Open Vs Closed Cell Attic Insulation In Texas

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.

Open vs closed cell attic insulation in texas.

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. Closed cell foam for insulation applications range in density from 1 7 lb cu. Open cell is more susceptible to mold and mildew but its expanding so it can hermetically seal an area. The higher the density the foam the heavier or stronger it becomes.

Open cell foam is full of cells that aren t completely encapsulated. Open cell polyurethane and closed cell polyurethane. Murmurs and hearsay about open cell spray foam insulation have been gaining traction for a while. Closed cell foams use enovate also known as 245fa which is.

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 and closed cell foam insulation use a blowing agent to forms the cells within it. Open cell foams use water as a blowing agent. Closed cell open cell foam.

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. An overview of closed cell spray foam insulation closed cell spray foam insulation is highly efficient. 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. There are two types of spray foam.

To support traffic and loads better. Closed cell foam is made up of cells that are as the name suggests completely closed. 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. 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.

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

Roofing applications typically use a 2 8 to 3 0 lb cu. In other words the cells are deliberatly left open. Id go with closed cell. Open cell foams typically weigh in at 0 4 to 0 5 lb cu.

Diyers can use this foam for small jobs such as insulating door frames. This makes the foam a softer more flexable material.