CertainTeed Attic Insulation Nationwide

CertainTeed Attic Insulation: The Boerne Owner’s Guide

Most CertainTeed attic insulation replacements in Boerne run $2.80 to $4.50 per square foot installed, depending on whether we’re topping existing material or stripping down to the ceiling deck first. We stock CertainTeed Optima, TrueComfort, and InsulSafe blown-in fiberglass on our trucks, and we can usually get a crew to your home same-day if you call before noon. Homeowners typically figure out something’s wrong when their upstairs bedrooms won’t cool below 78 degrees in July, or when they find compressed, discolored batts in the attic that have settled well below their original R-value.

Call (830) 529-7780

Which CertainTeed Models This Applies To

CertainTeed’s attic insulation line breaks into three families that show up in Boerne homes, and matching the right product to what’s already in your attic matters for both performance and warranty coverage.

Optima is the loose-fill fiberglass blown in at R-38 to R-60 depths. You’ll find the product code on a paper tag stapled to a roof truss or joist near the attic hatch. Look for “OPT” followed by a batch number. The critical spec is settled density: Optima is designed to settle to 0.5 to 0.6 pounds per cubic foot. If your existing material has compressed to half its labeled thickness or shows shiny spots from duct condensation, the density is shot and the R-value has dropped proportionally.

TrueComfort is the blown-in wool-blend system, less common in Texas but present in some 2018-2022 builds near Balcones Creek. The bags are gray, not yellow, and the material holds more moisture than fiberglass. In Boerne’s humidity swings, TrueComfort can mat down near soffit vents where humid air enters. We don’t recommend topping it with fiberglass; the two materials don’t interlock properly and you’ll get thermal drift at the boundary.

InsulSafe SP is the spray-applied fiberglass used in commercial and some high-end residential cathedral ceilings. If your attic has this, there’s a spec sheet taped to the mechanical room door or inside the electrical panel cover. The OEM part number matters because InsulSafe SP is not interchangeable with standard loose-fill; it requires a specific adhesive ratio and set time.

We are an independent service provider, not affiliated with CertainTeed. We source their products through authorized distribution, but we also install Owens Corning, Johns Manville, Knauf, and Rockwool when those materials better match the job. For CertainTeed specifically, we typically specify OEM material for warranty-registered installations and quality aftermarket equivalents for older systems where the warranty has already expired.

Signs Your CertainTeed Attic Insulation Is Failing

• Uneven temperature between rooms. When insulation settles or gets disturbed by rodent activity, you get thermal bypasses. The master bedroom stays hot while the guest room two ducts over is fine. We see this pattern most often in Boerne homes built 2005-2015 where Optima was blown to minimum code depth and never checked again.
• Ice damming or heavy frost on roof nails in winter. Warm, moist air hits the cold roof deck and condenses. The nails frost over, then melt and stain the ceiling below. This means your insulation has gaps or your air sealing failed first, which is almost always the actual problem.
• Discolored or compressed batts. Fiberglass that looks gray or brown has filtered dirty air moving through it. Compression above 10 percent of original thickness kills the loft that traps air. Once a batt is walked on or used as a storage platform, it doesn’t recover.
• Energy bills climbing year-over-year with no rate increase. We pulled the utility history on a home near River Road Park last March. The homeowner’s kWh per cooling degree-day had risen 23 percent over four years. The Optima in the attic had settled from 14 inches to 8 inches. The HVAC was running longer to compensate.
• Visible moisture or mold on the roof deck underside. This is past the point of topping off. The insulation is wet, the vapor drive is wrong, and someone needs to figure out whether the bathroom vent terminates in the attic before any new material goes in.

Replacement Cost & What’s Included

The spread depends on three things: how much old material has to come out, how many can lights and top plates need sealing first, and whether we can get the truck close to the house or have to run hose through a second-story window. We give you a written price before any work starts. That’s Haven Standard Clause 1. No exceptions.

Every job includes our 365-Day Done Right Promise. If the blower-door number doesn’t move or you find a missed penetration, we come back and make it right. The warranty is in writing, delivered before the crew starts, not after they leave.

DIY or Call Us?

Here’s what you can safely check yourself. Look in the attic with a flashlight. Measure the insulation depth at three spots with a yardstick. Check the product tag for the CertainTeed series and installed date. Take photos of any discolored or compressed areas. That’s it.

Here’s where DIY goes wrong. Blown-in fiberglass requires a machine that breaks the bales without shredding the fibers. Renting a big-box blower and using the wrong rotor speed creates dust, uneven density, and material waste. More importantly, blowing insulation over an unsealed attic floor is the most common mistake we correct in Boerne. The new insulation hides the air leaks but doesn’t stop them. Your conditioned air keeps escaping, and now you can’t see the problem.

We seal the envelope first. Then fill it. Every time. If you want a free second opinion on another contractor’s estimate, bring it by. We’ll read it with you and tell you what we see. Call (830) 529-7780.

FAQs