Attic Insulation in Houston, TX

What we install

Blown-in insulation: loose-fill fiberglass or cellulose blown to an even depth across the attic floor — the standard way to bring an under-insulated Houston attic up to a proper R-value.

Radiant barrier: a reflective foil installed to the underside of the rafters that reflects the roof's radiant heat back out before it loads up the attic. In this climate it's the highest-impact add.

Topping up existing insulation: adding depth over insulation that's settled or was never deep enough.

Removal: pulling out old, settled, wet, or rodent-contaminated insulation before re-insulating.

Attic access: installing or replacing an attic ladder and access hatch so the space can actually be reached and inspected.

What we don't do: attic ventilation fans or any wiring. Our work stops at insulation, radiant barrier, removal, and the access ladder.

How much insulation does an attic need in Houston?

Houston sits in DOE climate zone 2A, where the recommendation for an attic is roughly R-38 to R-49. R-38 is a solid target; R-49 is where you stop seeing much return for the added material. A lot of older Houston homes are sitting at R-19 or less — often a thin, settled layer that's doing a fraction of its original job.

In depth terms, blown fiberglass runs about R-2.5 per inch and cellulose about R-3.5 per inch, so hitting R-38 means somewhere in the range of 11 to 15 inches of loose fill depending on material. The honest way to know where you stand is to measure what's up there now and add to it — we check the existing depth and R-value before recommending anything, rather than quoting a blanket number.

Radiant barrier for Houston heat

Insulation slows heat that's already in the attic; a radiant barrier stops a big share of it from getting in. Houston's specific problem is radiant heat — the sun bakes the roof, the roof re-radiates that heat down into the attic, and by afternoon the attic is superheated and dumping heat into your ceilings.

A radiant barrier is reflective foil stapled to the underside of the rafters. It reflects that radiant heat back toward the roof instead of letting it soak into the insulation and the ceilings below. Paired with the right insulation depth, it's the most effective attic upgrade for Houston's climate, and it's why 'best attic insulation for Houston heat' isn't one product — it's insulation plus a radiant barrier working together.

Blown-in and radiant barrier — the spray foam alternative

A lot of people come in asking about spray foam and leave choosing something else — because of the cost, the off-gassing questions, or simply not wanting to permanently glue foam to the underside of their roof deck. We're the alternative to that.

We don't install spray foam. What we do — blown-in insulation to a proper R-value, a radiant barrier to handle the radiant heat, and air sealing at the obvious penetrations — gets a Houston attic comfortable and efficient at a meaningfully lower cost, and it stays serviceable: it doesn't bury your roof deck or your penetrations under foam. For most Houston homes it's the better-value path to the same goal, and we'll tell you straight when that's the case.

Removing old or damaged insulation

Sometimes you can add over what's there; sometimes it has to come out first. Insulation that's been soaked by a roof leak, contaminated by rodents, or is old and matted down should be removed rather than buried, because adding fresh insulation on top of a wet or contaminated layer just traps the problem.

We remove and bag out old insulation and re-insulate clean. One honest limit: if there's active mold on the decking or framing, that's a separate, licensed specialty — we remove the insulation and re-insulate, but we don't do mold remediation. And as noted, we don't install attic fans or do any wiring; the work is insulation, radiant barrier, removal, and access.

What attic insulation costs in Houston

In the Houston market, blown-in insulation generally runs about $1.50 to $3.50 per square foot of attic depending on how much R-value you're adding, and a radiant barrier generally runs about $0.50 to $1.50 per square foot. Removal of old or contaminated insulation is priced separately by how much is up there and how accessible it is.

What moves your number: the square footage of the attic, how much insulation depth you're adding, whether a radiant barrier goes in with it, how much removal is needed first, and attic access and clearance — a low, tight attic slows the work down. These are ranges, not quotes. We measure what's up there and price to the R-value you're targeting.