FI124271B - Base plate for felt roof - Google Patents

Description

Base plate for felt roof

The present invention relates to a base plate for a felt-covered roof, which base comprises a helmet and a surrounding flange portion mounted when at least 5 partially covered by the felt plates.

The base plate has previously been installed either with only the helmet visible, or the base plate is overlapped with the felt plates in the same manner as the felt plates, leaving the flange portion fully exposed from the bottom of the helmet down to 10.

When the flange portion is completely covered by the felt slabs, there is a joint on the underside of the helmet's eaves, pointing to the roof ridge between the felt slabs and the flange member for easy access of water between the felts. In addition, installation is cumbersome and time consuming when the felts have to be cut to provide an oval opening for the helmet.

When the flange portion of the previously known base plates remains exposed at the eaves side, the problem arises that the plastic flange portion and the bitumen felt slabs live differently due to temperature variation. The ceiling can be around + 50 ° C in summer and about -40 ° C in winter 20. In addition, the sun's UV radiation has its own effect on this type of installation.

From US 4,768,812 A there is known a base plate for a roof covered with felt tiles according to the preamble. The flange portion of the bottom plate in question remains fully visible with its half-size eaves-o 25. The underside of the flange member is imprinted with ø two spacers extending parallel to each other on the opposite side of the longitudinal axis of the flange member to stiffen and reinforce the front edge of the flange member.

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GB-930921A also discloses a base plate for felt-covered roofing according to the preamble, o C \ 1 2

The object of the present invention is to eliminate the above-mentioned problems, which is feasible with a base plate characterized in that the flange portion has two vertical walls extending from opposite sides of the helmet directly to the lower edge of the flange portion against which vertical felt walls are intended to be cut. the intermediate part is intended to remain visible on the roof, with a reinforced part extending directly between the vertical walls at the lower right edge, with two or three thickened points spaced apart with a recess or hole for fastening screws or comb nails for mounting the flange part under the roof slabs tree structure.

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The corners of the lower edge of the flange portion outside the vertical walls are preferably bevelled so that they remain completely covered by adjacent felt slabs.

The portion of the flange portion outside the vertical walls extends in the shape of a horseshoe around 15 helmets and has recesses equally spaced along the edge for the felt pins.

Said outside of said vertical walls of the flange member is provided with grooves extending parallel to the outer edge of the flange member at both top and bottom, arranged so that the grooves above the flange member are located between the grooves below the flange member. The grooves are preferably v-shaped in cross-section.

In one embodiment, the helmet is formed as a roof vent valve, with its top 25 molded and having lugs on the side of the deck structure, and the inside of the helmet having a collar surrounding and extending from the grille to or from the inside of the building.

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In another embodiment, the helmet is formed for pipe penetration, wherein the tip is pre-rotated 30 ° with respect to the normal level of the flange member to facilitate vertical installation of the pipe also on a steep roof.

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The invention will now be described in more detail with reference to the accompanying drawing, in which

Fig. 1 is a perspective view showing an example of a base plate according to the invention;

Figure 2 is an exploded view of the bottom plate of Figure 1,

Fig. 3 is a sectional view taken along the center line of the base plate of Fig. 2, Fig. 4 is a perspective view of another example of a base plate according to the invention,

Fig. 5 is a side elevation view of the base plate of Fig. 3, and Fig. 6 is a perspective view of the base plate of Fig. 3 mounted on the roof and details of how the flange portion of the base plate is mounted between the felt slabs.

Figures 1-3 show a base plate whose helmet 1 is formed as a vent 20 for the roof. The top of the helmet 1 is molded with an opening la covering the vent, and the side of the helmet 1 has lugs Ib for venting the valve cover structure 10, which at its open ends is provided with a grille 10a with its horizontal ribs inclined upward to prevent water and snow in. On the inside of the helmet 1, there is a collar le surrounding and extending from the grille la, which can be connected to a vent pipe or the like from within the building.

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o co Figures 4 to 6 show a base plate with a helmet 1 formed for a pipe entry x. In this embodiment, the helmet 1 is already pivoted 30 ° to the flange portion 2.

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son to normal to facilitate installation of the pipe vertically even on a steep ° 30 roof.

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In lime embodiments, the flange portion 2 surrounding the base plate helmet 1 is of similar shape. The flange part 2 has two vertical walls 4 extending from the opposite sides of the helmet 1 directly to the lower edge of the flange part 2, against which the vertical panels 4 are to be cut. Said vertical walls 4 stiffen the flange part 2 and prevent it from turning upwards. On the ridge side of the helmet 1, the felt plates 3 which overlie the flange part 2 must be cut to form a semicircular opening corresponding to the outer diameter 5 of the helmet 1. The part 2a between the vertical walls 4 of the flange part 2 is intended to remain visible when mounted on the roof. The opening in the felt slabs 3 to be mounted on the flange part 2 thus extends linearly along said vertical walls 4 to the lower edge of the flange part 2. Thus, no oblique oblique opening is required. The straight lower edge 10 of the portion 2a between the vertical walls 4 of the flange portion 2 has a reinforced portion 5 extending between the vertical walls 4. This portion 5 has two or three is intended to be attached to the wooden structure 7 under the roof felt slabs 3. When so fixed, it is effectively prevented by the fluctuation of the flange portion 2 of the flange portion 2 in said visible area 2a.

