DE8907676U1 - Thermal insulation board - Google Patents

Abstract

The invention relates to an underroofing having heat insulating slabs laid on roof laths. According to the invention, a slab central part (8) has a greater thickness than the edges, facing the slab centre, of ridge- and eaves-side, wedge-shaped slab parts (2, 3), the ridge-side slab part (2) merging into the slab central part (8) by way of an upper-side step (20) and the eaves-side slab part (3) merging into it by way of an underside step (6) supported on the ridge-side side face (11) of the roof lath (12) concerned. The lateral slab edges form a side groove (25) which begins at a distance from the ridge-side slab edge (9) in the ridge-side slab part (2), extends over the slab central part (8) and ends at a distance from the eaves-side slab edge (19) in the eaves-side slab part (3), and which in the process rises at an acute angle to the plane (10) of the roof lath. Thus, a heat insulating slab design which is of low susceptibility to damage and provides a sealed underroofing is possible. <IMAGE>

Description

Thermal insulation board

The innovation relates to a thermal insulation panel, in particular for producing a sub-roof according to the preamble of claim 1.

A well-known thermal insulation board (DE-OS 30 01 339) consists of a ridge-side part and an eaves-side part, whereby the eaves-side part overlaps with its underside the ridge-side part of a neighboring board on the eaves side and there rests on the top of this ridge-side part when installed. The ridge-side part has a step at its eaves-side end with an eaves-side support surface, over which the thermal insulation board rests downwards on a lower roof batten to prevent it from slipping* The eaves-side parts completely fill the space between two roof battens and also rest on the vertical roof rafters. The thermal insulation boards are designed to be wide enough to cover the distance between the roof rafters.

This type of thermal insulation board has a number of disadvantages when installed: It cannot be guaranteed that the side joints of adjacent thermal insulation boards will always lie above the rafters. In fact, such joints will also lie next to the rafters, so that there is no support there and the thermal insulation boards will be sucked downwards by their weight, at least over time, and large gaps and spaces will form. It cannot be guaranteed, particularly in the case of old roof renovations where the existing roof battens are to be reused, that the roof battens will be exactly the same distance apart. If the thermal insulation boards have to be pulled in the ridge-eaves direction, considerable gaps will arise. Irregularities in the batten thicknesses can also cause gaps between the support surfaces, since the position relative to one another is determined by both the support on the rafters and the battens. Significant problems with thermal insulation and windproofing are therefore to be expected here. Since the thermal insulation boards cannot be pulled without a significant loss of thermal insulation, thermal insulation boards of a specific size are required for each batten spacing. This significantly increases production costs, storage, difficulties in using up remaining stocks, etc. Because of the large width required, which is larger than the rafter spacing, the boards are not very easy to work with during roofing work.

Another known thermal insulation board for a sub-roof (DE-PS 23 49 710) has a first - side support strip that is covered by a part of an adjacent board on the eaves side. With such an embodiment, the ridge-side end of the thermal insulation board no longer hangs in the air or no longer needs to be placed on the roof rafters. But even with this embodiment, the support and contact surfaces for the roof battens are perpendicular to them and the contact surfaces on the battens are parallel to the batten surface determined by the roof battens. Here too,

Every time adjacent thermal insulation panels are pulled, significant gaps inevitably arise, which greatly reduces the thermal insulation. In addition, the side seams must be used to drain the water in the area of the side joints from far below to

5 are transported on top of the next plate, which leads to complicated, delicate folds that can be easily damaged.

Furthermore, relatively long thermal insulation panels are known (DE-OS 36 23 428), with a plane-parallel middle section, to which a wedge-shaped upper and lower section are connected. These panels are intended for double covering and therefore differ in the type of covering from the thermal insulation panels described above, which are laid in single covering with lateral edge folds.

The aim of the innovation is to further develop a thermal insulation board in such a way that the thermal insulation and wind tightness are improved.
20

This object is achieved by the characterizing features of claim 1.

