Seal Your Cantilevers,
Stay Comfortable
Prevent drafts, frozen pipes, and uneven floors by properly insulating your band joists. Atlas makes your home more comfortable and energy-efficient from the foundation up.



50%
Fewer Drafts – Warmer first floors
Up to 30%
Energy Savings – Reduce heating/cooling costs
100%
Air Sealing – Protects against moisture and leaks
Why Overhangs Need Proper Insulation
A cantilever occurs when an upper floor extends beyond the exterior walls of the lower floor. These areas, often insulated only with fiberglass batts, are prone to significant air leaks. Drafts, uneven temperatures, and even freezing pipes can occur when cantilevered spaces are inadequately insulated.
Atlas removes existing finishes temporarily to install spray foam insulation inside cantilever cavities. This method stops air movement far better than fiberglass and restores the underside finish. Proper cantilever insulation improves comfort, reduces energy costs, and prevents winter pipe freezes.
What’s Included in Your Cantilever Upgrade?
Our service ensures complete insulation and air sealing for long-lasting comfort. Atlas carefully upgrades cantilevered spaces using high-performance spray foam insulation, protecting your home while maintaining the original finishes.
How It Works
From inspection to insulation, Atlas makes your band joists airtight and energy-efficient.
Inspection
Identify leaks, temperature differences, and damaged insulation.
Preparation
Remove finishes carefully to access the cantilever cavities.
Spray Foam Installation
Fill the cavities with high-performance spray foam for maximum insulation.
Final Check
Reinstall finishes and verify energy efficiency improvements.
Why It Matters:
Pros vs. Cons
Neglecting cantilever insulation can affect comfort, energy bills, and even your pipes.
✅ Benefits of Cantilever Insulation
⚠️ Risks of Skipping Cantilever Insulation
Upgrade Your Cantilevers, Upgrade Your Comfort
Atlas provides spray foam insulation and air sealing for all cantilevered spaces, ensuring even temperatures, fewer drafts, and lower energy bills.
Still Have Questions? Let Us Help
Frequently asked questions
How do I know if my cantilever needs insulation?
Look for drafts, uneven temperatures, or freezing pipes in rooms above overhangs.
What type of insulation do you use?
We use closed-cell spray foam, which stops air movement and performs far better than fiberglass batts.
Will cantilever insulation reduce my energy bills?
Yes. Properly insulated cantilevers reduce heat loss, drafts, and HVAC workload, lowering energy costs.
Will installing insulation damage the underside finishes?
No. Atlas temporarily removes finishes, installs spray foam, and then reinstalls the finish without damage.
Subscribe to our newsletter
First name
Email address
Subscribe Now
Seal Your Cantilevers,
Stay Comfortable
Prevent drafts, frozen pipes, and uneven floors by properly insulating your band joists. Atlas makes your home more comfortable and energy-efficient from the foundation up.
50%
Fewer Drafts – Warmer first floors
Up to 30%
Energy Savings – Reduce heating/cooling costs
100%
Air Sealing – Protects against moisture and leaks



