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Discover Our Damp Proof Course & Membranes

Discover Our Damp Proof Course & Membranes

Protect your property from moisture damage with Trade Superstore's range of Damp Proof Courses (DPC) and Damp Proof Membranes (DPM). Essential for preventing water ingress, these products help safeguard walls, floors, and foundations from rising damp, preserving structural integrity and insulation.

  • Damp Proof Courses (DPC) are moisture-resistant barriers embedded within walls, typically near the base, to block rising damp from penetrating bricks and mortar. This layer prevents moisture from reaching higher areas of the structure, protecting against long-term damage.

  • Damp Proof Membranes (DPM) are sheets applied to floors and walls to stop water from seeping into interior spaces. Available in various sizes and thicknesses, these membranes create a robust barrier against moisture, helping to maintain a dry, insulated environment.

Choose the right DPC and DPM for your project and prevent costly repairs with our reliable damp proofing solutions.

What is Damp & What Causes it

What is Damp & What Causes it

Damp is a common issue in buildings that causes visible damage and can lead to structural problems if untreated. Signs of damp include:

  • Peeling wallpaper and bubbling paint
  • Tide marks or discolored patches on walls
  • Black mold and mildew
  • Damp or musty smells in rooms

Types of Damp:

  • Condensation: Caused by moisture from activities like cooking or showering. Occurs on cold surfaces, leading to damp patches and mold.
  • Penetrating Damp: From water entering through external holes or cracks. Can damage walls and interior finishes.
  • Rising Damp: Water from the ground seeps into walls and foundations, potentially causing serious issues like timber decay.

Identifying the correct type of damp is key to choosing an effective solution and protecting your home.

Damp-Proofing: How to Protect Your Home from Damp

Damp-Proofing: How to Protect Your Home from Damp

Damp-proofing is a key process for preventing moisture from damaging your property’s walls, floors, and structure. If you see peeling wallpaper, tide marks, bubbling paint, or black mold, it may be time for damp-proofing.

Common Damp-Proofing Solutions:

  • Damp-Proof Course (DPC): A waterproof barrier within walls that prevents rising damp.
  • Damp-Proof Membranes (DPM): Sheets installed in walls and floors to block moisture from entering.
  • Ventilation: Improves airflow to reduce condensation in areas like kitchens and bathrooms.
  • Repair External Damage: Fix cracks in walls, roofs, and gutters to block water entry.
  • Positive Input Ventilation (PIV): A unit that circulates dry air into the home, reducing condensation.

Why Act Quickly?

Untreated damp can damage decorative finishes, cause timber rot, raise heating costs, and worsen respiratory conditions. Identifying the source—whether condensation, rising damp, or penetrating damp—is essential for applying the right solution.

Damp Proof Course (DPC)

Damp Proof Course (DPC)

A Damp Proof Course (DPC) is a durable barrier, typically made from recycled polythene, that prevents moisture from rising through walls and causing damage. Installed 150mm above ground level, DPC plays a critical role in building durability by blocking capillary action, where water rises through porous masonry.

Key Features:

  • Material: Made from 100% recycled polythene, meeting BS 6515 standards and CE-marked for reliability.
  • Application: Works in brick, stone, and concrete walls, installed in mortar beds to prevent moisture travel.
  • Sizes & Customization: Available in various widths with cut-to-size options for specific projects.

Installation Tips:

  • Location: Place 150mm above ground in the mortar bed, not directly on brickwork.
  • Capillary Action: DPC stops water from "wicking" upward, protecting structures from moisture damage.
  • Longevity: Should last 30+ years, though poor installation may reduce effectiveness.
Damp Proof Membranes (DPM)

Damp Proof Membranes (DPM)

Damp Proof Membranes (DPM) offer reliable moisture protection for a range of applications, from building foundations to landscaping. Made from 100% recycled polythene and BBA-accredited, these membranes act as a robust barrier to prevent moisture from reaching concrete and masonry.

DPM Features:

  • Material & Standards: Made from recycled polythene, accredited to PIFA standards and CE-marked (EN 13967:2012).
  • Gauge Options: Available in 1000 (250 Micron), 1200 (300 Micron), and 2000 (500 Micron) gauges for different moisture resistance needs.
  • Applications: Ideal for use under concrete floors and foundations, as well as in garden and landscaping projects.

Why Use DPM?

  • Wide Surface Protection: Unlike DPC, DPM covers broad areas under concrete, blocking moisture from rising through floors.
  • Customizable Sizes: Available in various sizes and specifications; custom options are also offered.

