Does Blown In Insulation Work

Blow in insulation is not a perfect solution for walls.

Does blown in insulation work.

After a few years blown in insulation tends to settle downward by a few inches which slightly reduces its overall thermal resistance known as r value because it leaves a small section at the. The material can be either fiberglass or cellulose and consists of fiber foam or other materials in small particles and can even feel like down. Just about any electrician plumber or contractor who has worked in an attic full of blown fiberglass will preach his words of hate and despise for what he simply refers to as blown insulation but he s making a big mistake. Blown insulation settles over time becoming less effective.

Especially in older homes wall cavities may have obstructions such as electrical conduit fire blocks and plaster keys that prevent insulation from filling the cavities. Expect to pay more for projects that require a higher r value or thicker insulation. Blown in insulation also called loose fill runs from 1 to 1 5 per square foot. Labor cost of blowing insulation.

Cellulose blown in ceiling insulation is a good choice for diyers. Insulation efficiently fills gaps. Good technicians will have techniques for getting around these obstructions. Blown in fiberglass is considered flame resistant.

Blown in cellulose is a last resort method of insulating a building. Blown insulation contains air pockets trapped between pieces of insulation during installation. Materials can be layered for added protection. A blown in insulation job requires two people one to keep the blower full and working and the other to work the hose in the attic.

It is also able to be blown indirectly over the top of existing insulation as an added layer. It doesn t do very good but require much less investment in time and disruption. Blown in cellulose has a higher r rating and is less expensive than either blown insulation like fiberglass attic insulation or fiberglass batts. Over time blown in insulation will settle and lose these air pockets reducing its effectiveness.

We include blown in attic insulation pros and cons but we can t recommend blown in fiberglass or cellulose as your best insulating choice. The amount that your blown insulation will settle depends on the material it is made from. Blown in cellulose is an environmentally friendly material made from recycled newspaper so it s easier on your skin and lungs. This type of insulation is able to be blown in parallel to joists in order to fill in the empty space.

Not all blown insulation is made of fiberglass. Blown in insulation flows down around wall studs.