Substrate Preparation

• All surfaces must be clean and dry.
• Degrease and wash off any contaminants that could impair adhesion
• Suitable solvents include isopropyl alcohol, acetone or methyl ethyl ketone
• A primer may be needed for optimum adhesion to some substrates based on testing conducted by the end user
• Information on Dow primers is available on request from Dow.

DOWSIL™ Sanitary & Tile Sealant is neither tested nor represented as suitable for medical or pharmaceutical uses.

• Do not use for structural glazing.
• Not recommended for continuous water immersion applications.
• Not recommended for use with marble and similar highly porous stone finishes where sealant may affect their appearance.
• Sealant may discolour copper and brass.
• Not recommended for expansion joints where high movement is expected
• Not recommended for use in below-ground joints or trafficable joints where abrasion and physical misapplication are encountered.
• Not recommended for use in the construction or sealing of aquariums
• Cannot be painted, as paint will not adhere to sealant
• Not recommended for use on polycarbonate plastic sheeting, suitability for use on other types of plastic should be tested prior to application
• Not for use on freshly painted surfaces (enamel or solvent containing types)
• Should not be applied to materials that bleed plasticizers or solvents or release by-products that may inhibit cure, affect adhesion or discolour the sealant (e.g., bituminous-based adhesives and coatings)
• Do not clean or treat the sealant with materials, solvents or cleaning agents that may affect or discolour the sealant, particularly during sealant cure
• Do not apply at temperatures below 4°C or when substrate surface temperatures exceed 50°C