Why Overhangs Need Proper Insulation
A cantilever occurs when an upper floor extends beyond the exterior walls of the lower floor. These areas, often insulated only with fiberglass batts, are prone to significant air leaks. Drafts, uneven temperatures, and even freezing pipes can occur when cantilevered spaces are inadequately insulated.
Atlas removes existing finishes temporarily to install spray foam insulation inside cantilever cavities. This method stops air movement far better than fiberglass and restores the underside finish. Proper cantilever insulation improves comfort, reduces energy costs, and prevents winter pipe freezes.
What’s Included in Your Cantilever Upgrade?
Our service ensures complete insulation and air sealing for long-lasting comfort. Atlas carefully upgrades cantilevered spaces using high-performance spray foam insulation, protecting your home while maintaining the original finishes.
How It Works
From inspection to insulation, Atlas makes your band joists airtight and energy-efficient.
Inspection
Identify leaks, temperature differences, and damaged insulation.
Preparation
Remove finishes carefully to access the cantilever cavities.
Spray Foam Installation
Fill the cavities with high-performance spray foam for maximum insulation.
Final Check
Reinstall finishes and verify energy efficiency improvements.
Why It Matters:
Pros vs. Cons
Neglecting cantilever insulation can affect comfort, energy bills, and even your pipes.
✅ Benefits of Cantilever Insulation
⚠️ Risks of Skipping Cantilever Insulation
Upgrade Your Cantilevers, Upgrade Your Comfort
Atlas provides spray foam insulation and air sealing for all cantilevered spaces, ensuring even temperatures, fewer drafts, and lower energy bills.
Still Have Questions? Let Us Help
Frequently asked questions
How do I know if my cantilever needs insulation?
Look for drafts, uneven temperatures, or freezing pipes in rooms above overhangs.
What type of insulation do you use?
We use closed-cell spray foam, which stops air movement and performs far better than fiberglass batts.
Will cantilever insulation reduce my energy bills?
Yes. Properly insulated cantilevers reduce heat loss, drafts, and HVAC workload, lowering energy costs.
Will installing insulation damage the underside finishes?
No. Atlas temporarily removes finishes, installs spray foam, and then reinstalls the finish without damage.
Subscribe to our newsletter
First name
Email address
Subscribe Now
Seal Your Cantilevers,
Stay Comfortable
Prevent drafts, frozen pipes, and uneven floors by properly insulating your band joists. Atlas makes your home more comfortable and energy-efficient from the foundation up.
50%
Fewer Drafts – Warmer first floors
Up to 30%
Energy Savings – Reduce heating/cooling costs
100%
Air Sealing – Protects against moisture and leaks



Why Overhangs Need Proper Insulation
A cantilever occurs when an upper floor extends beyond the exterior walls of the lower floor. These areas, often insulated only with fiberglass batts, are prone to significant air leaks. Drafts, uneven temperatures, and even freezing pipes can occur when cantilevered spaces are inadequately insulated.
Atlas removes existing finishes temporarily to install spray foam insulation inside cantilever cavities. This method stops air movement far better than fiberglass and restores the underside finish. Proper cantilever insulation improves comfort, reduces energy costs, and prevents winter pipe freezes.
What’s Included in Your Cantilever Upgrade?
Our service ensures complete insulation and air sealing for long-lasting comfort. Atlas carefully upgrades cantilevered spaces using high-performance spray foam insulation, protecting your home while maintaining the original finishes.
Finish Removal
& Prep
Air Leak Sealing
Energy Efficiency Boost
Moisture Barrier Protection
Spray
Foam Installation
How It Works
From inspection to insulation, Atlas makes your band joists airtight and energy-efficient.

Inspection
Identify leaks, temperature differences, and damaged insulation.
Preparation
Remove finishes carefully to access the cantilever cavities.
Final Check
Reinstall finishes and verify energy efficiency improvements.
Spray Foam Installation
Fill the cavities with high-performance spray foam for maximum insulation.

Why It Matters:
Pros vs. Cons
Neglecting cantilever insulation can affect comfort, energy bills, and even your pipes.
✅ Benefits of Cantilever Insulation
⚠️ Risks of Skipping Cantilever Insulation
Upgrade Your Cantilevers, Upgrade Your Comfort
Atlas provides spray foam insulation and air sealing for all cantilevered spaces, ensuring even temperatures, fewer drafts, and lower energy bills.
Still Have Questions? Let Us Help
Frequently asked questions
How do I know if my cantilever needs insulation?
Look for drafts, uneven temperatures, or freezing pipes in rooms above overhangs.
What type of insulation do you use?
We use closed-cell spray foam, which stops air movement and performs far better than fiberglass batts.
Will cantilever insulation reduce my energy bills?
Yes. Properly insulated cantilevers reduce heat loss, drafts, and HVAC workload, lowering energy costs.
Will installing insulation damage the underside finishes?
No. Atlas temporarily removes finishes, installs spray foam, and then reinstalls the finish without damage.
Subscribe to our newsletter
First name
Email address
Subscribe Now