Rockwool Spray Foam Insulation Nationwide

Rockwool Spray Foam Insulation in Boerne: What to Know First

We provide independent Rockwool spray foam insulation in Boerne for homeowners who need their building envelope sealed and insulated correctly the first time. Most Rockwool spray foam jobs we complete in Kendall County run same-day to next-day, with a written price delivered before any work starts. We are not affiliated with or authorized by Rockwool - we are an independent Rockwool service provider - which means we source parts based on what actually fixes your assembly, not what moves a manufacturer program. If you are seeing sagging Comfortbatt in a cathedral ceiling, missing cavity fill in a rim joist, or a Comfortboard layer that has pulled away from spray foam in a hybrid assembly, call us at (830) 529-7780. We will read the situation, name the price in writing, and show you blower-door numbers that prove the fix worked.

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How Rockwool Products Fail - and How We Fix Them

• Comfortbatt sagging in vented cathedral ceilings. The 3.5-inch and 5.5-inch batts rely on friction fit, but in Boerne’s Hill Country heat cycles the wood rafters shrink and swell enough to break contact. We see this in homes near the Cibolo Nature Center where builders used Comfortbatt R-30 between 2x10s with inadequate vent baffles. Our fix: remove the compromised batts, install proper vent chutes to maintain the 1-inch air gap, then follow with open-cell spray foam to lock the assembly in place and eliminate wind-washing. The blower-door test tells us whether the cavity was ever truly sealed to begin with.
• Comfortboard 80 delamination from spray foam in hybrid assemblies. This rigid board is often layered behind closed-cell spray foam in exterior wall retrofits, but the factory-facing treatment can act as a bond-breaker if the installer did not scuff or prime. We find this in 2015-2019 Boerne builds where contractors rushed the assembly. Our fix: strip to substrate, mechanically fasten the Comfortboard with long screws and washers, then apply closed-cell foam in lifts thin enough to cure without exotherm stress. We document the pull-test adhesion before we leave.
• Afb evo sagging in steel stud cavities before spray foam backup. The lightweight Afb evo is specified for commercial interior walls, but in Boerne’s few mixed-use conversions near Main Street we have seen it compress under its own weight when the cavity below was left open for eventual spray foam that never came. Our fix: support the Afb evo with temporary netting, inject open-cell spray foam from the bottom up in 2-inch passes, then remove the netting once the foam structure carries the load.
• Rockwool cavity fill incomplete behind reduced-depth spray foam. Some Boerne installers have sprayed 2 inches of closed-cell and called the job done, leaving the back half of a 2×6 cavity empty. The Rockwool batt that was supposed to fill the remainder was never installed, or was cut short. Our fix: probe every cavity with a borescope, measure the actual foam depth, then complete the assembly with the correct complementary insulation and a fresh pass of foam at the correct thickness for the R-value target.
• Toprock DD compressing under foot traffic in attic floors. This high-density board is meant for flat roof assemblies, but we have found it misapplied as attic floor decking in a handful of Boerne homes where the homeowner planned later spray foam and needed a walkable surface. The board crushes, the vapor profile changes, and the eventual spray foam bonds to a compromised substrate. Our fix: remove the crushed Toprock, install proper attic flooring over raised joist cleats, then spray the roof deck with open-cell foam so the attic becomes conditioned space and the floor question disappears entirely.

Our Rockwool Spray Foam Insulation Process

1. 1
   Call and scope. A live person answers. We ask what Rockwool product you have, where it is, and what you are seeing. We schedule a site visit with a written price to follow - no work starts without it.
2. 2
   Diagnostic visit with blower-door baseline. We run a pressurization test, a measurement that shows in one number how much air your building envelope is losing. We photograph the assembly, probe cavities, and identify the failure mode.
3. 3
   Written price and parts decision. We specify OEM Rockwool replacement where it matters for density and fire rating, or quality aftermarket where the specification is generic. You get the scope, the price, and the warranty in writing before anyone lifts a tool - Haven Standard Clause 1.
4. 4
   Air seal first, then insulate. Seal the envelope first. Then fill it. We complete all top-plate sealing, can-light boxing, and penetration work before spray foam touches the cavity. The blower-door mid-test confirms the seal.
5. 5
   Spray foam application and verification. We apply open-cell or closed-cell foam in manufacturer-specified lifts, monitor substrate temperature and ambient humidity, and pull a sample cube for density check when the job specifies it.
6. 6
   Final blower-door test and documentation. We hand you a printed pressure-differential report in pascals, before and after, plus a Documented Photo Record of every cavity. The 365-Day Done Right Promise is active from that moment.

What Rockwool Spray Foam Insulation Costs in Boerne

Most Rockwool spray foam insulation jobs in Boerne fall in these ranges:

• Rim joist repair with Rockwool removal and closed-cell replacement: $1,800-$2,800
• Cathedral ceiling Comfortbatt removal + open-cell spray foam: $3,200-$5,500
• Hybrid wall assembly (Comfortboard + closed-cell foam): $4,500-$7,200
• Full attic floor removal with roof-deck spray foam conversion: $6,800-$11,000

What moves the price: accessibility (steep pitches and tight scuttles add labor), the extent of failed Rockwool removal, whether the assembly needs structural repair before foam can bond, and whether we are matching an existing R-value or improving it. We also service Reflectix assemblies and can quote hybrid solutions if your project involves multiple materials. Every estimate is free, written, and delivered before any work starts. Call (830) 529-7780 to schedule.

Why Boerne Homeowners Call Topside Attic Insulation Boerne for Rockwool Work

We have been sealing and insulating homes under The Haven Standard since 2016, and we have learned that Rockwool failures in Boerne are rarely about the product itself. They are about assembly sequence: insulation installed before air sealing, foam sprayed over a dirty substrate, or a hybrid detail that was never tested with a blower door. Wes Okafor runs every job with before-and-after pressurization numbers so you can verify the result in pascals, not promises. Our technicians are background-checked and uniformed, and a live person answers calls 24/7. We carry Owens Corning, Johns Manville, Knauf, Rockwool, CertainTeed, Icynene, Demilec, and GreenFiber - no proprietary lock-in means we specify what fixes your assembly, not what moves our inventory. The 365-Day Done Right Promise applies to every completed job, backed by a written scope and warranty you receive before the crew starts.

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