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Wallpaper seams come loose when the edges received too little paste, or when the paste was already dry by the time the strip was pressed on.

You can plaster old walls perfectly well in a renovation, as long as the preparation is right: loose layers off, glue residue gone, chases and holes filled.

Plastering indoors in winter is possible, as long as the room and the wall stay above 5 °C and the damp air can escape.

The biggest advantage of non-woven wallpaper is that it does not stretch when wet, but it will not hide a poor wall surface.

Indoors you come across four types of plaster: paint-ready plaster, skim coat (also called film coat), textured plaster such as schuurwerk and spachtelputz, and decorative plaster.

You can paint paintable non-woven wallpaper, and repaint it later: there is no fixed limit on the number of times.

Plaster a ceiling when it really needs to be flat, spray it when it is already flat and only needs paint, and choose renovation fleece for seams or cracks that keep coming back.

Choose paintable non-woven wallpaper for living rooms and bedrooms, and fibreglass wallpaper for walls that take knocks or where you want texture.

A repair in spachtelputz almost always stays visible, because grain, trowel pattern and absorbency cannot be matched; if that bothers you, have the whole wall plastered smooth.

No, painted fibreglass wallpaper on the wall is not unhealthy according to manufacturers: the fibres are fixed in paste and paint, and itching only arises when the material is worked.