Insulation Contractor in Hawthorne, CA - Cooler Rooms in Older Stucco Homes
Evergreen Lawndale Spray Foam Insulation is an insulation contractor working in Hawthorne, CA. We seal attics, top up or replace tired insulation, and insulate walls and crawl spaces so hot rooms, drafts and cold floors ease up.

- Fully licensed and insured.
- Free estimates at your property.
- We respond within 1 business day.
Hawthorne homes as we find them on the job
Hawthorne is a packed city of small lots, where rows of single-story stucco houses from the years after the war sit close to apartment buildings, and shops and industrial buildings line the bigger streets. It looks a lot like Lawndale, where we're based, and like Lennox to the north, so the attics we climb into here feel familiar. Plenty of these houses have been added onto over the decades, with a garage converted or a bedroom built over it.
That housing shapes the job. Low roof pitches leave tight attics with small hatches, ducts often run right through them, and the edges near the eaves are hard to reach, so we work those spots by hand instead of leaving them thin.
Insulation services we do in Hawthorne
Spray foam insulation
When ducts run through a low Hawthorne attic, spray foam on the underside of the roof keeps them out of the worst heat and seals gaps at the same time.
Attic insulation
Most attics we open here hold a few settled inches from decades back, so we measure what's there and bring it to an even depth, edges included.
Blown-in insulation
Blown-in insulation, loose fill sent through a hose, reaches the tight corners under low-pitched roofs, and it's usually the most practical way to top up an older attic.
Home insulation
For a house that's drafty in winter and hot by afternoon, we look at the attic, walls and floor together and write down which to tackle first.
Insulation removal
When old attic insulation is soaked, flattened or full of droppings, we vacuum it out first, because new material laid over a dirty layer keeps the problem.
Crawl space insulation
Raised-floor houses here often have bare framing underneath, which is why the kitchen floor feels cold on gray mornings, so we insulate between those floor joists.
Wall insulation
Older stucco walls are often empty or thinly filled, and we can blow insulation into the cavities through small holes instead of tearing the walls open.
Air sealing services
We close the gaps around pipes, wires, can lights and the attic hatch, so the drafts moving through an older house stop before any insulation goes on.
Basement insulation
Basements are uncommon in Hawthorne, but where a house or building has one, we insulate its walls and rim so the space below stops pulling heat.
Closed-cell foam insulation
Closed-cell foam is dense enough to block moisture as well as heat, so it suits damp spots and the garage ceiling under a converted bedroom.
Open-cell foam insulation
Softer open-cell foam fills odd rooflines and wall bays, and it also quiets some of the freeway and jet noise that reaches houses across Hawthorne.
Commercial insulation
For property managers with shops, offices or small industrial buildings on Hawthorne's commercial streets, we look at the roof and walls and write up the work in order.
Crawl space vapor barrier
A plastic sheet over the bare dirt under a raised floor keeps ground moisture off the framing, and we deal with any standing water before it goes down.
Vapor barrier installation
Where moisture moves from a bathroom, a kitchen or damp ground into a wall or ceiling, we put the barrier on the side that keeps the framing dry.
Attic air sealing
Before new insulation goes up, we seal the wall tops, can lights and hatch in the attic, so hot attic air stops leaking into the rooms below.
Retrofit insulation
Many homes here were added onto over the years, and a retrofit insulates the parts that got missed without gutting the finished rooms you live in.
Get a free written insulation estimate for your Hawthorne home
Send the form and we'll reply within one business day to set a time. I come out myself, measure and write the estimate at your home, free and with no pressure to book.
(424) 528-1317- Based in
- Lawndale, CA 90260
- Hours
- Mon–Fri: 7 AM–9 PM, Sat–Sun: 6 AM–9 PM
Working in Hawthorne: permits, licenses and what sets the price
The City of Hawthorne's Department of Building and Safety processes construction permits and plans here, so before work starts we check with that office about your address. When a permit is needed, we take care of the paperwork and the inspection, and the city's plan check, its review of the plans against the building, plumbing, electrical and mechanical codes, becomes part of the schedule. The city's Licensing Department issues business licenses, and we're fully licensed and insured, so it's fair to ask any contractor you're weighing about both.
