Polyurethane Caulk: Roof Seal


SeamStitch Polyurethane Caulk

Roof Leak Repair

Corporate Address: EPDM Coatings N.E Sales Office 494 Bridgeport Ave Suite 101, PMB 342 Shelton CT 06484-4748
E-Mail: info@fixallroofs.com
Website: http://www.fixallroofs.com


SeamStitch Polyurethane Elastomeric Caulk is a flashing grade roof seal designed for waterproofing problem areas in roofing. It dries into a very tough seal and is superior to fabric backed peel and stick tape for most roof repair applications.


SeamStitch Polyurethane Elastomeric Caulk is used for sealing fasteners, seams, flashings, penetrations and gutters in metal roofing. May also be used for roofing repairs on Built Up Roofing (BUR), Concrete Roofs, Modified Bitumen, Polyurethane Foam, Single Ply Roofing (EPDM, PVC, TPO).


  • Single component, moisture cure polyurethane.
  • Dries to a tough, seamless, elastomeric roof seal.
  • 600% elongation, moves with the substrate and stays put.
  • Low shrinkage. Ideal for non-structural gaps in roofing.
  • Excellent adhesion to various substrates.
  • Easy to use.


See table on the following page.


  • All surfaces to be coated must be clean, dry and free of any oil, grease or dirt.
  • Any existing coating must be checked for good adhesion.
  • Before application, any loosely adhered coating must be removed and bare surfaces must be prepared, cleaned and checked for compatibility.
  • SeamStitch Polyurethane Caulk is ready to use. Thinning is not recommended.
  • Containers should not be left open for extended periods of time.
  • Follow our roof repair and roof restoration procedures and always perform a coating adhesion test before doing the entire roof.


SeamStitch Polyurethane Caulk is available directly from Fixallroof Coatings, from authorized distributors and online. Contact Fixallroof Coatings for referral to a local Sales Representative or visit our website.

Pricing information can be obtained from Fixallroof Sales Representatives.


Periodic maintenance of Fixallroof Roof Restoration System ensures extended service life and maintains reflectivity.


Contact Fixallroof Coatings for Technical Support. Additional information, product literature, brochures, and specifications are available.


Additional product information is available from Fixallroof Coatings.

SeamStitch Polyurethane Caulk Technical Data

Property Value Test Method
Color: Gray
Viscosity: 39,800 ± 200 cps
Solids by volume: 80.0%±2%
Hardness: 40 Shore A ASTM D-2240
Tensile Strength: 575±50 psi ASTM D-412
Permeability: 0.8 perms ASTM E-96
Elongation: 600% ASTM D-412
Low Temp Flex: Pass @ -60°F ASTM D-412
Flash Point: 145°F
Coverage: 100 lineal feet / gal for 3″ wide x 60 mils thick.
Application Temperature: 45°F – 95°F. Less than 95% relative humidity.
Dry Time: 3 – 6 hours. 12 – 24 hours (initial cure)
Shelf Life: 6 – 12 months @ 75°F

Caution: SeamStitch Polyurethane Elastomeric Caulk is a solvent-based product and contains polyurethane resin and mineral spirits. Keep away from open flame, heat or sparks. Use only in ventilated areas and provide mechanical ventilation in enclosed spaces. Avoid breathing vapor or mist. Approved (MESA/NIOSH) chemical respirator and protective clothing must be used at all times. Fresh air hose masks required for interior applications. Fixallroof Coatings must be completely dry before exposing to water or foot traffic. Keep polyurethan caulk Coatings containers covered when not in use. Dispose of all containers in accordance with state and local environmental regulations. Keep away from children. If ingested, DO NOT induce vomiting. Call Physician immediately.

Product information contained herein are presented in good faith and believed to be reliable. They do not constitute part of our terms and conditions of sale. It is also not a guarantee, either expressed or implied, that the data are correct or that products described are merchantable or fit for a particular purpose as methods of use are beyond our control. Customer should determine the suitability of our materials and installation recommendations before usage. Manufacturer’s sole responsibilty shall be to replace that portion of any product that proved to be defective.

  • Testimonials

    • Ronald S
      Virginia Beach VA

      I ordered a gallon of Liquid Rubber last summer, and inquired if it could be spread with an adhesive applicator trowel; the sales person was not aware of this having been tried. I tried using a commercially available trowel with 4 sawtooth teeth per inch, and 0.135 inch notch depths, holding the trowel at about a 45 degree tilt.
      Read more

    • G Sorrell
      Diboll Lumber Operations

      Everyone was SUPER helpful and knew the product, properties and application methods well. I applied to product on the trailer in about a 2-hour period one evening. It was tricky with the application, from a novice who had not done this before.
      Read more

    • H&W Property Management

      Donna,your staff and your customer service is the reason we buy from you. You had asked us several months ago if we would write up something for your Website. We wanted to get some additional orders first before coming to conclusions.
      Read more

    • T. Basset

      We have completed the resurfacing of our commercial roof back in April and ordered a few more pails for areas where we probably did not apply it thick enough. Just wanted to share these photos with you.
      Read more

    • B & T Contracting

      You have a great product here and we will be ordering for future jobs we have. We were a bit skeptical at first but when it was fully dry it looked as if we installed a new 15,000 sq piece of sheet EPDM.
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    • Jed L
      Biloxi MS

      This will be the third time our firm has ordered. We completed a project in 05 in the fall and waited for the winter. This was actually the first winter without any leaks. Great product overall.
      Read more

  • Contact

    home iconEPDM Coatings N.E Sales Office
    494 Bridgeport Ave Suite 101,
    PMB 342 Shelton CT 06484-4748
    Fax: 702-977-2936
    tell iconTel: 1-610-298-1989
    email iconEmail: info@fixallroofs.com
    website iconWebsite: www.fixallroofs.com

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