M-1 Sealant / Adhesive, SPECIFY COLOR, 2-Gallon Pail - M-1 High Performance Structural Sealant & Adhesive, SPECIFY COLOR, 2-Gallon Pail. Price/Pail. (specify color before adding to cart; special order item; leadtime up to 10 business days; non-returnable; tube shown in photo)
M-1 Sealant / Adhesive, SPECIFY COLOR, 2-Gallon Pail
$232.00 SALE $177.99
(Savings: $54.01)
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M-1 Sealant, Specify Color High Performance Structural Sealant & Adhesive, 2-Gallon Pail. Price/Pail. (tube shown in photo)

Ordering Notes:

  • Specify color before adding to cart;
  • Special order item; leadtime up to 4-6 weeks;
  • Non-returnable.


M-1 is a high performance silyl-terminated, solvent free, UV resistant, moisture curing polyether (tri-polymer). It is a multi-purpose structural sealant designed for difficult bonding and sealing applications. It bonds aggressively to EPDM, PVC, BUR, coal tar, SBS modified bitumen, granulated APP, asphalt shingles, many types of coated metal, metal flashing details and window glass. For TPO roofing, use TPO Primer together with M1 sealant.


Also excellent for underwater repairs. It can be used for emergency repairs of pools, ponds and flat roof repairs. M-1 is a non-slumping, self-fixturing mastic that cures with a tough durable rubber bond using atmospheric moisture. M1 develops a high 45 Shore-A hardness and also excellent resistance to dirt pick-up. It is used as a security sealant in prisons, schools and public buildings, pool wall-to-deck repairs and more. It has high resistance to damage from cleaning and ease of dirt removal. M-1 is paintable within 24 hours. M-1 develops 380 lbs. per square inch of shear strength on metal, masonry and wood. It is capable of 290% elongation, can accommodate dimensional changes in construction materials down to minus 20 degrees F, and is solvent free. It's a tough adhesive capable of bonding steel deck to bar joists and metal sandwich panels to roof and wall purlins. Contains no solvents or VOC's.


  • Concrete (fully cured / dry)
  • Block, Brick, Masonry, Stone
  • Metals, Aluminum, Galvanized
  • EPDM, PVC, SBS modified bitumen
  • Asphalt shingles, Granulated cap sheet
  • TPO roofing, with use of primer.
  • Glass, window frames
  • Wood, painted wood
  • Foam, Vinyl
  • Pool wall, pool tile adhesion
  • Interior / Exterior
  • Withstands ponding water
  • TPO primer is recommended best result in  continuous immersion applications.


  • Do not apply less than 40F. 50F+ recommended for application and cure.
  • Do not use on Kynar finished metal roofing (Use Duralink).
  • Service Temperature: -40F to +200F continuous.
  • Less than 1/2 inch thickness recommended
  • 1/4 inch and greater joint width.
  • Do not apply over silicone sealants.


Cures tack free in 35-45 minutes. Cures complete in 3 to 7 days depending on temperature, humidity and thickness. Higher temperatures and moisture accelerate curing cycle.


Bonding surfaces must be clean and free from dirt, oil and debris. If surfaces require cleaning, wire brush or use alcohol. Don't apply below 30F. See data sheet for detailed instructions.



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Call us at 1-800-474-7570 or 602-272-8128
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similar product terms: m1 sealant, m-1 sealant, m-1 caulking, chemlink m-1, geocel 2300, geocell 2300, tripolymer sealant, tri-polymer sealant, 2300 sealant, high performance sealant, shingle adhesive, roof sealant, roof caulk, structural sealant, adhesive sealant, structural adhesive

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