EP1069255A1 - Method for building a thermally insulating and covering roof structure - Google Patents

Abstract

The roof structure (12) comprises a weather-resistant roof-coating (13) fixed to the existing roof (11) by means of tie elements (14) positioned in a pre-set grid pattern (15). Each tie element has a cavity (21,22) for applying a fixing substance such as foam. The tie elements are pre-fixed to the roof by means of the fixture substance, and have a structured adhesive surface. The tie elements have a top side (34) for fixing the roof covering, two end sides, two flanks and underside (35) which has one or more lengthwise grooves (19,20) for inserting bonding agent (17).

Description

The invention relates to a method for producing a heat-insulating and at the same time covering roof structure according to the generic term of Claim 1, a roof structure according to the preamble of the claim 5 or 12 and an anchor element for use with a Roof structure.

When renovating, covering and heat insulation of existing roofs, such as corrugated iron roofs, corrugated best roofs, aluminum roofs and Similar roofs generally has the problem that the one to be created The roof structure must also withstand high wind suction loads. Traditionally such roof structures with the existing Screwed, nailed or riveted roof. With such selective connections however, there is a problem that the legally required Extract values are often not achieved. Such roof structures can stronger wind suction loads may not withstand what in addition to the destruction of the roof structure, a considerable risk to the Environment.

A roof structure and a method were therefore already described in DE 197 57 254 described for its manufacture, at the point loads thereby be avoided that between the anchor elements of the to be created Roof structure and the existing roof introduced a binder the roof structure is flat in several predetermined places is attached to the existing roof.

However, when it comes to realizing this promising concept the problem occurred that the anchor elements during curing of the binder on the existing roof from the intended one Slip position. This may already be the case with flat roofs problem occurring increases with the steepness of a roof, so that with roofs of greater inclination, the anchor elements during the curing process of the binder can even slip off the roof.

The object of the present invention is a method and specify a roof structure in which the anchor elements slip with sufficient certainty during the curing process of the binder is avoided.

This object is achieved with a method according to the features of the claim 1 and a roof structure with the features of claim 5 or the features of claim 12 solved. Advantageous further developments are specified in the subclaims.

A key concept of the present invention is the anchor elements to be temporarily fixed at the position intended for them. According to one aspect of the present invention, this is done by that the anchor elements with a fast curing fixing substance be fixed to the existing roof so that it slips is prevented with sufficient certainty. Guaranteed the fixing substance itself does not have sufficient tensile strength to achieve a Attachment of the entire roof structure with sufficient reliability to guarantee. Rather, this requires that special binders be used Fixing the anchor elements on the existing roof between the anchor elements and the existing roof is introduced, so that a permanent and sufficiently tensile connection via one or more Form extensive areas between the anchor element and the roof can.

In an advantageous embodiment, the fixing substance is made via recesses introduced in the anchor elements, such that the anchor elements be pre-fixed in the area of these recesses. This has the fixation substance on the one hand sufficient attack surface on the respective Anchor element; on the other hand, the amount of the fixative introduced be well controlled based on their level in the recess. If conventional assembly foam is used as a fixing substance a comparatively small amount, such as walnut size, be sufficient for fastening an anchor element. Preferably however, not one, but two recesses are provided. A higher number of recesses is also conceivable, but then the effort to fix an anchor element increases accordingly.

In a further advantageous embodiment, the binder on the End face of the anchor elements introduced and overflows in the anchor elements provided longitudinal grooves in the area between the anchor element and roof 1. The speed and depth of break-in depend on the surface and slope of the roof. With most roof shapes the binder can run in over the entire length of the anchor elements and usually also emerges at the opposite end. Hereby can be checked that the binder is completely between anchor elements and roof has broken in.

Alternatively or additionally, the binder can also be introduced laterally and runs at least partially in the area between the anchor element and roof one. The inlet depth is also of the shape and depending on the surface of the roof. The binder runs on corrugated roofs following the waveform under the anchor elements pre-fixed in the wave valley on.

In the case of flat roofs, however, the binder is preferred after pre-fixing introduced around the entire anchor element along its circumference. In the case of sloping roofs, it is advisable to place the binder around one Part of the circumference, namely in the upper area of the side flanks and to be introduced at the front. This can be done in one continuous application step take place, the introduction of the binder on a side Flank started and then following the circumference on the front and is continued in the upper area of the other side flank.

In terms of device technology come with the present invention Anchor elements are used, each with at least one recess for introducing a fixing substance, such as assembly foam. The recess is designed so that the anchor elements after insertion the fixing substance on the roof are pre-fixed. Training the anchor elements with such recesses thus provides a reliable and at the same time an inexpensive solution to the above Problem.

