How To Install Spray Insulation In Attic
However in a traditionally insulated attic insulation on the ceiling the attic is vented.
How to install spray insulation in attic. Put a dehumidifier up there plug it in set it between 50 and 60 rh and forget about it. After from sealing things up and fixing your pressure balance this is usually the best solution to high humidity in a spray foamed attic. Lower your energy bills by following these easy steps to insulate your attic using cel. Whereas too little spray foam insulation can leave for thermal bypass because of the complete lack of insulation in the attic.
For the center areas hold the hose level and blow in insulation evenly until you ve reached your level lines photo 6. This will give you support to make a straight and even cut. The attic is by far the most important space to insulate in the house. Roll the sheets out and cut them perpendicular.
If installing fiberglass mats start by laying the mats at the furthest point from the attic access. Blow in insulation until the hopper is empty. It has been said that insulating with spray foam insulation at the roof line will lead to moisture problems with the roof sheathing. When you reach a wall pull the insulation back over a joist lay a level over the insulation and cut across the level.
Move across the attic until you ve hit your desired height at every point. If installing shredded insulation fill the attic space at least 15 inches high with insulation. Moisture is also another huge issue when it comes to spray foam insulation in an attic. A dehumidifier can remove it.
Earlier this year i got a question about a home that had spray foam insulation in the attic. Work your way across the attic until you are back at the attic access. When we seal the attic with spray foam it s as tight as a butter tub. Nothing unusual about that.
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.