Open Vs Closed Cell Attic Insulation In Texas

Diyers can use this foam for small jobs such as insulating door frames.

Open vs closed cell attic insulation in texas.

Closed cell open cell foam. Open cell foam is used in a wide range of applications such as for noise reduction in sound rooms home insulation metal buildings under roof deck for semi conditioned attics and more. Open cell foams use water as a blowing agent. In other words the cells are deliberatly left open.

Murmurs and hearsay about open cell spray foam insulation have been gaining traction for a while. The open cell polyurethane foam has an r value of 3 5 to 3 6 per inch with a price tag of 1 1 20 square foot. Seems like you wouldnt want to seal something susceptible to mold growth but maybe thats just me. The evaluation service report esr for spray foam insulation products provides a valuable resource based on a third party review of testing information useful for utilizing these.

Closed cell is denser better insulating. For an average 2 200 square foot home open cell foam insulation costs 1 254 for the minimum 1 5 thickness and 2 926 to spray the maximum 3 5 thickness on average while a closed cell foam installation costs 6 776. Open and closed cell foam insulation use a blowing agent to forms the cells within it. An upgrade from traditional insulations like fiberglass batts or blown cellulose texas insulation s open cell foam creates an air seal to keep conditioned air indoors and dust and pollen out.

Open cell polyurethane and closed cell polyurethane. To support traffic and loads better. This makes the foam a softer more flexable material. Closed cell foams use enovate also known as 245fa which is.

Open cell foams typically weigh in at 0 4 to 0 5 lb cu. Closed cell foam is made up of cells that are as the name suggests completely closed. A spray insulation is referred to open cell or closed cell because of the difference between the small bubbles cells that make up the foam. Open cell is more susceptible to mold and mildew but its expanding so it can hermetically seal an area.

It rots roofs people have told me. Both low density open cell and medium density closed cell spray foam can be used in an unvented attic to provide the needed thermal resistance and airtightness. Not long ago someone even told me that in florida roofing companies won t let their workers go up on roofs with open cell spray foam because the roofs are so spongy the guys fall right through. Open cell foam is full of cells that aren t completely encapsulated.

There are two types of spray foam. Roofing applications typically use a 2 8 to 3 0 lb cu. Id go with closed cell. For bigger jobs such as roof attic floor and wall insulation you will.

The cells are pressed together so air and mositure are unable to get inside the foam. Spray foam insulation costs 1 36 to 2 63 per square foot depending on if it s open or closed cell.