Waterproofer

If you're looking for a reliable waterproofer for your home, look no further than Build4less.co.uk. We stock a wide range of waterproofing products from leading brands, so you can be sure to find the perfect solution for your needs. Whether you're looking to protect your floors from water damage or you need a waterproof coating for your walls, we have a product to suit you. For all your waterproofing needs, make Build4less.co.uk your first port of call.

12 products

Waterproofer | Waterproofing | Waterprofing Kit | Waterproof Membrane

Welcome to the Waterproofer category at Build4Less, where we specialise in a comprehensive range of waterproofing solutions to meet various needs and applications. Our products are sourced from reputable vendors like CALDER, BEAVA, JACKON, and ROOFTEC, ensuring quality and reliability in every purchase.

Flex High Build & Flex Primer

Our Flex High Build and Flex Primer options, offered by CALDER, are top-of-the-line waterproof roof coatings available in different weights and colours. These products are perfect for ensuring a durable, weather-resistant seal on roofs. They are especially useful for buildings in areas with heavy rainfall or extreme weather conditions.

Liquid Waterproof Membranes

MegaSeal by BEAVA

The MegaSeal Liquid Waterproof Membrane is a versatile product suitable for a range of surfaces. This membrane forms a seamless, protective layer, making it ideal for waterproofing areas prone to water ingress, such as basements, bathrooms, and balconies.

JACKON's Waterproof Sealing Kit

This all-in-one solution is perfect for both DIY enthusiasts and professional builders. It provides all necessary components for effective waterproofing in critical areas, ensuring a comprehensive and reliable seal.

Bitumen Mastic, Paint, and Primer

Our Bitumen Mastic, Paint, and Primer, provided by ROOFTEC, are excellent for heavy-duty waterproofing needs. These bitumen-based products are perfect for sealing, protecting, and repairing roofing and walls against moisture penetration.

Rubber Bitumen Emulsion

The Rubber Bitumen Emulsion is another versatile product, ideal for damp-proofing and waterproofing, especially in below-ground structures. Its elasticity and durability make it a popular choice for long-term protection.

Specialised Roofing Solutions

All Weather Roofing Compound & Solar Reflective Paint

Our All Weather Roofing Compound and Solar Reflective Paint, also from ROOFTEC, are designed for specific roofing needs. The All-Weather Compound offers robust protection in varying weather conditions, while the Solar Reflective Paint helps in reflecting UV rays, reducing heat build-up in buildings.

Benefits of Using Quality Waterproofers

  • Long-term protection: Waterproofer prevents leaks, damp and structural decay.
  • Energy efficiency: Solar-reflective options help reduce roof surface temperatures and cooling costs.
  • Versatility: Waterproofer is Suitable for flat and pitched roofs, balconies, basements, external walls and interior wet areas.
  • Easy application: Many products can be applied with a brush or roller, reducing labour time and costs.
  • Cost-effective maintenance: Extends the lifespan of roofing felt, concrete, timber and masonry.

Applications of Waterproofer

  • Roofing: Waterproofer is used in flat roofs, upstands, laps, joints and felt repairs.
  • Masonry & foundations: Waterproofer is used in flat  Exterior walls, retaining structures and below-ground damp proofing.
  • Bathrooms & wet rooms: Waterproofer is used in flat liquid membranes and sealing kits before tiling.
  • Balconies & terraces: Waterproofer is used in flat, Seamless liquid membranes for heavy traffic areas.
  • General repairs: Filling cracks, sealing penetrations and reinforcing vulnerable details.

Installation Tips

  • Prepare thoroughly: Clean and dry the surface; remove loose material.
  • Prime if needed: Apply the recommended primer to improve adhesion and coverage.
  • Apply in layers: Use the correct film thickness and allow proper curing between coats.
  • Detail first: Treat joints and penetrations before covering large areas.
  • Weather watch: Apply in dry conditions and follow the product’s temperature guidelines.

Why Choose Build4Less?

  • Curated range: All-purpose waterproofer with Bitumen coatings, liquid membranes, primers and reflective paints from trusted brands such as Rooftec, Calder, Beava.  
  • Trade expertise: Our team can help match the right product to your project.
  • Competitive pricing & UK delivery: High-quality waterproofing solutions delivered quickly to your site.
  • One-stop shop: Order complementary items, sealants, membranes and roofing accessories in a single checkout.
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