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Platon PB2 Mesh Damp Proof Membrane is a high-performance, 2mm stud polypropylene cavity membrane specifically developed for damp proofing above-ground walls affected by rising damp, penetrating damp, or salt contamination.
This membrane is fixed to walls using Platon Plaster Plugs and is designed to be finished with plaster, render, or plasterboard, thanks to its HDPE mesh surface. Available in various roll sizes from 2.5M² to 40M², Platon PB2 Mesh Membrane offers a versatile solution for a range of applications.
Unlike traditional wet or liquid-applied tanking methods, this membrane allows for immediate workability post-installation, significantly reducing project downtime and accelerating return-to-use time for treated walls.
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✔️ High-performance polypropylene membrane designed for damp proofing walls affected by rising damp or salt contamination.
✔️ HDPE mesh surface allows for direct plastering, rendering, or fixing plasterboard, providing versatile finishing options.
✔️ Allows immediate workability post-installation, reducing project downtime and accelerating return-to-use for treated walls.
✔️ Lightweight and flexible, easily conforms to irregular surfaces and corners, ideal for complex or older structures.
✔️ Resistant to moisture, salts, and contaminants, ensuring long-term durability and effective damp-proofing performance.
Platon PB2 Mesh Damp Proof Membrane is an advanced, high-quality solution designed to address the challenges of damp proofing above-ground walls in both residential and commercial environments. Constructed from durable polypropylene, this membrane features a stud height of approximately 2mm and a total construction height of 2.5mm, forming an effective cavity that allows moisture to drain away from the wall. This design not only prevents dampness and moisture ingress but also provides a dry, stable surface suitable for a variety of finishing options, including direct plastering, rendering, or fixing plasterboard using adhesive dabs. The membrane’s HDPE mesh surface enhances adhesion for these finishes, offering a reliable 'key' that facilitates a smooth and secure application.
The technical specifications of Platon PB2 Mesh Membrane reflect its superior quality and performance. With a nominal sheet thickness of 0.5mm and a unit weight of 0.505 kg/m², the membrane is lightweight yet robust, providing excellent coverage and protection without adding significant weight to the structure. Its polypropylene construction ensures high resistance to chemicals, salts, and other contaminants, making it particularly effective in environments where moisture and salt contamination are prevalent. The membrane can withstand working temperatures up to +60°C, with a softening temperature of +160°C, demonstrating its resilience in varying environmental conditions. Additionally, its linear coefficient of thermal expansion of 0.18mm/m°C and a water vapour resistance equivalent to a 250M air layer underline its effectiveness in maintaining a dry and habitable environment.
Unlike conventional tanking methods, which require extensive surface preparation and long drying times, Platon PB2 Mesh Membrane allows for immediate use after installation. This feature is particularly advantageous in projects where quick turnaround is essential. The membrane’s thin profile, featuring a 2mm stud height, ensures minimal intrusion into living spaces while providing effective damp-proofing. Its flexibility allows it to be easily shaped around windows, doors, and corners, making it ideal for complex or irregular surfaces often found in older buildings, barn conversions, and historical restorations. Furthermore, its ability to be applied directly over retained sound cement render or stonework reduces the need for extensive substrate preparation, preserving the integrity of the existing structure.
The installation process of Platon PB2 Mesh Membrane is straightforward and efficient. The membrane is fixed to the substrate using Platon Plaster Plugs, with the option to use Platon Plaster Plug Seals or Newton 801 Sealing Mastic to achieve a damp-proof seal around the plug head. For substrates of lower quality, such as cob walls, Platinum Cob Plugs are recommended to ensure a secure installation.
The membrane is compatible with other Platon Membranes, making it versatile for various damp-proofing applications, including lining window and door reveals where minimising intrusion into openings is crucial. It is robust yet pliable, easily conforming to internal and external corners, providing a comprehensive and reliable damp-proofing solution. Additionally, when laying new solid floors, the membrane can be applied to walls first, with the floor damp-proof membrane (DPM) lapped up in front of the Platon Membrane, sealed as required, and trimmed flush with the finished floor.