It is particularly advantageous to have the recesses in the form of through holes to train. In this embodiment, on the one hand, there is the pre-fixation particularly effective, because the fixing substance thereby to the Anchor elements reliable attack surfaces are formed. Furthermore can the amount of the fixative introduced by the amount of Fill level in the recess can be checked in a simple manner.

Since the fixing substance is only used to pre-fix the anchor elements serves and the actual attachment takes place via binders, should Improvement of the gluing with the existing roof the anchor element have a structured adhesive surface. This will make it effective of the binder reinforced. At the same time, even if the Assembly foam for the binders introduced in the next step sufficient adhesive surface created.

In a particularly expedient development, the anchor element is included an upper side for fastening the roof support two end faces as well two flanks and in the area between the flanks with an underside provided, one or more longitudinal grooves in the area of the bottom are provided for the introduction of binders and / or improvement the adhesive properties are formed when the binder is introduced. The longitudinal grooves guide the end face, especially when the roof is sloping Binder in the area between the roof and the underside of the anchor element. If the longitudinal grooves are continuous, with appropriate The surface and slope of the roof also adhere to the binder emerge again from the opposite end of the anchor element, so that a wetting of the entire longitudinal extent of the underside is ensured and can be checked.

It has proven advantageous to have several, in particular two to four provide longitudinal grooves arranged parallel to each other.

In a particularly advantageous embodiment, the anchor elements have an approximately semicircular cross-section, with a longitudinal groove in Vertex and two further longitudinal grooves by 15 ° to 40 °, preferably about 25 °, are spaced from the apex. This arrangement allows a particularly favorable distribution of the binders. To A knowledge of the present invention should, above all, the binder be effective in the area of the underside of the anchor elements. In the side Ascending binder area improves the extraction values Wind suction load only insignificant. At the same time, the anchor elements raised by too much binder and straight with corrugated roofs pushed out of the trough.

According to another aspect of the present invention, the problem is solved solved the sliding of the anchor elements in that several Anchor elements are connected together to form an anchor chain. In this Design may be sufficient to fix an anchor element to the to hold the entire anchor chain. The anchor chain can also be used without fixation an anchor element itself temporarily on one or more of your connecting elements be fixed. With a ridge or gable roof that happen, for example, that the anchor chain with a connecting element in their middle area over the ridge of a roof is placed. Frictional forces of the anchor chain on the ridge and the anchor elements on both sides of the ridge prevent the anchor chain from slipping.

According to a first alternative embodiment, these are the connecting elements rigid, for example designed as a punch. After a In another alternative embodiment, the connecting elements are flexible and tensile, for example as a wire or wire rope. While according to the last alternative embodiment, slipping because of the tensile strength of the connecting elements is excluded only in the direction of pull forces can also act against rigid connecting elements intercepted in the direction of pull or laterally to the anchor chain and slipped of a single anchor element can be prevented.

Another aspect of the present invention is one for manufacturing of the above-described roof structure formed anchor element. On such anchor element can be sold as a separate component and by Roofers are sourced, who in turn use a roof structure erect the anchor elements of the invention.

The invention is also described below with regard to further features and Advantages based on the description of exemplary embodiments and below Reference to the accompanying drawings explained in more detail.

Fig. 1

eine Ausführungsform eines auf einem Dach aufgeklebten Ankerelements in Querschnittsansicht,

Fig. 2

das Ankerelement nach Fig. 1 in einer Ansicht von unten,

Fig. 3

einen Querschnitt durch einen unter Verwendung des Ankerelements nach Fig. 1 hergestellten Dachaufbaus,

Fig. 4

eine Ausführungsform eines auf einem Dach befestigten Ankerelements in perspektivischer Ansicht,

Fig. 5

eine Ausführungsform einer über den First eines Daches gelegten Ankerkette mit fünf Ankerelementen in skizzenhafter Darstellung.

Here show:

Fig. 1

1 shows an embodiment of an anchor element glued to a roof in a cross-sectional view,

Fig. 2

1 in a view from below,

Fig. 3

2 shows a cross section through a roof structure produced using the anchor element according to FIG. 1,

Fig. 4

1 shows an embodiment of an anchor element fastened to a roof in a perspective view,

Fig. 5

an embodiment of an anchor chain placed over the ridge of a roof with five anchor elements in a sketchy representation.

1 is an embodiment of an anchor element according to the invention 14 shown in cross-sectional view. The anchor element 14 is on one existing roof 11, here a corrugated asbestos roof attached by binder 17. The binder 17 is a in a preferred embodiment Polyurethane-based specially developed adhesive with which high Have extract values guaranteed.

