Drylining or wet plastering — which is better for my walls?

These are the two main ways to get a finished internal wall. Here is how they compare in practice.

How each method builds the wall

Drylining uses plasterboard as the surface. The board is fixed to the wall either with dabs of adhesive (dot-and-dab) straight onto masonry, or screwed to a frame of timber battens or metal studs. The joints are then finished one of two ways: tape and joint (filling and taping the seams to leave the board paint-ready) or a thin plaster skim over the whole surface. Either way, the structural surface is the board, not wet plaster built up on the wall.

Wet plastering applies plaster directly to the masonry in coats: typically a backing coat of hardwall, bonding or browning, then a finishing skim. The plaster bonds to the wall and becomes a dense, continuous, solid surface with no void behind it. This is the traditional method and what older solid walls and many renovated rooms are finished in.

Speed, mess and drying compared

Drylining is generally the faster, cleaner route. Boarding a wall and taping the joints involves far less water and waste than wet plastering, so the room dries out quicker and there is less disruption — useful in occupied homes and on tight schedules. Wet plastering brings a lot of water into the building, makes more mess, and the wall must be left to dry thoroughly before decorating, which can mean a week or more depending on thickness and conditions.

Indicative comparison for UK interiors. Actual results depend on board type, fixing method and finishing choice.

Finish, durability and insulation

A skimmed dryline and a wet-plastered wall can both end up as a flat, smooth, paint-ready surface — to the eye they look the same once decorated. The differences are physical. Wet plaster is denser and more robust: it resists knocks, holds heavier fixings better in the masonry behind, and there is no void to sound hollow. Drylined walls are lighter and quicker but the board can be dented or punctured more easily, and fixings into a void need the right cavity anchors.

Drylining's big advantage is insulation. Insulated plasterboard (board bonded to a layer of insulation) can be dot-and-dabbed or framed onto a cold external wall to improve its thermal performance in one operation — something wet plaster on the masonry cannot do. On a solid-wall house being upgraded, insulated drylining is a common way to warm up cold rooms, with the trade-off that it loses a little floor area and covers the original solid surface.

Which should you choose?

Choose drylining when you want speed and minimal drying time, when you need to add insulation to a cold external wall, or when working over uneven or difficult backgrounds where boarding gives a quick flat surface. It suits renovations on a schedule and rooms where you want to improve thermal comfort.

Choose wet plastering when you want a solid, dense, hard-wearing traditional wall with no hollow void, where you will hang heavier items, or where you are matching the feel of existing solid plaster. It is also the route for old solid-wall buildings (using lime, where breathability matters) and anywhere robustness matters more than speed. Many jobs mix the two — drylining a stud partition or a cold external wall, wet-plastering solid internal masonry — choosing each method where it plays to its strengths.

On older solid-wall homes the choice carries an extra warning. Dot-and-dab drylining on a solid external wall can create a cold cavity behind the board where warm, moist room air reaches the cold masonry and condenses out of sight, which can lead to hidden damp and mould — a known risk that needs careful detailing, perimeter sealing or an insulated-board approach to manage. Wet plaster bonded straight to the wall avoids that void, but if the wall is a breathable solid-wall construction it should be plastered in a breathable system (lime), not sealed with gypsum. So on a period property the decision is not only drylining versus wet plaster but also whether the chosen build keeps the wall breathing and free of hidden condensation. On a modern cavity-walled house these risks are far lower and the choice can be made more freely on speed, insulation and the feel you want.

Fixings and future-proofing are worth a final thought, because they affect daily living more than people expect. On a wet-plastered solid wall you can fix shelves, radiators, wall units and TV brackets more or less anywhere with ordinary wall plugs into the masonry behind. On a drylined wall you are fixing into board over a void, so heavy items need to hit a stud or dab, or use proper cavity fixings rated for the load — and a heavy unit fixed only into plasterboard will eventually pull out. If you know in advance where heavy fixings will go, a plasterer or carpenter can add timber noggins behind the board to take them. None of this makes drylining unsuitable; it just means a drylined room rewards a little planning about what will hang where, whereas a solid wet-plastered wall is more forgiving of changing your mind later.

Frequently asked questions

Sources & further reading

• British Gypsum — drylining and plasterboard systems
• Energy Saving Trust — solid wall insulation

Figures on this page are typical UK ranges drawn from published sources and depend on your specific room. They are guidance, not a quotation.