After builders cleaning is different from any other clean because of the dust. Plaster and cutting dust is extremely fine, it stays airborne for hours, and it settles on every horizontal and vertical surface including places you would never normally clean.
The other difference is risk. New finishes are at their most vulnerable in the first weeks: uncured sealants, unsealed stone, fresh grout, protective films on glass and appliances, and paint that has not fully hardened. The wrong product or pad at this stage does permanent damage.
The short version
- Expect two stages minimum: a rough clean and a final detail clean
- Vacuum with filtration before any wet work, or you make mud
- New grout, stone and sealant need gentle, pH-neutral treatment
- Paint splashes and adhesive residue need mechanical, careful removal
- Allow dust to settle overnight between the last works and the final clean
Why one clean is never enough
Dust that is airborne when you finish cleaning will land afterwards. If the final clean happens the same day as the last cutting or sanding, the property will look dusty again by morning.
The practical approach is a rough clean once the heavy work is finished, which removes debris and the bulk of the dust, then a final detail clean at least a day later once everything has settled.
- Stage one: debris removal, bulk dust, protective sheeting removal
- Stage two: full detail clean of all surfaces, glass and fittings
- Stage three where needed: sparkle clean immediately before handover
Dust removal comes before anything wet
Wiping fine dust with a damp cloth turns it into a paste that smears into every texture and grout line. The order is always dry removal first: vacuum with proper filtration, working top down, including walls, ceilings, frames and inside every cupboard.
Only once the dust load is gone should wet cleaning start, and even then with frequently changed water. Dirty water on a new finish leaves a film that is harder to remove than the original dust.
Protecting new finishes
Fresh grout continues curing for days and is porous while it does. Acidic cleaners will attack it, and aggressive scrubbing will pull it out of the joint.
Natural stone should be treated as unsealed unless you know otherwise. Acidic products will etch limestone, travertine and marble on contact, and the damage is physical rather than a stain, so it cannot be cleaned off afterwards.
- pH-neutral cleaner on stone, new grout and sealed timber
- No abrasive pads on baths, shower trays, chrome or coated units
- Remove protective film promptly, before adhesive bakes onto glass
- Keep water away from unsealed timber edges and MDF cut ends
Paint, adhesive and plaster residue
Splashes need mechanical removal, done carefully. On glass, a new blade held nearly flat with plenty of lubrication works well; a dry blade or a worn one will scratch.
Silicone smears, adhesive residue and label glue usually need a solvent, tested first in a hidden spot. Some plastics craze on contact with solvents, and once that happens the fitting has to be replaced.
Floors and carpets after building work
New carpet fitted during a build often gets more soil in a fortnight than it would in a year of normal use, because dust is walked into fresh pile. Vacuuming several times with a good machine removes far more than one pass, and it should be done thoroughly before any wet cleaning.
Hard floors may have grout haze, plaster splash or adhesive residue. Each needs a different treatment, and getting it wrong on stone is the most expensive mistake in the whole process, so it is worth identifying the material first.
Planning and sequencing
Book the final clean after every trade has finished, including snagging. A joiner returning to adjust a door will produce dust on a clean property, and then the clean has to be repeated.
Confirm in advance who is removing waste. Rubble, offcuts and packaging are a removal job with disposal costs, not part of a cleaning price, and assuming otherwise is the most common cause of a dispute on handover day.
- Confirm all trades are finished, including snagging visits
- Agree who removes construction waste and packaging
- Ensure power, water and lighting are available on site
- Allow settling time between last works and the final clean