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PostPosted: Sat Jun 16, 2018 9:16 pm 
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Is Rockwool Soundproof insulation same as Dritherm Slabs?

My builder told me to order Rockwool Soundprooof insulation from Buildbase for our internal partition (wood partition with plasterboard) and he would go collect it...

I don't recall seeing rockwool anywhere as from what I can see on the internet it has red on the packaging.

It looks as though they have been using Dritherm Cavity Slabs, it also says earthwool on the package, 100mm thickness..This is what they unloaded the same day they went to pick the rock wool up.

Is this the same thing? Or a cheaper alternative? The reason I ask is, I think the builder may have collected the rockwool, dropped it elsewhere and bought a cheaper alternative as with some other insulation (Celotex) he made me order 15 sheets and only delivered 10 after checking CCTV i have realised this..

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PostPosted: Sun Jun 17, 2018 12:09 am 
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AFAIK Rockwool and Earthwool in roll form are more or less equivalent - Earthwool is made by Knauf, Rockwool is made by.... Rockwool. Earthwool Dritherm is Knauf's equivalent to Rockwool Cavity or Cavity Batt - the Cavity Batt comes in a red package:

Rockwool Cavity Batt 001_01.png
Rockwool Cavity Batt 001_01.png [ 76.78 KiB | Viewed 547 times ]

In both ranges there are equivalent products and which are more or less interchangeable. Prices fluctuate in the market so on some jobs we get Earthwool, on others we get Rockwool delivered to install. FWIW I reckon that Earthwool is a less itchy product to install

"The person who never made a mistake, never made anything" - Albert Einstein

"I too will something make, And joy in the making" - Robert Bridges, 1844~1930

"Success is 99% failure" - Soichiro Honda

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