Wall Finishes for Wet Rooms: Tile, Paint or Panels

Not every part of a bathroom, shower or kitchen wall takes the same load. Where tile, moisture-resistant paint, panels or microcement make sense, and what must go beneath.

When choosing a wall finish for a wet room, the first question should not be “which material looks good?” but “how much water will this wall get?”. The wall inside a shower takes direct water every day, the wall behind a basin gets splashes, and the wall by the bathroom door only sees steam. The kitchen is different again: alongside water there is grease, heat and frequent cleaning. Choosing materials zone by zone saves money and prevents future problems.

Dividing the wall into zones

In practice it helps to distinguish three zones in a wet room:

• direct water zone: shower walls and the area around the bath, where water hits the surface under pressure and for long periods;
• splash zone: behind the basin and toilet, the kitchen splashback, where drops and steam are in frequent contact;
• dry zone: bathroom walls away from water and areas near the ceiling, affected only by humid air.

In the first zone the material and the waterproofing system beneath it must be fully watertight. In the third, a paint designed for wet rooms may be enough, provided ventilation is good.

Tiles: the most versatile option, but part of a system

Ceramic and porcelain tiles are the facings that best withstand direct contact with water. But while the tile itself is waterproof, the joints are not fully so. That is why in a shower zone there must be a waterproofing layer beneath the tiles: a liquid or cement-based membrane on the wall, with reinforcing tape and collars at corners and pipe outlets.

Things to consider when choosing tiles:

• large-format tiles mean fewer joints and easier cleaning;
• small mosaics are handy on curved surfaces and in niches, but there is more joint area;
• in the shower zone, grout must resist moisture and mould; epoxy grout can be considered in heavily used areas;
• the junction between tiles and the bath or shower tray is sealed with sanitary silicone, not grout.

Moisture-resistant paint: where it is enough

In the dry zone and on the ceiling of a bathroom, paint made for wet rooms is a practical and economical choice. Such paints are scrub-resistant and contain anti-mould additives. They are not designed to withstand running water, though: painting a shower wall usually ends in early peeling and dark marks.

If you are going to use paint, the substrate must suit it too: moisture-resistant filler, the right primer and moisture-resistant plasterboard. The most important condition is working ventilation: without an extract fan, no paint will keep mould at bay for long.

Panels: glass, compact laminate and PVC

Toughened glass panels create a seamless, easy-to-clean surface on kitchen splashbacks and shower walls. The back can be colour-coated. Measurements must be precise, since socket and outlet holes are cut during manufacture.

Compact laminate (HPL) panels are thin, rigid and water-resistant. They are often used on bathroom walls and in public washrooms. Joint profiles and properly sealed edges are essential.

PVC panels are a cheap, quick solution, but they dent easily, look basic and moisture can remain behind the joints. They are usually chosen for temporary or utility spaces.

Microcement gives a seamless look, but in wet zones it should only be used as a complete system approved by the manufacturer for that purpose, with a protective sealer.

Kitchen splashback: resisting water, grease and heat

In a kitchen the splashback material must withstand grease stains and cleaning products. Tiles, toughened glass, compact laminate and quartz composite are common choices. Near the hob, avoid heat-sensitive materials, and with a gas hob follow the manufacturers’ safety clearances. The junction between splashback and worktop is sealed with sanitary silicone or an upstand profile.

Care and longevity

• Squeegeeing the wall after a shower reduces limescale marks and mould growth.
• Check joints from time to time: darkened or cracked grout should be renewed.
• Silicone joints age, and replacing them is normal maintenance.
• Abrasive and strongly acidic cleaners damage grout and some panel surfaces.

In apartment and private house renovations Zaferoğlu İnşaat plans bathroom and kitchen walls by water zone and considers finish choices together with waterproofing and ventilation. Mark the shower zone on your plan and we can sort out which walls need tile and where moisture-resistant paint is enough.