According to claim 1, the ridge-side part carries at its ridge-side end a support strip of a certain thickness, which rests on the next upper roof batten and on which in turn rests relatively widely overlapping around the underside of the eaves-side part of the next ridge-side neighboring panel in the region of the step.
30

From the base line of the step to the upper end edge of the support strip, a plane is determined that is approximately parallel to the batten surface defined by the roof battens and the thermal insulation panels are laid in single coverage. 35

An essential feature is that the underside of the eaves-side part, starting from the base line of the step, is a flat surface not in or parallel to the projecting

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mentioned plane, but runs diagonally upwards or away from the batten surface relative to this plane, accordingly the top of the ridge-side part also runs from the upper end edge of the support strip as a flat surface parallel to the underside of the top-side part. It is particularly important to note that these bottom and top sides, as mutual contact surfaces, do not contain any steps or interlocking parts, so that adjacent thermal insulation panels can be moved against each other along these contact surfaces in the ridge-eaves direction without obstruction or gap formation.

When covered, the step size that remains for hanging on a roof batten on a thermal insulation board is determined by the actual step height minus the thickness of the covered support strip. This step size is to be calculated so that it is smaller than the thickness of the roof battens normally used, so that the underside of each thermal insulation board does not rest on the rafters, but can freely adjust its height and position relative to the neighboring boards during installation.

The surface of the ridge-side ridge merges into the surface of the eaves-side part in the part that is no longer covered, whereby this surface has the same or lesser inclination compared to the above-mentioned level or batten surface. The surface of the eaves-side part has a profile for hanging roof battens or, if necessary, a groove for laying slate-like, plate-shaped materials.

The thermal insulation panels are laid in a single layer and therefore have a side interlock on their long sides.

A significant advantage of these compact size thermal insulation panels for single covering is that when pulling

UCIl aUL^LUIIU Ud. KCXXLVLnX^CIl \/&SCLU^\»rk Ull^ IYCXIlC IrCOCIIUXJ ₁ VIICIl Insulation weak points arise. A thermal insulation board size is

thus suitable for different batten spacings. When the thermal insulation panels are pulled, they adjust their position and relative height to each other so that the contact surfaces lie completely flat against each other. The

° The contact surfaces are also pressed together by the weight of the roof panels, so that a very high level of wind tightness is achieved with largely gap-free thermal insulation.

Due to the wedge-shaped contact surfaces that slope outwards,

* ^In addition, a simple, flexible rope fence is possible. In addition, a good ridge and eaves solution can be achieved.

Due to their compact shape and design, the new !5 thermal insulation panels can be easily stacked with only small gaps, which is particularly advantageous in terms of storage and transport costs.

According to claim 2, it is proposed to form the underside of the support strip parallel to the above-mentioned plane or to the batten surface, so that a flat support on the batten surface is achieved.

According to claim 3, the support strip should be approximately the width of a normally laid roof batten, so that the support strip rests on the entire width of the roof batten when the cover is tight. In order to make the most of the space provided by the batten thickness, it is further proposed that the ridge-side part, starting from the support strip, thickens slightly towards the bottom and runs with a flat lower surface towards the lower step edge. However, this lower surface should not rest on the rafters running in the ridge-eaves direction, as otherwise the free mutual adjustment of the thermal insulation panels would be hindered. 35

According to claim 4, similar to the support strip, the eaves end should have an öestiräste thickness _so that the basic shape of the thermal insulation board in cross section is

1 represents two wedges with a blunted wedge tip, which are joined together at their strong ends or, according to an embodiment claimed below, overlap at their strong ends. At least the

5 below. The blunted wedge tips cause the plates to be bent at their upper and lower

C rarely very robust and largely immune to damage

% sensitive.

&tgr; 10 A preferred embodiment of the invention is as per claim 5

in that the centre lines of the above-mentioned wedge shapes are offset from one another, so that the step pointing downwards is produced on the ridge-side part and a hanging step pointing upwards U for hanging roof tiles.

H The profile for hanging the roof panels can be designed as a step,

strip or groove. For a good ridge formation, it is advantageous to offset the position of this profile towards the ridge side by a distance from the step projecting downwards. This distance should be chosen to be larger the thicker the thermal insulation board is. In other words, the total length of the board measured in the ridge - x-ray - direction is greater than the sum of the lengths of the top and bottom used as contact surfaces.

