Polyurethane Floor Coating Systems: Self-Leveling, Water-Based and Wear-Resistant

A polyurethane floor coating is the wear layer you specify when concrete has to survive impact, abrasion and thermal shock at once. Unlike a rigid epoxy it cures to a resilient film, so a polyurethane floor paint takes point loads and forklift traffic without cracking. Urethane and polyurethane refer to the same coating family on this page. This range covers four systems: CK96 and CK97 make up a self-leveling polyurethane system for heavy-load bays; PU3600 is a super wear-resistant polyurethane topcoat; and WPU100 is a water-based polyurethane floor finish for low-odour interiors.

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Where Should You Use a Polyurethane Floor Coating Instead of Epoxy?

Both systems bond to prepared concrete, so the deciding factor is what the floor has to survive. Choose polyurethane paint for concrete floors that flex, take impact or see thermal cycling. Choose epoxy where the floor faces solvent or alkali spillage and needs maximum hardness.

Polyurethane and epoxy floor coatings compared by service condition
Fastighet	Polyurethane floor coating	Epoxy floor coating
Film behaviour	Resilient — absorbs impact and slab movement	Rigid and hard
Termisk chock	Holds properties from −20 °C to +75 °C	Limited; can crack at thermal extremes
UV and daylight	Stays colour-fast and gloss-retentive	Chalks and yellows outdoors
Abrasion	Very good — PU3600 is specified where abrasion dominates	Bra
Kemisk beständighet	Resists inorganic acids, alkalis and salts	Stronger against solvents and alkalis
Typical use	Heavy-load bays, ramps, cold stores, food plants	Chemical bunds, plant rooms, base coats
CK96, CK97, PU3600 and WPU100 are all specified for use over solvent-based or solvent-free epoxy base coats. Confirm the figures for your combination against the TDS.

Which Polyurethane Floor System Do You Need?

Match the system to the load and the finish you need. CK96 and CK97 are self-leveling polyurethane mortar systems that form the body of the floor. PU3600 is a super wear-resistant polyurethane topcoat for the hardest-wearing bays, and WPU100 is a water-based finish for low-odour interiors.

Polyurethane floor systems in this range, with pack sizes and mixing ratios
System	Produkt	Komponenter	Key figures	Avsluta	Pack and ratio	Täckning
Self-leveling, standard	CK96	4	Compressive 45 MPa · flexural 15 MPa · bond to concrete >1.7 MPa	High-gloss bright surface	26.1 kg — A:B:C:D = 2.97 : 2.85 : 19.78 : 0.5	2 kg/mm/m²; a 26.1 kg kit covers about 3 m²
Self-leveling, anti-slip	CK97	3	Compressive 45 MPa · flexural 15 MPa · bond to concrete >1.7 MPa	Matte with anti-slip particles	35.5 kg — A:B:C = 2.65 : 2.85 : 30	15–27.5 kg/m² at 5–11 mm
Super wear-resistant topcoat	PU3600	3	Surface dry ≤4 h · hard dry ≤24 h · GB/T 22374-2018	Rough textured, wear-resistant	A:B:C = 5 : 2 : 3 by weight	About 0.1 kg/m² per pass
Water-based finish	WPU100	2	Adhesion grade 1 · hardness >4H · abrasion <0.04 · GB/T 22374-2018	Soft gloss, clear	A:B = 5 : 1 (A 4 kg + B 0.8 kg)	0.08–0.1 kg/m²
CK96 and CK97: full cure 7 days, operating time 25 minutes at 20 °C, open walking in 36 h (CK96) and 24 h (CK97), service range −20 °C to +75 °C. VOC, free formaldehyde, benzene series and soluble heavy metals are all well below the limits of JC/T 2327-2015 Waterborne polyurethane flooring. WPU100 mixed material must be used within 60 minutes.

What Substrate and Service Conditions Suit Polyurethane?

Polyurethane floor coating selection by service condition
Service condition	System	Why it fits
Heavy forklift traffic, loading bays	CK96 self-leveling, gloss	45 MPa compressive strength with a resilient film; 3–6 mm single-pass build
Wet, oily or ramped areas	CK97 anti-slip polyurethane, matte	Matte anti-slip particles keep grip when wet; 24 hours to open walking
Vehicle workshops and garages	CK97 anti-slip polyurethane	A polyurethane garage floor coating that keeps grip under oil and water
Abrasion-heavy production bays	PU3600 wear-resistant topcoat	An abrasion resistant polyurethane topcoat; about 0.1 kg/m² per pass
Refresh of an existing epoxy floor	PU3600 or WPU100 over the old base	A polyurethane paint for floor areas that only need a new wear layer; both are specified over solvent-based and solvent-free epoxy
Low-odour interiors, occupied buildings	WPU100 water-based finish	Water-dilutable, low VOC, low odour, hardness above 4H
Cold stores and thermal cycling	CK96 / CK97 over an epoxy base	Properties held from −20 °C to +75 °C; the resilient film follows thermal movement
This table carries the application terms buyers search for: anti-slip polyurethane, wear-resistant topcoat, garage floor coating and water-based finish.

