Crommelin Cemproof Flex 1P Waterproofing Membrane

Flexible Cementitious Waterproofing and Long-Lasting Protection for Walls, Basements & Pools

Cemproof Flex 1P is a high-performance cementitious waterproofing membrane designed for damp surfaces, basements, swimming pools, retaining walls, and more. Whether you need positive or negative side waterproofing, this flexible waterproofing solution ensures superior protection while allowing the substrate to breathe.

This single-component waterproofing membrane is easy to mix—just add water! Formulated with acrylic polymers, high-quality cements, and well-graded aggregates, Cemproof Flex 1P delivers exceptional adhesion, UV resistance, and crack-bridging performance.

Why Choose Cemproof Flex 1P?

• Perfect for interior & exterior waterproofing – Ideal for balconies, slab edges, tanks, and planter boxes.
• Resistant to hydrostatic pressure – Prevents leaks in below-ground structures.
• Flexible & crack-bridging – Covers hairline and shrinkage cracks for long-lasting protection.
• Strong adhesion on multiple surfaces – Works on concrete, masonry, stone, and cement boards.
• High abrasion & UV resistance – Suitable for both indoor and outdoor applications.

Where Can You Use Cemproof Flex 1P?

• Damp surfaces & negative waterproofing
• Balconies, podium decks & vertical walls
• Swimming pools, water tanks & planter boxes
• Basements, retaining walls & slab edges

Colour Accuracy Disclaimer: We have taken care to display the most accurate visuals of our products. However, we are not responsible for the colour accuracy of the device you are viewing our swatches on. These variations arise due to different computer monitors and devices (make, model and technology, as well as resolution, contrast and brightness control settings) in much the same way a scan will differ from an original image and a colour photocopy. Furthermore, coatings can exhibit variation in perceived colour depending on gloss level and application method. If you require a very specific colour match, please make your selection via actual swatches and colour boards available at our showroom.

Product Disclaimer: Ensure you read all product, technical and safety data sheets prior to application as liability falls on the applicator. All products must be applied in accordance with manufacturer’s recommended method.