We were asked to make a timber cladding wall look more in keeping with the other decoration in the property.
The timber had never been treated so it required a light sand. This was carried out by hand with Mirka Goldflex, which is a flexible sanding sheet. For this project we used 150 grit. The surface was then vacuumed with a Mirka 915 GB extractor and a soft brush, paying particular attention to the grooves. Krud Kutter Gloss off was then applied to the surface as a cleaner. This removes any dirt and will also remove any remaining sheen which could interfere with the new coatings.
Surface defects were filled with Lightweight Red Devil filler. Where necessary this was sanded and re cleaned. Where large cracks appeared between the timber panels Screwfix Anti crack acrylic was applied.
The timber had a lot of knots and resinous areas. It is imperative to apply two coats of a suitable primer on the knots to prevent them re-appearing through the new paint. On this occasion we used Zinnser BIN, which is a shellac based primer. The solvent for BIN is Meths, however it is just as easy and cheaper to clean brushes in Virosol.
The timber was primed completely with Zinnser Coverstain using a 2.5 inch Red Frost brush. This is a high build primer undercoat which provides a perfect base for new paints. It is very important to add Owatrol paint conditioner to Coverstain. The paint is very heavy and will not flow easily on its own. The quantity of Owatrol depends on the temperature and other factors.
As it was a large expanse of wall the client wanted a flat finish to compliment the other parts of the room. Little Green Intelligent Mat was chosen as it is easy to clean and has low sheen. Two coats were applied with a 2.5 inch Fox brush.
The materials with Zinnser BIN applied to knots
Zinnser Coverstain and Red Frost brush
Completed with Little Green Intelligent Mat, colour Cerviche