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Blown-In Attic Insulation in Houston

Fiberglass blown in level, filling the gaps batts can't reach. Free assessment.

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Attic before: old, patchy pink insulation and bare raftersSame attic after: reflective insulation on the roofline and fresh white blow-in insulationBeforeAfter

A real Houston attic, before and after. More photos →

  • We look at what's in your attic, measure it, and photograph problem areas.
  • Accurate measurements. Honest pricing.
  • No obligation — guaranteed in writing.
12months

Estimate guaranteed in writing
for a full calendar year.

Why blow-in fiberglass

  • Complete coverage: blow-in fill reaches tight and irregular spaces with no cutting or fitting — no gaps, no cold spots.
  • Holds its loft: fiberglass doesn't soak up moisture the way paper-based cellulose does, so it keeps its shape in Houston's humidity.
  • Healthier air: formaldehyde-free, with no risk of mildew or corrosion.
  • Quieter home: meaningful sound-transmission control comes with the thermal upgrade.

How a blow-in install actually works

A hose runs from a machine on the truck, up through the attic access, and into your attic. The crew walks the joists and feeds material through the hose by hand, filling evenly and checking depth as they go rather than eyeballing it once at the end.

That's the advantage over rolled batts. Batts are cut sheets — trimmed and pieced around every pipe, wire, brace, and vent chute. A Houston attic full of recessed lights, HVAC ducting, and truss framing rarely offers a clean rectangle to fill. Blow-in fills the whole plane regardless of what's in the way.

Fiberglass vs cellulose — the honest comparison

Two materials dominate blow-in work: fiberglass and cellulose, which is recycled paper treated with a fire retardant. Both fill obstructed spaces well when installed correctly. Where they differ is what happens after install day.

Cellulose is paper, and paper absorbs moisture. Houston carries humidity most of the year, and wet cellulose compacts, loses loft, and can hold dampness against the roof deck. Fiberglass doesn't absorb water, so it holds its shape and doesn't give mold anything to work with. Cellulose is also denser and settles further over time, so the depth you start with isn't the depth you keep. Given Houston's climate, we install fiberglass attic insulation on every job, not cellulose — it's the material that keeps performing after the truck leaves.

How to check your own attic first

You don't need us up there to get a sense of where you stand. Grab a flashlight and look across the joists.

  • Exposed framing: if you can see the tops of the wood joists over any real stretch, insulation is running low. Most Houston attics we open are well below where they should be.
  • Flat, matted patches instead of a loose, even plane — compressed insulation has lost the trapped air that actually resists heat.
  • Uneven depth, often deeper near the access hatch and thin everywhere else, a sign it was never leveled when it went in.
  • Discoloration or daylight: old cellulose gone gray and dusty, fiberglass matted flat, or light visible through the roof boards or soffit — all past useful life or a real gap.
  • Tunnels or flattened trails, usually rodent activity, worth flagging early.

Stand a ruler on end at a few spots for a rough read on depth. If any of this sounds like your attic, the free assessment gives you real numbers — we measure it, photograph it, and show you exactly what's there.

When old insulation has to come out first

Not every job is a straightforward top-up. Attic insulation removal comes first when:

  • Rodents have been living in it — droppings, urine, nesting material, and the odor don't go away once fresh insulation goes on top.
  • Water has gotten in, from a roof leak, a plumbing failure, or long-term humidity that's left insulation damp, moldy, or matted solid.
  • It's settled so far and so unevenly that topping it up won't fix the coverage.
  • Mixed old layers of batts, loose fill, and debris make the attic impossible to assess honestly.

Removal means vacuuming the old material out, containing dust as it comes down, and making sure the space is clean and dry before anything new goes in. Skipping it when it's needed just buries the problem under a fresh layer. More on attic insulation removal.

Install day

A typical install runs about one day. We tarp the access path, protect flooring along the way, and seal off registers and fixtures near the work area so dust stays where it belongs. The hose runs from the truck to the attic, and the crew works the material level and even, checking depth as they go rather than eyeballing it at the end.

When it's done, the workspace gets vacuumed out and the crew leaves with the debris, not you. We photograph the attic before and after on every job, so you have a record of what changed. Browse before & after photos from Houston attics we've done.

Blown-in insulation vs radiant barrier — different jobs

Insulation resists conduction and convection: the slow, steady heat that moves through material and air. It cannot reflect the radiant heat pouring straight off a sun-baked Houston roof deck — that's a different mechanism, and it needs a different fix. A Sol-R-Shield reflective insulation layer handles the radiant side. Most Houston attics we see benefit from both, which is why we call the combination our Total Attic Solution. Fixing only one side of the problem leaves the other one on the table.

Your quote holds for 12 months

Once we've measured your attic and written up a quote, that number doesn't move. A quote from July is still good in December — no re-inspection, no "prices went up" conversation. Insulation usually isn't an emergency purchase, so we built the quote to survive whatever timeline you're actually working with.

Common questions

How do I know if my Houston attic needs more blown-in insulation?

Look across the joists with a flashlight. If you can see the tops of the wood framing over any real stretch, insulation is running low — most Houston attics we open are well below where they should be. Flat patches, uneven depth, and daylight through the roof boards are all signs. The free assessment gives you exact numbers instead of a guess.

Is fiberglass or cellulose better for blown-in insulation?

We install fiberglass. It doesn't absorb moisture the way cellulose does, so it holds its shape in Houston's humidity.

How much does blown-in insulation cost in Houston?

It depends on your attic's size, how much insulation is already up there, and whether old material needs removal first. We measure all of that at the free assessment and hand you a written quote on the spot — locked for a full 12 months.

Does old insulation need to be removed before new insulation goes in?

Not always. Dry, clean, reasonably even insulation can usually just be topped up. Removal comes first when there's rodent contamination, water or mold damage, or settling so heavy it won't fix with a top-up. We'll tell you plainly at the assessment if your attic needs it.

How long does a blown-in insulation installation take?

About one day for a typical Houston home. We tarp the access path, seal off nearby registers and fixtures, run the hose from the truck to the attic, and vacuum out the workspace when we're done.

Do I need blown-in insulation, radiant barrier, or both?

They solve different problems. Insulation slows conduction and convection; it can't stop radiant heat off a hot roof deck, which takes a reflective layer like Sol-R-Shield. Most Houston homes benefit from both — our Total Attic Solution. The free assessment tells you where you stand on each.

How deep is your insulation? Most owners guess wrong.

Find out in an hour, free — with photos of your own attic and a written quote locked for a full 12 months.

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