Platon Brick Plugs With Sealing Washers

Q) What are Platon Brick Plugs With Seals used for?

A) Platon Brick Plugs With Seals are specialist membrane fixing plugs used to secure Platon cavity drain membranes to masonry retaining walls in below-ground waterproofing systems. They are designed for use with products such as Platon P8 Membrane and Platon P8 Mesh, helping hold the membrane firmly against brick, concrete, stone or similar suitable substrates. Their purpose is not simply to act as a standard wall plug, but to fix the membrane while helping preserve the watertight integrity of the system. The separate TPE sealing washer compresses around the fixing point, helping prevent water or damp from passing through the drilled hole behind the membrane.

Q) Why do Platon Brick Plugs With Seals have sealing washers?

A) The TPE sealing washers are a key part of the waterproofing detail. When the Platon Brick Plug is driven through a membrane stud into the drilled masonry hole, the washer compresses between the plug head and the membrane face. This helps form a sealed fixing point around the hole, reducing the risk of damp or water tracking through the penetration. In basement waterproofing and cellar tanking work, every hole through a cavity drain membrane has the potential to become a weak point if it is not sealed properly. The washer therefore helps maintain system integrity while still allowing the membrane to be mechanically fixed securely to the substrate.

Q) Can Platon Brick Plugs With Seals be used with Platon P8 Membrane?

A) Yes, Platon Brick Plugs With Seals are suitable for fixing Platon P8 Membrane to retaining walls and masonry substrates. Platon P8 is a non-meshed cavity drain membrane, so it is commonly fixed at around 5 plugs per m² where the membrane simply needs to be held against the wall before an independent internal lining, dry-lining system or similar finish is installed. The plugs are driven through the membrane studs into 10mm drilled holes, with the washer sealing the fixing point. This provides a secure mechanical fixing while helping reduce the risk of water ingress through the fixing penetration.

Q) Are Platon Brick Plugs With Seals suitable for Platon P8 Mesh?

A) Yes, Platon Brick Plugs With Seals can be used with Platon P8 Mesh Waterproof Membrane, but the fixing pattern is usually different from non-mesh membrane installations. Platon P8 Mesh is designed to support direct plastering, rendering or compatible finishing systems, so it normally needs to be held much tighter to the wall. A typical fixing density is around 15 plugs per m², helping prevent the membrane from bowing, moving or pulling away from the substrate once the finish is applied. Correct fixing density is important because meshed membranes rely on firm support behind the surface finish, especially when wet plaster or render is added.

Q) How do you install Platon Brick Plugs With Seals?

A) Platon Brick Plugs With Seals are installed by drilling a 10mm hole through a stud in the Platon membrane and into the masonry substrate behind it. The plug is fitted with the separate sealing washer, positioned in the drilled hole, then driven fully home using a club hammer. The plug should be seated firmly so the washer compresses properly against the membrane face, creating a sealed fixing point. Care should be taken to drill straight, avoid loose mortar where possible, and ensure the substrate is strong enough to hold the fixing securely. If a fixing fails to grip, a new fixing point should be selected nearby.

Q) What size are Platon Brick Plugs With Seals?

A) Platon Brick Plugs With Seals measure 10mm in diameter x 75mm in length. The 10mm diameter matches the required drilled hole size, while the 75mm length provides a strong fixing depth into suitable masonry substrates such as brick, concrete, stone and mixed masonry. This makes them more robust than lighter membrane fixings, particularly in below-ground work where the membrane must remain securely fixed before final finishes are installed. The plug is manufactured from glass-filled polyamide, giving it additional strength and durability. Because the plug size is specific, installers should use the correct 10mm drill bit and avoid oversized holes that could reduce fixing strength.

Q) Can you screw battens or dry-lining systems into Platon Brick Plugs?

A) Yes, one of the main benefits of Platon Brick Plugs With Seals is that the plug core accepts 5mm size 10 threaded screws, with a maximum screw depth of 30mm into the plug. This allows battens, ply board, wall ties, tracking and compatible dry-lining systems to be fixed through the plug itself, rather than drilling additional holes through the waterproof membrane. This is especially useful in basement waterproofing systems because unnecessary membrane penetrations can create avoidable weak points. Correct screw length is important, as over-driving or using screws that go too deep may damage the fixing detail or reduce the plug’s effectiveness.

Q) What size battens can be fixed into Platon Brick Plugs With Seals, and how do you work out the screw length?

A) Platon Brick Plugs With Seals can be used to fix timber battens for dry-lining and internal finishing systems, provided the screw only fixes into the plug and does not create a new membrane penetration. Typical batten sizes are often around 25mm x 38mm or 25mm x 50mm, depending on the lining system and the support needed for plasterboard edges. The plug accepts 5mm size 10 threaded screws to a maximum depth of 30mm into the plug. To work out screw length, add the batten thickness to the required screw embedment into the plug, but do not exceed 30mm embedment. For example, a 25mm thick batten with 25mm embedment would usually need a 50mm screw.

Q) What substrates can Platon Brick Plugs With Seals be fixed into?

A) Platon Brick Plugs With Seals are designed for use in suitable masonry substrates, including sound brickwork, concrete, stone and many mixed masonry walls. The key requirement is that the substrate must be strong and stable enough to accept a 10mm drilled fixing and hold the 75mm plug securely. If the wall is crumbling, friable, hollow, heavily degraded or made up of very loose mortar and rubble, the fixing may not grip properly and the membrane may not be held tight enough. On older basements and cellars, it is worth checking wall condition carefully before installation, especially where salts, dampness or previous coatings have weakened the surface.

Q) How many Platon Brick Plugs With Seals are needed per square metre?

A) The number of Platon Brick Plugs With Seals needed depends on the membrane type and the intended finish. For Platon P8 Membrane, a non-meshed cavity drain membrane, a typical fixing rate is around 5 plugs per m². This is usually enough where the membrane is being held in place behind independent dry-lining or a separate internal finish. For Platon P8 Mesh, the fixing rate is typically much higher, around 15 plugs per m², because the mesh surface is intended to support direct plastering, rendering or compatible finishes. Always follow the membrane specification, as too few fixings can lead to movement, poor support or finish failure.

Q) What are the main limitations of Platon Brick Plugs With Seals?

A) Platon Brick Plugs With Seals must be used as part of a correctly designed Platon waterproof membrane system, not as general-purpose fixings for unrelated applications. They rely on a sound masonry substrate, accurate 10mm drilling and correct washer compression to perform properly. They should not be installed into loose, crumbling or unsuitable backgrounds where the fixing cannot grip securely. The TPE washer helps seal the fixing point, but it does not compensate for poor installation, damaged membrane studs or badly positioned holes. When using screws through the plug core, installers must keep within the recommended 5mm size 10 screw format and maximum 30mm screw depth to avoid compromising the fixing detail.