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• Features & Benefits
• Preparation
• Application

Features & Benefits

• Suitable for Waterproofing:
  • Drinking water reservoirs
  • Interior and exterior cellar walls
  • Damp areas
  • Swimming-pools
  • Lift-rooms
  • Underground passages
  • Foundation walls
  • Irrigation channels
• One-component osmotic mortar, composed of a cement-based compound, selected grade aggregates and special synthetic resins according to a formula developed in MAPEI Research & Development Laboratories
• When mixed with water, 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 negative pressure
• Corresponds to the principles defined in EN 1504-9 (“Products and systems for protecting and repairing concrete structures: definitions, requirements, quality control and conformity assessment. General principles for the use of products and systems”) and the requirements of EN 1504-2 coating (C) according to the MC and IR principles (“Protection systems for concrete surfaces”)

Preparation

• The surface to be waterproofed must be perfectly clean and sound
• Remove crumbly or loose parts, dust, cement laitance, form release agents, varnishes and paint by mechanical brushing, sanding or high water pressure
• If water keeps leaking through concrete structures, block the leak beforehand with Lamposilex
• Renders must be perfectly anchored to the substrate. Seal cracks in the substrate and repair damaged parts with suitable products from the Mapegrout range
• Completely soak the substrate with water
• Wait for the evaporation of the excess water
• If necessary, in order to accelerate the operation, use a sponge or compressed air
• Pour 5.25 ÷ 5.75 litres of water into a suitable container and slowly add the Planiseal 88 while blending with a mechanical mixer
• Mix thoroughly for some minutes, taking care to blend in all the unmixed powder deposited on the sides and bottom of the bucket, until the mortar is completely blended (free from lumps)
• Leave the mortar to stand for approximately 10 minutes, remix and apply

Application

• Apply Planiseal 88 with a brush, trowel or spray
• Application by brush requires 2-3 coats. Make sure the previous coat is sufficiently dry before applying the next (generally 5-6 hours depending on the temperature and the absorption of the substrate. In order to have perfect adhesion between the coats, it is recommended not to exceed 24 hours)
• To achieve proper application, particular care must be taken to cover corners and coves
• When application is by trowel, it is recommended to treat the substrate with Planiseal 88 using a brush for the first coat
• When spraying, a normal rendering machine (including a rendering machine with bowl-type spray gun) can be used making sure to mix the product beforehand. After having soaked the substrate, apply the mix by spray in two layers. Apply the second one when the first has partially hardened
• In all cases the final thickness of Planiseal 88 must be approximately 2-3 mm
• Coverage approx. 1.5 kg/m2 per mm of thickness
• Planiseal 88 can be removed from tools with water before it hardens. Once hardened, cleaning becomes difficult and can be carried out only mechanically

Limitations

• In hot weather, or windy and very sunny days, it is recommended to spray the surface with water to prevent rapid evaporation of mixing water
• Before allowing drinking water to come into contact with Planiseal 88, make sure it has completely set by keeping to the recommended waiting times. Then thoroughly clean all the surfaces and remove all the water used for cleaning before filling
• Do not use Planiseal 88 for solving internal condensation problems (use de-humidifying renders, improve ventilation to the area or provide adequate insulation)
• Do not use on plasters, plasterboards, painted walls, plywood, chipboard, asbestos cement
• Do not mix Planiseal 88 with admixtures, cement or aggregates
• Do not use on surfaces subject to dynamic stresses