Platon PB2 Mesh Membrane is designed for internal use only and is particularly suitable for use in areas where traditional damp-proofing methods may fail, such as contaminated chimney breasts or after a failed chemical damp-proof course. Its resistance to moisture, salts, and other contaminants ensures long-term durability and reliability, making it an excellent choice for a wide range of damp-proofing needs.
Immediate Workability: The Platon PB2 Mesh Membrane allows for immediate workability post-installation, eliminating the need for drying or curing times. This rapid return to use reduces downtime and accelerates project completion, making it ideal for time-sensitive damp-proofing projects.
Effective Damp Proofing: The membrane provides robust protection against rising damp, penetrating damp, and salt contamination. Its studded design creates a cavity that facilitates moisture drainage, maintaining a dry environment and preventing further moisture ingress.
Versatile Finishing Options: The HDPE mesh surface offers a strong 'key' for a variety of finishing options, including direct plastering, rendering, or attaching plasterboard using adhesive dabs. This versatility makes it suitable for a wide range of aesthetic and functional requirements.
Minimal Preparation and Structural Impact: The membrane requires minimal wall surface preparation and causes little to no damage to the existing structure. It can be applied directly over retained sound cement render or stonework, preserving the integrity of older or historically significant buildings.
Resistance to Moisture, Salts, and Contaminants: Constructed from polypropylene, Platon PB2 Mesh Membrane is highly resistant to moisture, salts, roots, and other contaminants. This durability ensures long-term performance and reliability in challenging environments where other methods may fail.
Ease of Installation and Flexibility: The membrane is easy to cut and shape, allowing for precise installation around windows, doors, and other structural features. It can be easily folded around corners and irregular surfaces, providing a tailored damp-proofing solution for any project.
Above-Ground Damp Proofing: Platon PB2 Mesh Membrane is ideal for damp proofing above-ground walls, providing effective protection against rising damp and penetrating damp in both new builds and existing structures. It is particularly effective in scenarios where traditional methods are insufficient or impractical.
Barn and Mill Conversions: The membrane is highly suitable for barn and mill conversions, where walls are often thick and constructed from random stone or brick. The thin profile and flexible nature of the membrane allow it to adapt to uneven surfaces, providing reliable damp-proofing without compromising the building's aesthetics.
Contaminated Chimney Breasts: In older properties, chimney breasts can suffer from salt contamination and damp issues. Platon PB2 Mesh Membrane provides an effective solution by preventing moisture ingress and allowing salts to migrate away from the surface, maintaining a dry and stable finish.
Listed Buildings and Historical Restorations: The membrane’s ability to be applied over retained sound render or stonework, with minimal impact on the existing structure, makes it ideal for use in listed buildings and historical restorations where maintaining the building's character and integrity is paramount.
Post-Chemical Damp Proof Courses: Platon PB2 Mesh Membrane is particularly useful where chemical damp-proof courses have been ineffective or are unsuitable due to the substrate's nature. It provides an additional layer of protection, ensuring that the structure remains dry and habitable.
Internal Use with Other Membranes: The membrane is suitable for internal use only and can be combined with other Platon Membranes to provide a comprehensive damp-proofing solution. It is particularly effective for lining window and door reveals, where minimising intrusion into openings is essential for preserving functionality and aesthetics.
Platon PB2 Mesh Damp Proof Membrane offers a robust, flexible, and reliable solution for damp proofing above-ground walls, ensuring a dry, habitable environment in areas previously affected by moisture ingress.
Its innovative design, combined with ease of installation and compatibility with a range of products, makes it an essential choice for professionals seeking an effective and long-lasting damp-proofing solution.
Platon PB2 Mesh Membrane is specifically designed for damp-proofing applications above ground level. It is ideal for use on walls affected by rising damp, penetrating damp, or salt contamination.
The membrane can be applied to various substrates, including brickwork, blockwork, stone, and retained sound cement render. However, it is not suitable for floors or use below ground level. Prior to installation, the substrate must be sound and stable, free from loose or deteriorating materials such as plaster, render, or screed.
