In Floor Heating Joist Insulation

Insulation in floor joists under radiant heat installation instructions.

In floor heating joist insulation.

Up to r 21 and a radiant reflector maximum benefit application note. About radiant insulation radiant heat insulation is installed to prevent heat loss from a pex radiant floor heating system most commonly pex embedded in concrete slab or stapled underneath the plywood subfloor. Installation instructions and illustrated drawings are recommendations only while proper local construction methods are the responsibility of the installer. This application works well in new construction and is also a very popular retrofit option.

Joist bays the open spaces between floor joists are prime hosts for insulation under specific circumstances. As long as you can see the floor joists from below then you can add radiant heat. Fill the rest of the joist bay with insulation. Since the rolls of radiant barrier are 48 wide you ll save a lot of time by clamping the entire roll in a vise or hanging it over a sawhorse marking 16 and cutting the entire roll with a sawzall or handsaw.

Pro radiant floor wood joists. When the basement or crawl space has vents installed insulating joist bays. Adding radiant floor heating insulation is the most cost effective approach long term. Installing radiant heat between the floor joists is a very effective way to get heat into any space.

This is also known as the staple up radiant heating application. There are 5 methods with varying levels of benefit note. Rfoil 2222 series reflective r 13 0 show more. For all methods inspect the structural integrity of the sub floor and make any needed repairs before installing infrastop.

Reflective insulation for radiant floor heating is tougher and easier to install than traditional foam board insulation that easily cracks and breaks and is made to resist corrosion.