Screed insulation EPS 50mm WLG035 or WLG031

Hello everyone,

on my construction site, I have to take care of the screed insulation myself. According to my documents, I need a 50mm EPS insulation with WLG035.

Now I have the following products in view:

23 packages Styrofoam EPS 035 100kPa 50mm (4.5m2/package) at €25.60/package or

23 packages Extrapor 031 150kPa 50mm (4.5m2/package) at €35.47/package.

Are the additional costs of nearly €230 worth it?

Best regards
Elektriker

I want to expand my question and ask whether an additional cost of about 70% is worth it if I use a PUR insulation board with WLG 022?

Regards

Whether it is worth it must be calculated. In other words, how much heat is lost downwards at your place in relation to the rest. If your floor is a weak point in your house, it can definitely be worth adding more insulation here. I installed 13cm PUR insulation board with WLG 022 + 2cm Rolljet with WLG 035.