In the present example, the anchor element 14 is in the middle plane halved log with two faces 44, 45 (Fig. 4). The between the End faces 44, 45 lying flat flat side defines an upper side 34. Die round lateral surface is formed by two flanks 31, 32 and one in between arranged underside 35 defined. Flanks 31, 32 and bottom 35 go in the cross-sectional shape described here continuously into one another, with the flanks 31, 32 approximately over an angular range of 45 ° and the bottom 35 extend over an angular range of 90 °.

The underside 35 of the anchor elements 14 is designed as an adhesive surface 18. The anchor elements inserted in troughs 16 of the existing roof 11 14 are also from the adhesive surface 18 via binder 17 glued to the existing roof 11.

The anchor element 14 preferably has between the upper side 34 and the lower side 35 two each arranged in the end regions of the anchor element 14 recesses formed as through holes. The Through bores 21, 22 are centered with respect to the flanks 31, 32 arranged such that the through holes 21, 22 each at the apex 36 of the bottom 35 ends. As shown in Fig. 1, the through hole 21 for the purpose of pre-fixing the anchor element 14 the existing roof 11 partially with fixing substance 33, which here conventional assembly foam can be filled. The one on the existing Roof 11 as well as on the walls of the through hole 21 attacking mounting foam 33 ensures sufficient pre-fixation the anchor element 14. By the level of the mounting foam 33 in the through opening 21, the fitter can check the reliability of the Check the pre-fixation made. In Fig. 1 is the anchor element 14 still without binder 17 only through the assembly foam 33 on existing roof 11 pre-fixed.

2 shows the anchor element according to FIG. 1 in a view from below. In the area of the bottom 35, the through holes already mentioned occur 21, 22, which are at a sufficient distance from the middle Area, preferably arranged in the end areas of the anchor element 14 are. Several, here three longitudinal grooves also run on the underside 35 19, 20, 20 '. The longitudinal grooves 19, 20, 20 'are parallel to the longitudinal extent of the anchor element 14 aligned and have in the present Case about the same distance, same width and same depth. In the In the embodiment shown, the central longitudinal groove 19 runs in each case The apex on both sides is a longitudinal groove running parallel to it 20, 20 'arranged, the angular distance of the through the vertices extending central longitudinal groove to those arranged laterally therefrom Longitudinal grooves are each about 25 °.

In Fig. 3, a roof structure 12 with a roof support 13 is used an anchor element according to the invention on an existing roof 11, formed in the embodiment shown here as corrugated asbestos is attached. For this purpose, the anchor element 14 according to the described pre-fixation using binders 17 in troughs 16 des existing badger 11 fixed. The binder is from the end face or faces and / or introduced from the flanks 31, 32 and runs along the longitudinal groove 19, 20, 20 'or the flanks 31, 32 in the region of the adhesive surface 18 of the pre-fixed anchor element 14. This will create a two-dimensional bonding of the anchor element 14 to an existing roof 11 achieved, which also guarantees high extraction values.

The entire process for fixing a roof structure to an existing one Roof 11 runs roughly in the following three steps:

Pre-fix the anchor element 14 on the existing roof 11 by Introducing fixing substance 33 into the through holes here trained recesses 21, 22; Introducing binder 17 into the area of the adhesive surface Forwarding of the binder over the area of the adhesive surface 18 in the already pre-fixed anchor element 14 in longitudinal grooves 19, 20, 20 '; Attach the roof pad 13 by means of mounting screws 23 on the Top 34 of the pull-out anchor elements fixed to the existing roof 14.

4, the anchor element 14 according to FIGS. 1 to 3 is again in perspective View in firmly glued condition on an existing roof 11, the vertices 36 of the bottom 35 each in the Corrugated valleys 16 of the corrugated iron roof or corrugated asbestos roof, existing roof 11 are arranged.

5 is a further, alternative or supplementary solution to the problem the slipping of anchor elements before insertion or when curing of the binder 17 illustrates. Here are several anchor elements 14 by connecting elements 37, 38, 39, 40, 41 to form an anchor chain 42 connected. The connecting elements 37, 38, 39, 40, 41 can either rigid, for example as a punch or similar rod material or flexible, for example in the form of wire ropes, especially in the form of a single, continuous wire rope.

A simple pre-fixation can be achieved, for example, by that the entire anchor chain 42 with one of its middle connecting elements 39 is placed over the ridge 43 of a roof 11. A fixation leaves with this solution solely through the equilibrium position of the anchor chain 42 ensure on the roof 11. Even positioning the anchor chain 42 outside of their focus is possible within certain limits since frictional forces of the anchor elements 14 cause slipping away with sufficient Prevent security. A fixation can be supplementary or alternative but also cause a connecting element 34, 38, 39, 40, 41 of the anchor chain 42 is fixed directly to the existing roof 11. Instead of the fixation of a connecting element 37 to 41 may be sufficient but also the fixation of one or fewer anchor elements in the of Figures 1 to 4 described manner when introducing fixative 21 designed for this purpose as through holes Recesses 21, 22 from.

