BigBlue™ 3T Roofing Demolition Blade


Roofing demolition blade built to cut gummy materials including tar and gravel, modified roofing, coal tar pitch, and more for 7-1/4″ circular saws and worm drive saws.

5x Longer life over framing/demolition blades when cutting dense and gummy materials.
Clog free, warp free, and crack free.
Everlasting carbide teeth with wide kerf.

SKU: BB-111 Category:


BigBlue™ 3T easily cuts through commercial and residential roofing materials and other dense and gummy materials.
  • 4-Ply Tar and Gravel
  • Galvanized Metal
  • Ice Shield
  • Cap Sheet
  • TPO and EPDM
  • Cedar Shakes
  • Rolled Roofing
  • Flashing
  • Gravel Stop
  • Modified Roofing
  • Drip Edge
  • Salvage Edge
  • Shingles and Heavy Nails (5 Layers)
  • Coal Tar Pitch
  • Flashing
  • Hard Board Insulation
  • And Much More!
Save time on commercial or residential jobs and projects.
  • Cut in tight spots where commercial cutters will not fit (under conduit, around makeup air units, and near roof edges).
  • Cut commercial roofing materials without a heavy roof cutter (cut in curbs, small repairs, or maintenance).
  • Cut openings for air conditioning units and skylights.
  • Cut modified roofing into sections (faster than utility knife).
  • Cut multi-layer shingle roofs into sections for easier removal and quicker clean up.
  • Cut 300+ ft. of tar and gravel.
  • Cut 500+ ft. of coal tar pitch (smooth).
  • Cut 5,000+ ft. of shingles and heavy nails (2 layers).
Close up of large carbide teeth
Extreme Strength for Demolition Cuts

Massive carbide teeth cut through tough materials without chipping or dulling. The extra thick steel body will not warp or crack.

Extra-wide Kerf Circular Saw Blade

At just under 1/4 inch, BigBlue™ has the widest kerf available on a 7-1/4 inch circular saw blade.

No-Clog Design

Gullets this large never clog… ever. Open space reduces friction and keeps the blade spinning fast. This empowers circular saws and worm drive saws to cut tough construction materials not possible with other blades.

30-Day Money-Back Guarantee
We understand skepticism. We have been burned by products that don’t live up to their claims too. That is why BigBlue™ 3T comes with a 30-Day Money-Back Guarantee.
0/5 (0 Reviews)

Additional information

Weight 0.5 lbs
Dimensions 7.5 × 7.5 × 0.25 in

13/16 in., 5/8 in.


Circular Saw, Worm Drive Saw

Cutting Depth

2-1/4 in.


7-1/4 in.


3/16 in.

Package Quantity

1 Blade, 4-Pack, 8-Pack

Customer Reviews

Based on 43 reviews
Trace O'Brien (Sylvania, OH)
Amazing Blade

Bought the 3 tooth blade. It was amazing Ripped through 3” of tar like it was butter

Slick (Paoli, PA)
Worth the money

We used these to remove 3/4 decking with snow and ice and a 50 year shingle over that.
Blades performed awesome highly recommend.
The key is to take your time 😎

Fastenal - Bothell, WA branch (Tacoma, WA)

I am not the end user, since I am a reseller, but I can comment on the purchase process. First off, the shipping package was a mess when it got here. It looked like someone was shipping out of their basement, using a letter envelope rather than an actual box. The product was also mis shipped. We ordered 6 of the 3-tooth blades and received 3 of the threes and 3 of the four tooth. Cost and performance are the same, but for this to happen without notice from the shipper caused confusion. These things gave the overall impression of a lack of professionalism. If I get feedback from my customer in field about performance of the blade, I will edit with that information.

I apologize for the error in shipping. We will send you (4) BigBlue 3T to complete the order correctly.

It makes sense that as a reseller you would want individually packaged blades. You can get that if you become a reseller. Here is more info -

Damon Cottman (Philadelphia, PA)
I was very pleased.

The blade that I purchased worked great! It cut threw about 7 layers of roofing material and the plywood with no problem. Awesome product.

Paul Brown (Okatie, SC)

Cut well for a few passes. Then struggled to cut quickly. It did last for a whole roof. But we used old saw blades for a lot of the cutting that went faster

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