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• Features & Benefits
• Application Notes
• Limitations

Features & Benefits

• Environment friendly – 100% solids
• Spray applied at low pressure – no need for specialist polyurea hot spray apparatus
• Can be pour/gun applied with manual equipment
• Excellent chemical resistance, thermal stability and UV resistance
• Very fast turn-around time. The coated substrate/repair/seam seal can be put into service within an hour
• Seamless and monolithic, including field joints
• Significantly enhances the durability of reinforced concrete
• Colour stable when coated with Nitoproof UVR Topcoat
• Can be applied at ambient temperatures from 5⁰C to 70⁰C

Uses

• Standard product has a low viscosity and is suitable for spray application; it can also be poured into deck cracks
• Gun grade is thixotropic and applied by gun, especially suitable for seam seals of Fosroc Proofex Engage waterproofing system

Typical applications include:

• Below ground waterproofing seam sealing
• Pipe/pipeline coating
• Bridge/Bridge deck waterproofing
• Tank coating
• Waste water tank lining
• Marine enviroment
• Roof waterproofing
• Truck bed lining
• Theme parks and decorative designs
• Aquarium lining
• Stadia
• Landscape and water containment
• Secondary containment
• Airports
• Refineries
• Green roofs
• Tunnel lining
• Swimming pools

Application Notes

Fosroc Polyurea WCS standard grade can be pour applied using 600ml cartridges with the appropriate size of pneumatic gun or with a manual gun, fitted with pour static mixer, then tooled quickly as appropriate with a flat-bladed scraper.

• Spray Application – standard grade product. Fosroc Polyurea WCS pneumatic gun with spray static mixer
• Pour Application – standard grade product. Fosroc Polyurea WCS manual gun or Fosroc Polyurea pneumatic gun with pour static mixer
• Gun Application - gun grade product. Fosroc Polyurea WCS manual gun or Fosroc Polyurea pneumatic gun with pour static mixer
• Recommended pressure for spray application is 8 – 10 bar
• Normal recommended minimum applied thickness is 1.0 mm, using cross-hatch spray pattern
• Recommended product temperature 5⁰C to 40⁰C
• Gel time 1-2 minutes
• Can be walked on carefully after approximately 20 mins; is light duty trafficable (e.g. light foot traffic) after approximately 1 - 2 hours, and fully serviceable after 24 hours. Gun grade servicable in 10-20 minutes
• If the maximum overcoating time has been exceeded, Nitoprime 150 can be used to re-activate the coating
• If colour stability is required, a minimum 0.2mm film of Fosroc Nitoproof UVR Topcoat of the appropriate colour should be applied
• Coverage: 0.6 m² per 600ml pack (1mm film) / 0.3 m² per 600ml pack (2mm film)
• For sound, dry concrete and at ambient/substrate temperatures of ≥10⁰C, prime using Fosroc Nitoprime 31. If this condition or concrete substrate condition is not met (see Limitations), then Fosroc Primer 195 must be used. For steel surfaces use Primer 195

Limitations

• Do not proceed with application if atmospheric relative humidity is >90% or if the surface temperature is <3ºC above the dew point
• For a bonded polyurea coating application, concrete substrate must have achieved at least 75% of its design strength. Concrete relative humidity must be ≤75%. Do not proceed with application if the substrate temperature or the ambient temperature is, or is anticipated to be, <5ºC during the application
• For work in exposed areas, do not proceed with application if precipitation is imminent
• For spray applications, the product is recommended to be within the optimum temperature range of 25 to 40ºC. This may require the product to be warmed prior to spray application
• It should be noted that Fosroc Polyurea WCS is an aromatic polyurea; therefore, as with all aromatics, over a period of time significant colour change will occur if exposed to UV rays. This will not cause any negative effect on the physical properties of the product. If colour stability is required, apply Nitoproof UVR Topcoat