioned centrally on the plate element 51, such that two portions of equal size on either side of the sheet 51 remains uncovered. The width of the uncovered portions preferably corresponds to the width of the dormer cheek composing the plate element 41 and the insulation material.

Fig. 6b shows an embodiment of the dormer roof 5, to be installed in a shed dormer assembly 1 comprising a trimmer 7. The embodiment is to be installed in the outermost position of the dormer 1. The insulation material 53 is arranged on the sheet 51, such that the uncovered portion one side of the sheet 51 is larger than on the other side of the sheet 51. The larger uncovered portion of the sheet 51 is intended to rest on the dormer cheeks 3 in the mounted condition, while the smaller uncovered portion is intended to rest on the trimmer 7.

Fig. 6c shows an embodiment of the dormer roof 5, to be installed in a shed dormer assembly 1 with at least two trimmers 7. The embodiment is to be installed in a position between the at least two trimmers 7. The insulation material 53 is arranged centrally on the sheet 51, such that two equally sized portions on either side of the sheet 51 remains uncovered.

Fig. 7 shows an embodiment of the trimmer 7. The trimmer 7 has a first end 71 and a second end 73. The second end 73 has a cutout 75 adapted to accommodate at least one batten extending perpendicularly to the trimmer 7. The trimmer is furthermore provided with brackets 76 for attachment to the surrounding structure.

Fig. 8 shows an embodiment of a flashing 8. The flashing 8 has an upright edge 81, which may be adjoined to a lower corner of the window. The flashing 8 further has a flashing section 83, which is attached to the upright edge 81.

Claims

PATENT CLAIMS

1. A shed dormer assembly adapted to be installed in a pitched roof, wherein the shed dormer assembly comprises a dormer cheek, the dormer cheek comprises a right angled triangular first section and a right angled triangular adjoining second section, wherein the first section and the second section each has a first cathetus at which the second and the first section is adjoined along, such that the first catheti of the first and second sections are coincident and that the outline of the dormer cheek substantially forms an obtuse triangle coincident with the first and the second section, where the first catheti of the first and second sections meet in an obtuse angle of the obtuse triangle, the first and second section each has a second cathetus extending along a side of the obtuse triangle opposing the obtuse angle, the first section and the second section each have a hypotenuse, characterized In that the dormer cheek comprises a support structure extending along the first and second catheti of the second section, and along the hypotenuse of the first section,
2. The shed dormer assembly according to claim 1, where the second section comprises at least one strength enhancing cassette adapted to extend between the second cathetus and the hypotenuse of the second section, preferably a side of the cassette is coincident with the first catheti of the first and second sections,
3. The shed dormer assembly according to claim 2, wherein the strength enhancing cassette comprises a support frame, preferably made of wood, framing a piece of insulation material,
4. The shed dormer assembly according to any one of the preceding claims, wherein the pitched roof comprises at least one batten and where the shed dormer further comprises at least one trimmer having a first end and a second end, the at least one trimmer is adapted to extend in parallel to the hypotenuses of the first and second sections, wherein the second end has at least one cutout, adapted to accommodate the at least one batten extending perpendicularly to the trimmer.
5. The shed dormer assembly according to any one of the preceding claims, wherein the support structure further comprises a piate element covering the dormer cheek.

S. A shed dormer assembly according to any one of the preceding claims, wherein the dormer cheek is provided with insulating materia! preferably on an internal side of the plate element framed by the support structure.
7. A shed dormer assembly according to claim 7, where the first section is provided with a second piece of insulation material, at least partially covering the first piece of insulation material and at least partially covering the support structure extending along the hypotenuse of the first section.

S.The shed dormer assembly according to any one of the preceding claims, wherein the shed dormer assembly comprises a dormer roof and a window side adapted to receive a window.
9. The shed dormer assembly according to any one of the preceding claims, wherein the dormer roof, is provided with insulating material constituting one piece.
10. A shed dormer assembly according to claim 8 wherein the first section is adapted to extend between the pitched roof a fid ⁺he dormer roof.
11 .The shed dormer assembly according to any one of the preceding claims, wherein the shed dormer assembly comprises a window and a flashing covering an intersection of the second cathetus and the hypotenuse of the second section, and a part of the pitched roof, where the flashing has an upright edge adapted to be arranged adjoining a lower corner of the window, wherein a height of the upright edge is adapted to conform to a thickness of the lower comer.

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