If the condition are given that the stock structure remains, a distinction is usually made between a waterproofing and a waterproofing thermal renovation.
Having a roof restoration is a delicate matter, the inventory layers must be investigated with sampling openings. Bitbau DÖRR assists in site inspections, building physics reviews, wind uplift calculations, drainage dimensioning and much more.
After a thorough inventory check, where the remaining of the roof layers is given, can through a bituminous sealing sheet a durable and functional redevelopment solution be realized.
An additional energy-efficient renovation is by applying XPS insulation (RAVATHERM XPS X 300 SL) on the seal which is both effective and economical. This type of roof is called Plus Roof.