How to keep dust and debris under control during a flat renovation

Which jobs throw up the most dust

Dry sanding of plasterboard joints is the worst offender. Fine gypsum dust is light, it hangs in the air for hours, and it finds its way through gaps you did not know existed, including under doors and through keyholes.

Cutting tile or removing old floor screed with an angle grinder produces heavier dust that settles faster but is sharper and gets into flooring seams and textiles. Demolition, such as knocking off old plaster from a brick or limestone wall in a pre-war Kalamaja building, adds coarse debris and often a fair amount of old paint or lime dust as well.

Wet work, like tiling with adhesive or skim-coating plaster, produces far less airborne dust but leaves splatter and residue that needs wiping rather than vacuuming. Knowing which stage you are at helps you choose the right containment before you start, not halfway through.

How to seal off the work area before you start

Close the door of the room being worked on and tape a sheet of polythene (0.15–0.2 mm builder's film) over the whole doorway, including the frame, using masking tape or duct tape on the wood, not the wallpaper. If there is no door, hang a double layer of film with a zip-style dust barrier or simply an overlapping slit down the middle.

Seal any through-wall vents, unused fireplace openings and gaps around pipework with tape or damp cloth stuffed loosely into the gap. In panel blocks the ventilation duct often connects several flats, so a sealed grille in the work room stops dust being pulled into a neighbour's kitchen.

If the renovation covers more than one room, work through them in sequence with the sealed boundary moved along as you go, rather than opening the whole flat to dust at once. This is slower but it means you are living in a clean part of the flat throughout.

Ventilation and creating negative pressure

Open a window in the sealed-off room and run a box fan or an old furnace fan facing outward in the lower half of the opening, so air is pulled out of the room rather than pushed further into the flat. This creates a slight negative pressure that draws dust towards the window instead of under the door seal.

Turn off the flat's supply ventilation or cover the supply valve in that room while sanding, otherwise the mechanical system will simply carry dust to other rooms. Do not run the extractor fan from the kitchen or bathroom as your main dust extraction, since it is not built for the volume of fine dust that sanding produces.

On a still day with no wind, a box fan alone may not clear the air fast enough between sanding passes. Pause every ten minutes or so, let the fan run for a couple of minutes with the door sealed and the window open, and only then step back into the room.

Protecting floors and furniture that stay in place

Lift what can be lifted out of the room. For everything else, cover furniture with plastic sheeting taped at the base rather than draped loosely, since draped sheets let dust settle underneath at floor level.

On floors you intend to keep, lay builder's paper or corrugated cardboard first, then a plastic film taped at the skirting, and add a layer of hardboard in any area where you will be walking with tools or dragging materials. Three thin layers survive far better than one thick one when something gets dropped.

In older buildings with original wooden floors in Kalamaja or Nõmme, avoid taping directly onto varnished boards for more than a few days, as some tapes lift the finish when removed. A painter's low-tack tape under the main tape solves this.

• Seal the doorway with builder's film before any sanding or demolition begins
• Run a fan to pull air out of the window, not further into the flat
• Cover or seal ventilation grilles in the work room
• Lay paper, then film, then hardboard on floors that stay
• Wrap furniture with taped plastic rather than a loose sheet
• Bag dust and rubble as you go rather than letting it accumulate
• Check your building's rules on lift use and waste collection times before you start

Collecting waste and getting it out of the building

Construction and demolition waste is not household rubbish and should not go into the flat's ordinary bins. In Tallinn it generally needs to go either to a sorting station or be collected by a skip or bag ordered for the job; the exact rules depend on the quantity and on your apartment association's arrangements, so it is worth checking with your korteriühistu board or the city's waste guidance before the first skip lands outside.

Bag dust and small debris as you produce it, in heavy-duty rubble sacks, rather than sweeping it into a pile that then sits in the room for days. This keeps the volume of loose material in the flat to a minimum and makes the final clean-up much shorter.

For a stairwell shared with neighbours, carry sacks down rather than dragging them, and time larger loads for hours when the lift is free and neighbours are less likely to be affected. If the job includes plasterboard partition work or floor replacement, our flat renovation and flooring services generally include clearing the resulting debris as part of the job.

The most common mistake, and when to call in help

The mistake almost everyone makes on a first renovation is sealing the room but not the ventilation, then wondering why a fine grey film appears on shelves two rooms away by the second day. Sealing the door without addressing airflow through ducts and vents simply relocates the dust rather than containing it.

If the flat has central or shared ventilation you cannot isolate, if the ceiling is being opened up rather than just a wall, or if the job involves more than a day or two of dry sanding across several rooms, it is usually more practical to bring in someone set up for it. Plasterboard work done by a trade crew, from 28 € per job, includes dust control as standard, and a fixed-price flat renovation from 180 € accounts for containment and waste removal in the quote rather than leaving you to work it out mid-job.

If in doubt about whether a job is small enough to manage yourself, a call-out visit at 25 € within Tallinn, deducted from the bill if the work goes ahead, is usually enough to get a straight answer and a fixed quote for the parts that are not worth doing alone.