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How to Guide: Slimline Plaster Membrane

How to Guide: Slimline Plaster Membrane

RUK Slimline Plaster Membrane is an easy-to-use, opaque and waterproof membrane, with a 3mm profile, for damp proofing walls. The opaque colouring of our slimline plaster membrane makes it easy to work with as it is semi-transparent. The special mesh attached to one side allows the user to plaster straight on to the slimline membrane, or dot and dab in conjunction with plasterboard.

RUK Slimline Plaster Membrane can be used above ground to waterproof damp walls, or below ground in basement and cellar conversions. We recommend that this waterproofing slimline plaster membrane is fixed to damp, salt contaminated walls using RUK Plaster Membrane Plugs. These are suitable for boarding and/or plastering straight over.

If you have any questions or require a sample of membrane posting to you, please don't hesitate to contact our sales office on 01509 216323 and we'll be happy to help.

Instructions for use:

1. Surface Preparation

Remove any damaged loose or crumbling materials from surfaces to be covered. Remove any protrusions likely to puncture the membrane or cause unnecessary undulations.

2. Fixing the membrane

When installing, face the studs to the wall, thus creating an air-gap which allows the wall to breathe whilst blocking the passage of moisture.

Drill through the membrane using a 7mm or 8mm drill bit according to substrate to give a secure fix.

 

3. Securing with Plugs

Fix the membrane to the wall using RUK sealed plaster plugs. Use large head hammer to gently drive the plug into a pre-drilled hole.

Allow approximately 15 plugs per square metre.

Plugs can be used in all substrates: stone & brick, concrete.

 

4. Fleeceband

Use Fleeceband plaster membrane tape to seal joints between the membrane. This tape will hold a plaster finish or plaster board.

5. Finishing with a direct plaster finish or plaster board

It is important to note that it is necessary to vary fixing centres dependent upon the finish to be applied. In all cases any plaster/render should be applied in strict accordance with the manufacturers instructions as well as good plastering/rendering practice outlined in the BS542 and BS5262 Codes of Practice. The minimum depth of plaster/render to be applied should be 15mm. To ensure a good mechanical key the first coat should be applied with firm pressure to a thickness approximately 6mm proud of the membrane surface and scratch finished to provide a key for the subsequent floating coat. Once the first coat has set and dried a 6mm floating coat should be applied and again scratch finished to form a key for the setting coat. Once the floating coat has set a 3mm setting coat may be applied. Various wall finish materials together with the appropriate fixing centres are described below:-

  • White Wall

Fixing centres should not exceed 300mm. This is a pre-mixed bagged plaster which is very suitable for use internally.

  • Sand & Cement Renders For Internal Use

Fixing centres should not exceed 300 mm. Renders do not possess the flexural properties and elasticity of pre-bagged plaster unless modified by additives. Each coat should be made up of 6:1:1 sharp washed sand: lime : cement. At least 10 days should be allowed between coats to minimise the possibility of shrinkage cracks, but even so some may still occur. Sand and Cement renders are not recommended for ceilings or barrel vaults.

  • Dry Lining

RUK Slimline Plaster Membrane is suitable for use in conjunction with 'dot & dab'           

plaster board dry lining techniques. Apply the plaster board bonding compound onto the Plaster Plugs fixing heads so that at least 50% of the mesh face is generously covered with the bonding compound. Temporarily support the weight of the plaster board whilst the adhesive cures.

 

NOTES:

  1. Do not apply any decoration onto newly plastered surfaces until it is totally dry.
  2. Adequate natural ventilation or powered extraction, preferably with a humidistat control, should always form part of a damp-proofing programme especially when membranes are applied internally.
  3. No responsibility can be accepted by Restoration UK Ltd. for the performance of any plaster or render applied over RUK Slimline Plaster Membrane or any associated workmanship.
  4. In below ground situations where running water is possible, consideration should be given to using on alternative RUK Membrane that requires less mechanical fixing. Please ask our technical department for guidance.

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Need some advice? Call 01509 216 323

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Restoration UK Ltd
Unit 3, 18 Hanford Way
Loughborough, Leicestershire
LE11 1LS

01509 216323
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