Sikaflex-1A Colonial White is a moisture-cured non-sag polyurethane in a 20 oz sausage. It seals joints up to 1/2 inch and bonds without a primer on most substrates.
Sikaflex-1A is a moisture-cured non-sag polyurethane joint sealant. This Colonial White 20 oz sausage (part 91005) is for joints up to 1/2 inch, including green and damp concrete. It holds plus or minus 35% movement and bonds to most construction materials without a primer. White and colonial-white can yellow slightly in UV, so this color is a trim match, not a forever-bright white.
| Property | Value |
|---|---|
| Manufacturer | Sika |
| Product | Sikaflex-1A |
| Part no. | 91005 |
| Unit | 20 oz sausage |
| Color | Colonial White |
| Movement | +/- 35% (ASTM C719) |
| Elongation | 550% (ASTM D412) |
| Tack-free | 3 to 6 hours at 73 F |
| Application temperature | 40 F to 100 F |
| Shelf life | 18 months (sausage) |
Product documents: Sikaflex-1A Product Data Sheet (PDF)
What UV yellowing does Sikaflex-1A Colonial White show?
White and colonial-white tend to yellow slightly in ultraviolet light. Light colors can also yellow if they sit in front of a direct gas-fired heating element.
What size is Sikaflex-1A Colonial White?
The sausage is 20 oz (600 ml), part 91005.
What bead yield does Sikaflex-1A Colonial White give?
A 1/4 inch by 1/4 inch bead yields approximately 48 linear feet per sausage. A 1/2 inch by 1/2 inch bead yields approximately 12 linear feet.
What radon work uses Sikaflex-1A Colonial White?
EPA suggests polyurethane as a caulk and crack sealant for radon reduction. This is a urethane-based joint sealant, not a dedicated radon system.
What chlorine limit does Sikaflex-1A Colonial White have?
Maximum continuous chlorine is 5 ppm. Not for swimming pools or submerged work with strong oxidizers, and not where water stays above 120 F.
What elongation does Sikaflex-1A Colonial White have?
550% at break (ASTM D412). Tear strength is 55 lb/in (ASTM D624). Movement capability is plus or minus 35%.
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