Applying filler to different substrates
Different substrates require different preparations and application methods. Here are some tips that are important to keep in mind.
Applying filler to corner beads
Outside corners are often subjected to knocks and bumps. It is a good idea here to use plastic and paper corner beads. Apply filler to the corner using a filler labelled with EN 13963, approximately 5–6 cm wide on each side and 1 mm thick, and then press the bead firmly into place and apply filler immediately. After drying, apply filler to achieve the desired result.
Applying filler in wet rooms
Wet room filler must always be used in wet rooms, whatever the substrate. Wet room filler is suitable for both joint filling and fine smoothing, and is also available as roller filler. Make sure you always follow the decorating industry’s rules for wet rooms.
Applying filler to woodwork
The substrate must be clean and dry before filling commences. Untreated wood, metal or MDF must always be primed before filler is applied. Then apply filler to achieve the desired result. When sanding, use sandpaper with a grain size of 180 or finer. Remove dust before painting.
Applying filler outdoors
The substrate must be clean, dry and solid before filling commences. Use a product designed for outdoor use. Bear in mind that the climate affects the drying times, and make sure that it does not rain on filled surfaces within 12 hours. Avoid applying filler on horizontal surfaces. In some cases, priming may be needed before filler is applied..
Applying filler to painted surfaces and wallpaper
The substrate must be clean, dry and solid. Wash painted surfaces before applying filler. Old wallpaper may need to be removed before filler is applied, to avoid blisters in the old wallpaper.
Pre-fill
Repairs to cracks or holes on all kinds of substrates. If there are large, deep holes, it can be a good idea to use a so-called plasterboard patch to conceal the hole. Bear in mind that the drying time can be long if the holes are large and deep. If this is the case, it can be a good idea to use a gypsum based filler of the type DM20, 40 or 60.
Design filler
A simple way to achieve unique ceilings and walls in any shade you like. The substrate must be clean, dry and solid. Old wallpaper may need to be removed or have primer applied, to avoid blisters in the old wallpaper. Apply the first layer of filler a little roughly, with plenty of edges and unevenness. When it has dried, scrape or sand off all the uneven areas. Then apply filler a little more thinly and finely to achieve a smooth wall. When it has dried, scrape or sand off uneven areas and colour variations before you seal the surface with 2–3 coats of Dalapro TopCoat.
