Insulation Under Concrete Slab Radiant Heat

The reflectix concrete slab insulation is an innovative easy to handle product that increases the energy efficiency of radiant floor and snow melt systems under concrete.

Insulation under concrete slab radiant heat.

When where how. Prodex total 16 inch 24 inch 48 inch 10m and fast action is radiant floor insulation used under wood flooring to reflect radiant heat upwards back into the home prodex is a thermal break vapor barrier and radiant barrier. Concrete insulation foam board blanket insulation is of crucial importance to a radiant heated slab with pex. Some people use twice the r value at the slab edge as they do under the slab.

Javascript seems to be disabled in your browser. Many of our customers ask us about alternate slab insulation materials like grid panels radiant foils bubble type insulation and thin foams of various kinds coated with vapor barriers. Need insulation for under concrete slabs slabs with radiant heat. 0 2 inch 5mm closed cell polyethylene foam.

Insulating a slab on grade depends on at least four factors. By lawrence drake published the radiant panel report july 2000. The foil within the product acts to spread out the heat signature of the heating coils. Gyp crete and similar lightweight concrete mixes typically made from concrete and gypsum plaster are well suited for your application.

Q how much insulation is necessary under a typical radiant slab. Without a thermal break between the slab and the ground heat will sink into the ground under the slab resulting in longer warm up time higher energy costs and overall poor performance of the system. Martin holladay explains insulating a slab on grade in the energy smart details department. A slab with such a heat sink could take days to fully cool down.

Downward heat loss from a radiant slab should not exceed 10 percent of upward heat output a ratio derived from european installation standards for floor heating systems it s possible to calculate the r value needed to meet. The workers in the photograph at page top where our concrete slab. Also make sure that you insulate the slab edge as that s where the heat loss from a slab is greatest. The climate the type of foundation whether the slab includes hydronic tubing for radiant heat and the severity of the local termite problem.

A common question that occurs during the design stage of a heated slab installation is one of slab insulation. This radiant heating insulation can be used under most flooring material. Admittedly these alternate materials have two distinct advantages over blue. Radiant floor insulation under wood floors.

Radiant heating system design or installation mistakes that must be avoided.