These materials should be removed, and the surface should be levelled using a suitable repair mortar, such as Platinum Fillet Seal Mortar or a 3:1 sand-cement mix incorporating Wykamol Renderproof Waterproofing Additive.
All new works should be allowed to dry thoroughly before fixing the Platon PB2 Mesh Membrane.
Proper surface preparation is crucial for achieving a successful installation of Platon PB2 Mesh Membrane.
Begin by removing any unsound plaster, render, or screed from the wall surface. The substrate should be clean, dry, and free from dust, oil, grease, or any other contaminants that could affect adhesion.
If mould or masonry fungi are present on the walls, remove the surface contamination by brushing and then apply Lignum Pro M50 in accordance with the relevant Technical Data Sheet.
In cases where dry rot (Serpula Lacrymans) is detected, a detailed assessment should be conducted before proceeding, and advice should be sought from the Platinum Chemicals Technical Department.
Above ground level, it is recommended to address any sources of moisture at the source, such as by installing a Damp Proof Course (DPC) using products like DampSolve DPC Cream, before applying the membrane. This proactive step helps reduce potential damage to masonry and timber.
To install the Platon PB2 Mesh Membrane, position the membrane with the studs facing the wall.
Fixing is achieved using Platon Plaster Plugs. Start by drilling a hole through the centre of the stud and into the substrate. Care should be taken during drilling to prevent excessive masonry dust from falling behind the cavity drain membrane.
Insert the Platon Plaster Plugs into the holes and drive them home using a rubber or wooden mallet. For added damp-proofing, Platon Plaster Plug Seals or Newton 801 Sealing Mastic can be used around the plug head.
The spacing between plug fixings should not exceed 250mm, arranged in a regular ‘diamond’ pattern to ensure a tight and secure fit to the wall. Depending on the finish, the spacing may vary.
For sealing, butt joints in the membrane should be oversealed with Platinum Mesh Tape. The membrane should terminate at solid floor and ceiling junctions to ensure a continuous damp-proof barrier.
When installing Platon PB2 Mesh Membrane, special care should be taken when running the membrane around internal and external corners.
Ensure that the sheet is fixed tightly to the angle to create well-defined edges, which are essential for subsequent plastering or finishing works. The membrane should not be used below ground level or on floors.
Ensure atmospheric moisture levels are below 70% relative humidity (RH) during application, and impermeable floor finishes should not be installed until the screed moisture content is below 75% RH.
Platon PB2 Mesh Membrane can be finished with either a plaster or plasterboard finish. For a plaster finish, apply the membrane in accordance with standard plastering techniques (BS 5492:1990) using a proprietary lightweight plaster such as Tarmac Whitewall High Impact Plaster, or a sand and cement render mix (6:1 with SBR Bonding Agent or 6:1:1 with hydrated lime).
A minimum of two coats should be applied. The initial scratch coat should be well worked into the mesh facing of the membrane to a minimum thickness of 6mm, allowing it to cure for 7-10 days before applying subsequent coats. The total thickness of the render or plaster should not exceed 15mm.
For a plasterboard finish, the board can be bonded to the membrane using standard adhesive dabs or Plasterboard PU Adhesive Foam. Apply the adhesive over the heads of the fixing plugs and ensure that 50% of the membrane area is covered, establishing direct contact between the plasterboard and masonry substrate.
After the plastered, dry-lined, or rendered surface has dried, it can be painted or wallpapered using traditional materials and methods without delay.
Plasterboard fixed in this way can be skimmed the next day and painted or wallpapered a few days after that, with significantly reduced drying times compared to wet systems.
Once installed, Platon PB2 Mesh Membrane provides a dry, warm, and habitable living space in areas previously affected by chronic damp conditions. However, in areas lacking natural ventilation, adequate means of condensation control should be provided, especially in wet areas such as kitchens and bathrooms.
Installing an effective mechanical ventilation system, such as Nuaire Extract Fans, is recommended to manage condensation and maintain a healthy indoor environment.
For further advice on aftercare and condensation control, please consult the Platinum Chemicals Technical Department.
