Wall Finish Decision Preparation Checklist

Walk each wall with a light held close to the surface so it rakes across it, and note where the wall is visibly uneven, wavy or patched.

Raking light reveals undulation that is invisible head-on, and undulation determines how much preparation a smooth or sheened finish needs.

Note which walls sound solid and which sound hollow when tapped, and pass that observation to a qualified professional rather than concluding anything from it yourself.

The answer affects fixings, insulation and preparation, but the observation is a starting point rather than a finding.

What a wall is built from and whether it plays a structural role must be established by a qualified professional, not inferred from tapping.

Record any cracking you can see, noting where it runs, whether it crosses a junction and whether it appears to be widening over time.

A written record with locations is exactly what a professional needs, and it is much harder to reconstruct after decoration.

Do not interpret cracking yourself; ask a qualified professional to establish the cause before any wall finish is chosen or applied.

Look at a chipped edge or behind a switch plate and note how many layers of previous decoration are visible, since build-up affects what a new finish can sit on.

Heavy accumulated layers can be unstable, and the question of whether to strip is better raised before a finish is chosen.

Look for wallpaper under paint, textured coatings or lining paper, and write down where you found evidence of each.

Painted-over paper is common in older properties and changes both the preparation and how the work has to be sequenced.

Note whether the existing plaster feels sound, drums when tapped, crumbles at an edge or leaves dust on your hand, and describe what you found rather than naming a cause.

Describing the symptom keeps the record useful; naming the cause is what the professional is being asked to do.

Ask what preparation each shortlisted finish assumes has already been carried out, because the finish and the preparation are separate pieces of work.

Finishes are often described as if they will be applied to a perfect surface, which few existing walls are.

Ask who is responsible for making good after other trades have opened up or worked on a wall, and record the answer in writing.

Making good falls between trades more often than any other task, and it directly affects how a finish looks.

Ask what happens if a wall turns out to be in worse condition once existing coverings are stripped, and how that decision would be reached.

Agreeing the process in advance avoids a decision being made on the spot without you present.

Ask whether the substrate needs sealing or priming before this finish, and whether that preparation changes the appearance of the result.

Absorbency differences between patched and original areas are a common cause of patchy-looking finished walls.

Discuss with a qualified professional whether an older wall would be better skimmed, lined or overboarded, and record what they advise for each wall.

The three approaches produce different results and different thicknesses, and the choice is rarely the same across a whole room.

Which approach suits a particular wall is a judgement for a qualified professional after they have examined it.

Note that adding thickness to a wall affects reveals, architraves, skirtings and switch plates, and ask what would happen at each of those junctions.

Overboarding solves a surface problem and creates a detailing problem, which is much easier to resolve before work starts.

Decide how much sheen you want on each wall, remembering that a higher sheen reflects more light and reveals more of the surface beneath it.

Sheen and substrate condition are directly linked, so this decision belongs with the preparation conversation rather than after it.

Try colour samples on more than one wall of the same room, because a colour behaves differently on the wall facing the window and on the wall beside it.

A single sample patch is judged in one light condition and then applied to four walls that receive four different ones.

Make sample patches large enough to judge and keep them away from the existing colour, since the old shade distorts how the new one reads.

Small patches surrounded by an existing colour are the least reliable way to choose, and the most commonly used.

Look at the samples after dark under the room's own lighting, since lamp colour changes a wall finish as much as daylight does.

Rooms used mainly in the evening should be judged mainly in the evening, which is rarely how sampling happens.

Consider whether a textured or applied finish will read as intended across a whole wall rather than on a sample board held at arm's length.

Texture that looks subtle on a board can become the dominant feature of a room at full scale.

Note whether ceilings, woodwork and doors are being redecorated too, because a fresh wall finish makes tired paintwork beside it obvious.

Scope creep at this point is common, and it is far easier to decide deliberately than part-way through the work.

Decide where each finish stops, whether at a corner, a trim or partway across a wall, and sketch it roughly rather than leaving it to be resolved during the work.

A finish stopping in an unconsidered place is one of the most visible signs that decisions were made in a hurry.

Note every external corner in the room and ask how the finish would be protected there, since corners take the majority of knocks.

