From £22.79 + VAT per 20kg bag

Multipor FIX X730 lightweight adhesive mortar/plaster

Multipor FIX X730 is:-

  • a lightweight, vapour permeable adhesive for the Multipor ExSal Therm below ground insulation system.
  • used as a plaster layer, along with fibreglass mesh, over the Multipor ExSal Therm boards.
  • suitable for use as a levelling coat plaster for salt contaminated masonry.
  • suitable for below ground use inside tanking membranes.

Product overview

Where is it used?

  • Multipor FIX X730 is applied to the back of the Multipor boards to bond them to the wall surface.
  • It is used internally to level salt contaminated or damp masonry.
  • As a plaster coat, it is used internally and reinforced with a fibreglass mesh, such as Baumit StarTex mesh.

How is it used?

  • Brush and/or wash down masonry surface to remove loose material, dust and any salt contamination.
  • Once the surface has dried, apply a splatter coat of Baumit SV61 Sanova Pre to create a key.
  • If the wall surface is uneven, apply a coat of Multipor Fix X730 to level it.
  • The back of the boards should be fully coated with the FIX X730 and combed with a 10-12mm knotched trowel, to ensure an even thickness. All ridges must be full to get an even thickness coat.
  • The boards are then applied to the wall around 5mm away from adjacent boards.
  • Once in position, slide the board 5mm up to the adjacent board in a direction perpendicular to the direction of combing. This ensures that you create a fully filled layer behind the boards, with no voids present.
  • As a plaster layer, apply to the surface of the Multipor boards and comb with a 10-12mm knotched trowel to ensure an even thickness.
  • Whilst wet, lay in a layer of the Baumit StarTex mesh and trowel so that the mesh is covered by around 1mm of the FIX X730 plaster.
  • Leave to dry for 4-5 days before applying the Baumit RK 70N lime plaster finish coat or Baumit Klima Glatte lime finish coat for a finer finish.

How much will you need?

  • Each 20kg bag will cover up to 5.5m2 at 5mm.
  • You will need to use a 5mm coat as the adhesive layer and also as the base coat plaster layer.

Frequently asked questions

How long does it take to dry?

  • Allow 1mm per day for drying in warm, dry conditions.
  • In cold conditions or high humidity, drying times will be increased.

How long does it take to set?

  • You need to use mixed product in 1.5 hours or less.
  • Setting times vary with temperature and humidity but as a guide, 12 hours or so during summer months and over 24 hours in cold, damp winter conditions.

Pricing & shipping

Bag weight (kg) Coverage [m²]Single bag costFull pallet bag cost (48 bags per pallet)
20up to 5.5m2 at 5mm thickness£25.33£22.79

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If you can’t seem to find what you need on our website or you have large quantities of materials to purchase please contact us for a chat and we’ll offer you a more bespoke solution.

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