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Spray Foaming Attic Rafters

  • Super Simple & Easy – If You Can Water Your Lawn, You Can Spray Foam it Green
  • Super Fast – Spray the Kit in Just an Hour
  • Almost Foolproof Way to Seal & Insulate – Proven in Over 35,000 Homes, Over 1000 5 Star Reviews

People love sealing and insulating attics. Why? First, because it’s incredibly important to seal the top of your home. Second, this project is quick and easy to do. In just a few hours you can transform your home to be more affordable and comfortable.

The trick is very simple. You’re sealing OUTSIDE air out and keeping air you already heated or cooled INSIDE. That’s how you can save up to 40% on your energy bills.

It’s important you spray foam attic rafters only if you need to. If you’re using the attic for living space, then you need to insulate the rafters. If you’re not, spray foam the attic floor.

Spray foam contractors often tell people to do the rafters. That’s because it’s easier for the contractor to spray than clean up existing insulation, deal with any can lights or venting, etc. This is not good for you.  It leaves you paying to heat and cool a space you don’t even use.

Plus, spraying the rafters uses more spray foam – it’s a larger surface area and hence puts more money in their pocket, not yours.

If you do need to do your rafters, use closed cell Foam it Green. You get a seamless air barrier and high r-value even in just 1 inch. That air seal means you keep the air you heated or cooled INSIDE your home. And it keeps the cold or hot outside air OUTSIDE.

Be on the lookout for this too.  You don’t want to be duped into thinking other types of insulation will give you a tight air seal. Fiberglass won’t seal your rafters and won’t give you the benefits you get with Foam it Green:

  • Installs in Just a Few Hours
  • Better Indoor Air Quality
  • Anti-Microbial formula resists mold and has passed the ASTM G-21 tests
  • Never sags nor settles – once it’s in place you’re done

We Recommend: Use 3 inches Closed Cell Foam it Green for Attic Rafters

Step 1 Measure the length and the width of the attic floor

Length feet
Width feet

Step 2 Measure the height from the attic floor to the peak

Height feet

Step 3 If you have gabled ends, add them here


Step 4 Decide the thickness of foam to spray the underside of the roof


Step 5 Allow for Project Overages



Based on all information, the best combination of kits is:
FOAM IT GREEN 602 Spray Foam Kit: 0 $0.00
FOAM IT GREEN 202 Spray Foam Kit: 0 $0.00
FOAM IT GREEN 102 Spray Foam Kit: 0 $0.00
Total # of Kits: 0 $0.00
If you need 6 or more 602s, get special bulk pricing here or call us at 800-516-0949.

If you have questions about your attic, give us a call at 1-800-516-0949. In just a few minutes you’ll have the information you need to make a smart purchasing decision for your home.
Check out Spray Foam for Attic Rafters >>

Saved over $1000!” — Mike & Holly B.

It exceeded our expectations!” — Greg & Amy L.

It is the ideal solution.” — Dave & Cheryl P.

How to Insulate Your Attic Rafters


Attic Rafter

Rafter 2


Call 1-800-516-0949 for help on this attic project.