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Damp Proof Course – 375mm wide x 30m length (packs of 3 rolls)

£34.99

In stock

9992 in stock

Description

Damp Proof Course (DPC) – 375mm Wide x 30m – Pack of 3 Rolls

Help protect brickwork, blockwork and masonry against rising damp and ground moisture with this 375mm Wide Damp Proof Course (DPC), supplied as a convenient pack of 3 x 30 metre rolls.

Designed for installation within masonry walls, this durable and flexible waterproof DPC creates a continuous moisture barrier that helps prevent ground moisture travelling upwards through bricks, blocks and mortar.

With a useful 375mm width, this damp proof course is ideal for wider masonry details, cavity wall applications, foundation details and construction projects where narrower DPC rolls do not provide sufficient coverage.

375mm Wide Damp Proof Course

A correctly installed Damp Proof Course is an essential part of protecting a building against rising moisture.

Installed horizontally within brick or block masonry, the DPC creates a waterproof barrier designed to interrupt the movement of moisture from the ground through porous building materials.

For customers searching for 375mm damp proof course, wide DPC roll, 30m damp proof course, or DPC membrane for brick and block walls, this three-roll pack provides a practical solution for domestic, commercial and trade building projects.

Product Details

  • Product type: Damp Proof Course (DPC)
  • Roll width: 375mm
  • Roll length: 30m
  • Pack quantity: 3 rolls
  • Total linear length: 90m across 3 rolls
  • Thickness: Approximately 0.4mm
  • Weight: Approximately 380g/m²
  • Surface: Serrated diamond-cut finish on top and bottom
  • Watertightness: Greater than 2kPa
  • Low-temperature resistance: Down to approximately -25°C
  • Fire classification: Class F
  • Durable and flexible construction
  • Alkali resistant
  • Non-hazardous
  • Suitable for brick and block masonry
  • Designed for horizontal anti-damp isolation

Helps Prevent Rising Damp

Rising damp occurs when moisture from the ground travels upwards through porous building materials such as bricks, blocks and mortar.

Without a suitable damp-proof barrier, moisture can eventually reach internal walls and finishes, potentially leading to damp patches and deterioration.

Installing a DPC within the masonry helps interrupt this upward movement of moisture.

A correctly installed damp proof course can help reduce the risk of:

  • Rising damp
  • Damp patches on walls
  • Moisture penetration
  • Mould growth
  • Mildew
  • Fungal residues
  • Damaged plaster
  • Peeling paint or wallpaper
  • Moisture-related deterioration of masonry

Wide 375mm DPC

At 375mm wide, this DPC provides considerably more coverage than standard narrow damp proof course rolls.

The increased width makes it particularly useful for:

  • Wider masonry details
  • Cavity wall applications
  • Foundation details
  • Wall junctions
  • Structural damp-proofing details
  • Specialist construction applications
  • Areas requiring additional membrane coverage

The material can also be cut where required to suit specific building details.

Pack of 3 x 30m Rolls

Each pack contains 3 individual rolls, with each roll measuring 375mm wide x 30m long.

This provides a total of 90 linear metres of damp proof course per pack.

The three-roll pack is particularly useful for:

  • House extensions
  • New-build projects
  • Garages
  • Workshops
  • Long wall runs
  • Multiple sections of masonry
  • Larger renovation projects
  • Trade construction work

Having three rolls available also provides additional material for overlaps, corners, junctions and other detailing.

Serrated Diamond-Cut Surface

The damp proof course features a serrated diamond-cut texture on both the upper and lower surfaces.

This textured finish is designed to improve grip within the mortar bed and help reduce movement while bricks or blocks are positioned during construction.

The textured surface provides several useful installation benefits:

  • Better grip within mortar
  • Improved installation stability
  • Reduced risk of the DPC slipping
  • Easier brick and block positioning
  • More secure placement within masonry

This makes it particularly suitable for permanent installation within brick and block construction.

Suitable for Brick & Block Walls

This DPC is designed for horizontal anti-damp isolation within brick and block masonry.

It can be incorporated into a wide variety of wall constructions to create a continuous barrier against rising moisture.

Typical applications include:

  • Brick walls
  • Concrete block walls
  • External walls
  • Internal masonry walls
  • Cavity walls
  • Extensions
  • Garages
  • Workshops
  • Garden buildings
  • New-build properties
  • Refurbishment projects

Durable & Flexible Construction

Damp proof course needs to provide long-term waterproof protection while remaining flexible enough to install around building details.

