Check local branch stock
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Permavent Leto Breathable Membrane (175 gsm) 1 x 50m
Permavent LETO 175 Breather Membrane is a breathable roofing underlay designed for pitched roof applications. Manufactured by Permavent, this membrane allows air and moisture vapour to pass through... -
Cromar TV3P/50 Vent 3 Pro Breathable Membrane 1 x 50m
Cromar Vent 3 Pro is a triple layer fabric, high-performance breather membrane. Made from high tensile spun-bonded polypropylene layers, around a microporous polypropylene film. Designed for use in a... -
Cromar Vent 3 Air Permeable Breather Membrane 165g 1 x 50m (TV3/50AIR)
A heavyweight high performance breathable membrane suitable for cold and warm roof applications, providing huge benefits over traditional roof underlays. -
Damp Proof Course (DPC) Roll Polythene 337.5mm x 30m
Polythene Damp Proof Course comes in a 30m roll and is available in a range of widths allowing you to get the job done. It is suitable for preventing walls made from brick, stone and concrete in... -
Damp Proof Course (DPC) Roll Polythene 900mm x 30m
Polythene Damp Proof Course comes in a 30m roll and is available in a range of widths allowing you to get the job done. It is suitable for preventing walls made from brick, stone and concrete in... -
Damp Proof Membrane 250mu Blue PIFA Approved 4 x 25m
Standard Damp Proof Membrane BBA Approved. Plastic sheetused to prevent dampness from occurring through capillary action. Please note: Timber and stone are natural materials, and as such, variation... -
Damp Proof Membrane 500mu Black PIFA Approved 4m x 12.5m
Standard Damp Proof Membrane BBA Approved. Plastic sheetused to prevent dampness from occurring through capillary action. Please note: Timber and stone are natural materials, and as such, variation... -
Damp Proof Membrane Blue 300mu 4 x 25m
Standard Damp Proof Membrane BBA Approved. Plastic sheetused to prevent dampness from occurring through capillary action. Please note: Timber and stone are natural materials, and as such, variation... -
Mapei Mapeguard Um 35 30Mt
Mapeguard UM 35 is the ideal solution to solve the problems of the subfloors, guaranteeing a safe laying of ceramics and stone material. -
Mapei Rapid S1 Quick Setting Floor Tile Adhesive Grey 20kg
Mapei Rapid S1 Adhesive Grey 20kg is a high-performance, rapid-setting flexible tile adhesive designed for professional wall and floor tiling projects. Suitable for internal and external use, it... -
Mapei Rapid S1 Quick Setting Floor Tile Adhesive White 20kg
Mapei Rapid S1 Adhesive White 20kg is a high-performance, rapid-setting flexible tile adhesive designed for professional wall and floor tiling projects. Suitable for internal and external use, it... -
Mapei Super Flexible Tile Adhesive Grey 20kg
Mapei Super Flexible Tile Adhesive Grey 20kg is a high-performance, cement-based tile adhesive designed for fixing ceramic, porcelain, mosaic and selected natural stone tiles to walls and floors. -
Mapei Super Flexible Tile Adhesive White 20kg
Mapei Super Flexible Tile Adhesive White 20kg is a high-performance, cement-based tile adhesive designed for fixing ceramic, porcelain, mosaic and selected natural stone tiles to walls and floors. -
Permavent Apex Air Vapour Permeable Membrane (Taped) 1 x 50m
Permavent APEX is a three-layer air open and vapour permeable membrane designed for use in pitched roofing and walling applications. It provides condensation control by allowing air and moisture... -
Permavent Apex Air Vapour Permeable Membrane (Untaped) 1 x 50m
Permavent APEX is a three-layer air open and vapour permeable membrane designed for pitched roofing and walling applications. It provides effective condensation control by allowing air and moisture... -
Permavent Apex Air Vapour Permeable Membrane (Untaped) 1.5 x 50m
Permavent APEX is a three-layer air open and vapour permeable membrane designed for pitched roofing and walling applications. It provides effective condensation control by allowing air and moisture... -
Permavent Leto Breathable Membrane (145 gsm) 1.5 x 50m
Permavent LETO 145 Breather Membrane is a breathable, air and vapour permeable underlay designed for pitched roofing applications. Manufactured by Permavent, this membrane allows moisture vapour to... -
