Mapei Elastic Sealing Tape, 20m, Suitable for Flexible Waterproofing of Corners and Movement Joints 300mm Wide

It adheres to concrete, masonry, wood, insulation boards and other common substrates, and works with mosaics, stone, ceramic and glass tiles, making it versatile for indoor and outdoor tiling projects.

The product is described as ready-to-use and high-performance, supplied in 20 MT bricks (250 mm x 250 mm x 40 mm). It offers excellent adhesion and flexibility, is suitable for wet and dry areas, provides UV and weather resistance, has low odor, and is ASTM E84 UL-classified for surface burning characteristics.

Prepare a clean, dry surface. Apply the adhesive with a hand pad or trowel appropriate for the tile size, press tiles firmly into the adhesive, and back-butter larger tiles if needed. Maintain a workable open time under your job conditions and allow the adhesive to cure before grouting.

Yes. Mapeband Flex 300-2 is designed for indoor and outdoor projects and is suitable for wet areas, with weather- and UV-resistance to handle exposure.

Both are flexible tile adhesives from Mapei’s Mapeband line. Mapeband Flex 300-2 is positioned as a high-performance option with strong flexibility for movement and outdoor use, while Flex 200-2 is a related alternative with similar compatibility but slightly different formulation or performance characteristics. See the Mapeband Flex 200-2 product page for specifics: https://fepy.com/product/mapeband-flex-200-2-20-mt

Ideal for tiling projects that require movement tolerance and outdoor durability, including residential and commercial walls and floors, mosaics and stone installations, and ceramic or glass tile applications in wet or exposed environments.

It is low-odor and is ASTM E84 UL-classified for surface burning characteristics, indicating safer fumes compared to some other adhesives. Handle with standard PPE, work in a well-ventilated area, and follow general tile adhesive handling guidelines.

Store the product in a cool, dry place in the original packaging to maintain performance. Keep away from moisture and follow any shelf-life guidance printed on the packaging.

Fepy typically offers returns under its standard policy for eligible products. If you need to return Mapeband Flex 300-2, follow the store’s return process within the allowed window and ensure the packaging remains in usable condition.

Ensure the surface is clean, completely dry, sound, and free of dust, oil or sealers. Remove laitance and other contaminants to maximize adhesion.

Reassess substrate preparation, confirm correct adhesive application and tile size, and review grout joint spacing. If issues persist, consult the product guidelines and consider reworking the area as needed.