BigBlue 3T Roofing Demolition Blade
BigBlue 3T in Worm Drive cutting shingles and roof deck
Close up of BigBlue 3T after cutting openings for twenty skylights
BigBlue 3T Roofing Demolition Blade

BigBlue™ 3T Roofing Demolition Blade

A roofing demolition blade built to cut gummy materials including tar and gravel, modified roofing, coal tar pitch, and more!

  • 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.

7-1/4 in. for circular saws and worm drive saws


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.

  • wide-kerf-blade
    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.

  • large-gulluts
    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 - 100%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.

Weight0.5 lbs
Dimensions7.5 × 7.5 × 0.25 in
Package Quantity:

1 Blade, 4-Pack, 8-Pack

Customer Reviews

Based on 15 reviews

Very impressed with the skill saw blade the very first job we used it on was cutting the ridge out on a shingle roof for venting after we put Steel on an apartment building with a Ridgeline of 160 ft so it made a 320 foot cut on either side of the ridge beam and seems like it still has lots of life if you order this product you will not be disappointed thank you very much smartman tools

It works!

It works!
This tool works well at a usually difficult task.
Cuts through roofing materials where other blades cannot.

Built up roof removal

I have a built up roof with 3/4" plywood that I used this blade on. It worked very good and cut both the 2" tar and gravel and the plywood at the same time. I tried other blades and means to cut the roof but this was the answer. It worked great and did not gum up at all. I made a total of 660' of travel and it was still sharp and cutting well upon completion of the job. I would purchase again and try the 5 blade if I needed to do something like this again. I am not a roofer.


Very good. Thank You.

awesome blade

I put it on a cheap Ryobi saw and it just zips through old build up roof when cutting about 3/4" deep