Protect foundations and other large areas effectively with DPM, ensuring long-lasting resistance to moisture.

Rising damp is difficult to resolve and we would advise that you should at least consult with a qualified and trained professional before you attempt any remedial treatment. You may want to read more about what is involved in rising damp treatment.
A damp proof course is the installation of a barrier to prevent water ingress and rising damp problems in properties. Most buildings in the UK since the 1920’ have been constructed with an in-built damp proof course, typically a layer of some form of slate or damp proof membrane near the bottom of the structure.
For use in brick, stone and concrete walls Damplas DPC provides a robust damp proof barrier to prevent the rise of damp in structure walls. To comply with current building regulations we recommend building into the mortar bed approximately 150mm above the structure base.
Identifying the exact type of damp proofing you require can sometimes be difficult for those who are not professionally trained. Symptoms of conditions like penetrating damp, rising damp and condensation can look remarkably similar but all require different damp proofing techniques to solve.
Most people start to think about damp prcofing when symptoms of damp start to appear on their internal walls. Damp on walls causes aesthetic damage to paint, plaster,ccallpaper, skirting boards and other fixtures and fittings but it can also lead to more serious problems such as rot which can affect structural timbers.
Without the addition of damp proof coursing (DPC) and damp proof membranes (DPM), excess moisture and rising damp leads to deterioration of walls and foundations, as well as poor insulation, slip hazards and other problems.
Made from 100% recycled polythene material, our PIFA standard and BBA accredited damp proof membrane sheets come in a choice of three standard gauges: 1000 gauge (250 Micron), 1200 gauge (300 Micron) or 2000 gauge (500 Micron)
If you spot peeling wallpaper, tide marks on your wall, bubbling plaster or paint, black mould or discoloured patches on your walls or ceiling then the chances are your property needs some kind of damp proofing.

Top Quality Damp Proof Course & Membranes

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Explore our wide range of damp proof course & membranes

Find your perfect fit: damp proof course (DPC) or damp proof membrane (DPM). Discover more in our collections now!

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Our Brands of Damp Proof Course & Membrane

NDC Polipak

NDC Polipak's range of packaging and damp-proofing products includes high-quality polythene films, available in vibrant prints of up to 8 colours, and a variety of laminating options—ideal for protective packaging in the building industry.

For damp-proofing needs, the Damplas DPC provides a strong, recycled polythene barrier designed for use in brick, stone, and concrete walls, effectively preventing rising damp in compliance with British Building Regulations. Their Handi-Paks product line caters to project-specific requirements, offering everything from rubble sacks and tarpaulins to plasterboard tapes and dust sheets, all in convenient, retail-ready packaging.

At Trade Superstore Online, we’re pleased to offer a comprehensive selection of damp-proofing products that meet the highest standards in quality and performance. Our range includes Damp Proof Membranes (DPM), Damp Proof Courses (DPC), and Vapour Barriers, all crafted from 100% recycled polyethylene and CE-marked for reliability.

Damp Proof Membrane (DPM)
Our PIFA standard and BBA-accredited damp proof membrane sheets are available in three standard gauges:

  • 1000 gauge (250 Micron) – Meets the minimum UK Building Regulations for DPM.
  • 1200 gauge (300 Micron)
  • 2000 gauge (500 Micron)

Damplas DPM provides a robust moisture barrier ideal for use under concrete floors, protecting against damp in foundations and other applications (not suitable for hydrostatic pressure). CE-marked to EN

13967:2012

, these membranes ensure lasting protection.

 

Damp Proof Course (DPC)
Damplas DPC offers a durable barrier for brick, stone, and concrete walls, preventing rising damp and complying with BS

6515:1984

standards. This flexible, embossed course is installed into the mortar bed approximately 150mm above the structure base for optimal results. It’s available in a variety of sizes and can be custom cut to fit specific project needs.

 

Vapour Barrier
Damplas Vapour Barrier is a lightweight, waterproof sheet designed to block water vapor, reducing condensation and preventing mold. This 125-micron polyethylene sheet comes in convenient rolls (2.7m x 50m or 2.5m x 20m) and can be customized in size, color, and gauge upon request. CE-marked to EN 13984:2013, it provides flexible, dependable protection for floors and walls.

For specific sizes or requirements, please reach out to us at Trade Superstore Online to get the perfect damp-proofing solution for your project.

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