CRL Gray Metal Sash Putty - Quart Putty & Accessories Limitations It is not recommended

Limitations It is not recommended for concrete and stone expansion joints

and similar applications where joints need protection against fungi and bacteria

weather resistance

Cools to approximately 40F/22C below outside temperature

CRL 95C can be used as a weather seal for insulating glass units produced with any type of sealant

CRL Gray Metal Sash Putty - Quart Putty & Accessories Limitations It is not recommendedUse 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