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
  • E04D13/16—Insulating devices or arrangements in so far as the roof covering is concerned, e.g. characterised by the material or composition of the roof insulating material or its integration in the roof structure
  • E04D13/1606—Insulation of the roof covering characterised by its integration in the roof structure
  • E04D13/1681—Insulating of pre-existing roofs with or without ventilating arrangements
• • E—FIXED CONSTRUCTIONS
  • E04—BUILDING
  • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
  • E04D11/00—Roof covering, as far as not restricted to features covered by only one of groups E04D1/00 - E04D9/00; Roof covering in ways not provided for by groups E04D1/00 - E04D9/00, e.g. built-up roofs, elevated load-supporting roof coverings
  • E04D11/02—Build-up roofs, i.e. consisting of two or more layers bonded together in situ, at least one of the layers being of watertight composition

Definitions

• the invention relates to a method for the rehabilitation of a flat and / or flat inclined roof of a building, wherein the roof has a support shell and disposed thereon thermal insulation, in particular of mineral fiber insulation elements and wherein a roof seal is disposed on the thermal insulation.
• the invention further relates to a roof structure of a flat and / or flat inclined roof of a building, consisting of a support shell and arranged on the support shell thermal insulation, in particular of mineral fiber insulation elements and arranged on the thermal insulation roof seal.
• roofs have insulating materials that are subject to aging and are damaged or destroyed in particular by the absorption of moisture, but also by mechanical stress when walking on the roof surfaces.
• the absorption of moisture is caused by leaky roof seals, with regular walking on the roof surfaces leads to heavy stress on the roof seal, which occur especially in joint areas of adjacent roof waterproofing membranes and the transition of the roof surface to roof structures.
• thermal expansion coefficients of the materials used which lead to tensile stress in the roof seal and thus to mechanical stresses in the roof waterproofing.
• a further object of the invention is to refine a roof structure in such a way that the renovation of a roof of a building can be carried out in a simple and economical manner without complete demolition of the thermal insulation. is feasible and in particular covering work during the renovation can be avoided.
• the solution of the problem provides in a method according to the invention that the roof seal is at least partially opened and / or at least partially removed, that on the thermal insulation, preferably on the partially opened and / or partially removed roof seal a second thermal insulation is applied across the board and that on the second thermal insulation a roof seal is applied across the board.
• the thermal insulation consists of at least two layers, a hygroscopic storage layer being arranged between the layers.
• a hygroscopic storage layer is arranged between the thermal insulation and the second thermal insulation. This hygroscopic storage layer extracts the moisture from the first thermal insulation and prevents the moisture from diffusing into the applied second thermal insulation.
• the hygroscopic storage layer is formed of mat and / or plate-shaped webs, so that the storage layer can be applied in a simple manner during the renovation with rapid renovation progress.
• larger areas of the roof can be processed without the risk of further damage to the heat insulation.
• On large-scale covers of the work areas can be omitted. It has also proven to be advantageous to form the hygroscopic storage layer from at least one gel web.
• the hygroscopic storage layer is formed from at least one thin insulating layer with a storage medium for moisture, in particular a granulate.
• the granules absorb moisture, while the thin insulating layer further improves the insulation performance.
• the hygroscopic storage layer is formed so as to block vapor, so that a transmission of moisture into the second thermal insulation is substantially prevented. Therefore, the vapor barrier region, for example in the form of a vapor barrier formed film between the storage layer and the second thermal insulation is arranged.
• the hygroscopic storage layer is integrated into the second thermal insulation.
• storage layer and second insulation are applied simultaneously to the roof area to be rehabilitated.
• the different materials allow a given installation orientation of suitably designed thermal insulation elements, so that installation errors are avoided or at least quickly recognizable.
• the thermal insulation and / or the second thermal insulation of Mineralfaserdämm instituten and / or Hartschaumdämm instituten, in particular of expanded or extruded polystyrene, polyurethane, phenolic resin foam or polyisocyanurate foam is formed.
• thermal insulation as well as the second thermal insulation of insulating elements identical material, such as hard foam or mineral fibers and provide combinations of insulating elements of the two ma- materials, so that the insulating elements of thermal insulation of hard foam or mineral fibers and the insulating elements of the second Thermal insulation made of mineral fibers or hard foam can be formed.
• the hygroscopic storage layer is formed of mat and / or plate-shaped webs.
• Such tracks are usually manageable by a person, so that the required for the renovation of a roof surface number of craftsmen is limited.
• Craftsmen are reduced to a low level.
• the use of machines can also be kept very limited.
• the hygroscopic storage layer is formed from at least one gel web.
• the hygroscopic storage layer is preferably formed from at least one thin insulating layer with a storage medium for moisture, in particular granules.
• the hygroscopic storage layer is formed vapor-blocking.
• the hygroscopic storage layer is connected to a layer of thermal insulation, so that the installation of the individual thermal insulation elements forming the heat insulation is tantamount to the installation of the feedstock. is layer.
• the storage layer is therefore covered immediately during installation by the thermal insulation, so that their storage capacity is not already reduced by an open installation by precipitation and / or high humidity and thus the remediation process, namely the discharge of moisture from the first, original insulation only inadequate Available.
