Both systems turn a bare concrete or screed floor into a sealed, cleanable surface, but they behave differently once traffic and light get involved. Choosing the wrong one usually shows up as yellowing or premature wear within the first year.
Epoxy builds a hard, chemically resistant film that suits areas exposed to oils, cleaning chemicals or occasional spillage. It is the usual choice under workbenches, in plant rooms and anywhere a floor needs to shrug off contact with solvents rather than just foot traffic.
Polyurethane stays more flexible and resists UV yellowing far better than epoxy, which matters near windows, roller shutters or any area that sees daylight. It also tends to recover better from minor impact without cracking at the surface.
Neither system forgives a poorly prepared substrate. Moisture testing, mechanical grinding and filling of laitance are what actually determine service life, and skipping them is the most common reason floor coatings delaminate within months.
Both can last many years with correct preparation. Epoxy tends to win on hardness and chemical resistance, polyurethane on flexibility and colour retention in daylight.
Often yes, as a refresh coat, provided the existing epoxy is sound, clean and properly keyed — we test adhesion before committing to that approach.
Both benefit from good ventilation while curing, and some formulations carry noticeable odour, so we plan application around occupancy and access.
Describe how the floor is used and we will recommend epoxy, polyurethane or a hybrid build-up.
Epoxy and polyurethane solve different problems — chemical resistance against daylight stability — and the floor's real use should decide between them.
Speak to a Hampshire commercial decorating contractor that turns up, communicates clearly and delivers a finish that lasts.
