Spray Radiant Barrier Roof

When installing attic insulation a case can be made for both radiant barrier sheathing with typical types of insulation as well as spray foam insulation.

Spray radiant barrier roof.

A radiant barrier reduces the radiant heat transfer from the underside of the roof to the other surfaces in the attic. Take a look at the chart below from rima to compare some common brands. A radiant barrier works best when it is perpendicular to the radiant energy striking it. In these attic space applications there is an air space below the radiant barrier.

Liquidfoil attic radiant barrier paint is the highest performing ircc coating on the market integrating a tremendous 84 reflectivity with a permanent adhesion to resist flaking off over time. We take a look at how radiant barriers work the different types of radiant barriers and some of the. Radiant barriers are utilized to reduce summer heat gain in attics and help to improve the efficiency of green building envelopes. Radiant barrier sheathing is inexpensive and reflects thermal radiation to keep attic spaces cool.

The duct work for my second story hvac system is in my attic and i want to bring it into the conditioned envelope of my home. At the time of this writting the best spray on radiant barrier coating comes in at 0 16. A number of factors should be taken into consideration when choosing between these two especially the climate zone that you re building in. The durable coating resists uv radiation and reflects heat from the sun for superior energy savings and can be applied over spray applied.

The hot roof material then radiates its gained heat energy onto the cooler attic surfaces including the air ducts and the attic floor. Lo mit i is an energy star certified radiant barrier roof coating that is formulated to reduce roofing surface temperatures at low cost. Often referred to as a spray radiant barrier or radiant barrier paint technically liquidfoil is an ircc interior radiation control coating. With the rise in popularity of radiant barrier insulation there has been an influx of products marketed under the term radiant barrier paint that are designed to be sprayed on the underside of the roof decking in the attic.

The emittance value of our radiant barrier products is 0 05. My second question is whether it makes sense in climate zone 4a to insulate seal a walk up attic with spray foam when the attic already has a radiant barrier. Lo mit is a silver colored non thickness dependent low emissivity paint which may be used in almost any application where infrared heat reflectivity or diffuse light reflectivity is required. A radiant barrier can be effective with an asphalt shingle roof only when installed inside the attic either to the underside of the roof decking or to the underside of the roof rafters.

A radiant barrier can lower heat transfer from attics to the building below keep the attic space cooler and lower cooling costs by up to 17 in warmer climates.