September 22, 2017

Radiant Barrier

Radiant Barrier is an effective way to permanently reduce energy costs. It is a reflective insulation system that reflects heat instead of trying to absorb it. A radiant barrier insulation system is a layer of metalized film facing an airspace.

During the winter months 50-75% of your homes heat loss through the ceiling or roof and 60-85% of heat loss through your walls is radiant. In the hot summer months up to 93% of heat gain is radiant. By installing a radiant barrier in your home, your heat loss will be less in the winter and your heat gain will be less in the summer, saving money on your energy bills. This will also allow your HVAC system to work less and help prolong the life of your units.

Add Radiant barrier on the underside of your roof deck. Radiant barrier can lower your attic temperature by 30 degrees, improve HVAC duct performance up to 50 % (duct work and A/C unit is not subjected to the extra heat of the attic), is permeable, dose not trap moister, has low emissivity, has high reflectivity, improves efficiency of insulation and will save 10–15% on cooling cost. The foil type reflects 98% of solar radiation (spray on 80%).

We are proud  to say we don’t Spray. Spray on radiant barrier products Don’t Work. So why would anybody use them. Why! From what we see high pressure sales and gimmicks to make a fast buck.  Spray on radiant barrier is not a good substitute for foil. It only blocks 60 to 78% of radiant heat at best,  if installed 100% correctly, which never happens. It is not considered a radiant barrier by energy Star or the Government. It comes  off to the touch and over time.  It causes aluminum dust that often infiltrates to the living area of the home. It also cost just as much and often more than the foil, which blocks 98% of radiant heat. I know, I have used both in my home. Foil works, spray on does not!

Radiant Barrier FAQ:

Where do you install radiant barrier?

Radiant Barrier can be installed over your existing insulation, like a blanket. It can also be stapled under your rafters or crawl space.

Isn’t foiled fiberglass just as good as Radiant Barrier?

No. The foil on fiberglass is in direct contact with the attic floor. Aluminum foils becomes more conductive when in contact with a solid surface.

I already have plenty of insulation in my attic, do I still need a Radiant Barrier?

Regardless of the amount of insulation in your attic Radiant Barrier will help lower your heating and cooling costs. Energy savings range from 10-25% depending on climate, materials used, site, building configuration, family size, lifestyle, etc. Eastin Air will evaluate your home and advise you of your potential savings.