Mapei Low-Modulus PU Sealant, 600ml, Suitable for Expansion Joints in Cladding, Balconies and External Walls - S25 White

It comes in a 600 ml non-sag cartridge, is ready to use from the container, and can be applied with a suitable mixing nozzle or caulking gun. It adheres well to many substrates, supports indoor and outdoor use, tolerates temperatures from -25°C to +60°C, and offers excellent adhesion without primer on non-porous substrates.

It is suitable for sealing cracks and expansion/movement joints in walls and floors, for both indoor and outdoor applications, with medium-low movement.

Primer is not required for non-porous substrates when using Mapeflex PU S25 White 600ML.

Cut the nozzle to the desired bead size, load the cartridge into a caulking gun, apply in a continuous bead along the crack or joint, and smooth with a wet tool or finger. Allow curing per site conditions and temperature.

The product is sold in white and also offered in gray. Each unit is a 600 ml cartridge designed for larger sealant projects.

Mapeflex PU S25 is rated for use across a wide temperature range from -25°C up to +60°C.

Yes. It is described as easy-to-apply with a non-sag formulation, ready to use directly from the cartridge, and suitable for gun application.

Work in a well-ventilated area, wear appropriate personal protective equipment (such as gloves and eye protection), avoid skin and eye contact, and clean tools promptly after use with suitable cleaners as per manufacturer guidelines.

Alternatives on Fepy.com include Mapeflex PU S25 Gray 600ml at https://fepy.com/product/mapeflex-pu-s25-gray-600ml and Sikaflex Pro 3 WS 600ml at https://fepy.com/product/sikaflex-pro-3-ws-600ml. These provide similar performance for sealing cracks and joints in walls and floors.

Common uses include sealing cracks in walls and floors, and filling expansion and movement joints in kitchens, bathrooms, balconies, and other indoor or outdoor surfaces where medium-low movement occurs.

Uncured sealant can be cleaned with appropriate cleaners or water as advised. Remove excess material promptly, clean tools and the nozzle, and ensure areas are protected from dust and moisture during curing.