• the hygroscopic storage layer is arranged on a partially open roof seal, wherein the storage layer is preferably connected to the roof seal, in particular glued.
• the partially opened roof membrane allows the diffusion of moisture from the first, initial thermal insulation through the openings in the roof sealing, while the remaining, not “opened areas of the roof waterproofing some protection against renewed penetration of moisture offer in the first heat insulation.
• Figure 1 shows a first embodiment of a roof structure in a cross section
• FIG. 2 shows a second embodiment of a roof structure in a cross section
• Figure 3 shows a roof structure to be rehabilitated according to the prior art in a cross section.
• FIG. 3 shows a roof structure of a flat roof.
• the flat roof consists of a support shell 1 in the form of a concrete ceiling.
• a vapor barrier 2 is arranged, which consists for example of a polyethylene film and covers the surface 3 of the tray 1 over its entire surface.
• the vapor barrier 2 is usually made of individual film webs, which are arranged side by side, wherein adjacent webs of the vapor barrier 2 are arranged overlapping each other.
• a thermal insulation 4 is arranged, which consists of individual mineral fiber insulation elements, said thermal insulation 4 has moisture retention 5, so that the thermal insulation performance of the thermal insulation 4 is thereby significantly impaired.
• a roof seal 6 which consists for example of bituminous membranes, which are arranged directly on the insulation 4, optionally connected to the thermal insulation 4, wherein individual bituminous sheets are arranged side by side and extending in the longitudinal direction of overlapping areas.
• the roof seal 6 loses its sealing function in the course of the years of use due to mechanical loads, so that in particular moisture can penetrate into the thermal insulation 4 via the overlapping areas of adjacent webs of the roof seal 6 and accumulate in the moisture deposits 5.
• FIG. 1 shows a first embodiment of a roof structure after a renovation of the roof structure according to FIG. 3.
• the roof seal 6 is opened in partial areas, so that openings 7 are provided in these partial areas, over which the moisture arranged in the moisture deposits 5 can diffuse through the roof seal 6.
• a second thermal insulation 8 is arranged, which has a greater material thickness compared to the first thermal insulation 4 and absorbs the ascending from the first thermal insulation 4 on the roof seal 6 moisture according to arrows 9. Due to the greater material thickness of the thermal insulation 8, the relative moisture content in the thermal insulation 8 in comparison to the relative moisture content in the thinner thermal insulation. 4 held relatively low, so that the heat insulation 4 recovers after complete removal of moisture their approximately complete thermal insulation performance, while the moisture in the storage 5 of the second thermal insulation 8 collecting moisture, the thermal insulation performance of the second heat insulation 8 comparatively low limits.
• the second thermal insulation 8 which likewise consists of individual mineral fiber insulating elements, has on its upper side a second roof seal 10 which, in accordance with the opened roof seal 6, consists of bituminous sheets arranged next to one another.
• the renovation of the roof structure shown in Figure 3 is carried out according to Figure 1, characterized in that the roof seal 6 is opened in a first step in partial areas, so that form openings 7, on the moisture in the storage 5 moisture contained can diffuse. Before the opened roof seal 6 is covered with the second thermal insulation 8, the first thermal insulation 4, a substantial proportion of the moisture contained can be withdrawn. Ideally, in this case, a moisture content in the first thermal insulation 4 is achieved, which corresponds to the humidity in the ambient air.
• the second thermal insulation 8 is applied to the open roof seal 6 in the form of mineral fiber insulation boards and / or mineral fiber insulation webs that completely cover the roof seal 6.
• FIG. 2 shows a second embodiment of a roof structure, which is improved in the distribution of moisture in the roof structure.
• the roof construction according to FIG. 2 corresponds to the roof construction of FIG. 1, so that the vapor barrier 2 is arranged on the support shell 1 and the original thermal insulation 4 and the roof seal 6 arranged thereon are arranged on the vapor barrier 2. Furthermore, the roof structure according to FIG. 2 has a second heat insulation 8 above the roof seal 6 and the second roof seal 10 arranged thereon.
• a hygroscopic storage layer 11 is arranged, which receives and stores the moisture diffusing out of the moisture inlays 5 of the thermal insulation 4 via the openings 7 in the direction of the arrows 9 and thus in the direction of the thermal insulation 8.
• the hygroscopic storage layer 11 consists of a non-illustrated thin insulating layer with a storage medium for moisture, which is formed as granules. Furthermore, the storage layer 11 is connected to the thermal insulation 8 via a vapor-blocking layer, so that the moisture absorbed by the storage layer 11 can not be dissipated into the thermal insulation 8, even at high saturation of the storage layer 11.

Landscapes

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

Priority Applications (5)

Applications Claiming Priority (2)

Publications (1)

Family

ID=37814494

Family Applications (1)

Country Status (8)

Cited By (1)

Citations (3)

Family Cites Families (1)

• 2005
  • 2005-12-16 DE DE102005060260A patent/DE102005060260B4/de not_active Expired - Fee Related
• 2006
  • 2006-12-15 WO PCT/EP2006/012139 patent/WO2007073896A1/de active Application Filing
  • 2006-12-15 UA UAA200808970A patent/UA87636C2/uk unknown
  • 2006-12-15 PL PL06829669T patent/PL1960613T3/pl unknown
  • 2006-12-15 HU HUE06829669A patent/HUE038101T2/hu unknown
  • 2006-12-15 EA EA200801519A patent/EA012832B1/ru not_active IP Right Cessation
  • 2006-12-15 EP EP06829669.8A patent/EP1960613B1/de active Active
  • 2006-12-15 DK DK06829669.8T patent/DK1960613T3/da active

Patent Citations (3)

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