Strengths
What it’s good at
Kitchen, bath, window, door, and siding perimeter sealing — features maximum flexibility (ASTM C920 Class 50), 30-minute water-ready time, and a 20-year mold and mildew resistance guarantee.
Limits
Where it falls short
Not paintable; not for structural glazing, fuel immersion, or continuous water submersion under hydrostatic head pressure.
Specifications
Manufacturer specifications
Every number below is quoted from the manufacturer’s own documentation, linked at the end of the row.
- Initial set
- 20 min — Tack-free skin time 10–25 min; water-ready in 30 min[1]
- Full cure
- 24 h — Full through-cure in 24 h at 73 °F / 50 % RH[1]
- Max service temperature
- 300 °F — Service temperature range −40 °F to 300 °F[1]
- Min application temperature
- -35 °F — Wide all-weather application range from −35 °F to 140 °F[1]
- Water resistance
- 100 % waterproof with 20-year mold and mildew resistance guarantee; meets ASTM C920 Class 50[1]
- Cured color
- Clear (also available in White)[1]
How long it takes
Working time, clamp time, and full cure are different things — this is the order you experience them in.
- Initial set20 min
- Full cure24 h
Sources
Where these facts come from
- [1]DAP Silicone Max 100% Premium Silicone Sealant Technical Data Sheet — DAP Global Inc. · Technical data sheet · Retrieved 2026-08-14