Application Conditions for Polyurethane Floor Coatings

Substrate and ambient temperature: CK96 and CK97 are applied at 15–30 °C. PU3600 is applied at 0–35 °C and WPU100 at 10–35 °C. Below the lower limit of a system, wait for warmer weather or specify a different system.
Substrate moisture: below 8 % for the coating systems, and the slab must be dry with no standing water before priming.
Ambient relative humidity: below 80 %. WPU100 works best between 35 % and 80 %; above 80 % the film can stay tacky or lose gloss.
Ytbehandling: scarify or grind to expose sound concrete and open the surface, then prime and level with the mid-coat. On the self-leveling mortar systems, cut 8 × 8 mm anchor grooves at wall edges, doorways, equipment bases and both sides of expansion joints. These systems are specified by mechanical preparation and primer, not by an ICRI CSP number.
Cure and access: CK96 reaches open walking in 36 hours, CK97 in 24 hours, and full cure is 7 days at 20 °C. PU3600 is hard dry in 24 hours and WPU100 in 36 hours. Mix only what can be applied within 25 minutes (CK96, CK97) or 60 minutes (WPU100) at 20 °C.

Packaging, Coverage and Ordering

Pack sizes and ratios: CK96 26.1 kg (A:B:C:D = 2.97 : 2.85 : 19.78 : 0.5), CK97 35.5 kg (A:B:C = 2.65 : 2.85 : 30), PU3600 A:B:C = 5 : 2 : 3, WPU100 A:B = 5 : 1 (A 4 kg + B 0.8 kg). Each system ships as one kit, so no ratio calculation is needed on site.
Täckning: CK96 2 kg/mm/m² (a 26.1 kg kit covers about 3 m²), CK97 15–27.5 kg/m² at 5–11 mm, PU3600 about 0.1 kg/m² per pass, WPU100 0.08–0.1 kg/m².
Colours: CK96 five standard colours (signal red RAL 3001, leaf green RAL 6002, earth grey RAL 7037, corn yellow RAL 1006, ivory RAL 1014); CK97 four (yellow RAL 1014, red RAL 3002, green RAL 6001, orange RAL 1006). Custom colours on request. Slight colour shift in service is normal for a functional floor and does not affect performance.
Shelf life and storage: PU3600 12 months, WPU100 6 months. Store at 5–35 °C in a cool, dry, ventilated place away from heat, sparks and direct sunlight.
Ordering: send the area in m², the substrate and the load it carries, and we confirm the system, the quantity and the price in the quotation. Technical data sheets and safety data sheets (MSDS) are issued with it.

Frequently Asked Questions about Polyurethane Floor Coatings

How long before a polyurethane floor can take traffic?

CK96 reaches open walking 36 hours after application and CK97 24 hours, both measured at 20 °C. Full cure is 7 days, which is when the mortar reaches its stated 45 MPa compressive strength. For a topcoat rather than a mortar, PU3600 is hard dry in 24 hours and WPU100 in 36 hours.

Is polyurethane better than epoxy for a warehouse floor?

For a warehouse polyurethane usually wins on two counts: it takes forklift impact without cracking, and it keeps its colour under daylight where epoxy chalks. CK96 and CK97 hold their properties from −20 °C to +75 °C, so they also suit cold stores. Choose epoxy instead where the floor faces solvent or alkali spillage, or where you need the hardest possible surface.

Can a polyurethane floor coating go over an existing epoxy floor?

Yes, and it is a common way to refresh a worn floor. PU3600 and WPU100 are both specified for use over solvent-based and solvent-free epoxy, so the existing epoxy stays as the base coat and the polyurethane becomes the new wear layer. The old surface has to be sound, clean and ground open so the new coat keys to it. The mid-coat should be the same colour as the topcoat so the finish stays even.

Which system suits a wet, oily or ramped area?

Use CK97, the matte anti-slip version. Its surface carries anti-slip particles, keeps grip when the floor is wet, and reaches open walking in 24 hours. For ramps and wash-down bays this is the system we normally specify.

What is the difference between the self-leveling systems and the topcoat?

CK96 and CK97 are three- and four-component polyurethane mortar systems: they flow out to form the body of the floor, build 3–11 mm and set the finish. PU3600 is an abrasion resistant polyurethane topcoat supplied as a three-component kit at A:B:C = 5 : 2 : 3; it goes on as the final wear layer over a prepared base at about 0.1 kg/m² per pass.

What is a polyurethane floor coating made of?

It is a multi-component reactive system, supplied as separate components and mixed on site. CK96 ships as a four-component kit (A:B:C:D = 2.97 : 2.85 : 19.78 : 0.5, 26.1 kg), CK97 as a three-component kit (A:B:C = 2.65 : 2.85 : 30, 35.5 kg) and PU3600 as a three-component kit. WPU100 is a two-component waterborne topcoat built on a waterborne polyurethane emulsion with hardener and additives. Tell us the load and the substrate, and we confirm which polyurethane floor coating formulation suits the floor.

Is a water-based polyurethane suitable for floors?

Yes. WPU100 is a two-component waterborne polyurethane topcoat at A:B = 5 : 1. It is water-dilutable with low VOC and low odour, so it suits occupied buildings, and its measured figures are adhesion grade 1, hardness above 4H and abrasion below 0.04. Its surface dry is 6 hours or less and its hard dry 36 hours or less. Mix only what can be used within 60 minutes, and avoid applying above 80 % relative humidity.

Send us the floor area, the substrate and the load it carries, and we will confirm the system, the coverage and the price. Request the TDS for any polyurethane floor coating on this page.