Finishing a wooden house versus a panel block flat: what differs

How the wall surface and its preparation differ

In a wooden house the wall behind the old wallpaper is usually timber boarding, sometimes with a layer of reed matting and lime plaster from an earlier renovation. The surface is rarely flat: boards shrink, plaster cracks along the joints, and corners are out of square by a centimetre or more over a wall's length. Preparation means checking what is actually structural, removing what has come loose, and deciding whether to level with plasterboard or accept some unevenness and work with a flexible filler instead.

A panel flat has a concrete or gas-silicate wall that is flat by comparison, but the real weak points are the joints between panels and around window openings, where the original sealant has often dried out and shrunk. Preparation here is less about levelling and more about finding and treating those joints properly, so a crack does not simply reappear through the new paint within a year.

This is where the two jobs part ways from the first hour. A wooden house often needs plasterboard lining to get a usable flat surface, which is one of the jobs we quote separately. A panel flat more often needs targeted joint repair and a skim coat, not a full relining.

What role moisture plays in each type of building

Wooden houses breathe. The timber and any lime-based plaster absorb and release moisture with the seasons, which is exactly why vapour-tight materials such as ordinary gypsum filler or vinyl wallpaper can cause trouble: moisture gets trapped behind them and the timber underneath starts to rot unseen. The right choice is breathable, lime-based or mineral products, especially in Nõmme houses that still have their original wall build-up.

Panel flats behave the opposite way. The concrete itself does not breathe in any meaningful sense, so the moisture problems that show up are almost always local: condensation on cold external walls, a leaking bathroom joint, or damp coming through from a neighbour. District heating keeps most panel flats dry and stable through winter, which is one thing working in their favour.

Get this wrong and the finish fails from behind, not from the front, which is why the underlying moisture behaviour has to shape the material choice before appearance is even considered.

Which materials and techniques each building type calls for

For a wooden house, we look at breathable options first: lime plaster or lime-based fillers, breathable emulsion paint rather than plastic-based paint, and plasterboard only where it is dry-lined with a ventilation gap rather than glued directly to timber. Floors are often original softwood boards, which usually reward sanding and refinishing over covering them up, something worth discussing under our flooring work.

For a panel flat, standard gypsum-based filler and a skim coat work well on the concrete itself, but panel joints need a flexible, movement-tolerant filler or tape, not a rigid one that will crack again. Paint choice is more flexible here since there is no timber underneath to trap moisture behind it.

In both cases, plasterboard has its place, but for different reasons: to correct genuinely uneven timber walls in one case, and to hide services or improve sound insulation between neighbours in the other.

• Wooden house: check for rot before filling over anything
• Wooden house: use breathable, lime-based fillers and paint
• Panel flat: treat panel joints with flexible filler or tape, not rigid filler
• Panel flat: skim coat over concrete once joints are stable
• Either type: plasterboard only where the reason for it is clear

Which mistakes come up most often

In wooden houses, the most common mistake is sealing a wall with vinyl wallpaper or plastic paint without checking what is underneath first. It looks fine for a season or two, then damp patches or a musty smell appear, and by the time anyone investigates, timber behind the finish has softened. The second common mistake is filling large gaps with rigid filler that simply cracks again as the house moves with the seasons.

In panel flats, the recurring mistake is painting straight over an old, cracked panel joint without cutting it out and refilling it properly. The crack returns within a year, usually along exactly the same line, because the underlying movement between panels was never addressed.

Which approach we would usually recommend

For a wooden house in Kalamaja or Nõmme, our starting point is almost always to open up a small area first and see what condition the timber and old plaster are actually in, rather than guessing from the wallpaper pattern. Breathable materials cost slightly more but avoid a repeat job in a few years, which makes them the better economy over time.

For a panel flat, we would usually recommend spending the effort on the joints and skim coat rather than on premium paint, since paint quality matters far less than a stable surface underneath. Our painting and decorating work, priced from 12 € per job, covers exactly this kind of targeted finishing once the substrate is sound.