

💪 Seal it fast, keep it flawless – your concrete’s new best friend!
Bostik Concrete Sealer 5L is a water-based, quick-drying sealer designed for internal non-structural concrete surfaces like garage and utility floors. It forms a clear, waterproof barrier in a single coat that prevents dusting, water penetration, and resists dirt, oil, and stains, ensuring long-lasting floor protection with easy maintenance.
| ASIN | B09W67BLXL |
| Batteries Required? | No |
| Best Sellers Rank | 32,233 in DIY & Tools ( See Top 100 in DIY & Tools ) 530 in Sealers |
| Colour | Clear |
| Customer Reviews | 4.6 4.6 out of 5 stars (159) |
| Date First Available | 22 Mar. 2022 |
| Included Components | 1 x Bostik Concrete Sealer 5 Litres |
| Item Package Quantity | 1 |
| Item Weight | 5.19 kg |
| Item model number | 30612883 |
| Manufacturer | Bostik Limited |
| Material | Water Based |
| Part Number | 30612883 |
| Product Dimensions | 18.5 x 13.3 x 28.2 cm; 5.19 kg |
| Style | Compact |
L**A
Highly recommend
Bought this for a new build garage and it was so easy to use. It sealed the floor perfectly and was applied and dried in only a few hours in the summer. Would highly recommend
T**M
Perfect Product
Excellent product. Although the product states indoor use, I used this to seal an outside slope. Previously the top layer of concrete on the slope was washing away in the rain leaving a powdery residue over the drive way. Once sealed the surface was stabilised and after several weeks of heavy rain the surface remains sealed and protected. This is so easy to use. I highly recommend this product as it solved my problem with one coat.
T**.
Sealing garage floor
Just started to use product. Garage floor new and very powdery cement laid down. Swept up as much cement dust as possible and applied the Bostic product. It was easy to apply and dried quickly. I was impressed by the low coverage rate. After 1 st coat will probably apply a second in main ware areas.
J**.
Worked perfectly on my garage floor
My garage was endlessly filled with dust so I gave this a go. Absolutely perfect. Easy to apply (be sure to use a paint roller that's designed for thicker paint or gloss) and dried quickly. Scrub the floor with disinfectant first and let it dry overnight, and remember not to apply 2 coats, as once it's dry it's done
R**T
Simple solution to reduce concrete dust
Like...simple roller application using kit I had already from my decorating box. Drys quick and you can see where you have bin. Leaves the original concrete a shade or two darker but otherwise no obvious difference in colour. It works, no sanding since I put it down. Dislike...went through a lot of it and had to get two 5Ltr tubs for a 6m x 7m floor area as the 'crete just seemed to suck it up.
N**R
Did the job, no issues.
The product has satisfactorily sealed a concrete garage floor. I used a roller and a paint tray. The roller is easily washed out with warm water and some dish soap. I was satisfied after 2 coats that the concrete was properly sealed. Impossible to judge long term durability at this stage. Coverage pretty good. A decent product, did the job.
R**C
Worked on a new concrete base for garage
Did exactly what I needed . I’d had a new base laid for my sectional garage so needed to seal it before applying garage floor paint for my workshop space ( area 19’ x 10’) . The concrete had been laid been dried out but had left a very dusty surface . Following the instructions I brushed ( and vacuumed ) the surface to try and make it as debris free as possible . Application was easy with a high pile roller. Going on with a white hue so you can easily see where you’ve been … and not been . Drying time was as instructed. Very happy with the results . Seemly it sealed the dried out concrete garage floor well ready for garage floor paint . Only grumble is I only used just over half so a fair bit of waste.
D**D
Concrete sealer
Good quality product at a good price.
Trustpilot
3 weeks ago
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