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Watco Wallseal

Protect and dustproof walls without affecting appearance

  • Minimal darkening affect on substrate
  • Silky low sheen finish
  • Resists staining
  • Once coat usually sufficient
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Reduce dust in the environment using this highly effective transparent dustproofer. Watco Wallseal produces a silky, low sheen finish to dusty concrete pillars and gritty brick and blockwork walls. One coat is generally sufficient to dustproof. A second coat may be required on some surfaces to produce a ‘wipe clean’ sealed surface. 

Recommended areas of use

  • Suitable for virtually all surfaces including render, plaster, concrete, blockwork and brickwork


  • Seals, dustproofs and protects
  • Resists staining
  • Minimal darkening effect on the substrate
  • Easy to apply thanks to its water based formulation


Properties Transparent finish, seals, dustproofs, resists staining, minimal darkening effect, easy to apply, water based formulation, low sheen finish, two coats will provide a 'wipe-clean' sealed surface.
Suitable for Brick, masonry, concrete, plaster, most porous surfaces
Appearance Satin.
Finish Clear
Surfaces Walls.
Interior or Exterior Interior and exterior
Primer required No primer required.
Composition Single pack, water based acrylic
Coverage 40m² per 5L per coat
Number of coats 1
Recommended number of coats 1 normally or 2 for a 'wipe-clean' sealed surface.
Drying time 4-6 hours.
Curing time 6 hours at 20°C
Minimum application temperature 10°C


Surface preparation

Concrete, Masonry, Blockwork, Renders etc. - A good sweep is usually sufficient on a dusty or gritty surface. Simply remove as much loose material as possible. If areas require washing down, allow to dry before applying Watco Wallseal.

Painted or Sealed Surfaces - Watco Wallseal may be applied after the removal of any dirt or grease. A trial area is recommended to test adhesion.


If appearance is critical we recommend the application of a small trial area first.

No need to stir. Apply using a brush or roller. Watco Wallseal is a low viscosity liquid which may be easier to work into a porous or uneven surface using a brush. Work well into the surface applying more if the liquid rapidly ‘disappears’ into very porous, absorbent surfaces.

One coat will generally bind and seal most surfaces. A second coat is usually required to produce a sheen, especially on porous surfaces. The sheen level can be increased by applying further coats as required.

Data sheets

Data sheets

Safety data sheets

Safety Data Sheet

Technical data sheets

Technical Data Sheet
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From €340.31

€418.58 Inc VAT

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Tools and accessories

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Paint Brush

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Watco Wallseal

Watco Wallseal

Protect and dustproof walls without affecting appearance

From €340.31  (Ex VAT)