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🛡️ Seal smart, seal strong — the last sealant your projects will ever need!
SIKA Sikaflex-1a is a premium polyurethane sealant designed for small joints up to 1/2 inch, offering superior elasticity (±35% movement), rapid curing (tack-free in 3 hours), and robust resistance to weathering and aging. Certified to ASTM and NSF standards, it’s ideal for windows, door frames, and concrete surfaces, ensuring durable, waterproof seals that keep your projects flawless and on schedule.
| ASIN | B00461KMIY |
| Best Sellers Rank | #4,751 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #6 in Polyurethane Adhesives #39 in Urethane Adhesives |
| Brand | SIKA |
| Brand Name | SIKA |
| Color | White |
| Compatible Material | Concrete |
| Customer Reviews | 4.4 out of 5 stars 754 Reviews |
| Included Components | Cartridge |
| Item Dimensions | 2 x 2 x 12 inches |
| Item Form | Fl |
| Item Type Name | Adhesive |
| Item Weight | 16 ounces |
| Item dimensions L x W x H | 2 x 2 x 12 inches |
| Manufacturer | Sika |
| Material | Polyurethane |
| Material Type | Polyurethane |
| Model | 91017 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Part Number | 91017 |
| Style | polyurethane |
| Style Name | polyurethane |
| Surface Recommendation | Concrete |
| UPC | 033886002752 |
| Unit Count | 1 Count |
| Water Resistance Level | Waterproof |
M**T
Excellent sealant
Excellent sealant. I’ve used it in my unfinished garage and basement, and I’d use it outside too if needed. It’s rated for ±35% joint movement. It started curing within a few hours for me and was dry enough by the next day. The Limestone color is more of a light gray than a tan. I found a metal caulking spatula worked best for smoothing it since it’s pretty thick.
S**S
Great product
This product is amazing. I sprinkled ittle sand and it blended completely with my driveway. Cracks are all gone
T**.
Could for glass block. Flexible
Works great on glass block left a good, flexible seal. Don't get it on yourself.It's very messy to work with
L**L
Seems like good stuff
Garage floor and driveway apron started to settle apart I filled the crack with this to prevent water intrusion and further erosion. Went in nice. Looks good. Seems to be a good seal. I wire wheeled it prior to application. We will see if the bond holds up over time.
M**.
Easy to install, good pliable use on my floor.
I used this product to fill the cracks on my garage floor. It works good. So far it has been standing up to daily wear and tear of the floor as normal. I am very happy 😊.
J**L
As advertised
As advertised
K**N
Waste of money!
I tried several times to squeeze out the sealant, but the top portion of it had already hardened, causing the tube to break and the unhardened sealant to leak out, creating a mess. I strongly advise against purchasing this product; it’s a waste of money.
D**A
Mika 1a sealant
Easy to use. Mess free. Served the purpose.
G**N
Buen producto
Me ha funcionado muy bien, para sellar lugares donde se filtraba el agua
A**A
Buen sellador
Lo utilicé en las juntas de una regadera la cual presentaba filtraciones y el producto cumple su función
A**.
Réparation piscine
Très bon et il s'applique bien
K**A
Great
A great paste for filling cracks and gaps and for all uses.
S**N
Curing time and thickness
It cured fast stuck to outdoor concrete on stairs filled in the gaps and dried hard. It slowly came out of the nozzle and was easy to mold into place. It did not fall off the concrete wall.
Trustpilot
1 week ago
2 months ago