This DPC is designed to provide both qualities.

Its flexible construction makes the material straightforward to:

  • Roll out
  • Position
  • Cut
  • Form around corners
  • Install across wall junctions
  • Adapt to different masonry details

while retaining the durability required for permanent incorporation within the building.

Alkali Resistant

Mortar, concrete and other cement-based building materials are naturally alkaline.

Because a DPC remains permanently embedded within masonry, resistance to alkaline conditions is important for long-term performance.

This damp proof course is alkali resistant, helping it remain suitable for prolonged contact with mortar and masonry materials.

Watertight at Greater Than 2kPa

The membrane has a specified watertightness greater than 2kPa, helping it provide an effective barrier against moisture when installed correctly.

Maintaining continuity across the damp proof course is essential.

Particular care should be taken around:

  • Corners
  • Wall junctions
  • Door and window openings
  • Changes in level
  • Service penetrations
  • Overlapping sections

to ensure moisture cannot bypass the damp-proof barrier.

Low-Temperature Resistance to -25°C

This DPC is designed to remain resistant at temperatures down to approximately -25°C.

This helps the material retain its flexibility during cold-weather storage and construction conditions.

Ideal For

The 375mm Wide Damp Proof Course is suitable for a wide variety of construction projects, including:

  • New-build houses
  • House extensions
  • Garages
  • Workshops
  • Garden rooms
  • Outbuildings
  • Brick construction
  • Block construction
  • Cavity wall details
  • Foundation details
  • Property refurbishment
  • Masonry repairs
  • General building projects

DPC Installation

Correct installation is essential for creating an effective moisture barrier.

When installing:

  • Ensure the mortar bed is level and properly prepared
  • Lay the DPC flat without unnecessary folds or creases
  • Make sure the membrane covers the required wall width
  • Maintain continuity around corners and junctions
  • Allow suitable overlaps where separate sections meet
  • Avoid puncturing or damaging the membrane
  • Bed the DPC securely into the mortar
  • Connect adjoining damp-proofing systems correctly where required
  • Follow the project specification and applicable building requirements

Maintaining a continuous DPC is important because breaks or gaps may allow moisture to bypass the barrier.

DPC vs DPM – What’s the Difference?

A Damp Proof Course (DPC) and Damp Proof Membrane (DPM) both help protect buildings against moisture, but they are generally installed in different areas.

A DPC is normally installed within walls and masonry to stop moisture travelling upwards through bricks and blocks.

A DPM is usually supplied as a much larger sheet and installed beneath floors and concrete slabs.

In many buildings, the DPC and DPM are connected to create a continuous barrier against ground moisture.

Connect the DPC to the Floor DPM

Where the floor construction includes a Damp Proof Membrane, the wall DPC and floor DPM may need to be correctly connected.

Maintaining continuity between these damp-proofing systems helps prevent moisture finding an alternative route into the building.

Always follow the relevant construction detail and project specification when connecting DPC and DPM products.

Suitable for New Builds & Refurbishment

The 375mm Wide DPC is suitable for both new construction and appropriate refurbishment work.

It is particularly useful when:

  • Constructing new brick or block walls
  • Building an extension
  • Constructing a garage
  • Completing cavity wall details
  • Rebuilding damaged masonry
  • Improving existing damp-proofing
  • Carrying out foundation work
  • Completing property renovation

Why Choose 375mm Wide Damp Proof Course?

  • Wide 375mm Damp Proof Course
  • 30m length per roll
  • Supplied as a pack of 3 rolls
  • Total 90 linear metres per pack
  • Approximately 0.4mm thick
  • Approximately 380g/m²
  • Serrated diamond-cut surface on both sides
  • Helps prevent rising damp
  • Designed for brick and block masonry
  • Watertight at greater than 2kPa
  • Low-temperature resistance down to -25°C
  • Flexible and durable
  • Alkali resistant
  • Non-hazardous
  • Suitable for wider wall details
  • Ideal for domestic and trade construction
  • Suitable for new builds and refurbishment projects

Choose Damp Proof Course 375mm Wide x 30m – Pack of 3 Rolls for a durable, flexible and wide waterproof barrier designed to help protect brickwork, blockwork and masonry against rising damp and ground moisture.

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