D&J Hawthorne Insulation ServicesD&J Hawthorne Insulation Services

Attic insulation in Hawthorne CA - a cooler upstairs with the gaps sealed first

Upstairs rooms that stay hot and an attic with thin, tired insulation. We look underneath, seal the gaps and add what's missing.

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Attic rafters cross beneath a roof coated in pale spray foam insulation.
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Attic insulation
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(424) 307-8033

How do you know your attic needs more insulation?

  • Upstairs stays hot

    The rooms under the roof are still warm long after sunset, while downstairs feels fine. That usually means thin insulation or open gaps in the ceiling, and every summer you wait, the AC runs harder to make up for it.

  • Insulation looks flat or thin

    You peek through the hatch and can see the tops of the ceiling joists, or the old layer is packed down and gray. The longer it stays that thin, the more of your power bill goes straight up through the ceiling.

  • Stains or droppings up there

    Water marks on the ceiling or droppings in the insulation mean something got in. New insulation laid over it only hides the problem, and a slow leak left alone can soak the framing.

What goes into insulating an attic in Hawthorne?

Attic insulation in Hawthorne adds a layer across your attic floor that slows the heat moving from a hot roof into the rooms below. It's rated by R-value, how well it slows heat, and a higher number means it works better. At D&J Hawthorne Insulation Services, we look for problems underneath and seal the gaps first, then add what your attic is missing.

Most calls I get start with an upstairs that won't cool down or an attic nobody has touched in years. The price mostly turns on how big the attic is, how much is already up there, how many gaps need sealing and whether anything has to be fixed or pulled out first. The schedule turns on those same fixes, because anything that needs a roofer or an electrician gets handled before we insulate. When I come out, the written estimate gives you the price and the plan, and it lists anything that should be fixed first.

Details to note before an estimate

  • Rough square footage of the house
  • About when the house was built
  • Inches of insulation already up there
  • Rooms that run hot or drafty
  • Any roof leaks or ceiling stains

How we handle attic insulation

I start by looking for the things insulation would only hide, like roof leaks, old wiring and bath fans that blow into the attic instead of outside, because I'd rather tell you about a problem than bury it. Then I measure how many inches are already up there, since California's energy code counts your old insulation toward the total, so what we add depends on what you have. Our crew seals the gaps around pipes, wires, lights and the hatch before any insulation goes in, because national attic guidance puts sealing first to get the most savings, and insulation over a draft just fights it. We keep the layer full out to the edges and the vents at the roof edge clear so the attic can still breathe, and I check the work before we call it done.

If your attic mostly needs more of what's already up there, that's blown-in insulation, loose fill we blow in through a hose. When the hot rooms are only part of it, and the walls, the crawl space or the room over the garage need a look too, we can plan it all together as home insulation. We're based in Hawthorne and do the same work in Inglewood, Gardena, Torrance, El Segundo and the other cities around it.

Other work that often goes with it

  • Blown-in insulation

    When the old layer is clean and dry but too thin, more loose fill brings it back up to depth.

  • Home insulation

    If the hot rooms are part of a bigger pattern, we look at the walls, floors and crawl space along with the attic.

What happens after you call about your attic?

  1. Call us or send the form

    Call (424) 307-8033 or use the form, and we get back to you to set a time for me to come out. Evenings and weekends work too, since we answer until 11 PM every day.

  2. I look at the attic myself

    I go up and check what's there, how deep it is and what needs fixing. You get a written estimate with the price, the plan and anything that should be fixed before we insulate.

  3. Our crew seals, then insulates

    The crew I trained covers your floors and belongings, then seals the leaks before any insulation goes in. That way the new layer isn't fighting a draft from the start.

  4. We walk the finished job

    I check the work and walk it with you so you can see what you paid for. Ask me anything, because no question is too small.

Questions before you insulate your attic

How much does attic insulation cost in Hawthorne?

Around the Los Angeles area, a blown-in insulation project usually costs about $1,600 to $3,600 per job, and that's the going market price for the job, not our quote. Your attic can land on either side of that once sealing, repairs or pulling out old material come into it. I'll give you your own number in writing after I've seen the attic.

What should be fixed before adding attic insulation?

National attic guidance says to deal with live knob and tube wiring, the old style run on porcelain knobs, along with vermiculite, bath fans venting into the attic, roof leaks, and unvented kerosene heaters or gas fireplaces before any sealing or insulating starts. If you have a gas water heater or furnace that vents on its own draft, sealing the house can sometimes pull its fumes back inside. Testing those appliances before and after sealing shows whether they still vent properly.

Does an attic insulation contractor need a license in California?

In practice, yes, because California only lets someone work without a contractor's license on small jobs under $1,000, and attic insulation around here usually costs more than that. Look for a contractor licensed by the Contractors State License Board. We're fully licensed and insured.

What paperwork should I get after attic insulation is installed?

You should get a written statement from the installer certifying that the insulation meets California's energy code, because the code puts that on the contractor who installs it. If nobody offers it when the job ends, ask for it. We hand it to you when we walk the finished job, and the work is satisfaction guaranteed.

How do I know if my attic has vermiculite insulation?

Vermiculite looks like light, pea-size gray flakes, and it should be left alone until an approved lab tests it for asbestos. The local health department can name an approved lab, and South Coast AQMD is the local enforcement authority for asbestos, which matters if the test finds it. If I spot it on the estimate visit, nothing goes on top until you know what it is.

How long does attic insulation take?

The install itself is usually the quick part, and what stretches the schedule is anything that has to be fixed before we start, like a roof leak or wiring that needs an electrician. Old insulation that's soaked or full of droppings has to come out first too, or the problem stays under the new layer. Once I've seen the attic, the estimate tells you what has to happen and in what order.

Get a written price and plan for your attic

We respond within 1 business day to set a time, and the in-person estimate is free with no pressure to book. I come out myself, look at the attic and put the price and the plan in writing, including anything that should be fixed first.

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Book a look at your attic

Call (424) 307-8033 or use the form, and jot down where the hatch is, which ceiling lights are recessed cans and any gas appliances in the house so I can plan the visit.

Request an estimateCall (424) 307-8033