Since 1985 cellucrete corp has been applying lightweight insulating concrete for roof decks structural concrete engineered fill applications and floor fill installations.
R value of lightweight insulating concrete roof.
Each design encapsulates the insulation board in insulating concrete.
Lightweight insulated concrete also known as lwic is a material intended for use as an insulation and substrate for support and attachment of roofing membranes on slope roofs the lwic systems are composed of either aggregate or cellular concrete.
To assist the designer manufacturers publish tables of insulation values for various thicknesses or combination of materials used in roof insulation.
The bag in which the perlite or vermiculite is purchased recommends the mix proportions needed to achieve various unit weights of fresh concrete and oven dry concrete.
For instance if you have a material with an r value of 12 attached to another material with an r value of 3 then both materials combined have an r value of 15.
Ve r miculite insulating concrete is made of expanded ve r miculite ag g re g a t e air e n t r aining admixture p o r tland cement and water all mixed and applied according to pre cise pro c e d u re s.
The r value of the insulating concrete depends on its unit weight and thickness.
When provided with insulation a thermal r value of r 30 can be easily achieved without insulation delamination warping or attachment concerns.
The expanded p r oduct weighs from 6 to 10 pounds per cubic foot.
Hol e board specifications r values and compliances for vented expanded polystyrene insulation for all lightweight concrete roof decks.
R3 r18 r21 total roof r value.
Unlike rigid board siplast lightweight insulating concrete is reroofable and therefore a truly sustainable insulation solution.
R value or when a sloped system is installed that the insulation meet an average r value.
A g g r egate of great value for fill and insulating concre t e.
Cellucrete has established itself as the leader in the lightweight insulating concrete industry with a proven track record of high quality installations throughout the.
The largest single use for lwic is as a roofing base and thermal insulation for industrial and commercial buildings with low slope roofs.
This process provides fire protection prevents air infiltration and bonds the total insulation system to the substrate.
In simple terms r values measure the effectiveness of insulation and a higher number represents more effective insulation.
Siplast lightweight insulating concrete systems january 2012.
The percentage increase increase increase original number 100.
There are several benefits for the use of lightweight concrete on current roof applications.