Platon PB2 Mesh Membrane should be stored in an upright position, under cover, and away from high temperatures and open flames.
Proper storage will ensure that the membrane maintains its quality and performance capabilities. When stored correctly, the membrane has a life expectancy of at least 50 years for defined applications.
It is important to note that the quality and appearance of the applied finishes are directly influenced by the condition of the underlying substrate.
Uneven, loose, or soft stonework may need to be levelled and stabilised using a suitable repair mortar. Retaining sound cement render can be a beneficial option if the substrate beneath is known to be in poor condition. Gypsum-based plaster, wallpaper, and any buried timber must be removed, as these materials can deteriorate over time, especially in the presence of moisture.
Platon PB2 Mesh Membrane is tough but pliable, making it easy to form around internal and external corners and ideal for a variety of complex installation scenarios.
For projects involving new solid floors, it is recommended to apply the membrane to the walls first, lap the floor DPM up in front of the membrane, seal as required, and trim the DPM flush with the top of the finished floor. This ensures a comprehensive damp-proofing solution that protects against rising and lateral damp in various construction settings.
A) Platon PB2 Mesh Damp Proof Membrane is a high-performance, 2mm stud polypropylene cavity membrane designed specifically for damp proofing above-ground walls affected by rising damp, penetrating damp, or salt contamination. It provides a reliable solution for managing moisture ingress in both residential and commercial buildings. The membrane is applied to walls and finished with plaster, render, or plasterboard, making it a versatile option for various aesthetic and functional requirements.
A) Unlike traditional damp proofing methods, such as wet or liquid-applied tanking, Platon PB2 Mesh Membrane allows for immediate workability post-installation. This means that there is no need for lengthy drying or curing times, significantly reducing project downtime and accelerating return-to-use for treated walls. The membrane’s thin profile also minimizes intrusion into living spaces, making it a more practical and less disruptive solution compared to conventional methods.
A) Platon PB2 Mesh Damp Proof Membrane offers several key benefits, including immediate workability after installation, effective protection against rising and penetrating damp, and versatility in finishing options. The HDPE mesh surface provides a strong key for plastering, rendering, or attaching plasterboard. Additionally, the membrane requires minimal wall surface preparation and has a minimal impact on existing structures, preserving the integrity of older or historically significant buildings. Its resistance to moisture, salts, and other contaminants ensures long-term performance in challenging environments.
A) Platon PB2 Mesh Membrane is ideal for above-ground damp proofing applications, including walls affected by rising damp, penetrating damp, or salt contamination. It is suitable for use in various environments, such as residential homes, commercial buildings, barn conversions, historical restorations, and listed buildings. The membrane can be applied to a variety of substrates, including brickwork, blockwork, stone, and retained sound cement render, making it a versatile option for different types of wall construction.
A) To install Platon PB2 Mesh Membrane, position the membrane with the studs facing the wall and secure it using Platon Plaster Plugs. Drill a hole through the center of the stud into the substrate and insert the plugs, ensuring a tight and secure fit. For added damp-proofing, Platon Plaster Plug Seals or Newton 801 Sealing Mastic can be used around the plug head. The spacing between plugs should not exceed 250mm and should be arranged in a diamond pattern for optimal stability. For sealing, use Platinum Mesh Tape on butt joints, ensuring the membrane terminates at solid floor and ceiling junctions.
A) Platon PB2 Mesh Membrane can be finished with various options, including plaster, render, or plasterboard. For plaster finishes, the membrane can be coated with a proprietary lightweight plaster such as Tarmac Whitewall High Impact Plaster, or sand and cement render. For plasterboard finishes, the board can be bonded to the membrane using standard adhesive dabs or Plasterboard PU Adhesive Foam. These finishes provide flexibility for different aesthetic and functional requirements, allowing for a customized approach to damp proofing.
A) Platon PB2 Mesh Membrane manages moisture ingress through its studded design, which creates a cavity between the wall and the membrane. This cavity facilitates the drainage of moisture away from the wall, preventing further moisture ingress and maintaining a dry environment. The HDPE mesh surface also enhances adhesion for plastering or rendering, providing a secure and stable finish that helps keep moisture at bay.
