Insulation contractor in San Marino, CA - attics sealed before new insulation goes in
A&S Alhambra Spray Foam Insulation is an insulation contractor based in Alhambra that insulates and air seals attics, crawl spaces and walls in San Marino homes. We seal the leaks first so new insulation does its job.
San Marino homes as we find them
San Marino is a city of quiet residential streets, with single-family homes on generous lots and very little commercial building, set between Alhambra, where we're based, and Pasadena. Many of the houses we're called to are older and larger than most in the area, often with a second story, a room over the garage and big trees shading the roof.
Next door in South Pasadena we see houses of much the same age, and the work goes the same way in both cities. A large older attic usually holds layers of past work, such as old insulation, can lights and patched openings, and all of it has to be sorted out before anything new goes down.
What to know before insulation work starts in San Marino
The city's Planning and Building Department decides whether an insulation job in San Marino needs a permit, so I check with them before we set a start date. When one is needed, we pull it and keep you informed through the inspections, and the schedule then follows the city's review. We're licensed and insured, and you can check two things about any contractor you're considering, a current license with the California Contractors State License Board and a San Marino business license, which a contractor has to renew every year before working here. The city's Business License Department answers questions about those licenses at (626) 300-0700.
The price of an attic job here turns mostly on the attic itself, how big it is, how easy it is to reach, and whether the old insulation is clean enough to stay or has to come out first. The number of gaps to seal around lights, pipes and the hatch adds to it, and so does choosing foam over loose fill. The schedule turns on the same things, plus any roof leak that should be fixed before we start, and the estimate I write after seeing your house gives you the figure for your own job. We do this same work for homeowners in Pasadena and San Gabriel, so San Marino sits right in the middle of our usual drive.
Why San Marino houses call for careful attic work
Older houses here often have a few inches of insulation that has settled over the years, laid around can lights, pipes and an attic hatch that were never sealed, so air slips through the gaps and the rooms upstairs stay uncomfortable. Laying more on top doesn't fix that, which is why we do air sealing first, closing those gaps, and then bring the insulation up evenly, making sure the edges over the outside walls get as much as the middle.
Where the ductwork runs through the attic, or the house sits over a crawl space and the complaint is cold floors, foam earns its higher cost because it seals air while it insulates. Closed-cell foam insulation, a dense foam that also blocks moisture, suits those spots well. Otherwise, sealing the gaps and topping up blown-in insulation, loose fill blown through a hose, is usually the better value.
Get a free on-site insulation estimate for your San Marino home
Send the form and we'll reply within one business day to set a time for me to come out to your San Marino home. I'll look over the attic, crawl space or walls and explain what I'd recommend and why. The estimate is free and carries no obligation.
(626) 525-0036How an insulation job in San Marino goes, step by step
Call or send a request
Call (626) 525-0036 or use the form on this page, and we'll get back to you to set a time to visit. It helps to mention the rooms that bother you, such as a hot bedroom upstairs or cold floors.
I look over your house
I come out myself and check the attic, crawl space or walls for anything that has to be handled first, such as a roof leak or old insulation that should come out. Please make sure the attic hatch is easy to reach.
We go over my recommendation
I explain what I'd do, in what order and why, and put it in a written estimate. If a repair or a test should come first, I'll tell you that rather than sell you insulation that won't suit the house.
We set the date together
Once you're ready, we schedule the work, and if the job needs a permit, the start date follows the city's review. I'll also tell you whether you'll need to be out of the house and when you can come back in, which matters most with foam.
We install, then walk through
Our crew seals the gaps first and then puts down the insulation, with me on the job alongside them. Before we leave, I walk through the finished work with you.
Insulation work up close
San Marino insulation questions
What building code applies to insulation work in San Marino?
San Marino follows the California Building Code, which the city has adopted along with some local amendments and deletions of its own. The Planning and Building Department keeps the city's Building Code available for the public to look over if you want to read it yourself.
How do I know if my San Marino insulation job needs a licensed contractor?
Under state rules, a contractor needs a license when the project requires a building permit, uses employee labor, or totals $1,000 or more across one or more contracts. A larger job can't be split into smaller contracts to get under that amount, and the state licensing board explains the narrow exemption for very small work.
Can I insulate my own attic in San Marino without a license?
You can if it's the home you live in and you meet the state's conditions for doing the work yourself as an owner-builder. Those conditions cover how long you've lived there before the work is finished and how often you've used the exemption, and the state licensing board's owner-builder page sets them out.
How much does attic insulation cost in San Marino?
The biggest cost factor in a San Marino attic is usually what's already up there, because insulation that's soaked, flattened or full of droppings has to be removed before new material goes in, and that's a separate piece of work. A big older attic also takes more material and more sealing than a small one. I'll give you the figure for your own house once I've seen the attic.
Do I have to leave my San Marino home during spray foam insulation?
Usually yes for spray foam, because it has a re-entry time, a wait before people and pets can come back inside. With blown-in insulation you can usually stay home, though it's best to keep kids and pets away from the hatch while we work, and I'll tell you which applies before we book the day.
What causes moisture in an attic after new insulation goes in?
Most often it's insulation piled over the vents at the eaves, which stops the attic from breathing and lets moisture collect in the framing. We keep those vents clear when we install, and if old insulation was laid over a leak, we ask you to have the leak fixed first so the problem isn't simply covered up.
Have us look at your San Marino attic
If you're planning a reroof or remodel, call (626) 525-0036 or use the form before it starts, because an attic is easiest to seal and insulate while the work is already open.