Retrofit Insulation in Baltimore
Licensed & insured insulation + HVAC contractors
Serving Baltimore City & Baltimore County since 2006
Same-day energy audits — we diagnose first
800+ energy-efficient homes in Baltimore
5.0
Based on Google, Facebook & BBB Reviews
Get Your Estimate
Enter your information below
Reviews
Trusted by Baltimore Homeowners
In Baltimore, retrofit insulation fills gaps in older homes without demolition or major mess. This page explains how retrofit works, when it fits rowhouses and Victorians, and what to expect during install. Most jobs take one to three days depending on wall access and attic size. As a licensed insulation contractor in Baltimore, we help homeowners cut heating bills and stop drafts year-round.
Retrofit Insulation Fills Walls Through Small Holes Without Removing Drywall
If you live in Canton, Hampden, or Federal Hill and feel cold drafts through your walls, retrofit insulation solves the problem without gutting your home. We drill two-inch holes every 16 inches along each wall cavity. Then we blow dense-pack cellulose or foam into the empty space between studs. After filling, we patch the holes and paint them to match your existing finish.
The process keeps your furniture in place and your daily routine normal. Most wall insulation jobs take one to three days depending on how many rooms need treatment. You avoid the cost and mess of removing drywall, repairing plaster, and repainting entire rooms.
Baltimore rowhouses share side walls with neighbors, so those party walls usually stay untouched. We focus on your front and back exterior walls where heat escapes and cold air leaks in. Air sealing happens at the same time to stop drafts around windows, baseboards, and electrical outlets. The result is a warmer home in winter and lower AC bills in summer.
Get Your Estimate
Enter your information below
process
Spray Foam and Dense-Pack Cellulose Work Best for Baltimore Rowhouses
Baltimore rowhouses and older twins have brick exteriors with wall cavities that vary in depth and often hide old wiring or crumbling plaster. Dense-pack cellulose adapts to these irregular spaces better than rigid foam boards. We blow the material at high pressure so it fills around obstacles and resists settling over time. The cellulose also allows moisture to pass through slowly, which prevents trapped condensation inside your walls.
Closed-cell spray foam works best in specific problem areas like basement rim joists and crawlspace walls. This foam expands to seal air leaks and blocks moisture from entering your home. Baltimore summers bring high humidity that can cause mold in basements, especially in older foundations. Closed-cell foam stops that moisture before it becomes a problem, unlike fiberglass batts that absorb water and lose R-value.
We choose the right material based on where you need insulation and what your walls can handle. Wall cavities get dense-pack cellulose for cost and breathability. Basements and crawlspaces get closed-cell spray foam for air and moisture control. Both materials cut your heating and cooling costs year-round while making your home more comfortable.
Attic Retrofits Cut Winter Heating Bills and Summer AC Costs
Homes in Guilford and Roland Park often have attics where insulation settled or thinned out over decades. Adding 10 to 14 inches of blown fiberglass or cellulose on top of what you already have restores the thermal barrier your home needs. Most attic jobs finish in four to six hours depending on square footage and access points.
We blow the new insulation evenly across your attic floor to reach R-38 or R-49 ratings recommended for Maryland. The added thickness stops heat from escaping through your roof in winter and blocks summer heat from radiating down into living spaces. You feel the difference immediately with more stable indoor temperatures and lower energy bills each month.
Maryland offers tax credits and utility rebates for attic insulation upgrades that meet Energy Star ratings. Check BGE programs before starting your project to see what incentives apply to your home. You can also explore Maryland’s Home Energy Rebate Programs for additional federal incentives through the Inflation Reduction Act. We handle the paperwork and submittals so you receive maximum rebates without delays or compliance issues.
insulation
Vapor Barriers Depend on Wall Type and Insulation Material
If you plan to retrofit interior walls or finish your basement, you may wonder whether vapor barriers belong in the project. Dense-pack cellulose and open-cell foam let water vapor pass through at a controlled rate, so moisture does not get trapped inside wall cavities. Closed-cell foam acts as its own vapor barrier because it blocks air and moisture completely, which means you skip the plastic sheet step.
Baltimore sits in Climate Zone 4A where building code requires vapor retarders on the warm side of insulation in heated spaces. Not every retrofit scenario demands this layer, especially when using breathable materials like cellulose. We assess your wall assembly and recommend the right approach based on what currently exists behind your drywall or plaster.
Adding the wrong barrier can trap moisture and cause mold or rot inside your walls. We follow Maryland code and manufacturer guidelines to keep your home safe and dry. If you finish a basement or insulate exterior walls, we explain exactly what your project needs and why.
ATTIC TYPES
Old Insulation Can Stay If Dry and Pest-Free
When you add attic insulation or top off existing walls, the material already in place does not always need removal. We inspect for water stains, mold growth, and rodent droppings before deciding whether to keep or remove what you have. Clean and dry insulation gets topped off with new material to reach current efficiency standards. Contaminated insulation gets removed first to protect your indoor air quality.
Older Baltimore homes in neighborhoods like Mount Vernon sometimes contain vermiculite insulation that looks like gray pebbles. This material may contain asbestos, so you should test it before any work begins. We stop immediately if we find vermiculite and recommend certified asbestos testing. Disturbing this material without proper handling creates serious health risks.
Fiberglass and rockwool insulation that lost R-value due to compression or age can stay in place as long as it remains dry and intact. We add new blown insulation on top to restore thermal performance without the cost of full removal. This approach saves you money and completes the job faster while still delivering the comfort and energy savings you expect. Learn more about our insulation removal services in Baltimore.
Get Your Estimate
Enter your information below
- Done Right
- Done Legit
- Maximum Savings
- Done Right
- Done Legit
- Maximum Savings
faq
FAQs
About Insulation & HVAC Services in
Baltimore
1. How long does a retrofit insulation job take in Baltimore?
2. Will retrofit insulation damage my plaster walls?
3. Do I need a permit to add insulation in Baltimore?
4. Can I insulate shared walls in a Baltimore rowhouse?
5. What rebates are available for insulation upgrades in Maryland?
6. Is spray foam or cellulose better for older Baltimore homes?
service areas
Your Local Insulation & HVAC Experts in Baltimore
Serving homeowners across Baltimore, BGE, PEPCO & DELMARVA territories since 2006 with honest energy solutions.
Ready to Lower Your Energy Bills?
- Done Right
- Done Legit
- Maximum Savings
- Done Right
- Done Legit
- Maximum Savings