A) Yes, Platon PB2 Mesh Membrane is ideal for use in listed buildings and historical restorations due to its minimal impact on existing structures and its ability to be applied over retained sound render or stonework. The membrane helps preserve the character and integrity of older buildings while providing effective damp proofing. Its thin profile and flexibility make it particularly suitable for adapting to the uneven surfaces often found in historical constructions.
A) No, Platon PB2 Mesh Membrane is designed specifically for above-ground damp proofing applications and is not suitable for use on floors or below ground level. The membrane is intended for use on walls affected by rising damp, penetrating damp, or salt contamination and should not be used in environments where it would be exposed to constant water pressure from below ground.
A) Platon PB2 Mesh Membrane has an expected lifespan of at least 50 years for defined applications, assuming it is installed correctly and maintained properly. The membrane's polypropylene construction ensures durability and resistance to environmental factors, providing long-term protection against moisture ingress and other damp-related issues in various building types.
A) Before installing Platon PB2 Mesh Membrane, the substrate should be clean, sound, and free from loose or deteriorating materials such as plaster, render, or screed. Any existing mould or masonry fungi should be removed, and affected areas treated with a biocide like Lignum Pro M50. If dry rot is detected, a detailed assessment should be conducted, and advice sought from a technical expert. The surface should be levelled using a suitable repair mortar if necessary, ensuring a stable and even surface for membrane application.
A) Platon PB2 Mesh Damp Proof Membrane is made from polypropylene with a nominal sheet thickness of 0.5mm and a stud height of approximately 2.0mm. The total construction height is about 2.5mm, and the unit weight is 0.505 kg/m². The membrane can withstand working temperatures up to +60°C, with a softening temperature of +160°C. It also features a linear coefficient of thermal expansion of 0.18mm/m°C and provides a water vapour resistance equivalent to a 250M air layer, ensuring effective moisture management.
A) Yes, Platon PB2 Mesh Membrane can be applied directly over retained sound cement render or stonework. This capability reduces the need for extensive substrate preparation, preserving the integrity of the existing structure while providing effective damp proofing. The membrane’s flexible nature allows it to conform to various surfaces, including those found in older buildings and historical restorations.
A) Associated products for installing Platon PB2 Mesh Membrane include Platon Plaster Plugs for fixing the membrane to the substrate, Platon Plaster Plug Seals or Newton 801 Sealing Mastic for providing a damp-proof seal around the plug head, Platon Sealing Rope for sealing overlaps between sheets, and Platinum Mesh Tape for jointing and providing a surface key for plastering or rendering.
A) Platon PB2 Mesh Membrane should be stored in an upright position, under cover, and away from high temperatures and open flames. Proper storage ensures that the membrane retains its quality and performance characteristics, providing effective damp proofing for its expected lifespan of at least 50 years.
A) Platon PB2 Mesh Membrane is not suitable for use below ground level or on floors, as it is specifically designed for above-ground damp proofing applications. It should not be exposed to direct sunlight for prolonged periods, as UV exposure can degrade the material over time. Additionally, installation should be avoided in conditions with atmospheric moisture levels exceeding 70% relative humidity, and impermeable floor finishes should only be installed when the screed moisture content is below 75% RH.
A) Yes, Platon PB2 Mesh Membrane is particularly effective for use on chimney breasts affected by salt contamination. The membrane prevents moisture ingress and allows salts to migrate away from the surface, maintaining a dry and stable finish. This makes it an ideal solution for older properties where chimney breasts are prone to damp and salt-related issues.
A) Platon PB2 Mesh Membrane allows for immediate workability post-installation, eliminating the need for drying or curing times. This rapid return to use significantly reduces downtime and accelerates project completion, making it ideal for time-sensitive damp-proofing projects. The membrane’s straightforward installation process further contributes to faster project turnaround times.