Since the base plate is interlaced in the same way as the felt plates 3, the corners 2b of the lower edge of the flange portion 2 are bevelled outside the vertical walls 4, as shown in the figures. As a result, the part outside the vertical walls 4 of the flange part 2 does not raise the felt plate 3 on the lower edge 20a on either side of the flange part 2 so that these angles remain visible between the felt plates 3, thereby jeopardizing the appearance of the installation.

The part 2b outside the vertical walls 4 of the flange part 2 extends horseshoe shape 25 around the helmet 1 and has recesses 8 equally spaced along its edge for the hooks. This arrangement ensures that the nail density is correct and i 00 is in the correct position.

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Said part 2c of the flange part 2 outside the vertical walls 4 is provided with grooves 9a, 9b extending equally from one another to the outside of the flange part 2, both above and below it, arranged so that the grooves 9a above the flange part 2 between grooves 9b. The grooves 9a, 9b are preferably v-shaped in cross-section. The grooves thus arranged improve the adhesion of the bitumen 5 to the flange part 2 and receive the heat movements as well as possible.

Figure 5 and its detailed description clearly show how the base plate 5 is to be mounted when installing the felt slabs. The blankets are formed by placing blankets having one long edge straight and the opposite long edge shaped so as to have blunt tips and similarly shaped notches therebetween, such edge forming the lower half of two or three blankets of the same row. On the underside, the felt pieces are provided with bitumen adhesive 10 on the half of the edge comprising the tips and notches. The next row of felt pieces is overlapped and moved over the previous row so that its blunt ends align with the blunt ends of the notches between the ends of the previous felt row. In this case, their blunt notches form the edges of the upper half of the blankets of the previous row and the tips of it the lower half of the blankets of the new row of blankets. The base plate 15 is mounted with its flange portion 2 over at least one of its lower portions and secured thereto with bitumen glue and a wood structure 7 underneath the felt layers with screws 6 and felt nails in recesses 8 formed along the edge of outer portion 2c wherein, at the base plate, the felt piece is cut so as to form an opening in the felt piece, if any, of the next row, which has the shape of a joint formed by the vertical walls 4 of the flange part 2 and the lower edge of the helmet 1.

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Claims (8)

1. The base plate for a roof covered with felt plates (3), the bottom plate comprising a helmet (1) and a surrounding flange part (2), which is mounted at least partially covered by the felt plates (3), characterized in that the flange part (2) ) has two vertical walls (4) extending from the opposing sides of the helmet (1) straight to the lower edge of the flange portion (2), against which vertical walls (4) the felt plates (3) are intended to be cut, and the mounting on the roof is the portion (2a) of the flange portion (2a) between the vertical walls (4) is intended to be visible, the straight lower edge of the portion (2a) having a reinforced portion (5) extending between the vertical walls (4) which is spaced apart. from each other two or three thickened points (5a) in the middle of which are a recess or shark for a fastening screw (6) or a cam nail, by means of which the flange part (2) is intended to be attached to the wooden structure (below) of the felt plates (3) 7). 2. The base plate according to claim 1, characterized in that the hips (2b) of the lower edge of the flange part (2) outside the vertical walls (4) are chamfered so that they are completely covered by the felt plates (3) lying next to them. 3. The base plate according to claim 1 or 2, characterized in that the portion (2c) of the flange portion 20 (2) extends outside the vertical walls horseshoe-shaped around the helmet (1) and along its edges are evenly distributed recesses (8) for felt nails. 4. The base plate according to claim 3, characterized in that the portion of the flange part (2) located outside the vertical walls (4) is both on its upper side and its lower o side provided with grooves (9a, 9b) which extend evenly spaced parallel to each other with the outer edge of the flange member (2) arranged so that the latch (9a) on the upper side cp oo of the flange member is located between the latch (9b) on the lower side of the flange member (2). X DC o_ 5. The base plate according to claim 4, characterized in that the latches (9a, 9b) are c-shaped in their cross-section V-shaped. co cu δ 6. A base plate according to any of the preceding claims, characterized in that the helmet (1) is formed into a ventilation valve for the roof, in the upper end of which is molded 9 a lattice (1a) covering a ventilation opening and the side of which has brackets (1b). for a lid construction (10). 7. A base plate according to claim 6, characterized in that on the inside of the helmet (1) is a collar (1c), which encloses the grid (1a) and extends therefrom downwards, and which can be joined with an ventilation tube coming from the inside of the building. or equivalent. 8. A base plate according to any one of the preceding claims 1 to 5, characterized in that the helmet is formed for a pipe passage, wherein the helmet (1) is completely turned 30 ° in relation to the normal to the flange of the flange part (2) to facilitate mounting of the a pipe vertically also on a steep roof. 15 't δ c \ j i CO o co X cc CL 1 ^ O C \ l CO CM δ CM