Foam Attuc Insulation Vs Attic Fan

However in a traditionally insulated attic insulation on the ceiling the attic is vented.

Foam attuc insulation vs attic fan.

This quiet fan is ducted to the atmosphere. Affix rigid foam insulation to the attic side of the hatch or door. Loose fill or batt the common term for blanket insulation. Add weatherstripping around the perimeter and a sweep to the door of a walk up attic.

Earlier this year i got a question about a home that had spray foam insulation in the attic. 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. If you don t have hvac and ducts in the attic spray foam on the roofline isn t really necessary. For diy attic insulation you ve got two choices.

Find out whether you have to worry about an attic fan blowing your insulation around. We d only use one or the other. Dimmer on your recessed lights for improved efficiency and low energy use. Moisture is also another huge issue when it comes to spray foam insulation in an attic.

If we assume that the outside air is 10 f warmer than the desired. Whereas too little spray foam insulation can leave for thermal bypass because of the complete lack of insulation in the attic. Attic hatch or door. Direct all exhaust fans and vents to the exterior.

When we seal the attic with spray foam it s as tight as a butter tub. 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. In a new home spraying foam in the roofline can bring the ducts inside the envelope without having to redesign the system and house. The alternative would be to install an attic fan that would draw cooler outside air into the attic while expelling the hot air.

This quiet fan is ducted to the atmosphere. 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. If you have air conditioning and you use an attic fan you tend to suck the air conditioning out of the house as well.

Open cell foam insulation in attics. Recently we began installing a small exhaust fan in every attic that is getting spray foam insulation. It has been said that insulating with spray foam insulation at the roof line will lead to moisture problems with the roof sheathing. 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.