Recent content by Jazz q

John D so to confirm you think the earthwool product is better than rockwool? I always though rockwool was the better product as the earthwool only has an R rating of 2.25

R value for rockwool is better than earthwool

I've attached a photo of the insulation that's been used by my builder. Remember it's for an external cavity wall. In the spec it just says 100mm Rockwool full fill cavity insulation. I've also attached a screenshot of the one I think he should have used. Considering I have let the contract out...

I am having a single storey extension built and the builder has used 100mm Knuaf Earthwool insulation in an external cavity wall instead of 100mm Rockwool full-fill cavity insulation as specified in the drawings. I am annoyed at this because I understand rockwool is a better product and has...