What is a better insulator perlite or vermiculite?
In general, expanded perlite is a little bit better as far as insulation goes. When you use exfoliated vermiculite in a dry state it would be fine as well. In case you want the insulation to be rigid through mixing with clay slip, use perlite, this won’t take up as much water as vermiculite. Thank you!
Does perlite make good insulation?
Perlite insulation is a type of insulation made from volcanic rock. The rocks used to make perlite insulation have a high water content, which helps to create large quantities of air pockets within the rock when heated. These air cells make perlite an excellent insulator, giving it a high level of thermal resistance.
What is the R-value of perlite insulation?
about 2.7 per inch
Perlite, including perlite building Insulation is a non-fibrous non-asbestos-containing material which has an R-value of about 2.7 per inch and would not be expected to contain asbestos.
Does vermiculite hold heat?
Vermiculite is light and porous and is, therefore, an excellent heat insulator.
How much heat can vermiculite take?
In certain mixes for insulation purposes, vermiculite and perlite can withstand temperatures of up to 2,000°F and 2,100°F (1,093°C and 1,149°C) respectively before excessive shrinkage occurs.
Does perlite insulation absorb water?
The surface of perlite is made up of the outer convex shells of glass bubbles and concave openings, so each particle can soak up a good amount of water. While perlite can hold a variety of liquids, many of the actual applications involve water, so it is used here to illustrate and simplify this process.
What is the insulation value of vermiculite?
about R-2 per inch
Expanded vermiculite is lightweight, fire-resistant, and odorless; since it has an R-value of about R-2 per inch, it was used for decades as an insulation material.
How thick is vermiculite insulation?
When heated to a high temperature, vermiculite “exfoliates” or pops like popcorn into lightweight pieces of material, ideal for use as thermal insulation. Pieces of vermiculite are anywhere from 1/4 to 1 inch thick, and are shaped like little silver, gold or brown nuggets.
What health risks are there with vermiculite insulation?
Leave vermiculite insulation undisturbed in your attic or in your walls.
How to dispose of vermiculite?
attic rewiring
Does your vermiculite insulation contain asbestos?
Vermiculite loose-fill insulation is one of the most common household materials that contains asbestos . Vermiculite insulation has a pebble-like appearance and typically is a grayish-brown or silvery-gold color.
Where to buy vermiculite locally?
– The Schundler Company—Perlite and Vermiculite Products since 1951 , or – The Vermiculite Home Page, or – The Vermiculite Institute, or – The Vermiculite Association