Mapei Planiseal 88 - Formerly Idrosilex Pronto

Non Hazardous
Osmotic cementitious mortar suitable for contact with drinking water, for waterproofing masonry and concrete structures.
Available in 25 kg bags and pallets of 50pcs
From £74.24 £61.87
In stock
Only %1 left
Product Description

Mapei Planiseal 88 a ready-to-use heavy-duty, osmotic, waterproofing cementitious mortar for waterproofing masonry and concrete structures for contact with drinking water.

Best Uses

Mapei Planiseal 88 is ideal for the waterproofing of foundations, walls, cellars, basements, lift-rooms, swimming-pools, canals and reservoirs. Planiseal 88 is suitable for repairing underground masonries subject to water and moisture seepage in situations with negative pressure up to 1 atmosphere. Also suitable for waterproofing basins, reservoirs, concrete or masonry tanks containing drinking water, and for waterproofing concrete or masonry tanks containing sewerage water.

Ideal For:

  • Waterproofing
  • Drinking water reservoirs
  • Interior and exterior cellar walls
  • Damp areas
  • Swimming pools
  • lift-rooms
  • Underground passages
  • Foundation walls
  • Irrigation canals



Mapei Planiseal 88 is a pre-blended powder, composed of a cement-based compound, selected graded aggregates and special synthetic resins according to a formula developed in the MAPEI research laboratories. When mixed with water, Mapei Planiseal 88 becomes a fluid mortar that can be applied by trowel, brush or by spray with excellent adhesion to the substrate for complete waterproofing, even in the presence of slight negative pressure.

Mapei Planiseal 88 can be applied with a brush, trowel or spray. For application by brush or spray, apply 2-3 coats to the perfectly cleaned and solid substrate which must be thoroughly soaked with water beforehand. When applying by trowel reduce the mixing water to 5-6 litres for each bag.

Technical Details


  • London Underground Approved Products Register (APR) ID 2856

Technical Info

  • Suitable for contact with drinking water
Components: Single Pack
Type: Osmotic mortar
Finish: -
Stock Colours: Grey
Tintable: No
VOC Content: -
Dry Solids Content: 100%
Suitable Substrates: Basins, reservoirs, concrete or masonry tanks containing drinking water or sewage water
Application Method: Brush, Trowel or Spray
Theoretical Coverage: 1.5 kg/m2 per mm of thickness
Application Temp: From +5°C to +35°C
Induction Time: -
Pot Life: Approximately 1 hour at +20°C
Application of Successive Coat: After 5 hours, and no later than 24 hours
Ready For Use: 7 days
Cleaner / Thinner: Clen tools with water before product hardens
Shelf Life: 12 months from date of production unopened 
Packaging: Available in 25 Kg bags and pallets of 50pcs

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