Serving Plymouth, MI & Southeast Michigan Since 2000
Can You Install Spray Foam During a Remodel?
Can You Install Spray Foam Insulation During a Remodel? Yes — Here's How
One of the most common questions from Plymouth, MI homeowners planning a renovation is: can you install spray foam insulation during a remodel? The answer is yes — and a remodel is actually one of the best opportunities to upgrade to spray foam insulation. When walls are opened up during a renovation, Seal Tech's technicians can access cavities that are otherwise impossible to reach, giving your home a permanent air seal and insulation upgrade that will last for decades.
Eric from Seal Tech Insulation explains the process in detail: whether your drywall is fully removed or only partially opened, spray foam insulation can be installed during a remodel with minimal disruption to your project timeline. Learn more from the Energy Star Seal & Insulate program and the City of Plymouth, MI official website.
Video Transcript & Summary — Spray Foam During a Remodel
0:00 - The question: Eric from Seal Tech Insulation addresses the question directly: yes, you can install spray foam insulation during a remodel — and it's one of the smartest upgrades you can make to an existing home.
0:12 - Full drywall removal: When drywall is completely removed during a renovation, Seal Tech technicians have full access to the wall cavity. This is the ideal scenario — spray foam is applied directly to the framing, creating a continuous air seal and insulation layer before new drywall goes up.
0:30 - Partial access — the 2-foot cut-out method: When only partial wall access is available, Seal Tech uses a 2-foot horizontal cut-out strip near the top of the wall. Old insulation is removed through this opening, and spray foam is injected into the cavity before the strip is patched and finished.
0:48 - Why remodeling is the perfect time: A remodel is the ideal window to upgrade insulation because the walls are already open. Adding spray foam at this stage costs a fraction of what it would cost to retrofit later, and it permanently solves air leakage, moisture, and energy loss issues before the walls are closed up again.
How Spray Foam Is Installed During a Remodel: Step by Step
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Assessment & Planning
Seal Tech's technician evaluates which walls and areas are being opened during the remodel. We coordinate with your contractor to schedule spray foam installation at the right point in the project timeline — after framing inspection, before drywall.
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Old Insulation Removal
Existing fiberglass batts or blown-in insulation are removed from the open cavities. This step is critical — spray foam bonds directly to the framing and sheathing, so the cavity must be clean and dry before application.
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Spray Foam Application
Closed cell or open cell spray foam is applied to the wall cavity, rim joists, and any other accessible areas. The foam expands to fill every gap, crack, and penetration, creating a permanent air seal that fiberglass batts can never achieve.
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Cure Time & Inspection
Spray foam cures within minutes and is ready for drywall installation within hours. Seal Tech provides documentation for your building inspector and coordinates with your contractor to keep the project on schedule.
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Drywall & Finish
Once the foam is cured and inspected, your contractor proceeds with drywall installation as normal. The spray foam is now permanently sealed inside the wall, providing decades of air sealing and insulation performance.
Full Removal vs. Partial Access: Which Method Is Right for Your Remodel?
| Scenario | Full Drywall Removal | 2-Foot Cut-Out Strip |
|---|---|---|
| Wall access | Full cavity access | Partial — top of wall only |
| Best for | Full gut renovations, additions | Partial remodels, single-room updates |
| Old insulation removal | Complete removal possible | Removed through cut-out opening |
| Spray foam coverage | 100% of cavity | 95%+ of cavity via injection |
| Disruption to project | Minimal — part of demo phase | Low — patch and finish cut-out strip |
| Cost vs. retrofit | Lowest cost per sq ft | Low cost — far less than full retrofit |
| Recommended foam | Closed cell or open cell | Closed cell (higher R-value per inch) |
Why a Remodel Is the Best Time to Add Spray Foam in Plymouth, MI
Plymouth homeowners who are already investing in a kitchen renovation, bathroom remodel, or addition are in the ideal position to upgrade their insulation at the same time. The walls are already open — the incremental cost of adding spray foam insulation during a remodel is a fraction of what it would cost to retrofit the same walls after drywall is back up. And the payback is immediate: lower energy bills, better comfort, and a home that performs at a higher level for the next 30–50 years.
Seal Tech works directly with Plymouth contractors and homeowners to schedule spray foam installation at the right point in the project. We coordinate with your general contractor, meet all Michigan building code requirements, and provide documentation for your building inspector. For homeowners in Canton, Northville, and Livonia, the same process applies — we serve all of Southeast Michigan.
Plymouth, MI Remodel Note: Plymouth Township and the City of Plymouth have a high concentration of 1950s–1980s ranch homes and colonials that were originally built with minimal wall insulation — often just R-11 fiberglass batts or nothing at all. A remodel is the single best opportunity to correct this permanently. Spray foam installed during a renovation will outperform the original insulation for the life of the home.
Seal Tech Serves All of Southeast Michigan
Seal Tech Insulation installs spray foam insulation during remodels and new construction for homeowners across Southeast Michigan. We serve:
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We install spray foam insulation during remodels and new construction in Plymouth, Canton, Northville, Livonia, and 20+ more cities across Southeast Michigan.
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As seen on America's Home Experts, Seal Tech Insulation is a trusted provider of spray foam insulation, attic insulation, and crawl space solutions throughout Detroit and Southeast Michigan.
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