

This Month Promotion ❤️ with extra discounts up to 5%. Discounts for new customers, the more you buy, the more you save, up to 55,000 baht! Until November 30.
This Month Promotion ❤️ with extra discounts up to 5%. Discounts for new customers, the more you buy, the more you save, up to 55,000 baht! Until November 30.

Leak plugging mortar (hydraulic cement plug) sets in minutes to stop active water leaks from cracks, pipe penetrations, tanks, pits, basements and pools, even while water is flowing. Use it before applying waterproofing. 1-5 kg packs from Jorakay, LANKO, BESBOND and BOSNY.













Leak-plugging mortar, also known as cement plug or water plug mortar, is a specialty construction chemical made to stop water leaking through concrete and masonry quickly and for good. It sets and hardens within minutes, even with water flowing through the crack, so it can stop a leak on the spot. It works on concrete walls, floors, water tanks and areas under high water pressure. Choosing the right leak-plugging mortar for walls or leak-sealing adhesive is key to getting the best waterproofing result.
Leak-plugging mortar comes in several types, each developed for a different job and type of leak.
Type | Key Properties | Main Uses |
|---|---|---|
bCement plug / water plug mortar | Very fast setting (within 1-3 minutes), high compressive strength, excellent bond | Stopping water from cracks, holes or voids in concrete and masonry; emergency leak repair; plugging leaking holes |
Flexible leak-sealing mortar | Highly flexible, tolerates structural movement, doesn't re-crack | Sealing joints and cracks with slight movement, cracks in concrete walls, cement crack filling |
Leak-sealing liquid or adhesive | Penetrates fine cracks well, forms a waterproof film, adds reinforcement | Repairing small to medium cracks, boosting waterproofing performance, liquid leak sealer for masonry |
Leak-plugging mortar is widely used to fix and prevent water seepage in many kinds of work:
Understanding the technical properties helps you pick the right product for the job.
Property | Details | Why It Matters |
|---|---|---|
Setting time | From 1-3 minutes (cement plug) up to 10-30 minutes | How fast the leak is stopped; suited to emergency repairs |
Bond | Excellent on concrete and masonry surfaces | Strength and durability of the patch |
Compressive strength | High once set and fully cured | Load-bearing ability and long-term performance |
Waterproofing | Excellent resistance to water seepage | How well it solves seepage problems |
Chemical resistance | Some types resist mild acids and alkalis | Suited to specific environments |
When buying leak-plugging mortar, consider the type of leak, the surface and how urgent the repair is. Trusted brands in the Thai market include Jorakay leak-plugging mortar, TPI, LANKO, BESBOND and BOSNY, in a range of formats. Check each product's specific properties to get the best result. If you're looking for Jorakay leak-plugging mortar prices or other brands, you can check product details, current prices and the full range at OneStockHome, a one-stop source for construction materials and repair supplies.