Attic air sealing in Lancaster CA - a house that stops leaking into the attic
Hot upstairs, drafty rooms, a climbing power bill? We close the big gaps into your attic so the air you pay for stays inside.
Does my Lancaster house need attic air sealing?
Attic air sealing in Lancaster closes the gaps between your attic and the rooms below, around pipes, wires, vents, flues and the tops of walls, so the air you heat and cool stays in the house. It cuts energy use, lowers your bills and helps keep moisture problems out of the attic.
Most calls start with a room over the garage that won't cool down in summer, cold floors in winter or a power bill that seems high for the size of the house. We're based in Lancaster and work in Palmdale, Quartz Hill, Rosamond and many of the cities around them, and in a lot of those attics the trouble isn't how much insulation is up there but how much air is moving through the gaps under it. The price moves with how many big openings your attic has, how easy it is to crawl around in and whether old insulation or a repair has to be dealt with first, and that same cleanup is usually what sets the schedule. I look at the attic myself and write up an estimate that notes anything that has to be fixed first.
- Fully licensed and insured.
- Free in-person estimates.
- We reply within 1 business day.
What attic air sealing looks like
How we handle attic air sealing
First I check what's already up there, because sealing or insulating over material that got soaked by a roof leak or is full of droppings just buries the problem, so that comes out first. Then our crew goes after the big leaks, the open tops of interior walls, the dropped soffits that box down over kitchen cabinets and tubs, and the openings around flues and plumbing pipes, instead of chasing every hairline crack. Hot furnace and water heater flues get metal and heat-safe sealant, because regular foam doesn't belong against a hot pipe, and we keep insulation back from them. Last, the attic hatch gets weatherstripped, since it's a big hole in your ceiling that usually goes unsealed.
Sealing is often the first half of a bigger job. Once the gaps are closed, an older house that's light on insulation is a good fit for retrofit insulation, adding to what the house already has, and the new material works better because no draft is moving through it. If your ductwork runs through the attic, I'll usually point you toward spray foam insulation, which costs more but seals and insulates in one pass. For most houses without ducts up there, sealing the gaps and topping up blown-in loose fill does the job for less.
Why Lancaster homeowners call Balanced Lancaster Insulation Company for attic air sealing
I do your estimate myself
I look at your attic myself before anything gets written up, so the estimate comes from someone who has actually seen your flues, soffits and hatch. That way you know what you're paying for before we start.
In business since 2013
I spent my early years with a big commercial insulation company, where every stage got checked before anything was closed in, and started this business in 2013 to work on homes the same way. That habit is why the fixes and the sealing get done before anything is covered up.
Fully licensed and insured
Your attic sits right over your ceilings and wiring, so you want the people up there licensed and covered if something goes wrong. Ask about either one when I come out.
Contract changes put in writing
California requires any change to a home improvement contract to be in writing, easy to read and to tell you about your right to cancel, and owners 65 and older get five business days to cancel instead of three. We write changes up that way, so nothing about the job shifts without you seeing it on paper.
On an attic, the order of the work matters most. Satisfaction guaranteed on every job. Call (661) 952-4049 or book an attic check, and let me know about any roof leaks, how your attic is vented and which gas appliances you have.
Book an attic check and a written air sealing estimate
Send the form and we'll reply within one business day to set up a time. I'll come out for a free on-site look at your attic, and there's no obligation to go ahead.
- Fully licensed and insured.
- Free in-person estimates.
- We reply within 1 business day.
What happens after you call about sealing your attic?
Call or send a message
Call (661) 952-4049 or send the form, and we'll get back to you to set a time for me to come out.
I look at your attic
I go up, check what's already there and note anything that has to be fixed before we seal. You get a written estimate that spells out what we'll seal, what comes first and what it costs.
Our crew seals the attic
My longtime crew lead runs the job with our installers, and we seal before we insulate so nothing gets buried that should have been fixed. I check in while the work is going on.
We walk the finished attic
When the sealing is done, I walk the attic with you so you can see what got closed up. If insulation is going in next, that's your chance to see the sealing before it's covered.
Attic air sealing questions from Lancaster homeowners
How much does attic air sealing cost in Lancaster, CA?
The cost comes down to how many big openings your attic has, how easy it is to move around in and whether anything has to be repaired or removed before we seal. A roomy attic over a simple ranch house costs less than a tight one with dropped soffits, several flues and old insulation that has to come out first. I give you a written figure after I've been up there and seen it.
Which parts of my attic leak the most?
The biggest leaks are usually where interior walls meet the attic floor, over dropped soffits and behind or under kneewalls, the short walls in rooms tucked under the roofline. Plugging those large holes saves far more than sealing every small gap.
What is the best way to air seal an attic before adding insulation?
Seal every opening in the attic floor first, then insulate. Federal energy guidance for existing vented attics calls for sealant, one-part spray foam or rigid blocking depending on the size of the hole. Once new insulation is down those gaps are buried and hard to reach, so we treat sealing as the first part of the same project.
Is attic air sealing safe with a gas furnace or water heater?
Yes, as long as your gas appliances vent properly, because a tighter house can let carbon monoxide build up when they don't. The standard advice is to have a heating and cooling technician check the furnace, water heater and dryer for proper venting, and I'll point it out if something looks off when I'm up there.
How long does it take to air seal an attic, and can I do it myself?
If your attic is easy to get into and move around in, you can, and ENERGY STAR's do-it-yourself guide says its projects can usually be done in a day or two. Low, cramped attics and openings around hot flues are where hiring it out usually makes sense, since they take the right materials and a lot of crawling.
What should I fix in my attic before air sealing?
Fix anything that would get sealed in with the problem, such as wet insulation from a roof leak, moldy rafters or a dryer vent that blows into the attic instead of outside. Older homes with knob and tube wiring, the kind used before about 1930, need that dealt with at the start too, because it can be a fire hazard where it touches insulation.
Insulation work in nearby cities
Work that goes with attic air sealing
Retrofit insulation
If your house is older and thin on insulation, this is the natural next step once the leaks underneath are closed.
Spray foam insulation
When your ductwork runs through the attic, foam can seal and insulate in one go, even though it costs more than loose fill.