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Seam Tight Rubber Seam Compound

SeamTight is also a product we manufacturer so it is compatible with our RvRoofMagic and is an excellent filler to go around vents an air conditioners and reinforce seams so you never need to worry about them again. For seams you will push the product out along the seam and go back with a paintbrush the even it out. Then you will roll out our fabric and impregnate the fabric into the wet material using a dry paintbrush so the SeamTight is able to be absorbed into the fibers of the fabric. Let that set overnight and then apply the RvRoofMagic over the entire roof. At this point your seams are total encapsulated and you will never need to worry about your seams again!

Seam Tight effectively protects your roof against alligatoring and other damaging conditions with the SeamTight roof repair product. Designed with 400% elongation, 1000 PSI tensile strength and UV stable, The result are a strong yet flexible membrane that can withstand roof wear of all kinds on seams, fasteners, and penetrations. Any non-used product has a 3 year shelf life.

Can be use on the following roof types

  • EPDM
  • Metal Buildings and Roofs
  • Modified and BUR Roofs
  • Urethane Foam Roofs
  • Single Ply Roofs

EPDM Roofs

The surface must be free of any oils, moisture, rust scale, soil or other contaminants that may interfere with good adhesion. Remove any loose material from seams or other surfaces with a wire brush or scraper. Oil and grease should also be removed with solvents or an appropriate cleaner, such our RoofProtect. In many cases, high pressure water blasts will be sufficient to prepare the surface.

For best results, the temperature of the ambient air and the substrate should be within a range of 40° - 110°F. Although lower temperatures can be used for brush applications, it is recommended that the product temperature be a minimum of 70°F when pumping the product.

SeamTight can be brushed, rolled or pumped onto the surface. Apply heavy, uniform coats over fasteners, seams etc.…to ensure maximum coverage


Type of Resin Synthetic Rubber
Color White
Elongation 400%
Tensile Strength 1000 PSI
Reduction None
Flash Point 101°F
Specific Gravity 0.94
Weight (lb./gal.) 7.86
Solids(%/Weight) 60±1
Solids(% by Vol.) 53±1
Viscosity* 12,000
VOC (grams/liter) 436

*Centipoise @ 100±F