According to claim 7, a thermal insulation board can also be suitable for covering with plain tiles by attaching an additional, second profile to the overhang of the eaves-side part. When covering with interlocking tiles or roof tiles, this second profile then remains free.

According to claim 8, it is possible to design a thermal insulation board according to the innovation to be point-symmetrical in cross-section, so that no distinction needs to be made between the top and bottom sides during installation.

The thermal insulation board is best laid in one row, but offset from the neighboring rows.

A simple design of a side interlock is claimed in claim 9 as a water-conducting tongue and groove. Such a design is particularly useful in a point-symetric design.

A further advantageous embodiment of a side fold is specified in claim 10, wherein the side fold is designed as a groove on one side and a cover strip on the other side. -

The side folds need to be adjusted because of the angled edges.

bearing surfaces are not extended to the ends of the panels. It is therefore advantageously proposed in claim 11 to have the side folds begin at a distance from the ridge-side panel end and an inlet open at the top and to end at a distance from the eaves-side panel end with an outlet open at the bottom. '

This is particularly advantageous in achieving a hind stop through the deflection in the side fold. The lateral water flow passes into the contact surface and the water flow is possible in the side fold even with a very low roof pitch. The ·■ side fold can run approximately parallel to the above-mentioned plane or the batten surface, as stated in claim 12, j,

According to claim 13, the thermal insulation board according to the innovation can also have drainage grooves that are known per se, which run in the ridge-eaves direction through the profile for hanging roof panels. These drainage grooves can be extended to the inlets on the side folds.

Based on drawings, the innovation is illustrated with further individual details!

holton. Characteristics and distribution explained-

Show it

Fig. 1 shows the side view of a thermal insulation board, ^b Fig. 2 shows the top view of the thermal insulation board according to Fig. 1,

Fig. 3 a cross-section through the thermal insulation board according to Figs. 1 and 2 along the line A-A as well as dashed lines of the insulating boards, IO

Fig. 4 a side view of several already covered thermal insulation panels for the production of a sub-roof with a plain tile covering,

Fig. 5 a second embodiment of a thermal insulation panel, Fig. 6 a third embodiment of a thermal insulation panel,

Fig. 7 a fourth embodiment of a thermal insulation panel and 20

Fig. 8 a section through the thermal insulation board according to Fig. 7

along the line B-B in the area of the side fold.

In Fig. 1, a thermal insulation panel 1 is shown for producing a sub-roof, which consists of a ridge-side part 2 and an eaves-side part 3. The underside 4 of the eaves-side part 3 and the top 5 of the ridge-side part are flat contact surfaces when concealed (see Fig. 4). The ridge-side part 2 has a step 6 at the eaves-side end, which is supported on a roof batten with an eaves-side support surface when concealed (see Fig. 4).

The ridge-side part 2 carries on its ridge-side end a support strip 7 which has a certain thickness and which rests on an upper roof batten in the concealed state and on which in turn the underside 4 of the eaves-side part 3 of the next ridge-side neighbouring panel in the area of the

Level 6 is applied.

By means of an (imaginary) connection between the base line 8 of the step 6 and the upper end edge 9 of the support strip V δ, a plane 10 is determined (shown in dashed lines), which in the concealed state lies approximately parallel to the batten surface determined by the roof battens (see also Fig. 4).

The underside 4 of the eaves-side part 3 starts from the Sasis-!O line 8 of the level 6 as a flat surface and is inclined upwards relative to the level 10 or away from the batten surface.

Accordingly, the upper side 5 of the ridge-side part 2 extends from the upper end edge 9 of the support strip 7 as a flat surface and is exactly parallel to the lower side 4.

With reference to Fig. 4, it can be seen that the step height of the step 6 minus the thickness of the support strip 7 leaves a step dimension 11 at the end of the step for hanging the heating plate in a roof batten, whereby the step dimension 11 is smaller than the thickness of the roof batten 12 used.

The underside 13 of the support strip 7 runs approximately parallel to the plane 10.

