Product DescriptionR 21 CE is a high gloss, self-smoothing, epoxy resin floor finish applied between 0.5 – 1.0 mm thickness. It combines outstanding wearing properties with chemical resistance and decorative finish. Ideally suited in situations where a seamless, joint free finish is required and maximum cleanliness is essential.Features:
- Seamless: easily cleanable to maintain high standards of hygiene
- Tough & Hard wearing: durable with low maintenance cost
- Resistant to a wide range of chemicals and liquids
- Self-smoothing: provides a flat high gloss finish
- Suitable for use as topping on existing epoxy screed
- Food grade: CFTRI approved; confirms to the specifications as per U.S FDA 175.300
- Supplied in pre-measured packs for 0.5 mm and 1 mm thickness requirements
Note: The substrate should have a surface tensile strength of at least 1.5 N/mm².
It is essential that R 21 CE is applied to sound, clean and dry surfaces to ensure maximum adhesion. The ideal substrate for application is a flat, lightly textured and clean surface. Surface irregularities must be ground down or filled out with ARDEX ENDURA range of repair materials.
Note: Any joints in the base e.g. movement joints, should be brought through to the finished surface and suitably sealed. Concrete Floors
New concrete floors must be allowed to cure for at least 28 days and shall have an effective damp-proof membrane below to prevent rising dampness. The concrete substrate must be hard, sound, free of dust and other barrier materials such as mortar, curing agents, laitance, oil, grease, etc. that will inhibit adhesion to the substrate. Overwatered or otherwise weak concrete surfaces must also be suitably prepared down to sound, solid concrete by mechanical methods. Dust and other debris should be removed using vacuum equipment.
The ideal substrate for application is a flat, lightly textured, clean concrete surface. Surface irregularities must be ground down or filled out with ARDEX ENDURA range of repair materials. Concrete surfaces should be mechanically prepared, either by grinding, contained shot blasting or similar, and be vacuum cleaned.
Note: The surface moisture content should be less than 5% before commencement of the work. The coating should not be applied to floors that are known to have rising moisture. The product should not be applied in temperatures less than 10°C or where the ambient relative humidity is greater than 85%.Epoxy Screeds/Underlay
The surface of the epoxy screed/underlay should be cleaned free of dust or any other contaminants that could inhibit the adhesion. Any surface irregularities must be ground down or filled out with EP 305 (epoxy repair compound). Priming
Priming is not necessary when R 21 CE is laid on epoxy screed / underlay. All concrete floors to be installed with R 21 CE must first be primed with R 2 CE or R 3 E(depending on substrate condition). One or more coats of the primer may be required depending upon the condition and porosity of the concrete substrate. High porosity substrates may be revealed after preparation and will be evident by their rapid suction and absorption. Poorly primed surfaces may lead to blistering or pin holing in the cured resin. Allow for overnight drying