Insulation Contractor in San Antonio, TX

Insulation cost in San Antonio depends on the area, square footage, material, existing insulation, R-value, access, removal and air sealing. Typical planning ranges are about $1,500 to $7,150 for a 1,500 sq ft attic, with different ranges for walls, crawl spaces and garages. Use our insulation cost calculator for a planning estimate. The written price comes after a free on-site assessment.

We provide attic insulation, spray foam, blown-in fiberglass and cellulose, fiberglass batts and rolls, insulation removal and attic air sealing for San Antonio homes. On vented roofs we also check attic ventilation during the visit. Walls, garage lids and crawl spaces are addressed when those areas are the problem. We do not replace air conditioners.

There is no single best material for every San Antonio home. The right choice depends on the area, what insulation is already there, construction details, the R-value the space can hold, air leakage, access and budget. A vented attic floor is usually blown-in fiberglass or cellulose. Spray foam fits some roof decks and open cavities after an inspection.

Spray foam and blown-in insulation are different systems, not a simple better-or-worse pair. Spray foam is applied to a surface and expands as it cures. Blown-in insulation is loose fiberglass or cellulose spread across an attic floor. The area, roof design, access and how the house is built decide which system belongs in your home.

Yes. Blown-in insulation works well on a vented attic floor because it covers a wide ceiling and gets around blocking that batts often miss. Fiberglass and cellulose are the two common materials. The product coverage chart sets the settled depth for each R-value, and we measure after install so the attic reaches the planned level.

Sometimes. The old layer has to be checked for condition, depth, coverage, moisture and contamination first. Dry, clean, thin fiberglass can often stay and be topped up to the target R-value. Wet, soiled, pest-damaged or heavily compressed fill should come out before new insulation goes in so the finished attic performs as planned.

Yes, when the material should not stay. Damaged, contaminated, wet, pest-damaged or badly deteriorated insulation is removed before the new layer is installed. Suspected vermiculite stays in place until it is tested. Knob-and-tube wiring stops the job until a qualified electrician addresses the wiring and clears the work area.

A thin or uneven attic lets heat into the rooms below, so adding insulation and sealing air leaks can help. A hot upstairs can also come from ducts, windows, sun exposure on that side of the house and how the AC distributes air. The free on-site assessment shows which of those factors are involved in your home.

Improving a weak attic can cut unwanted heat gain and may reduce cooling demand in San Antonio summers. ENERGY STAR notes that sealing and adding insulation can provide up to about 10% savings on annual energy bills. Results vary with the house, HVAC system, ducts and air leakage. That is not a promise of a specific CPS Energy bill cut.

Insulation slows heat transfer through materials. Air sealing reduces air moving through gaps and penetrations. A thick attic can still leak at the hatch, top plates, pipes, wires, ducts and recessed lights. We usually check both on the same visit so the new insulation is not undermined by air leaks around the edges.

Install time depends on the size of the area, access, the material, whether old insulation comes out, how much air sealing is included and the rest of the scope. Many attic top-ups finish in a day once materials are on site. The written quote names the expected schedule after we see the house in person.

Yes, on a vented attic. Insulation should not block soffit, ridge or gable paths that are supposed to stay open. Air-permeable insulation needs an eave baffle so it does not plug the soffit intake. The roof design decides which openings your house uses, and we check those paths before and after the insulation is installed.

No. San Antonio Insulation Pros focuses on insulation and air sealing, not HVAC equipment replacement. If a duct has pulled loose or the equipment looks like it is failing during our inspection, we note that for you so an HVAC contractor can take the next step on the mechanical side.