Pumice Floor Insulation

W d l pumice insulation concrete blocks are manufactured to bs en 771 3.

Pumice floor insulation. It is also employed as a lightweight aggregate in precast masonry units poured concrete insulation and acoustic tile and plaster. Pumice is pyroclastic igneous. Pumice insulation should be about 2 feet 24 inches thick to give r 40 insulation value in cold climates design house with thick walls because pumice is not a high r value insulation. Most importantly though air seal the ceiling plane prior to adding insulation.

The capacity of an insulating material to resist heat flow is in compliance with new mexico state requirements for insulation. The r value of the completed wall official definition. Its natural properties make it inherently environmentally friendly. Use cavity wall construction.

Micro photo showing pumice vesicles. The pumice aggregate is the waste of volcanic ash which is inert and therefore will not react physically on chemically to outside forces. Furthermore it has excellent mechanical strength low specific gravity and a uniform white colour. Not as good as regular concrete but plenty strong enough for a residential floor.

It s the nature given physical makeup of pumice essentially a foamed stone that gives pumice concrete both its light weight and insulative qualities. By choosing pumice crete walls all these materials are replaced with pumice aggregate a small amount of cement water and an earth plaster finish. Perlite has an r value of 11 at six inches and is an insulating material that would not be damaged by water it is also load bearing. Crushing pumice destroys air bubbles thus decreasing insulation value.

It also seems like insulating at the ceiling plane of a ventilated attic would be a good fit. Concrete products magazine ran an article on our expanding pumice pozzolan processing capabilities and national distribution. I m researching remodeling a basement with cinderblock walls and a concrete slab floor and a garage with concrete walls and floor. Outside wall interior filled with pumice inside wall.

Pumice a very porous frothlike volcanic glass that has long been used as an abrasive in cleaning polishing and scouring compounds. Well cements made from hess pumice aggregates have performance advantages in strength durability elasticity permeability and insulation value over standard concrete. It is fire resistant with excellent sound proofing qualities and most importantly it is a high insulation material. It is strong and highly thermally efficient.

Pumice stone is a volcanic material.