Professional use only - from the 24th August 2023, adequate training is required before industrial or professional use of this product.

Should you require training, visit - https://www.safeusediisocyanates.eu/

Fosroc Nitoproof 800 system is a polyurethane based waterproofing and crack bridging protection system. It provides a protective, durable, elastic, impervious, attractive surface which is easy to clean and maintain. The system is nominally 1.4mm thick and comprises one coat of Nitoprime UR FS, one coat of Nitoproof 800 Membrane and one coat of Nitoproof UVR Topcoat for exposed surfaces.

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• Features & Benefits
• Application Notes
• Limitations

Features & Benefits

When used as part of Nitoproof 800 system*:

• Fast application – minimises downtime
• Easy to clean and maintain
• Chemical resistant
• Durable – good abrasion and wear resistance
• Slip-resistant finish available
• Colour stable, UV and weather resistant
• Aesthetically attractive – Nitoproof UVR Topcoat available in a wide range of colours
• Fire-resistant
• Root barrier

*For buried surfaces Nitoproof UVR Topcoat is not required.

Uses

• Waterproofing system for new and existing structures
• Particularly suitable for waterproofing exposed concrete elements such as:
• Balconies, walkways & flat rooves
• Covered/buried concrete decks including podium decks and green rooves
• Reservoir up stands and wind turbine plinth bases

Application Notes

• Prime with Nitoprime UR FS at the required rate depending on the texture and porosity of the substrate. Where an anti-skid finish is required Nitoflor AntiSlip Grains are recommended
• Pour and drain the full contents of the membrane hardener container into the base container and mix thoroughly with a slow speed electric stirrer fitted with an appropriate paddle, for a minimum of 3 minutes until homogeneous
• Spread immediately onto the substrate at the required coverage rate. For best results, apply with a notched trowel or squeegee. Back-rolling with a short haired or spiked roller is advisable. Allow to cure for 4 hours at 20ºC
• An optional mesh can also be incorporated by laying a glass fibre mesh (between 100 and 180g/m²) on top of the wet layer of Nitoproof 800 membrane. For a light skid resistant finish, immediately apply Nitoflor Anti-Slip Grains by scatter (broadcast) at a consistent coverage of 1 kg/m2 . Allow to cure for 4 hours at 20ºC
• Remove excess sand prior to overcoating with Fosroc Nitoproof UVR Topcoat. If the membrane has been left to cure for >48 hours then wipe with Nitoprime 150. Remove any loose anti-slip grains by brushing or by vacuum
• Coverage rate 9m2 per 10KG pack
• Where movement is anticipated in live cracks and joints in the concrete substrate Proofex Overtape should be placed centrally over the joint prior to applying the membrane
• Tools and equipment can be cleaned immediately after use with Fosroc Solvent 102. Hardened material must be removed mechanically

Limitations

• Do not use on substrates where rising damp or a potential osmosis problem may exist
• Do not proceed with application if atmospheric relative humidity is >90% or if the surface temperature is <3ºC above the dew point
• Application should not commence when the substrate temperature or the ambient temperature is, or is anticipated to be, <5ºC during the application or within the tack-free period
• The design strength of concrete surfaces must be a minimum of 25MPa compressive strength at 28 days
• For car park decking systems use the Nitodek range of products
• All cracks, joints and upstands must be treated appropriately