Roof Types

  • Asphalt
  • Hot Mop
  • Mod Bit
  • EPDM Concrete
  • TPO (needs to be atleast 10 years old)



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Butyl Rubber Elastomeric Caulk

1. Product Name

SeamStitch® Butyl Elastomeric Caulk

2. EPDM Coatings

P.O Box 3429, Wernersville PA 19609, EPDM Coatings N.E Sales Office, 494 Bridgeport Ave Suite 101, PMB 342 Shelton,CT 06484-4748 URL: www.epdmcoatings.net

3. Product Description

SeamStitch® Butyl Elastomeric Caulk is a solvent based, waterproof, butyl rubber brush grade caulk and roof sealant.

Basic Uses

Built Up Roofing(BUR),Concrete Roofs, Metal Roofs, Modified Bitumen, Polyurethane Foam, Single Ply Roofing (PVC, TPO).

Caulking and sealing sheet metal fasteners, seams, laps and flashings prior to the application oroof coatings. Patching concrete, brick and masonry. Filling gaps in sidings and framed openings. Excellent roof sealant for small roof repair jobs.

  • Superior adhesion to various substrates.
  • Durable vapor barrier seam sealer.
  • Excellent elongation and tensile strength.
  • Withstands ponding conditions in low slope roofs.
  • Contains fungicides and mildewcides.
butyl elastomeric 

4. Technical Data

See table on the following page.

5. Installation

  • This product is a vapor barrier and must be installed on dry substrates only.
  • 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® Butyl Elastomeric Roof Coating is ready to use. Thinning is not recommended.
  • Containers should not be left open for extended periods of time.
  • Follow our and roof restoration procedures and always perform a coating adhesion test before doing the entire roof.
  • Putty Knife: 4" flexible blade.
  • Brush: Good quality, stiff synthetic bristle brush.

6. Availability & Cost

SeamStitch® Butyl Elastomeric Caulk is available directly from EPDM Coatings and from online distributors. Contact EPDM Coatings for pricing information.

7. Warranty

On preapproved, qualified applications, using EPDM approved applicators, a 10 year warranty is available. Contact EPDM Coatings for complete warranty information.

8. Maintenance

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

9. Technical Services

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

10. Filing Services

Additional product information is available from EPDM Coatings.

This product data sheet conforms to the editorial style prescribed by The Construction Specifications Institute.
The manufacturer is responsible for technical accuracy.

SeamStitch® Butyl Elastomeric Caulk Technical Data

Property Value Test Method
Color White or any custom color
Viscosity 35,000 cps Brookfield
Solids by volume 52% ± 2%
Density 7.7 ± .2 lbs per gallon
Hardness 55 Shore A ASTM D-2240
Tensile Strength 500 ± 100 psi ASTM D-412
Permeability 0.005 perms/inch ASTM E-96
Elongation 525% ASTM D-412
Flash Point 68°F
Coverage As needed.
Application Temperature 45°F (and rising) - 95°F, Less than 85% relative humidity.
Dry Time Dry to touch in 3 - 4 hours, 4 - 10 hours to recoat.
Shelf Life 6-8 months @ 40°-90°F
Clean Up Xylene
VOC 460 g/lit

Freight Classification: Paint - Flammable Liquid (UN 1263 Red Label Required)

Warning: SeamStitch® Butyl Elastomeric Caulk contains Xylene, VM & P Naptha. 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. EPDM Coatings must be completely dry before exposing to water or foot traffic. Keep EPDM 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.

butyl caulk

This product data sheet conforms to the editorial style prescribed by The Construction Specifications Institute.
The manufacturer is responsible for technical accuracy.