Old Cellulose Attic Insulation

Most attics are insulated with blown in loose cellulose r 3 5 per inch blown in loose fiberglass r 2 5 per inch or fiberglass batts r 3 2 per inch.

Old cellulose attic insulation.

The vapor retarder on top of or between layers of insulation can trap moisture. Fiberglass is just that thin fibers of glass that trap air. Many types of cellulosic materials have been used including newspaper cardboard cotton straw sawdust hemp and corncob. In this unfortunate journey i have learned a lot about cellulose insulation and insulation installers.

We are also hopeful of being able to take advantage of. The loose material is easily blown into cracks crevices and hard to reach areas of an attic space. If you have loose fill insulation that is gray soft and without a shine it is probably cellulose insulation. Recycled glass or sand that s melted and spun into fibers.

Cellulose contains a high percentage of recycled paper and does not contain minerals. Before even calling any insulation companies have your attic checked by an hvac professional for loose torn damaged or old air ducts. We have a 700 sq. If this sounds like what you have it is likely cellulose insulation which contains a higher amount of recycled paper without minerals.

Lighter in weight than cellulose or mineral wool but it settles more than those materials so you ve got to put in a thicker layer to get the protection you need. And approximately 550 sq. Second story addition with 40 year old r 19 insulation in the attic that could be replaced or added to. Here are some tips and precautions that should be taken.

Batt or rolled insulation or blown loose fill insulation fiberglass or cellulose can be installed on top of old insulation. Cellulose is among the oldest types of building insulation material. Of attic space above the ground floor with no insulation and problematic access. A closer inspection indicates this gray puffy material has no minerals but appears like gray shredded paper.

Cellulose insulation is treated with boric acid which acts as a fire retardant pest repellent and aids the insulation in resisting mold and moisture. We are interested in the new owens corning pure safety insulation if you install it. Cellulose insulation is a perfectly safe type of insulation that is commonly blown into attics. Have them repaired or replaced if needed.

If you need commercial or home insulation in san diego or los angeles call us today for a free estimate 800 707 9278. Any existing batt or roll insulation in the attic should have the facing against the attic drywall floor or no facing at all. Cellulose is recycled newsprint treated with a fire retardant.