Garage roof
Posted: Sat Sep 27, 2025 3:23 am -1100
Hello,
I am calculating the roof of a car garage (Sine curve, mean value 12 degrees Celsius in winter). Component - MW thermal insulation on OSB, without vapor barrier and top layer waterproofing with Sd 140m, without infiltration flow. After the calculation, it turns out that the amount of moisture under the waterproofing bitumen membrane rapidly increases to over 400 kg/m3, which in my opinion is unrealistically high and straight. The question is (1) can it really be so (2) where to look for the error, if it is still too much?
Best regards,
Andris
I am calculating the roof of a car garage (Sine curve, mean value 12 degrees Celsius in winter). Component - MW thermal insulation on OSB, without vapor barrier and top layer waterproofing with Sd 140m, without infiltration flow. After the calculation, it turns out that the amount of moisture under the waterproofing bitumen membrane rapidly increases to over 400 kg/m3, which in my opinion is unrealistically high and straight. The question is (1) can it really be so (2) where to look for the error, if it is still too much?
Best regards,
Andris