Vermiculite In Chimneys

I have been told that i should have the chimney back filled with vermiculite after the liner has been fitted.

Vermiculite in chimneys.

It can be used to pour back down the chimney filling the void between the brick chinmey and the flexible flue liner. How many vermiculite bags of fireflex chimney insulation mix are needed for your installation. Vermiculite gives perfect coverage of insulation in difficult to reach places as well as an easy to manage level fill. When radiant heating pipes are laid in buildings they may be placed on top of a vermiculite concrete screed.

For this application a 6 1 mix is normally used. It can be used to pour back down the chimney filling the void between the brick chinmey and the flexible flue liner. In residential domestic chimneys vermiculite concrete mixes can be used for extra insulation between brickwork flue and liner. This stuff absorbs and retains water so if your chimney leaks water at all the insulation material will gradually get wetter absorbing like a sponge.

A chimney that is 13 long x 13 wide and is 15 tall with a 6 liner installed needs 8 bags of fireflex mix. Vermiculite is irritant free ultra lightweight non toxic odour free and fire proof up to 1300 degrees centigrade. Fireside s poured insulation is a mixed vermiculite masonry material used for chimney flue insulation. 100litre bag of vermiculite insulation for backfilling the chimney around the liner.

20 bags at 20 per bag. Micafil is typically used for chimney flue linings. The mi flues screw fix insulation back filler is a new concept to make the job of back filling your chimney with vermiculite as easy as possible when using a. 100litre bag of vermiculite insulation for backfilling the chimney around the liner.

The house is now about 100 years old i will be lining the chimney with a flexible 904 liner. Vermiculite is a light weight naturally occurring mineral which is an excellent heat insulator.