Crawl space insulation in Redondo Beach CA - floors that stay warm underfoot

Cold floors over a crawl space nobody's been down in? We check it, seal the gaps and insulate so the rooms above feel right.

Request an estimate (424) 254-3847

Crawl space with a white vapor barrier covering the floor, reflective insulation on the walls, and black ductwork overhead.

Why are the floors in my house so cold?

Crawl space insulation in Redondo Beach puts batts, spray foam or a mix of the two up against the underside of your floor, so the rooms above stop losing heat into the open space below and the floors stop feeling cold.

Most calls we get at Redondo Beach Insulation Company for this work start with a cold floor in a room that never feels right, over a crawl space nobody in the house has ever been down in. The price turns on how big the space is, how much room there is to work, whether old insulation has to come out first through insulation removal, and whether batts or foam suits your floor. The schedule turns on what's down there, because repairs come before any insulation goes up. For your own figure, I come out, take photos of what's under your floor and write up a plan that shows what comes first and why.

How we do crawl space insulation

Down there, we start by checking the floor framing for rot or bug damage, because insulation covers the wood and you don't want to bury a problem you'll have to tear back open later. Repairs get settled before anything goes up, and old batts that have fallen or gotten soaked come out. Then our crew seals the holes in the subfloor around pipes and wires, since cold air finds those gaps the way water finds a bad gasket and goes right around the insulation. Last, the insulation goes up in full contact with the underside of the floor, with the edges filled as well as the middle, so there's no cold strip along the outside walls.

A cold floor isn't always the whole story. If the rooms feel drafty or the outside walls stay cold, we'll look at wall insulation too, and when air is getting in around the house as well as from below, our air sealing services close those gaps so the new insulation isn't fighting a draft.

Batts tight to the floor

Batts suit most crawl spaces where the joist bays are open and easy to reach. We seal the gaps first, cut each batt to fit its bay and support it up against the floor so there's no air gap behind it.

Spray foam on the underside of the floor

Foam suits floors crowded with pipes, wires and odd-shaped bays that batts can't fill without leaving holes. It goes on as one layer that sticks to the wood and fills in around whatever runs through.

Insulating the walls instead of the floor

When your furnace, ducts or water pipes sit down there, insulating the floor leaves them on the cold side. That's when we talk through insulating the crawl space walls instead, before you choose, because it changes how the whole space has to be handled.

Why Redondo Beach homeowners call Redondo Beach Insulation Company for crawl space insulation

I walk the crawl space with you

I do every estimate myself, and I walk the house with you, crawl space included. I learned insulation on other crews before starting this business in Redondo Beach in 2023, and I'd rather you see the photos and understand your own house than take my word for it.

Our crew installs, and I check it

Our crew does the install, and I check the work on site before we call it done. I'm looking for what usually goes wrong under a floor, like batts hanging loose, a hole left open around a pipe or a thin spot along the edges.

A smaller fix when that's enough

If sealing the holes and adding batts is all your floor needs, that's what I'll tell you. We're licensed and fully insured. Our work is backed by our satisfaction guarantee. Call (424) 254-3847 or use the form below to set up a visit.

Get photos of your crawl space and a written plan

Send your address and tell us whether your furnace, ducts or water pipes sit in the crawl space, and we'll reply within one business day to set up a free on-site estimate. After I've been down there, you get photos of what we found and a written plan showing what comes first and why, with no obligation to hire us.

Phone: (424) 254-3847
Email: support@redondobeachinsulationcompany.com
Location: Redondo Beach, CA 90277
Hours: Mon–Fri: 6 AM–10 PM, Sat–Sun: 7 AM–11 PM

Crawl space insulation rules and jobs in Redondo Beach

Whether your crawl space job needs a permit is something we check for your address rather than assume either way. When one is needed, the City of Redondo Beach takes applications online through its iWorQ portal and no longer accepts paper ones, and we handle that application as part of the job and tell you at the estimate what we found. California's energy code also sets requirements for work on existing homes, not just new construction, and the current version covers jobs done here now.

We're based in Redondo Beach and work across the South Bay, in Torrance, Hermosa Beach, Manhattan Beach, Gardena and other cities nearby. A lot of what we see are older houses on raised floors where the crawl space hasn't been opened in years, with batts hanging down, holes left from old plumbing work and one room upstairs that never feels right.

Questions homeowners ask about crawl space insulation

What does insulating a crawl space cost in the Los Angeles area?

Adding or replacing insulation in the Los Angeles area usually costs about $1,500 to $4,900 per job. That's what the work generally runs around here, not a quote from us. Where yours lands depends on what's under your floor, and you'll see what drives it once I've been down there.

What is the best way to insulate under a floor, spray foam or batts?

For most floors I'd seal the holes and use batts, and save foam for bays too crowded to fill cleanly. Foam slows heat well, which is what R-value measures, and it forms a continuous air barrier in one pass, but it costs more. Whichever you pick, the insulation has to sit in full contact with the floor above or it won't do its job.

Should I just seal my crawl space vents?

No, not by themselves. Closing the vents and nothing else can raise moisture under the house, and if a fuel-burning furnace or water heater down there relies on natural venting, it can create a deadly situation. A sealed, dry crawl space takes a fuller plan than closing the openings, so we'd work through that with you first.

How do I know if my crawl space has asbestos on the pipes or ducts?

You find out by having a certified asbestos abatement firm look at it, and we'll point out any old wrap on your ducts or pipes when we're down there. Older crawl spaces can have asbestos wraps on ductwork and plumbing. If any turns up, that firm inspects it and decides the best treatment, which adds a step before we insulate.

Do I need a permit to insulate a crawl space in Redondo Beach?

We check that for your address before work starts, because it isn't something we'll guess at. If your job needs one, we file it through the city's online portal mentioned above as part of the work, and I'll tell you at the estimate what we found.

What kind of contractor installs crawl space insulation in California?

In California it's work for an insulation contractor, which the state's contractor license board defines as anyone who installs insulation to control temperature or sound. So it's fair to ask whoever you hire about their license before they go under your floor.