Hello,
on the plans for my parents’ house (built in 1961), which I want to renovate, it says the following for the pitched roof insulation:
NOWESTA PANELS 2.5cm (1 inch Styrofoam)
(see picture). Is this Styrofoam, or could it also contain asbestos? Can anyone tell me if the term NOWESTA means anything?
Best regards

on the plans for my parents’ house (built in 1961), which I want to renovate, it says the following for the pitched roof insulation:
NOWESTA PANELS 2.5cm (1 inch Styrofoam)
(see picture). Is this Styrofoam, or could it also contain asbestos? Can anyone tell me if the term NOWESTA means anything?
Best regards
Search for Novostaplatten with a "v" and you will find: wood wool lightweight panels (WWLP) / Heraklith boards / sauerkraut boards. These are boards made of cement-bonded wood wool, gray in color, but apparently without asbestos (asbestos is not a binder but a fiber itself). They are said to provide good sound insulation but poor thermal insulation, so combining them with 10 mm (0.4 inches) of expanded polystyrene makes sense. Together, they may have made the roof reasonably airtight, but thermal insulation standards today are quite different (in the 1970s, between-rafter insulation with mineral wool became common).
https://www.instagram.com/11antgmxde/
https://www.linkedin.com/company/bauen-jetzt/
https://www.instagram.com/11antgmxde/
https://www.linkedin.com/company/bauen-jetzt/
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