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300 Micron Damp Proof Membrane – 4m Wide Black Polythene DPM

Heavy-duty 300 Micron Damp Proof Membrane (DPM) manufactured from tough black polythene and designed for building, construction, flooring and renovation applications.

Supplied at a generous 4 metre width and available in a choice of lengths, this 1200 gauge polythene sheeting provides excellent coverage for both small DIY projects and larger construction jobs.

When correctly specified and installed, the membrane provides an effective barrier against ground moisture, making it suitable for use beneath concrete floors, slabs and other appropriate floor constructions.

Key Features

300 Micron Thickness – Heavy-duty polythene membrane for construction applications
1200 Gauge – Strong and durable specification
4 Metres Wide – Excellent coverage for larger floor areas
Black Polythene – Tough yet flexible for easier handling and installation
Damp Proof Membrane – Helps create a barrier against ground moisture when correctly installed
Multiple Lengths Available – Select the quantity best suited to your project
Reduced Number of Joins – Wide 4m format helps minimise separate sheets and joints
Trade & DIY Suitable – Ideal for builders, contractors, property developers and home improvement projects
Easy to Handle – May be supplied folded for convenient transportation and storage
Versatile Application – Suitable for a wide variety of construction and renovation projects

Typical Applications

This heavy-duty DPM is suitable for many building and construction applications, including:

Beneath concrete floors
Concrete floor slabs
New-build construction
House extensions
Garages and workshops
Sheds and outbuildings
Property renovations
Refurbishment projects
Flooring projects
General building work
Heavy-duty protective sheeting
General construction applications

Heavy-Duty 300 Micron / 1200 Gauge

With a thickness of 300 microns (1200 gauge), this DPM provides a substantial yet flexible sheet that is easy to position during installation.

The durable black polythene construction makes it suitable for demanding building environments while remaining manageable when laying across larger areas.

Full 4 Metre Width

Every length option is supplied at a full 4 metre width, providing excellent coverage across large floor areas.

The wider format can help reduce the number of individual sheets and joins required compared with narrower membranes, making installation more straightforward.

For easier transportation and storage, the membrane may be supplied folded. Simply unfold the sheet to achieve its full 4m width.

Choice of Lengths

Choose the required length from the available options in the listing.

This allows you to purchase a quantity suitable for your individual project, whether you're completing a smaller DIY job or working on a larger construction project.

Please calculate the amount required before ordering and remember to allow sufficient material for overlaps, joints and installation requirements.

Product Specification

Product: Damp Proof Membrane (DPM)
Material: Polythene
Colour: Black
Thickness: 300 Micron
Gauge: 1200 Gauge
Width: 4 Metres
Length: Various lengths available
Type: Heavy-Duty Polythene Sheeting
Condition: Brand New

Suitable for Trade & DIY

A practical choice for builders, contractors, tradespeople, property developers and DIY users, this 4m wide membrane provides a convenient solution for projects requiring heavy-duty black polythene DPM.

Important Information

Please select your required length before ordering. All length options are supplied at 4 metres wide.

Always check that the dimensions and specification are appropriate for your intended application. Where the membrane forms part of a building or damp-proofing system, it should be correctly specified and installed in accordance with the relevant requirements for the project.