Mapei Hydro-Expansive Sealant Cartridge, 320ml, Suitable for Sealing Construction Joints and Pipe Penetrations

It is suitable for exterior and interior joints between slabs, blocks, natural stone, brick pavers, and concrete, and works with joint widths from 3 to 15 mm.

Yes. The product is designed for use in both interior and exterior environments.

The product offers long-term durability, with resistance to natural factors for up to 25 years when applied and maintained according to the instructions.

No. The product is water-resistant on its own and does not require additional protective sealants.

Apply the product to dry, clean joint surfaces and allow it to dry. The application is straightforward and designed for easy use on typical joint configurations.

Ensure joints are dry and clean, free of dust, dirt, and loose material. This helps the sealant adhere properly and perform as intended.

Work in a well-ventilated area, wear appropriate protective gear (such as gloves), and follow the label instructions for handling and cleanup.

Yes. Its long-term durability and water-resistant formulation help reduce ongoing maintenance costs and efforts for joints exposed to moisture.

Store upright in a cool, dry place away from heat sources and direct sunlight. Keep the cartridge sealed when not in use and use before the stated expiry.

Two common alternatives you might find on Fepy.com are Mapeflex SJ (a flexible joint sealant) and Sikaflex 1A (a multipurpose sealant). For quick reference, you can view their product pages here: https://fepy.com/product/mapei-mapeflex-sj-310ml and https://fepy.com/product/sikaflex-1a-310ml

It's well-suited for exterior and interior joints in environments where moisture exposure is a concern, such as between slabs, blocks, natural stone, brick pavers, and concrete, with joint widths of 3–15 mm.