Cemproof Flex 1P – Flexible Cementitious Waterproofing Membrane

Looking for a durable waterproofing solution? Crommelin Cemproof Flex 1P is a premium cementitious waterproofing membrane that offers long-lasting protection for walls, basements, pools, and retaining walls. Whether for positive or negative side waterproofing, this flexible membrane ensures superior durability while allowing the substrate to breathe.

Formulated with high-quality cements, acrylic polymers, and well-graded aggregates, Cemproof Flex 1P delivers excellent adhesion, UV resistance, and crack-bridging performance. Plus, it’s easy to mix—just add water!

Why Choose Cemproof Flex 1P?

• Ideal for interior & exterior waterproofing – perfect for balconies, slab edges, tanks, and planter boxes.
• Resistant to hydrostatic pressure – prevents water ingress in below-ground structures.
• Flexible & crack-bridging – seals hairline cracks and prevents leaks.
• 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

Application & Preparation:

• Ensure the surface is clean, dry, and free from dust, grease, or contaminants.
• Mix with clean water according to the recommended ratio.
• Apply two coats with a brush, roller, or spray.
• Allow curing as per specifications before exposing to water.

Order today and get free shipping insurance! Protect your surfaces with  Crommelin Cemproof Flex 1P—the ultimate cementitious waterproofing solution for lasting durability.

Have questions? Need expert advice? Contact us today for recommendations on the best waterproofing solution for your project.

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.