Foam Attuc Insulation Vs Attic Fan

In a new home spraying foam in the roofline can bring the ducts inside the envelope without having to redesign the system and house.

Foam attuc insulation vs attic fan.

Open cell foam insulation in attics. If we assume that the outside air is 10 f warmer than the desired. This quiet fan is ducted to the atmosphere. If you don t have hvac and ducts in the attic spray foam on the roofline isn t really necessary.

Recently we began installing a small exhaust fan in every attic that is getting spray foam insulation. Attic hatch or door. The alternative would be to install an attic fan that would draw cooler outside air into the attic while expelling the hot air. Nothing unusual about that.

As long as they re properly installed both closed cell and open cell foam insulation act as an effective air barrier in your attic. Add weatherstripping around the perimeter and a sweep to the door of a walk up attic. Dimmer on your recessed lights for improved efficiency and low energy use. For diy attic insulation you ve got two choices.

These super efficient units have a speed controller think. Get tips on installing sufficient attic ventilation to vent the air that gets pulled up there. However in a traditionally insulated attic insulation on the ceiling the attic is vented. Affix rigid foam insulation to the attic side of the hatch or door.

I d blow insulation on the attic floor after air sealing of course. I was looking at getting insulation blown in as well as potentially adding an attic fan gable mounted and then i saw some articles online about radiant barriers. When we seal the attic with spray foam it s as tight as a butter tub. So the ac was leaking into the attic and the insulation is awful energy bills were high to boot.

This quiet fan is ducted to the atmosphere. Direct all exhaust fans and vents to the exterior. It has been said that insulating with spray foam insulation at the roof line will lead to moisture problems with the roof sheathing. If you have air conditioning and you use an attic fan you tend to suck the air conditioning out of the house as well.

A lot of builders and homeowners are going with spray foam insulation because of the airtightness benefits but then the questioner mentioned that the spray foam contractor had intentionally left big holes to the outside by not sealing the gable vents. We d only use one or the other. Find out whether you have to worry about an attic fan blowing your insulation around. One huge benefit of the spray foam insulated attic is that conditioned air leakage from the ac furnace duct system is contained and used to condition the attic.

Moisture is also another huge issue when it comes to spray foam insulation in an attic.