Appying Dow 756 SMS Building Sealant

Dow Corning 756 SMS White Building Sealant Sausage 756WS
Brand: Dow
Series: 756


The target surface must be clean, dry, sound and frost-free. Apply masking tape to adjacent surfaces and apply primer as required (refer to Americas Technical Manual,

Form No. 62-1112), before installing an approved back-up material


  • Apply Dow 756 SMS building sealant and tool so all joint sides are wetted out.
  • Wet tooling of the sealant with liquid tooling aids is not suggested
  • Remove any excess uncured sealant from applied surfaces using mineral spirits
  • Remove masking tape immediately after sealant application to maintain neat and clean lines.
  • Under low temperature and low humidity conditions, the curing time may be considerably extended.

Joint Design

Applying a thin sealant bead will allow more movement than a thicker bead. Recommended width-to-depth ratio is 2:1 where possible. A joint depth over backer rod should be 1/8 to 1/2 inches and joint width from 1/4 to 1 inches. Dow Technical Service should be consulted for joint applications outside published guidelines. In all cases, movement of the joint should not exceed ±50 percent of the original joint dimension.

DISCLAIMER: These instructions are from the product manufacturer. PK Supplies Inc. makes every effort to ensure that these instructions are accurate. By following these instructions you agree that PK Supplies Inc. is not liable for any damages or losses caused by these instructions.

Instructions can be used for...