Vermiculite Chimney Insulation

Micafil is typically used for chimney flue linings.

Vermiculite chimney insulation.

100litre bag of vermiculite insulation for backfilling the chimney around the liner. Vermiculite is a light weight naturally occurring mineral which is an excellent heat insulator. 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. Everguard insulation mix is a ready mix vermiculite based insulation material.

Fireside s poured insulation is a mixed vermiculite masonry material used for chimney flue insulation. I have my reservations about these methods. Update 26 sept 2018. Simply prepare by gradually adding 4 7 gallons of water.

Vermiculite is a hydrous phyllosilicate mineral which undergoes significant expansion when heated. It can be used to pour back down the chimney filling the void between the brick chinmey and the flexible flue liner. 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 also known as micafil is a excellent insulating material capable of withstanding temperatures in excess of 1000c the free flowing properties of loose fill vermiculite make installation very simple with the flue liner already connected to the stove pipe and register plate in place and secure leave the liner protruding from the top.

This can promote damp walls in rooms that previously were problem free. Pour the mix around the chimney liner while shaking the liner. I am a member of an installers forum. Vermiculite has many uses such as loose fill insulation for attic spaces block core fill insulation insulation around chimney flues and in gardening applications.

Vermiculite also known as micafil is a excellent insulating material capable of withstanding temperatures in excess of 1000c the free flowing properties of loose fill vermiculite make installation very simple with the flue liner already connected to the stove pipe and register plate in place and secure leave the liner protruding from the top of the chimney or pot then pour the insulation. Vermiculite is a naturally mined ore product that is non combustible and fire proof. Vermiculite is irritant free ultra lightweight non toxic odour free and fire proof up to 1300. Exfoliation occurs when the mineral is heated sufficiently and commercial furnaces can routinely produce this effect.

Vermiculite forms by the weathering or hydrothermal alteration of biotite or phlogopite.