CRL Gray Metal Sash Putty - Quart Finish:Gray Backer Rod is typically used

Backer Rod is typically used in expansion/control joints where cold-applied sealants are used

Paintable after only two hours with water-based paints

preferably after no more than two years to ensure the friction coefficient is not compromised"

which require a non-skinning

long-lasting

CRL Gray Metal Sash Putty - Quart Finish:Gray Backer Rod is typically usedUse for Steel, Aluminum, or Galvanized Window Sash Apply Smoothly without Priming Made expressly for glazing in steel, aluminum or galvanized window sash. CRL Metal Sash Putty is made to apply smoothly, without priming. The gray color blends with the metal finish. Surfaces should be clean, dry, and free of frost. When re glazing, remove all old putty and bedding. If necessary, place glazing in hands and roll into coils to warm and soften. Smooth