Starting from the support strip 7, the thermal insulation panel 1 becomes slightly thicker towards the eaves in an arched transition 14 and runs with a flat underside 15 towards the step 6.

Two hanging strips 17 and 18 are attached at a distance from one another on an upper side 16 of the eaves-side part 3, which is not covered. The height of the upper hanging strip 17 is selected such that it is greater than the front thickness 19 of the eaves-side part 3, so that when laid, an overhang 20 remains for hanging roof panels (see Fig. 4).

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The hanging edge 20 of the hanging strip 17 is slightly shifted upwards towards the ridge side compared to the step 6 or the base line 8. The basic shape, when viewed from the side, is therefore two wedges with blunted cutting edges that are not aligned with their strong ends '5 against each other and are pushed into each other. This forms both the step 6 and the hanging edge 20, the parallel contact surfaces 4 and 5 and the undersurface 15 and surface 16.

The design of the long sides of the thermal insulation board 1 is explained in more detail with reference to Fig. 2 and 3. On the left side of the thermal insulation board 1, a step with a water channel 21 is formed, which sets back upwards. On the opposite right side, a corresponding cover strip 22 is formed, which projects upwards. The step design with the water channel 21 and the cover strip 22 do not run along the entire long sides of the board, but stop relatively far in front of the lower and upper ends of the board, with an inlet 23 open upwards and an outlet 24 open downwards being provided at the upper end. (The inlet and outlet can also be clearly seen in Fig. 4.) The side fold 25, consisting of the projection with the water channel 21 and the cover strip 22, runs approximately parallel to plane 10.

The dashed lines 26 in Fig. 2 are intended to indicate schematically that the thermal insulation panels are laid in rows, but the individual rows or joints are offset from one another.

Fig. 4 shows a side view of several thermal insulation panels 1 laid on a lath frame. The laying is shown here in a largely tight state, with the eaves and ridge-side parts overlapping each other with their contact surfaces in a wedge shape and running diagonally outwards. It is immediately apparent that if the laths are slightly further apart, the individual panels can be pulled apart slightly at their diagonal contact surfaces.

* · · 14 · I 141 · &diams; · *

Due to the slanted contact surfaces, the steps 6 would then move a little further down the roof battens, which requires the distance 27 between the lower surface 15 of the thermal insulation panels and the rafter 28. However, when they are pulled apart, the panels adjust themselves relative to each other so that the contact surfaces lie completely against each other without gaps. Because of the wedge shape, there are also not deep gaps across the insulation surface.

In Fig. 4 it can also be clearly seen that despite the parallel position of the side interlock to the batten surface and despite the fact that the side interlock does not reach to the ends of the panels, water is transferred from one panel to the other, even with very low roof pitches.

The sub-roof constructed as shown in Fig. 4 is covered with plain tile roof panels 29, which are suspended from the suspension strips 17 and 18. It can be seen that the contact surfaces are pressed together by the weight of the roof panels.

In Fig. 5, a slightly modified, second embodiment is shown, in which the strips 17, 18 are wider than in the first embodiment, which in turn results in a hanging edge 20 at the ridge-side end of the eaves-side part 3 and a gutter 30 for hanging another roof panel.

A third embodiment of a thermal insulation panel according to Fig. 6 is modified compared to the second embodiment only in that the hanging edge 20 is formed by a further step. This makes it possible to achieve a very short design, although the slopes of the contact surfaces must be selected to be relatively large.

A fourth embodiment is shown in Fig. 7. In this embodiment, the side fold is designed as a water-conducting tongue and groove connection 31, 32 as shown in Fig. 8. This tongue and groove connection

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12

According to Fig. 7, it also does not extend to the upper and lower ends of the panels. It can also be seen from Fig. 7 that the panels are point-symmetrical in cross-section, so that they can be used and rotated on the left and right. Drainage grooves (not shown) can be formed in a known manner using the suspension strips 17, 18.

