Lexis Coatings » SeamStitch » SeamStitch Butyl Caulk

SeamStitch Butyl Caulk

Membrane Roofing / Fluid Applied Roofing / Elastomeric Roof Coating - 075600
Product Name

SeamStitch Butyl Caulk

Lexis Coatings LLC
6460 Hwy 92 Ste 100
Acworth, GA 30102
United States
Butyl Caulk - SeamStitch
Product Description

SeamStitch Butyl Caulk is a white, solvent-based brush grade butyl rubber caulk. Seals sheet metal fasteners, seams, laps and flashings prior to the application of elastomeric roof coatings.

  • Caulking and sealing sheet metal fasteners, seams, laps and flashings prior to the application of roof coatings.
  • Patching concrete, brick and masonry. Filling gaps in sidings and framed openings. Excellent roof sealant for small roof repair jobs.
  • Excellent elongation and tensile strength.
  • Excellent weatherability and UV resistance.
  • Highly flexible over a wide temperature range.
  • Superior adhesion to various substrates.
  • Durable vapor barrier seam sealer.
  • Withstands ponding conditions in low slope roofs.
Technical Data

See table on the following page.

  • Ready to use. Thinning is not necessary. Mix well before using.
  • Roof must be clean, dry and free of any oil, grease, dirt or loosely adhered coating. Bare surfaces must be prepared and checked for compatibility.
  • Follow our roof restoration procedures and always perform an adhesion test.
  • Equipment: putty knife, bulk loader.
Availability and Cost

This product is available directly from Lexis Coatings and our authorized distributors.


On pre-qualified and registered applications completed by Lexis-approved contractors, long term warranties are available. Contact Lexis Coatings for warranty information.


Read our Care and Maintenance Guidelines.

Technical Services

Contact Lexis Coatings for technical support.

Filing Services

Additional product information is available from Lexis Coatings.

Technical Data

Property Value Method
Application Temperature 45°F (and rising) - 95°F. Less than 85% relative humidity
Clean Up Xylene
Color White
Coverage As Needed.
Density 7.4 - 7.8 lbs/gal
Dry Time Dry to touch in 3-4 hours.
Elongation 500% ±50% ASTM D-1644
Flash Point 68°F
Hardness 55 Shore A
Packaging 1 gallon pail, 5 gallon pail
Permeability 0.005 perms/in ASTM E-96
Shelf Life 3-6 months @ 40°F-90°F
Solids by Volume 56 ±3% ASTM D-1644
Tensile Strength 500 ±50 psi ASTM D-412
VOC <500 grams. Liter
Viscosity 65,000 ± 15,000 cP Brookfield