Although not explicitly shown in the figures, any modifications are possible of the recesses 21, 22 in the anchor elements 14 is conceivable. For example could have bay-shaped recesses in the area of the flanks be provided instead of those designed as through openings Recesses 21, 22 contact surfaces for the fixing substance to be introduced 33 form.

With the present invention is a simple and reliable method created a roof structure 12 on an existing roof 11 in a simple, permanent and reliable manner.

Reference list

11

Existing roof

12th

roof structure

13

Roof pad

14

Anchor elements

16

Wave valleys

17th

binder

18th

Adhesive surface

19, 20, 20 '

Longitudinal grooves

21, 22

Recesses, through holes

23

Fastening screw

31, 32

Flanks

33

Fixing substance, assembly foam

34

Top

35

bottom

36

Vertex

37 to 41

Fasteners

42

Anchor chain

43

First

44

Face

45

Face

Claims (15)

A method for producing a heat-insulating and simultaneously covering roof structure for an existing roof (11), comprising the following steps: Attaching a plurality of anchor elements (14) in a predetermined grid (15) on the existing roof (11) and Securing a roof support (13) covering the roof (11) to anchor elements (14),
characterized by that the plurality of anchor elements (14) are first pre-fixed with a fixing substance such as assembly foam (33) on the existing roof (11) and that the anchor elements are then permanently attached to the roof (11) with binder (17) which is attached to the anchor elements (14) on at least one side (31, 32, 34, 35). Method according to claim 1,
characterized by that the fixing substance (33) is introduced into the anchor elements (14) via recesses (21, 22), so that the anchor elements (14) are pre-fixed in the region of these recesses (21, 22). The method of claim 1 or 2,
characterized by that the binding agent (17) is introduced on the end face and runs in the area between the anchor element (14) and roof (11) via longitudinal grooves (19, 20) provided in the anchor elements (14). Method according to one of claims 1 to 3,
characterized by that the binding agent (17) is introduced laterally and at least partially, preferably using the shape of the roof (11), runs into the area between the anchor element (14) and roof (11). Roof structure for covering and at the same time heat insulation of an existing roof (11), the roof structure (12) comprising a weather-resistant roof support (13), which is arranged on the weather-proof roof (14) via a plurality of anchor elements (14) arranged in a predetermined grid (15). 11) can be fastened,
characterized by that the anchor elements (14) each comprise at least one recess (21, 22) for introducing a fixing substance, such as assembly foam (33), so that the anchor elements (14) can be pre-fixed on the roof (11) via the fixing substance (33) introduced in the region of the recess. Roof structure according to claim 5,
characterized by that the recesses (21, 22) are designed as through holes (21, 22). Roof structure according to claim 5 or 6,
characterized by that the anchor elements (14) to improve the bonding to the existing roof (11) have a structured adhesive surface (18). Roof structure according to one of claims 5 to 7,
characterized by that the anchor elements (14) have an upper side (34) for fastening the roof support (13), two end faces (44, 45) and two flanks (31, 32) and in the area between the flanks (31, 32) an underside (35) exhibit,
one or more longitudinal grooves (19, 20) are provided in the area of the underside (35) and are designed to introduce binders (17) and / or improve the adhesive properties. Roof structure according to claim 8,
characterized by that several, in particular two to four, longitudinal grooves (19, 20) arranged parallel to one another are provided. Roof structure according to one of the preceding claims,
characterized by that the anchor elements (14) have a semicircular cross-section, one longitudinal groove (19) at the apex (36) and two further by 15 ° to 40 °, preferably about 25 ° from the apex (36) spaced. Roof structure according to one of claims 5 to 9,
characterized by that the anchor elements (14) have a rectangular or trapezoidal cross section,
wherein all the longitudinal grooves (19, 20, 20 ') are arranged on a side of the cross section defined as the underside (35) and the following applies to the spacing D of the longitudinal grooves (19, 20, 20'): T <D <8 T, when T is the average depth of the longitudinal grooves (19, 20, 20 '). Roof structure for covering and at the same time thermal insulation of an existing roof (11), the roof structure (12) comprising a weather-resistant roof support (13) which is arranged on the weather-side on the existing roof (14) via a plurality of anchor elements (14) arranged in a predetermined grid (15). 11) can be fastened,
characterized by that several anchor elements (14) to prevent slipping are connected to one another via one or more connecting elements (37 to 41) to form an anchor chain (42). Roof structure according to claim 12,
characterized by that the connecting elements (37 to 41) are rigid, for example as a punch. Roof structure according to claim 12,
characterized by that the connecting elements (37 to 41) are flexible and tensile, for example as a wire or wire rope. Anchor element for use in a roof structure according to one of the Claims 5 to 14.

Images