Aliphatic urethane topcoat · CRU
ResinTech CRU Chemical-Resistant Urethane
A premium aliphatic polyurethane finish coat applied as the final, thin protective layer over compatible epoxy, polyaspartic, broadcast and traffic coating assemblies.
Documentation under revision. Packaging and technical data for CRU are being updated. The current kit configuration differs from the published data sheet, so mix ratio, packaging, coverage and performance values are not shown here until the revised documentation is issued. Use the technical enquiry form to request the current data sheet.
- FinishClear or field-pigmented; smooth or slip-resistant when broadcast media is specified
- Use environmentInterior and exterior exposure where UV, chemical and abrasion protection are priorities.
What CRU is
CRU is the thin durability layer of the ResinTech line: not the build coat, not the membrane and not the fast-track coat, but the final protective coat where a floor needs better long-term wear resistance, stronger chemical protection, UV stability and a hard, cleanable finish.
It is used as the optional premium upgrade over PTS, VTS and EWS systems and is the integral protective coat in the EWS-X double-broadcast system.
Supported applications
- Premium topcoat for parking decks, ramps, drive lanes, turning zones and service areas
- Final protective coat over sand, quartz, flake and reinforced traffic coating systems
- Commercial, institutional, warehouse, mechanical room, automotive and light industrial floors
- Balconies, podium decks, walkways, corridors and amenity areas over compatible base systems
- Food and beverage, service, utility and maintenance spaces exposed to routine cleaning chemicals
- Protective clear or pigmented upgrade over HPP, TUE, CBE or other compatible cured coatings
Role in ResinTech systems: Optional premium protective finish over any system; integral protective coat in EWS-X. See the traffic coating systems.
Limitations
- CRU is a finish coat. It is not a primer, not a build coat and not a crack-bridging membrane.
- Do not apply over unknown or incompatible coatings without adhesion testing and approval.
- Slip resistance depends on aggregate type, broadcast rate, film thickness and maintenance — approve texture by mock-up.
- Chemical resistance varies by concentration, temperature, exposure time and housekeeping — test severe exposures before use.
Technical documents
The published TDS-CRU-1.0 and SDS v1.0 describe a previous kit configuration and are withheld from this page pending revision. The systems design guide (Rev 1.12) still carries a CRU column in its typical-properties table; those figures also belong to the previous kit and are not reproduced on this site.
Related products
Questions and answers
Why are the technical values not shown?
The kit configuration has changed and the published data sheet describes the previous configuration. Rather than show numbers that may not apply, the page will be completed when the revised TDS and SDS are issued. Request the current documents through the technical enquiry form.
When is CRU chosen over HPP?
HPP when speed and UV stability are the dominant requirements; CRU when long-term abrasion and chemical protection are. CRU is commonly applied over HPP as the final protective coat.