John Sayers' Recording Studio Design Forum Archive

Does anyone have any experience or information on a product called Iso-Sill (from Acoustiguard).

It seems like the same product we can buy in 60x60 or 50x50 cm sheets 10mm thick for placing under washing machines and other heavy machinery. Made out of recycled rubber (mostly car tires).

If one were to use this, would you use a single long strip under the wall sill or cut into pads? If into pads, then what would be used to fill the spaces between?

you could use agglomerated foam or neoprene or a closed cell foam to do the same tasks - the key is to make the calculations to determine the right product for the given room weight. in the iso-sill - the expanded hole should have a wrap around bit of foam or neoprene tubing to prevent any direct contact if the plate/wall shift a bit.

Thanks Glenn,

I was already planning on using a decoupling strip of some closed cell foam which is sold by the roll called Randdammstreifen here.

I was just specifically interested in this particular product (Iso-Sill), as this kind of material was my previous consideration.

Assuming just a typical 8' high, 15' long, inside out wall of 2x4 timber, 2 layers of 16mm gyproc on one side and isulation and fabric on the opposite - (no other loading e.g. ceiling etc.).

The reason I decided to abandon the rubber was because I thought the weight compression would be too little.