The halls and corridors of hospitals, schools, large apartments and office buildings, on the other hand, are subjected to intensive use. Only the more resistant coatings are practical in these situations. Walls of individual or small offices may be coated with an eggshell finish. Larger offices, depending upon the type of use, may require at least a satin. For recoat work latex paints are preferred because of fast dry and inoffensive odour.
Any flat finish is suitable on ceilings.
The question of painting acoustical tile is frequently raised. Conventional flat finishes, regardless of type, should not affect their function to any extent. Wear-resistant epoxies and urethanes are recommended for corridor walls. In hospitals and schools where there will probably be considerable impact and abrasion use of high-build coatings is advisable. These materials are particularly suitable for application to concrete block walls because they give a smooth tile-like coating that can be repaired if damaged.