Claims (1)

Expectations 1. Thermal insulation board (1) for laying on a framework made of roof battens (12), consisting of a ridge-side part (2) with an upper side (5) as a contact surface and an eaves-side part (3) with a lower side (4) as a contact surface and the ridge-side part (2) has a step (6) at its eaves-side end with an eaves-side support surface for support on a roof batten, characterized, that the ridge-side part (2) has a support strip (7) of a certain thickness at its ridge-side end for resting on a roof batten, that from the base line (8) of the step (6) and the upper line determining the thickness of the support strip (7) Z . ■ 1 (I I ' ¹ edge (9) a plane (10) is determined, and the underside (4) of the eaves-side part (3) starting from the bisis line (8) of the step (6) as a flat surface relative to the above-mentioned plane (10) upwards or away 5 runs diagonally from the batten surface, that the top side (5) of the ridge-side part (2) runs from the upper end edge (9) of the support strip (7) as a flat surface parallel to the underside (4) of the eaves-side part (3), that the height of the step (6) minus the thickness of the support strip (7) results in a remaining step dimension (11) for hanging on a roof batten, that the top side (5) of the ridge-side part (2) merges into the top side (16) of the eaves-side part (3), whereby this top side (16) has an equal or lesser inclination compared to the above-mentioned plane (10); 20 and has a profile for hanging (17, 18; 30) roof panels (29) or a corrugation for laying sliding I ferrous, plate-shaped materials and that the thermal insulation board (1) has a side fold (2S", on ?·■ 25 its long sides. h 2. Thermal insulation board according to claim 1, characterized in that '§ that the underside (13) of the support strip (7) is approximately parallel to the above-mentioned plane (10). * 3. Thermal insulation board according to claim 1 or 2, characterized in that the support strip (7) or its underside I side (13) approximately the width of a normally laid 1 roof batten (12) «and the ridge-side part (2) \ 35 thickened towards the bottom with a lower surface (15) which, as a substantially flat, to the above-mentioned plane (10) I parallel surface to the step (6). &bull; t < 4. Thermal insulation board according to one of claims 1 to 3, characterized in that the eaves-side end has a certain thickness (19) similar to the support strip (7), so that the basic shape of the thermal insulation board (1) in the transverse '5 section as two wedges with blunted wedge tips, which are put together at their strong ends and thereby at least the downwardly projecting step (6) is formed. 5. Thermal insulation panel according to claim 4, characterized in that the center lines of the wedges are offset from one another, so that the downward-pointing step (6) is formed by the ridge-side part (2) and an upward-pointing hanging step (17 or 20) for hanging roof tiles is formed by the eaves-side part (3). 6. Thermal insulation panel according to one of claims 1 to 5, characterized in that the profile for hanging the roof panels is designed as a step, strip (17, 18) or groove (30) and is offset in its position towards the ridge side by a distance from the downwardly projecting step (6) or step base line (8). 7. Thermal insulation panel according to one of claims 1 to 6, characterized in that on the surface (16) of the eaves-side part (3) a further, second profile (18) is attached at a distance from the first profile (17) (for covering with plain tile roof panels (29)). 8. Thermal insulation panel according to one of claims 1 to 7, characterized in that the thermal insulation panel (1) is point-symmetrical when viewed in cross section (Fig. 7). 9. Thermal insulation panel according to one of claims 1 to 8, characterized in that the side fold (25) is designed as a water-conducting groove (31) and tongue (32). J it is. &bull; I Il ti· 10. Thermal insulation board according to claims 1 to 8, characterized in that the side fold (25) is designed as a water guide channel (21) on one long side and cover strip (22) on the other long side. 5 11. Thermal insulation board according to claim 10, characterized in that the cable routing (25) begins at a distance from the ridge-side board end and an upwardly open inlet (23) and ends at a distance from the eaves-side board end and at a downwardly open outlet (24). 12. Thermal insulation panel according to one of claims 1 to 11, characterized in that the side fold (25) runs approximately parallel to the above-mentioned plane (10). 13. Thermal insulation panel according to one of claims 1 to 12, characterized in that drainage grooves running through the profile (17, 18) in the ridge-eaves direction are provided. &bull; · · it ■ I &bull; · · I ItI I I*·