SIKASikaflex Construction Sealant - Limestone, Polyurethane Adhesive, Self-Leveling, Weatherproof, 10.1 oz Cartridge - Seals Joints, Cracks, Gaps in Concrete, Wood - Paintable, Durable, Flexible

SIKASikaflex Construction Sealant - Limestone, Polyurethane Adhesive, Self-Leveling, Weatherproof, 10.1 oz Cartridge - Seals Joints, Cracks, Gaps in Concrete, Wood - Paintable, Durable, Flexible

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: 20552193

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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

🎨Paintable & stain-free finish

🌧️Weatherproof & moisture-resistant seal

🛠️10.1 oz cartridge for easy application

Frequently Bought Together

Sika - Sikaflex - Limestone - Construction sealant - All-purpose polyurethane sealant - For all types of joints 1/2" or smaller - 10.1 fl oz

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

M-D Building Products - Versatile Gray Foam Backer Rod Set 1/2in x 20ft - Essential Caulk Saver for Sealing Concrete Gaps, Expansion Joints, and Crack Filling (71480)

Description

🛡️ Seal smart, live dry — the last sealant your projects will ever need!

INVISIBLE FINISH - Self-leveling and paintable for seamless blending with any surface
UNBREAKABLE BOND - Polyurethane formula delivers high elasticity to prevent cracks and tears
CERTIFIED QUALITY - Meets ASTM and federal specs, reducing radon exposure for safer environments
WEATHERPROOF ARMOR - Seals joints across concrete, wood, metal, and masonry to block moisture infiltration
EFFORTLESS PRECISION - 300 ml cartridge fits all standard guns with a narrow tip for exact placement

SIKASikaflex Construction Sealant is a 10.1 oz polyurethane adhesive designed for durable, flexible, and weatherproof sealing of joints and cracks in concrete, wood, metal, and masonry. Its self-leveling, paintable formula ensures a clean, invisible finish while meeting federal and ASTM standards for quality and safety.

Have a Question? See What Others Asked

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

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

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.

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

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