Corner damage is the most common early failure in hallways and rooms with circulation through them.

Ask what happens where the wall finish meets the floor, and decide whether skirting is being kept, replaced, altered in height or omitted altogether.

Skirting decisions affect the wall finish, the flooring and the order the work has to be done in.

Consider how the finish meets window reveals and whether it continues into them or changes at the opening.

Reveals catch strong side light, so any change of finish or texture is unusually visible there.

Ask how two different wall finishes would meet within the same room, and whether a trim, a shadow gap or a simple overlap is intended.

Panelling, tiling and applied finishes all need a considered stopping detail, and the default is usually the worst option.

Note where a wall finish turns onto a ceiling or a soffit and ask whether that junction is meant to be visible or concealed.

Ceiling junctions in older properties are rarely straight, which affects whether a crisp line is achievable.

List everything currently hanging on these walls and everything you intend to hang, since some finishes are difficult to fix into or to repair afterwards.

Fixing into an applied or delicate finish after completion is exactly when damage happens.

Note every socket, switch, thermostat, vent and outlet on each wall, and ask whether their positions are staying as they are.

Moving any of them changes the preparation, the finish and the sequence in which trades attend.

Ask a qualified professional to establish what runs within the wall before any fixing or chasing is planned, and never assume from the position of a socket.

Cables and pipes do not always follow expected routes, particularly in properties that have been altered over time.

Establishing what lies within a wall is work for qualified trades, and no fixing position should be decided on assumption.

Note where radiators, rails and brackets sit against the wall and whether they are being removed, refitted in the same place or replaced.

Refitting into old fixing points constrains the finish, while new positions leave holes that need making good.

Consider whether a heavy item such as a large mirror, a television or shelving would need support built in behind the finish, and raise it early with a qualified professional.

Support behind a finish can only be added before it is applied, which makes this an early decision rather than a late one.

Whether a wall can support a particular item, and how, must be determined by a qualified professional before anything is fixed.

Note where furniture backs against a wall and whether that contact would mark or rub the finish over time.

Sofa backs, bed heads and dining chairs produce a consistent line of wear at a predictable height.

Note any staining, bubbling, salt deposits or musty smell, where it appears and whether it changes with the weather, and report it rather than interpreting it.

Seasonal behaviour is one of the most useful things an owner can contribute, because a professional visiting once cannot observe it.

Ask a qualified professional to establish the cause of any moisture; owner observations are evidence, not a diagnosis.

Note which walls are external, which are below ground level and which back onto a bathroom, kitchen or utility area, and pass the list on.

The position of a wall in the building shapes which questions are worth investigating first.

Record whether condensation forms on any wall in cold weather and in which corners or reveals it appears first.

The pattern and location tell a professional considerably more than the fact that condensation occurs.

Ask a qualified professional to establish the cause of any moisture before a wall finish is chosen, because decorating over an unresolved cause usually fails.

Finishes applied over active moisture tend to fail visibly, and the failure is then blamed on the finish.

No wall finish should be selected for an area affected by moisture until a qualified professional has investigated the cause.

Note whether any wall feels noticeably colder to the touch than the others, and mention it when discussing finishes for that wall.

Surface temperature differences affect where condensation forms and are easy for an owner to notice.

Ask how this wall finish is cleaned when a mark appears, and whether wiping it leaves a patch that is more visible than the mark was.

Some finishes cannot be cleaned locally at all, which is worth knowing before choosing one for a hallway.

Ask whether a damaged area can be touched in locally or whether the whole wall has to be redone for the repair to be unnoticeable.

Whether the unit of repair is a patch or a wall changes how a finish suits a busy household.

Keep a written record of the finish reference and the room it was used in, so that a later repair can be made from the same material.

Records kept on the tin do not survive; records kept with the property papers usually do.

Ask whether leftover material can be stored for later use and what would make it unusable, such as frost, heat or an opened container.

Leftovers kept in an unheated garage are frequently useless by the time they are needed.

Consider whether the finish will still look intentional in the places that inevitably get scuffed, such as behind doors, along a hallway and beside a staircase.

Choosing a more forgiving finish in circulation areas is a common and quietly effective decision.