Spray Foam vs Fiberglass | Find the Right DIY Insulation Kit
Want to insulate
but not sure which
type to use?
Fiberglass fills the space. Spray foam fills the space and helps seal the gaps where cold air sneaks in. If you have drafts, corners, pipes or metal walls, start with a kit built for those details.
Y’allCanDIY Spray Foam Insulation Kit 36 Pack · 32.8 oz · 750 ml foam per can
★★★★★4.9/5 · 2,269 reviews- About 720 sq ft at 1 inch thickness
- Foam guns, cleaners and accessories included
- White coveralls, gloves, goggles and masks in the box
Everything in this 36-pack
- 36 spray foam cans
- 4 application guns
- 4 gun cleaners
- 4 white safety suits
- 4 pairs of safety glasses
- 4 masks
- 24 pairs of gloves
- 8 long straws
- 36 gun straws
- 8 nozzles
- 36 gun spreaders
See what works for your space.
Spray Foam
-
✓Insulate and help air-sealOne application, two jobs
-
✓Reaches gaps and cornersExpands into suitable spaces
-
✓Fits around awkward shapesLess cutting around obstacles
-
✓A complete DIY kitFoam, tools and protective gear
Fiberglass Batts
-
×Cutting and fittingWork around each obstacle
-
×Separate air sealingBatts don’t seal gaps on their own
-
×A careful fit mattersGaps can reduce performance
-
×Standard sizes, fixed shapesLess adaptable to odd spaces
your space
the area
right kit
You don’t have to guess the quantity. Start with your area and planned thickness.
You’re
not alone.
You want a more comfortable home, garage or workspace. You start searching and fiberglass looks familiar. But is it the right fit for your project?
Let’s compare your options and find the right approach for your space.
- Can I install
it myself? - Which tools
will I need? - What about gaps
and corners? - Will it
last? - Will it stop
drafts? - Is it worth
the investment?
What are you insulating?
Find your project, then check the surface and coverage that fit your plan.
Garage
Make a hard-working space more comfortable by targeting suitable wall bays, edges and drafty corners.
Plan your project ↗ PROJECT 02Attic
Work around rafters and tricky roofline shapes where a close fit matters.
Plan your project ↗ PROJECT 03Workshop
Add insulation to the space where you build, store and get things done.
Plan your project ↗ PROJECT 04Basement
Focus on suitable rim joists and transitions where outside air can sneak in.
Plan your project ↗ PROJECT 05Metal building
Follow suitable panels, seams and uneven surfaces with a plan for the right thickness.
Plan your project ↗ PROJECT 06Trailer
Estimate the needs of a compact build before you start sealing and insulating.
Plan your project ↗HOW MUCH SPRAY FOAM
DO YOU NEED?
Enter your surface area, choose a thickness and add a buffer. See the estimated can count for both sizes, then find available kits for your project.
ENTER AN AREA
Get a clear estimate for both can sizes.
Coverage estimate: about 20 sq ft per 32.8 oz can or 23 sq ft per 36.6 oz can at 1 inch thickness. Actual coverage varies with surface and application. Kit suggestions use available products and aim for the closest supply above your estimate, then the fewest kits and the lowest price among those combinations.
Choose your spray foam kit.
Start with your can size, then choose the supply your project needs.
36-Pack Full DIY Kit
Foam, application tools and protective gear in one set.
18-Pack Full DIY Kit
Foam, application tools and protective gear in one set.
12-Pack Full DIY Kit
Foam, application tools and protective gear in one set.
6-Pack Full DIY Kit
Foam, application tools and protective gear in one set.
576-Can Bulk Bundle
Stock up for bigger jobs and repeat projects.
288-Can Bulk Bundle
Stock up for bigger jobs and repeat projects.
144-Can Bulk Bundle
Stock up for bigger jobs and repeat projects.
36-Pack Full DIY Kit
Foam, application tools and protective gear in one set.
24-Pack Full DIY Kit
Foam, application tools and protective gear in one set.
18-Pack Full DIY Kit
Foam, application tools and protective gear in one set.
12-Pack Full DIY Kit
Foam, application tools and protective gear in one set.
6-Pack Full DIY Kit
Foam, application tools and protective gear in one set.
576-Can Bulk Bundle
Stock up for bigger jobs and repeat projects.
288-Can Bulk Bundle
Stock up for bigger jobs and repeat projects.
144-Can Bulk Bundle
Stock up for bigger jobs and repeat projects.
One complete kit.
Ready to work.
Spray foam, application tools and protective essentials, together. Choose the pack size that fits your project, then check its exact contents.
Spray Foam Cans
Insulate suitable surfaces and help seal gaps.
Application Gun, Nozzles & Spreaders
Control the spray and reach awkward spaces.
Gun Cleaner
Care for your application gun after the job.
Safety Gloves
Protect your hands while you prepare and apply.
Safety Goggles
Keep your eyes protected during application.
Protective Mask
Part of the protective gear supplied with your kit.
Item quantities and protective gear vary by kit. White coveralls are included in the featured 36-pack.
Follow the product label and safety data sheet for required protective equipment.Spray foam vs fiberglass
They both insulate. But they work very differently.
Fills. Seals.
- Conforms to suitable shapes
- Reaches gaps and corners
- Insulates and helps air-seal
- Foam and tools in one kit
for your project
Spray foam
Batts
Fit. Repeat.
- Fits standard cavities
- Requires cutting and fitting
- Doesn’t seal gaps on its own
- Needs separate air sealing
Why spray foam?
Illustrative comparison. Suitability, cost and performance depend on the product, installed thickness and project. Follow the product instructions.
How to use.
Six simple steps to picture your project. Read the product label before you begin.
Clean
Remove dust, dirt, oil and loose material for a clean surface.
Lightly moisten
Lightly mist the surface before applying, as the label directs.
Shake well
Shake thoroughly before use and during the application.
Attach the gun
Attach the can securely. Keep it upside down while spraying.
Spray evenly
Spray from 12–18 inches away with steady, controlled movement.
Build in layers
Let the first layer cure before adding the next. Follow label thickness limits.
Real footage. Real projects.
Watch what arrives, how the foam goes on and what the finished work looks like.
Pay for the foam. Keep the labor.
See how a complete kit helps you take on the insulation work yourself.
Watch the foam work.
A quick look at controlled spraying in an unfinished space.
From open bay to filled space.
See the texture and coverage of a completed application.
Make the space more usable.
Follow a real project and picture what you could tackle next.
What customers are saying.
Customer photos and feedback from real Y’allCanDIY kit reviews.
“The kit had what I needed and the foam stayed in place well. I’d buy it again.”Austin, Y’allCanDIY customer36-pack · 36.6 oz · Review published on Judge.me
“I was a little unsure at first, but once I got going, it was pretty easy to use.”Kat M., Y’allCanDIY customer12-pack · 32.8 oz · Review published on Judge.me
“I used 18 cans for a pretty good-sized room, and it worked great.”Michael R., Y’allCanDIY customer18-pack · 36.6 oz · Review published on Judge.me
Stop comparing.
Start insulating.
Turn that drafty garage or unfinished workshop into a space you can enjoy more. Start with the complete kit, with foam, tools and protective gear together.
36-Pack Full DIY Kit
“I used 18 cans for a pretty good-sized room, and it worked great.”Michael R., Y’allCanDIY customer
18-pack · 36.6 oz
in one box ↑