Attic Insulation Contractors Serving San Jose, CA

Certified Roofing Provides Expert Installation of Blanket (Batt) and Loose-Fill (Blown-In)
Attic Insulation To Customers All Over the South Bay Area.

Cooler in the summer and warmer in the winter? Proper attic insulation (and air circulation) is the key to a healthy roof and year round reduced energy bill as well as a more comfortable place to live and work. In fact, properly installed attic insulation is arguably the #1 way to increase the energy efficiency of your entire home or business and maximize the lifespan of your roof system - no matter what material it's comprised of. Do you have rooms that feel drafty or cold floors? Too hot or too cold? Utility bills that are getting higher? Do you experience fluctuating temperatures as you walk from room to room in your home? When you're upstairs, is it significantly warmer than the downstairs? All of these things and more could be signs that you don't have the proper amount of insulation or your attic insulation has been damaged by moisture.

Certified Roofing has provided Santa Clara county and the entire San Jose, CA area with expert insulation services since 1975. Our skilled and professional attic insulation team can help you save money and offer expert guidance on your project including choosing the right application process, the correct insulation materials for your specific property, and above all, the best and most affordable solutuion for your family and your budget. Remember, we are just a phone call away! Schedule a FREE insulation estimate today by calling (408) 226- 2222 (office).

Fiberglass Insulation
Fiberglass Insulation is by far the most common material used. It is inorganic, non-toxic, non-combustible, odor free and cannot absorb moisture. It is available in two types– blanket (batt) and loose-fill (blown-in).

Adding Attic Insulation
When adding additional insulation, you do not have to use the same type of insulation that currently exists in your attic. You can add loose fill on top of fiberglass batts or blankets, and vice-versa.

How Much Should I Add?
Insulation levels are specified by R-Value. R-Value is a measure of insulation's ability to resist heat flow. The higher the R-Value, the better the thermal performance. The recommended level for most attics is R-30 minimum, or about 12 inches.

Comfort – Savings
Adding needed insulation keeps interiors cooler in summer and warmer in winter. Comfort levels are improved. Energy is saved. Noise is reduced. Insulation pays for itself year after year.

You will appreciate our low prices. Our expert installers address all details, clean-up, and complete your job in a matter of hours.

insulation being blown in
Blown-in Fiberglass Insulation

Call Today for a free estimate 408.226-2222

From the Department of Energy:

insulating for energy savings

Where to insulate in a home.

Examples of where to insulate. 1. In unfinished attic spaces, insulate between and over the floor joists to seal off living spaces below. (1A) attic access door 2. In finished attic rooms with or without dormer, insulate (2A) between the studs of "knee" walls, (2B) between the studs and rafters of exterior walls and roof, (2C) and ceilings with cold spaces above. (2D) Extend insulation into joist space to reduce air flows. 3. All exterior walls, including (3A) walls between living spaces and unheated garages, shed roofs, or storage areas; (3B) foundation walls above ground level; (3C) foundation walls in heated basements, full wall either interior or exterior. 4. Floors above cold spaces, such as vented crawl spaces and unheated garages. Also insulate (4A) any portion of the floor in a room that is cantilevered beyond the exterior wall below; (4B) slab floors built directly on the ground; (4C) as an alternative to floor insulation, foundation walls of unvented crawl spaces. (4D) Extend insulation into joist space to reduce air flows. 5. Band joists. 6. Replacement or storm windows and caulk and seal around all windows and doors. Source: Oak Ridge National Laboratory

Quality | Craftsmanship | Service

At Certified Roofing we’ve been helping homeowners and commercial property owners save money for 30 years. We are a full service company. We design, build and install roofing systems, skylights, seamless gutters, attic ventilation systems, and energy efficient insulation for walls and attics. We repair and restore old tile roofs, wood shake roofs, and composition shingles.