Attic insulation questions
Some attic questions need a whole guide. These don't. Each page below takes one question people actually type into a search bar and answers it in a few minutes of reading, with the source for every fact.
Before you spend anything
Whether it pays here, and how long it keeps working.
2 pages
Is it worth it?
Fog-side and valley homes get different things out of the same job. Here's how to tell which side of the line your house is on.
How long it lasts
Insulation doesn't have a use-by date, but plenty of Bay Area attics hold insulation that stopped doing its job years ago. Here's what wears it out.
Health questions
Answered from CDPH, CDC, NIOSH and OEHHA, and nothing beyond them.
2 pages
Rodent droppings
You found droppings on the insulation. Before you grab a broom or the shop vac, read what California's health department says to do instead.
Is it safe?
Fiberglass has a cancer listing in California and cellulose has chemicals in it. What those facts mean, read exactly as the agencies wrote them.
Fire questions
Materials, light fixtures and embers.
2 pages
Is it flammable?
Glass, stone, paper and plastic all get called insulation. They behave very differently near heat, and in a wildfire the weak point isn't the insulation.
Recessed lights
Those round ceiling lights poke up into the attic. Whether insulation can touch them depends on two letters stamped inside the housing.
Where the question touches health or fire, the answers stick to what official agencies publish: the California Department of Public Health, the CDC, NIOSH, OEHHA, the Department of Energy, the CPSC and the California Energy Commission. We quote them closely and don't go further than they do. Every one of those pages ends with a link to the agency's own page, so you can read it in their words.
And where the answer is "it depends on your attic", we say what it depends on. If you'd rather someone looked, the services page lists what we do, and you can book a free inspection or send photos instead.
Let's go look at your attic.
Start with your ZIP code. A few questions later you'll have a Bay Area market range, and you can pick a time for a free inspection.
What happens next
- 1
Price range online. The estimator gives you a Bay Area market range in a couple of minutes.
- 2
Free inspection. In your home, or from photos or video you send if you'd rather skip the visit.
- 3
Written quote. What comes out, what gets sealed, what goes in.
- 4
Install day. Done by our own crews.
- 5
Cleanup. Old material bagged and hauled away, the work area cleaned.
- No deposit until you sign, and never more than 10% of the contract or $1,000, whichever is less.
- Every customer gets five business days to cancel after signing.
- Materials carry the manufacturer warranty.
Rather talk it through?(760) 655-5959