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Prestonett Waterproof Masonry Filler

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A high performance polymer modified concrete repair and waterproof protection filler.

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Product Info

It is permeable to water vapour and is suitable for filling holes and cracks up to 15mm in one application. It is quick and easy to mix and is ideal for shaping and moulding.  It is waterproof at 3mm thickness.

It is also suitable for surface levelling and can also be used to repair reinforced concrete.


Once dry it is easy to sand to a very smooth finish and will not flash or grin through subsequent paint finishes.


Waterproof Masonry Filler can also be applied to damp surfaces.


Suitable for filling

  • Fine Grain concrete, concrete and cellular concrete
  • Brick and Concrete block
  • Cement
  • Plaster and Plasterboard
  • Stone
  • Mortars


And can be used to over- coat light weight wall coverings and old paintwork


Application Method

Mix with 25% water

Apply using a filling knife, blade or trowel


Do not try to remix the filler once it has started to set.



Can be painted once dry and there is no need to spot prime.



Technical Data
Dilution rate 25%
Application thickness Up to 15mm
Working Time 30 minutes
Average Consumption 1.2kg powder fills a volume of 1 litre


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