Permavent Leto Breathable Membrane (175 gsm) 1.5 x 50m
Permavent LETO 175 Breather Membrane is a breathable, air and vapour permeable underlay designed for pitched roof applications. Manufactured by Permavent, this membrane allows air and moisture vapour... -
Wykamol CM3 Dampstop Mesh Membrane 1 x 10m x 2.8mm (10m2)
CM3 Cavity Drain Mesh Membrane is a 3 mm studded membrane incorporating a tough HDPE mesh lathing welded to the front face, allowing the direct application of various plaster finishes, adhesive... -
Wykamol CM3 Dampstop Mesh Membrane 2 x 20m x 2.8mm (40m2)
CM3 Cavity Drain Mesh Membrane is a 3 mm studded membrane incorporating a tough HDPE mesh lathing welded to the front face, allowing the direct application of various plaster finishes, adhesive... -
Wykamol CM8 Cavity Drain Membrane Clear 2.05 x 20m x 8mm
Wykamol CM8 Waterproofing Membrane is for use on walls, floors, vaults and tunnels with minimal surface preparation required. Also suitable for external foundation waterproofing and internal... -
Wykamol CM8 Cavity Drain Mesh Membrane 2 x 10m x 8mm
CM8 Mesh Membrane is a versatile membrane which incorporates a tough HDPE mesh lathing welded to the front face to allow the direct application of various plaster finishes or adhesive ‘dabs’ and... -
Wykamol Corner Strip Tape 20m x 150mm
Wykamol Corner Strip Tape is used to seal membranes at walls and floors and to fix perimeter drainage channels in place. Wykamol Corner Tape is a 150 mm wide tape with many uses, but most commonly... -
Wykamol HydraDry No More Damp Universal Mortar 25kg
HydraDry Universal Mortar is a single-component, thixotropic, fibre-reinforced, polymer-modified cementitious mortar. Use as part of the HydraDry Tanking System. This HydraDry product cures to...
Damp Proofing
Damp proof products such as damp proof membrane and damp proof course are an integral part of many construction and landscaping projects.
What is damp proofing?
Damp proofing is a method of controlling moisture and preventing it from moving between walls and floors.
A damp proof course is designed to be waterproof and usually positioned close to the ground, within the wall, to prevent rising damp. It is a must when building property foundations. The damp proof course will help prevent moisture from rising through the structure, protecting it from damp and helping to prolong its lifespan. A good damp course will prevent the need to repair any excessive damage that damp could cause.
At Howarth Timber & Building Supplies, we offer several types of Damp Proofing, including:
Plastic DPC
Plastic Damp Proof Course has high compressive strength and a long life expectancy. Its purpose is to act as a barrier to prevent damp spreading.
High-Performance DPC
High-Performance Damp Proof Course is thinner than traditional damp-proof courses, however, this doesn’t compromise on performance. This type of DPC can also offer fire resistance.
Insulated DPC
Insulated Damp Proof Course minimises cold bridges (sometimes referred to as thermal bridges) that can occur when there is a gap in insulation.
Ventilation
Ventilation is a crucial part of any home, as allowing air to move freely helps to prevent moisture build up and therefore damp. Ventilation helps homes with existing damp problems caused by large amounts of condensation, including shower areas. Air bricks are a good option for ventilating areas between cavity walls and suspended floors.
Expansion Joints
Expansion Joints are installed between brickwork and blocks and designed to handle movement such as from heat related expansion and contraction of building materials. The Expansion Joints purpose is to stop moisture from penetrating the building, preventing the creation and spread of damp.
Remedial Solutions
Remedial Solutions are products applied to surfaces including walls, floors, and ceilings to remedy existing damp problems such as those caused by condensation.
For expert advice and guidance on the best damp proofing for your property, please contact your friendly local Howarth branch.
How to Guides
How to Prevent Condensation on Windows
Learn how to stop condensation on windows with simple, effective methods. From adjusting indoor humidity to improving airflow, find out how to keep your windows clear and protect your home from moisture damage.