What moves the price is mostly the attic itself: its size, how low and tight it is, how much old insulation has to come out, how many gaps need sealing and whether foam or loose fill is the right call. The schedule turns on those same things, plus any permit and anything that has to be fixed first, like a damp spot, and your written estimate lays it all out step by step. On the narrow residential streets here we plan where the truck and hose go so we're not boxing in your neighbors, and we do the same work in Carson and the cities around it.
Why Hawthorne houses run hot and drafty
Most of the heat comes in from the top. On many older houses here the attic holds a thin, settled layer, the gaps around can lights, pipes and the hatch were never sealed, and sometimes the eave vents got buried under the last top-up, so the attic can't breathe and moisture shows up in the framing. We seal first, keep the vents clear with baffles, short chutes that hold insulation back from the eaves, and then bring the insulation to an even depth, paying the most attention to the edges, where it's usually thinnest.
Raised floors are the other half. Houses built over a crawl space often have bare framing underneath, so the floors feel cold, and if the dirt down there is damp we deal with the water before any barrier or insulation goes in.
How a Hawthorne insulation job runs, start to finish
Here's how it goes from your first call to the final walk-through, with every step written down before we touch your attic, walls or crawl space.
Call us or send the form
You call (424) 528-1317 or send the form, and we set up a visit at a time that works for you. Someone should be home so I can get into the attic or crawl space.
I measure and write it up
I come out myself, check how many inches are already up there, and note anything that has to be dealt with first, like old wiring, damp spots or insulation that looks like vermiculite. You get a written estimate listing each step in order, so you see exactly what you're paying for before anything starts.
We handle permits and install
If you go ahead, we sort out any permit with the city's Building and Safety office, which is open Monday through Thursday and closed Fridays, so that paperwork moves on those days. Our crew does the install with me on site, sealing gaps before any insulation goes in.
Walk through the finished job
When we're done, I walk through the work with you and show you what changed. If an inspection is part of the job, we take care of it.
Questions about insulation in Hawthorne, CA
How much does it cost to insulate an attic in Hawthorne?
The cost comes down to your attic: how big and tight it is, how much old insulation has to come out, and how many gaps need sealing first. Sealing and topping up with loose fill usually costs less than spray foam, and an attic with soaked or dirty insulation costs more because it has to be cleared before anything new goes in. I list every step on the written estimate so you can see where the money goes.
Should I use spray foam or blown-in insulation in my Hawthorne attic?
For most attics here, sealing the gaps and then topping up with blown-in insulation is the better value. Spray foam costs more and seals air while it insulates, so I recommend it when your ductwork runs through the attic and foam on the roof would keep those ducts out of the heat.
How long do we have to stay out of the house after spray foam insulation?
The foam maker sets the re-entry time, meaning how long before you, your kids and your pets can come back inside, and it varies by product, so I put the hours for the foam we're using on your estimate. With blown-in insulation, most families stay home and just keep clear of the work area.
What causes the room over the garage to get so hot in Hawthorne?
Usually the garage ceiling and the outside walls of that room have little or no insulation, and gaps where wires and ducts pass through let garage and roof heat straight in. We seal those gaps and insulate the floor and walls, and closed-cell foam often fits best under that floor.
Can I check a building permit online in Hawthorne?
Yes, the city's Citizen Self Service portal lets you view a permit record and its status, and it's also where people apply for permits and review plan submittals. When your job needs a permit, we file it and you can follow along there.
How do I schedule a building inspection in Hawthorne?
Inspections in Hawthorne are scheduled through the city's Citizen Self Service portal, except for permits issued before July 2022, which have to be booked by calling Building and Safety at (310) 349-2990. The inspector checks the work against the approved plans and codes, and on our jobs we take care of setting that up.
Lawndale, CA
Get your Hawthorne attic looked at
Calling before the next heat wave leaves time to fix anything that has to come first, like a damp spot, without rushing the insulation.




