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Wall Spray Cellulose Insulation

Blown cellulose is a great option for attics and retrofit applications where the dry fiber can be supported by an attic floor or enclosed wall cavity. But damp-sprayed cellulose provides an effective solution for open wall cavities in new construction.

Dampened cellulose is a sticky material. It is sprayed directly into open wall cavities between the studs, right against the exterior sheathing, where it stays put. It provides a solid, airtight and completely filled wall cavity. The basic cellulose fiber used in the sprayed application is the same as that used in the blown application: recycled newsprint with chemical additives. The difference is that sprayed cellulose is dampened with water and sometimes a little adhesive is blended into the mix.

Dry cellulose fiber is blown from a machine through a 2 1/2-inch hose much like its dry-blown counterpart. However, a water hose with high-pressure nozzle resembling a pressure washer is attached to the end of the fill hose. It sprays the fiber with a mist of water as it is fired from the hose. The spray dampens the surface of wall cavity at the same time to provide a sticky contact bond between the framing materials and the insulating fiber. The flow of water is adjusted by the applicator to establish an important balance. The fiber must be damp enough to stick permanently to the wall, yet not so wet to cause moisture problems. The damp fiber is shot until the wall cavities are overfilled, just proud of the wall thickness. The overfilled walls are then scraped flat to match the exact thickness of the wall framing using a rotating brush called a scrubber.

Sprayed cellulose is an eco-friendly material that is installed at a high density. Coverage is complete. There are no voids in the walls. All wire and plumbing penetrations are automatically and completely sealed. Our professionally installed application is airtight, comfortable, energy efficient, and safe. There are fewer thermal short circuits and virtually no convective currents within the wall cavities. On the whole, customers report a less drafty, more comfortable living experience. As a bonus, the superior air-tightness and absorptive qualities of sprayed cellulose provides a quieter indoor environment - sound proofing.

 
 

272 Burmont Rd. Drexel Hill, PA 19026         phone: (610) 623-5421         info@spsinsulation.com

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