SIKA Sikaflex Construction Sealant - White, All-Purpose Polyurethane for Joints 1/2" or Smaller - 10.1 fl. oz - Weatherproof, High Elasticity, Paintable, Strong Adhesion

SIKA Sikaflex Construction Sealant - White, All-Purpose Polyurethane for Joints 1/2" or Smaller - 10.1 fl. oz - Weatherproof, High Elasticity, Paintable, Strong Adhesion

Q: can this be used in-between cement joints in a walkway?

Sika’s self-leveling sealant (and backer rod) is the most appropriate product for that situation. The backer rod prevents 3 point adhesion, which you should look up before performing this job. Self-leveling sealant will flow downhill if used on a slope, so the construction sealant might be a better choice in that particular case.

Q: If used to fill gaps between tiles, how does this (polyurethane) compare with epoxy grout ?

This has a silicone texture, I will use it in for the outdoor area. I would not use this to fill gaps between tiles, you should use epoxy grout especially if it's indoor.

Q: Will this adhere to asphalt for the crack between driveway and cement apron? I’d rather use a weatherproof flexible sealant than asphalt cold patch.

It should! This was recommended by the company who raised up three LARGE concrete patio slabs. Unfortunately, the slabs had all moved in different directions, letting water sit up against the foundation. Once raised up, with settling of earth underneath, a couple of the slabs cracked. I used this sealant to fix those cracks. It's remained in place through two Pacific Northwest (wet) winters. It's remained flexible, keeping slab pieces together with no slippage. Good product!

Q: Can I throw some sand on top of horizontal morter cracks after applying the Sikaflex to give it texture?

I think you can. Think of it as a kind of epoxy. If you throw some sand on its surface before it dries, the sand will end up imbedded in it.

Product ID: 20552194

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Details

Material
Polyurethane
Brand
SIKA
Style
Compact
Item Weight
1 Pounds
Item dimensions L x W x H
11.5 x 2 x

🧩High elasticity prevents cracks & tears

🌧️Weatherproof & moisture-resistant seal

🛠️10.1 fl. oz cartridge for easy application

Frequently Bought Together

SIKA 90618 Sikaflex Construction, 10.1 fl. oz, White 10OZ WHT Const Sealant, 10-Ounce

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Sikaflex Crack Flex Sealant, Gray, High performance, textured polyurethane sealant, self-leveling, sealant for sealing horizontal cracks, 10,1 fl. Oz

Description

🔧 Seal smart, live secure — the last joint sealant you'll ever need!

INVISIBLE FINISH - Self-leveling, paintable formula blends seamlessly with any surface—no stains, no fuss
UNBREAKABLE BONDS - Exceptional adhesion for joints up to 1/2" ensures lasting durability
WEATHERPROOF ARMOR - Seals out moisture across brick, wood, concrete, and metal for year-round protection
CERTIFIED CONFIDENCE - Meets federal & ASTM standards, reducing radon exposure for safer spaces
EFFORTLESS PRECISION - 10.1 fl. oz cartridge fits all standard guns with a narrow tip for flawless application

SIKASikaflex is a premium white polyurethane sealant designed for joints 1/2" or smaller. It offers strong adhesion combined with high elasticity to prevent cracking, is weatherproof to protect against moisture infiltration, and is paintable for a clean, professional finish. Packaged in a 10.1 fl. oz cartridge compatible with standard application guns, it meets federal and ASTM standards, ensuring safety and durability for all your construction sealing needs.