Description
Damp Proof Course (DPC) – 900mm Wide x 30m – Single Roll
Help protect walls and masonry against rising damp and ground moisture with this 900mm Wide Damp Proof Course (DPC), supplied in a generous 30 metre single roll.
Designed for installation within brickwork and blockwork, this flexible waterproof DPC creates a horizontal moisture barrier that helps prevent water travelling upwards through masonry and into the building.
With its extra-wide 900mm width, this DPC is particularly useful for wider wall constructions, specialist damp-proofing details and projects where standard narrow DPC rolls do not provide sufficient coverage.
Heavy Duty 900mm Damp Proof Course
A correctly installed Damp Proof Course forms an important part of protecting a building against rising moisture.
This DPC is designed to create a durable waterproof barrier within masonry construction, helping prevent ground moisture from passing upwards through bricks, blocks and mortar.
For customers searching for 900mm damp proof course, wide DPC roll, 30m damp proof course or DPC membrane for walls, this single roll provides a practical professional solution.
Product Details
- Product type: Damp Proof Course (DPC)
- Roll width: 900mm
- Roll length: 30m
- Quantity: Single roll
- Thickness: Approximately 0.4mm
- Weight: Approximately 380g/m²
- Surface: Serrated diamond-cut finish on both sides
- Watertightness: Greater than 2kPa
- Low-temperature resistance: Down to approximately -25°C
- Fire classification: Class F
- Flexible and durable
- Alkali resistant
- Non-hazardous
- Designed for use with brick and block masonry
- Suitable for horizontal damp-proofing applications
Helps Prevent Rising Damp
Rising damp occurs when moisture from the ground travels upwards through porous building materials such as brick, block and mortar.
Without an effective damp-proof barrier, this moisture can eventually enter internal walls and finishes.
Installing a suitable DPC within the masonry helps interrupt this upward movement and creates a waterproof barrier between the lower and upper sections of the wall.
A correctly installed DPC can help reduce the risk of:
- Rising damp
- Damp patches on walls
- Moisture penetration
- Mould growth
- Mildew
- Fungal residues
- Damage to plaster
- Damage to internal decoration
- Moisture-related deterioration of masonry
Extra Wide 900mm DPC
At 900mm wide, this is one of the widest DPC sizes in the Felt Products range.
The additional width makes it particularly useful for applications where narrower 100mm, 150mm or 225mm damp proof course rolls are not suitable.
Potential uses include:
- Wide masonry details
- Large wall sections
- Cavity and foundation details
- Specialist waterproofing applications
- Wider structural elements
- Construction junctions requiring greater coverage
The 900mm width provides greater flexibility when cutting or adapting the material to suit specific building details.
30m Single Roll
Each roll provides a full 30 metres of DPC, allowing long continuous sections to be installed with fewer joints.
Using longer continuous lengths can help simplify installation and reduce the number of overlaps required across longer wall runs.
The product is supplied as one 900mm x 30m roll, making it easy for customers to understand exactly how much material they are purchasing.
Serrated Diamond-Cut Surface
This damp proof course features a serrated diamond-cut finish on both the upper and lower surfaces.
The textured surface is designed to provide additional grip within the mortar bed and help prevent the DPC from slipping during installation.
This is particularly useful because smooth plastic membranes can move while bricks or blocks are being positioned above them.
The textured finish helps provide:
- Better mortar grip
- Improved stability during installation
- Reduced risk of slipping
- Easier positioning within masonry
- A more secure finished DPC detail
Suitable for Brick & Block Walls
This DPC is designed for use as horizontal anti-damp isolation in brick and block construction.
It can be incorporated into masonry walls to help create a continuous barrier against ground moisture.
Typical applications include:
- Brick walls
- Block walls
- External walls
- Internal masonry walls
- Extensions
- Garages
- Garden buildings
- New-build construction
- Renovation projects
Durable & Flexible Construction
A good damp proof course needs to remain durable while also being flexible enough to install across masonry details.
This DPC is designed to provide both qualities.
Its flexible construction makes it easier to:
- Roll out
- Position
- Cut
- Form around details
- Install across long wall sections
while maintaining the durability required for permanent incorporation within a building.
Alkali Resistant
Mortar and other cement-based building materials are alkaline, so materials installed permanently within masonry need to tolerate this environment.
This DPC is specified as alkali resistant, helping ensure it remains suitable for long-term contact with mortar and masonry materials.
Watertight at Greater Than 2kPa
The product has a specified watertightness greater than 2kPa, providing an effective barrier against moisture when correctly installed.
For the DPC to work effectively, continuity is essential.
Care should be taken around:
- Joints
- Corners
- Wall junctions
- Openings
- Service penetrations
- Changes in wall level
to ensure the moisture barrier is not unnecessarily interrupted.
Resistant to Low Temperatures
This DPC is specified as resistant to low temperatures down to approximately -25°C.
This helps maintain flexibility and durability during cold-weather storage and building conditions.
Ideal For
The 900mm Wide Damp Proof Course is suitable for a variety of domestic and commercial construction projects, including:
- New-build houses
- House extensions
- Garages
- Workshops
- Garden buildings
- Outbuildings
- Brick construction
- Block construction
- Property refurbishment
- Masonry repairs
- Specialist damp-proofing details
- General building projects
DPC Installation
For effective damp protection, the DPC should be incorporated correctly into the masonry construction.
General installation considerations include:
- Ensure the mortar bed is even and properly prepared
- Lay the DPC flat without unnecessary folds
- Make sure the membrane extends across the required wall width
- Maintain continuity around corners and junctions
- Allow appropriate overlaps where separate lengths meet
- Avoid puncturing or damaging the DPC
- Bed the material securely into the mortar
- Ensure adjoining damp-proofing systems are correctly connected where required
Installation should always follow the project specification and relevant building requirements.
DPC vs DPM – What’s the Difference?
Although DPC and DPM are both damp-proofing products, they are normally used in different parts of a building.
A Damp Proof Course (DPC) is generally installed within walls and masonry to prevent moisture travelling upwards through brick or blockwork.
A Damp Proof Membrane (DPM) is normally supplied in much wider sheets and installed beneath floors and concrete slabs.
In many building projects, the two systems are connected to create a continuous barrier against ground moisture.
Connect with the Damp Proof Membrane
Where a building also incorporates a floor Damp Proof Membrane, the DPM and wall DPC may need to be correctly linked together.
Creating continuity between the floor membrane and wall damp proof course helps prevent gaps where moisture could bypass the damp-proofing system.
Always follow the relevant construction detail and building specification when making these connections.
Ideal for New Construction & Refurbishment
This wide DPC can be used in both new construction and suitable refurbishment projects.
It is particularly useful for:
- Building new masonry walls
- Constructing extensions
- Garage construction
- Rebuilding damaged masonry
- Improving damp-proofing details
- General building renovation
- Larger damp-proofing projects
Why Choose This 900mm Damp Proof Course?
- Extra-wide 900mm DPC
- Full 30m roll
- Supplied as a single roll
- 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
- Helps prevent mould, mildew and moisture damage
- Suitable for domestic and commercial construction
- Ideal for wider wall and specialist damp-proofing applications
Choose Damp Proof Course 900mm Wide x 30m – Single Roll for a wide, durable and flexible waterproof barrier designed to help protect masonry walls against rising damp and ground moisture.
