The roof is on the straw insulated monastery building in Germany

The architect Elke Kirst works for the Munich architectural office hirner & riehl architekten und stadtplaner. In this interview she explains facts and figures about the special roof of Haus St. Wunibald.

๐™’๐™๐™–๐™ฉ ๐™ข๐™–๐™ฉ๐™š๐™ง๐™ž๐™–๐™ก ๐™ž๐™จ ๐™ฉ๐™๐™š ๐™ง๐™ค๐™ค๐™› ๐™ข๐™–๐™™๐™š ๐™ค๐™›?
A stainless steel roof in double standing seam covering was chosen (FinoTex product from Rimex Metals).

๐™’๐™๐™–๐™ฉ ๐™ž๐™จ ๐™ฉ๐™๐™š ๐™จ๐™ž๐™ฏ๐™š ๐™–๐™ฃ๐™™ ๐™จ๐™ก๐™ค๐™ฅ๐™š ๐™ค๐™› ๐™ฉ๐™๐™š ๐™ง๐™ค๐™ค๐™›?
The roof has a total area of 640 m2 and a slope of 7%/ 4ยฐ.

๐™’๐™๐™ฎ ๐™ฌ๐™–๐™จ ๐™˜๐™๐™ค๐™จ๐™š๐™ฃ ๐™– ๐™ฉ๐™ž๐™ฃ ๐™ง๐™ค๐™ค๐™›?
The new building was intended to blend into the background of the historic monastery complex and not exceed it in height. Therefore, in contrast to the existing pitched roofs, a building with a low-pitched roof was proposed. Cladding with the existing plain tiles is not possible with this low roof pitch, so a double standing seam stainless steel roof was chosen.

๐™’๐™–๐™จ ๐™ฉ๐™๐™š๐™ง๐™š ๐™–๐™ฃ๐™ฎ๐™ฉ๐™๐™ž๐™ฃ๐™œ ๐™ฉ๐™ค ๐™˜๐™ค๐™ฃ๐™จ๐™ž๐™™๐™š๐™ง ๐™ง๐™š๐™œ๐™–๐™ง๐™™๐™ž๐™ฃ๐™œ ๐™ฉ๐™๐™š ๐™จ๐™ฉ๐™ง๐™–๐™ฌ ๐™˜๐™ค๐™ฃ๐™จ๐™ฉ๐™ง๐™ช๐™˜๐™ฉ๐™ž๐™ค๐™ฃ
๐™ฌ๐™๐™š๐™ฃ ๐™ฎ๐™ค๐™ช ๐™—๐™ช๐™ž๐™ก๐™ฉ ๐™ฉ๐™๐™š ๐™ง๐™ค๐™ค๐™›?
The roof is designed as a cold roof with a straw-insulated floor slab and a raised rafter roof to create the roof pitch.

Fire protection requires that the room partitions below either extend directly below the roof skin or that a room-enclosing fire-retardant finish be constructed. In order to achieve fire resistance class REI30, the straw-insulated construction was clad on the underside in two layers (OSB and GKFI board) and the room partitions were connected to it.

Photos: Lorenz Mรคrtl

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