Waterproof Blue Liquid DPM (5KG) - Brush applied Liquid DPM

Name: Waterproof Blue Liquid DPM (5KG) - Brush applied Liquid DPM
Brand: Intelligent Membranes
SKU: IM/00WPBB5
Price: 69.99 GBP
Availability: InStock

£69.99 GBP

excl. VAT

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💙 Waterproof Blue – 5KG

Precision Waterproofing. Brush Applied. Built for Structural Protection.

Waterproof Blue 5KG is the brush-grade version of our high-performance polymer waterproofing membrane — designed for controlled application on foundations, floors, and critical detailing areas like window reveals.

This is structural waterproofing made simple. It blocks water, stops vapour migration, resists UV degradation, and cures to form a seamless, flexible membrane that won’t crack or disintegrate over time.

Perfect where accuracy matters and rollers aren’t practical.

🏗 Ideal For

Foundation walls
Concrete floors & slabs
Basement detailing
Window reveal waterproofing
Upstands and junctions
Tight or intricate areas requiring brush control

Especially suited for detailing around openings where water ingress risk is highest.

🛠 Application

Apply using a paintbrush
Ideal for precision work and controlled coverage
Creates a seamless, joint-free membrane

No corner reinforcement required — saving installation time.

🔵 Why Choose the 5KG Brush Version?

🎯 Detail-Friendly Application – Perfect for reveals and junctions
☀ UV Resistant – Suitable for exposed areas
💧 Vapour Blocking Technology – Protects from moisture migration
🔧 High Crack-Bridging Properties – Handles substrate movement
🧱 Strong Adhesion to Concrete & Cement Surfaces
⏳ Flexible, Durable Finish – No brittle failure over time

🧪 Techy Corner (For the Specifiers)

Waterproof Blue is a polymer-based, liquid-applied waterproof membrane that cures into a flexible elastomeric barrier.

Designed for vertical and horizontal structural applications
High adhesion to cementitious substrates
Crack-bridging performance
Seamless monolithic membrane formation
Maintains elasticity after curing

Once applied and cured, it forms a continuous waterproof layer protecting structural elements from water ingress, vapour penetration, and environmental degradation.

Related Guides

Helpful guides related to this product:

Quality assurance: Download the free Installation & QA Record sign-off sheet (IM-QA-09) for this product.

Details
Uses
Technical Data
Data Sheets
FAQ

Dries to a flexible membrane solution with high crack bridging properties
Application with roller or paintbrush
UV resistant
no corner reinforcements required upon application.

Suitable Substrates

Waterproof Blue is the ultimate replacement for traditional plastic membranes like DPCs and DPMs. Designed for superior waterproofing, it can be applied to any area where you’d typically use plastic membranes — such as on top of block and beam floors and the upstands of kicker blocks—creating a seamless, airtight, and watertight barrier for your project. This advanced, VOC-free, water-based solution can be effortlessly applied with a roller or paintbrush, ensuring quick and easy installation. Plus, it provides added protection
against radon, enhancing the safety and durability of your build.

Application

STEP 1 – Fill the joints between the surface, and the draining and tubes with a paintable waterproof sealant. When these joints are < 5mm, enlarge these
before applying the sealant.
STEP 2 – Apply the Waterproof Blue, waterproof paint membrane with a longhaired roller in two coats. Coverage in 2 layers is minimal 800gr/m2, or 2 layers of approx. 400 gr/m2 depending on the roughness of the substrate. Second layer to be applied crosswise on the first layer, when the first layer has dried out. Make sure to check for complete coverage.
STEP 3 –When the second layer of Waterproof Blue, water proof paint membrane has dried out (24 to 48 hours after application), apply tiling as finishing. Suitable tiling glues include: cement glue class C2 or dispersion glue class D2TE, according EN12004

Product Collection:Waterproof Blue
Size:5kg

Waterproof Blue Liquid DPM Brush - Technical Data Sheet (TDS)

Waterproof Blue Liquid DPM Brush - Install Guide

Waterproof Blue Liquid DPM Brush - Safety Data Sheet (SDS)

3D Detail Drawings - Booklet Set One

3D Detail Drawings - Booklet Set Two

3D Detail Drawings - Booklet Set Three

All 3D Detail Drawings

At Intelligent Membranes, we help architects, contractors, retrofitters and self-builders achieve airtightness and waterproofing targets with liquid-applied systems. Our flagship airtight system, Passive Purple®, is airtight at all times yet breathable when the building fabric needs to release vapour — we call this intelligent breathability.

Shipping & returns summary

We, at Intelligent Membranes, would like you to be 100% satisfied with your purchase and our service. In the unfortunate event of any item being unsuitable or wrong, please read the following for advice on returning goods to us.

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For architects and specifiers

How to specify this product

The NBS clauses and Uniclass codes this product is specified under, with clause wording you can paste straight into your specification.

NBS clauses

J30/130Cold-applied damp-proofing

View on NBS Source Get specification support

Clause wording

COLD-APPLIED DAMP-PROOFING – LIQUID DPM
Manufacturer: Intelligent Membranes Ltd, Cambridge. Tel 01223 208174. intelligentmembranes.com
Product reference: Waterproof Blue liquid-applied damp-proof membrane, water-based and VOC-free.
Use: Liquid DPM/DPC to block and beam floors, slabs and kicker upstands.
Properties: Forms a continuous airtight and watertight barrier.
Installation: In accordance with the manufacturer's current technical data sheet and installation guide.

Check against the current technical data sheet before issue. Certificates are in the Downloads tab.

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