£20.99
In stock
9997 in stock
Protect floors, concrete slabs and building structures against rising damp and ground moisture with this high-quality 500 Gauge Damp Proof Membrane (DPM).
Manufactured from durable polythene, this 125 micron damp proof membrane creates an effective moisture barrier beneath concrete floors, screeds and ground-bearing floor systems, helping protect buildings against water ingress and moisture-related damage.
Supplied in a large 4m x 25m roll, each DPM provides approximately 100m² of coverage before allowing for overlaps, making it ideal for residential, commercial and general construction projects.
A reliable damp proof membrane is an important part of many ground-floor construction systems, helping prevent moisture from the ground passing into the building.
This membrane is manufactured to a thickness of 500 gauge / 125 micron / 0.125mm, providing a flexible and practical moisture barrier suitable for a wide range of building applications.
Its generous 4 metre width also helps reduce the number of joints required across larger floor areas.
Moisture rising from the ground can cause significant problems within buildings if an effective barrier is not installed.
This polythene damp proof membrane creates a protective layer between the ground and the floor construction, helping prevent ground moisture from reaching the concrete slab, screed, insulation and finished flooring above.
Correct installation can help reduce the risk of:
This 500 gauge DPM is suitable for a wide range of applications, including:
Each roll measures 4 metres wide by 25 metres long, providing approximately 100 square metres of membrane before allowing for overlaps and detailing.
The wide 4m format is particularly useful for larger floor areas because it can help reduce the number of separate joints required during installation.
This makes it a practical option for house extensions, garages, concrete floors, commercial premises and other larger construction projects.
Damp proof membrane thickness is commonly described using either gauge or microns.
For this product:
500 Gauge = 125 Micron = 0.125mm
Microns are commonly used as the modern measurement for polythene membrane thickness, while gauge remains a familiar measurement throughout the UK construction industry.
Including both measurements makes it easier to identify the correct DPM specification for your project.
This membrane is CE Certified and manufactured to EN 14909:2012 Type A, providing reassurance that it is designed for use as a damp proof membrane within appropriate building applications.
It provides watertightness greater than 2kPa and remains resistant to low temperatures down to approximately -25°C.
This makes it suitable for a wide variety of domestic, commercial and general construction projects requiring dependable moisture protection.
Manufactured from quality polythene, the membrane is lightweight, flexible and easy to position across large floor areas.
Its flexibility allows the DPM to be formed around corners and construction details while providing a continuous moisture-resistant layer when correctly lapped and sealed.
The material is also non-hazardous, making it a practical choice for everyday building and construction applications.
As well as being used as a damp proof membrane beneath floors and slabs, this versatile polythene sheeting can also be useful for temporary protection during construction.
Potential applications include:
For effective moisture protection, the membrane should be installed carefully to create a continuous barrier.
When installing:
Installation should always follow the relevant building specification and current building regulations.
A Damp Proof Membrane (DPM) and Damp Proof Course (DPC) both help protect buildings from moisture, but they are generally used in different areas.
A DPM is typically supplied as a large sheet membrane and installed beneath floors or concrete slabs.
A DPC is normally supplied in narrower rolls and incorporated into walls to help prevent moisture rising through the masonry.
Using the correct damp-proofing products together can help create a continuous barrier against ground moisture.
Choose this Damp Proof Membrane 4m x 25m – 500 Gauge / 125 Micron for a practical and cost-effective moisture barrier suitable for floors, slabs, extensions, garages and a wide range of construction projects.
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| Shipment method | Estimated delivery time | Shipment cost |
| Standard | 3-5 business days | As specified at checkout |
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