A) Typical applications for Platon PB2 Mesh Membrane include above-ground damp proofing of walls in residential and commercial buildings, barn and mill conversions, contaminated chimney breasts, listed buildings, historical restorations, and areas where traditional damp-proofing methods have failed or are impractical. The membrane provides a versatile and effective solution for a wide range of damp-proofing needs.
A) Yes, Platon PB2 Mesh Membrane can be used in combination with other Platon Membranes to provide a comprehensive damp-proofing solution. It is particularly effective for lining window and door reveals, where minimizing intrusion into openings is essential for preserving functionality and aesthetics. The membrane’s compatibility with other products enhances its versatility in various damp-proofing applications.
A) The HDPE mesh surface on Platon PB2 Mesh Membrane provides a strong key for various finishing options, such as plastering, rendering, or attaching plasterboard. This enhances the adhesion of these finishes, ensuring a secure and stable application. The mesh surface contributes to the membrane’s overall effectiveness in maintaining a dry environment by preventing moisture ingress and providing a reliable base for aesthetic finishes.
A) For optimal results, Platon PB2 Mesh Membrane can be finished with plaster, render, or plasterboard. When applying plaster, use standard plastering techniques and proprietary lightweight plaster or sand and cement render. For plasterboard finishes, bond the board to the membrane using adhesive dabs or Plasterboard PU Adhesive Foam. Ensure proper curing times between coats and follow recommended guidelines for achieving a durable and aesthetically pleasing finish.
A) Platon PB2 Mesh Membrane is designed to withstand a wide range of temperatures, with a working temperature limit of +60°C and a softening temperature of +160°C. Its polypropylene construction and technical specifications, such as a linear coefficient of thermal expansion of 0.18mm/m°C, ensure that it maintains its structural integrity and effectiveness in varying environmental conditions, providing reliable damp proofing.
A) When installing Platon PB2 Mesh Membrane around internal and external corners, it is important to ensure that the sheet is fixed tightly to the angle to create well-defined edges. Proper fixing is essential for subsequent plastering or finishing works to ensure a smooth and secure application. Care should be taken to avoid gaps or misalignments that could compromise the membrane’s effectiveness.
A) Yes, Platon PB2 Mesh Membrane is highly resistant to a range of chemicals, salts, and other contaminants. This resistance ensures long-term performance and reliability in challenging environments where other damp-proofing methods may fail. The polypropylene construction provides a durable barrier against moisture and contaminants, maintaining a dry and habitable environment.
A) The linear coefficient of thermal expansion for Platon PB2 Mesh Membrane is 0.18mm/m°C. This specification indicates the membrane's ability to maintain its dimensions and performance across a range of temperatures, ensuring stability and durability in various environmental conditions.
A) Yes, Platon PB2 Mesh Membrane is particularly useful where chemical damp-proof courses have been ineffective or are unsuitable due to the substrate’s nature. The membrane provides an additional layer of protection against moisture ingress, ensuring that the structure remains dry and habitable, even when previous damp-proofing measures have failed.
A) Platon PB2 Mesh Membrane is highly suitable for barn and mill conversions, where walls are often thick and constructed from random stone or brick. The thin profile and flexible nature of the membrane allow it to adapt to uneven surfaces, providing reliable damp-proofing without compromising the building's aesthetics. The membrane’s ability to be easily shaped around windows, doors, and corners enhances its versatility for these types of projects.
A) To ensure a continuous damp-proof barrier, Platon PB2 Mesh Membrane should terminate at solid floor and ceiling junctions. Butt joints in the membrane should be oversealed with Platinum Mesh Tape to create a seamless connection between sheets. Proper sealing and jointing techniques are essential to prevent moisture ingress and maintain the effectiveness of the damp-proofing system.
A) Aftercare for areas treated with Platon PB2 Mesh Membrane includes implementing adequate condensation control measures, particularly in areas lacking natural ventilation. Installing an effective mechanical ventilation system, such as Nuaire Extract Fans, is recommended to manage condensation and maintain a healthy indoor environment. Regular inspections for signs of moisture or damage and timely maintenance are also important to ensure long-term effectiveness.
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