CertainTeed Radiant Barrier Installation Nationwide

CertainTeed Radiant Barrier Installation: The Boerne Owner’s Guide

Most CertainTeed radiant barrier installations in Boerne run between $1,800 and $3,400 for a typical 2,000-2,800 square foot attic, including material, labor, and the air-sealing work that should happen first. We stock CertainTeed-compatible radiant barrier rolls and tape on every truck, and most jobs can be scheduled within 48 hours. Homeowners usually figure out something’s wrong when their upstairs bedrooms won’t cool below 78 degrees even after the AC runs all afternoon, or when their July electric bill jumps $80-$120 year-over-year with no rate change.

Call (830) 529-7780

Which CertainTeed Models This Applies To

CertainTeed manufactures radiant barrier products under the MemBrain and SmartBatt lines, plus the standalone CertainTeed Radiant Barrier foil rolls sold through distribution. The critical compatibility gotcha in Boerne’s Hill Country market is this: CertainTeed’s foil rolls are 48 inches wide, while the Reflectix product we also stock runs 51 inches. That three-inch difference matters if your attic framing is on 24-inch centers with a specific overlap pattern your original installer followed. Check the printed edge tape for the CertainTeed logo and lot number; if the tape’s degraded, measure the roll width and note whether it’s perforated for vapor permeability. CertainTeed’s perforated barrier is rated 0.5 perms, non-perforated is near-zero. We carry both. OEM CertainTeed rolls cost roughly 15% more than our quality aftermarket equivalent, which meets the same ASTM C1313 reflectivity standard and carries the same 10-year material warranty. For most Boerne attics, we recommend the aftermarket foil and put the savings into air sealing the top plates first.

Signs Your CertainTeed Radiant Barrier Installation Is Failing

• Hot ceiling patches in afternoon sun. The radiant barrier’s emissivity coating has oxidized or the foil has pulled loose from the rafters, letting radiant heat transmit directly to the drywall below. In Boerne, this shows up first on west-facing rooms between 4 and 7 p.m.
• Dust accumulation on the foil surface facing down. Dust kills reflectivity. A clean radiant barrier reflects 95% of radiant heat; a dusty one can drop below 70%. We see this in homes near the Cibolo Nature Center where pollen and limestone dust are heavy.
• Tears or gaps at the ridge line. Thermal expansion in a Boerne attic cycles from 40°F winter mornings to 140°F summer afternoons. That movement fatigues the tape bonds at the peak first.
• Condensation on the foil underside in shoulder seasons. This means the vapor permeability is wrong for your assembly. CertainTeed’s non-perforated foil in a vented attic without proper exhaust can trap moisture against the roof deck.
• Insulation batts compressed against the foil. Someone blew cellulose or laid batts over the radiant barrier, eliminating the critical air gap. Radiant barrier only works with a minimum 3/4-inch gap; without it, you’ve got expensive wallpaper.

Replacement Cost & What’s Included

Here’s how pricing breaks down for a typical Boerne home:

What moves the needle: attic square footage, whether we need to remove failed existing barrier first, accessibility (steep pitch or limited hatch size), and how much air sealing the top plates need before the foil goes up. We don’t price over the phone without photos or a site visit, but we do provide a written price before any work starts - that’s Haven Standard Clause 1. The 365-Day Done Right Promise covers installation workmanship; material defects fall to the manufacturer’s warranty.

DIY or Call Us?

There’s no high-tension danger with radiant barrier like there is with garage door springs, but there are two ways DIY goes wrong fast. First, Boerne attics in July are 130-145°F; heat exhaustion is real, and it’s easy to rush the tape detail that determines whether the barrier lasts five years or fifteen. Second, most homeowners skip the air sealing and just staple up foil. We see this constantly in the older ranch homes off Esser Road - beautiful radiant barrier installation, but the stack effect is still pulling 4,000 CFM50 of conditioned air out through the ceiling because the can lights and top plates were never sealed. Seal the envelope first. Then fill it. That’s the Haven Standard, and it’s why we run a blower-door test before we touch insulation. If you want to check your own attic, verify the foil has its air gap, look for tears at the ridge, and photograph any label remnants so we can match the original spec. For the actual install, call (830) 529-7780.

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