More commonly known as loose-fill insulating, blown insulation is a technique used for insulating structures that are existing and where insulation was probably provided earlier but which has either got damaged or needs replacement for other reasons. On the broader perspective blown insulation experts fill in wall cavities, attic spaces, gaps between outer and inner wall sections and any empty space with appropriate filling material that's blown in using specialized pneumatic equipment which ensures the material into targeted space has an even spread. No, its not polyurethane that's blown in by Riverside blown insulation contractors, but rather traditional materials like fiberglass or mineral fibers that comprise of rock wool with fiberglass and cellulose.

Fiberglass

Having spun fibers of glass, this loose fill material is made through a process involving throwing of molten glass through minuscule heated holes in very high speed which gives extremely thin and long fibers that are later collected as a matte. Installing this material using blown-in technique requires high precision otherwise fibers can cause injury. Most roofing contractors who provide fiberglass insulation blowing-in use protective gear while performing the task. In areas like spaces have wires, electrical boxes or a pipe network, fiberglass has to be cut and fit which is tedious but despite this fiberglass batt is preferred choice for blown insulation in homes or buildings housing commercial enterprises.

Cellulose

Cellulose based insulation is great when one wants improved settlement in cavities between walls. Shredded newspaper, when treated with fire-based retardant produces cellulose blown-in insulation material. As a roof/ wall/ gap insulator cellulose is several times denser and so has substantially low leakage margin when compared to fiberglass. Specific blowers are used for filling in cellulose which can flow around any oddly shaped or placed obstruction and conforms around pipes or wires just as well. Having R value close to that of fiberglass, cellulose is much thinner and resists moisture to higher degree. On the flip side it may cause metallic surface to corrode slightly.

Mineral

Decidedly more eco friendly than fiberglass, mineral wool as a material for blown insulation is easily handled and installed, has greater mass density and is non combustible. Recommended by Riverside blown insulation experts as the right material for filling and insulating cavity walls, mineral wool has mechanically granulated rock wool that's been treated with water repellent. It's stable and insulates effectively as long as a building lasts, and is blown in with flexible hose fitted to blowing machine after drilling of injection holes in targeted areas.