How to plaster a room

plastering-jobsPlastering is a skill that takes practice and experience. Colours Complete painters and decorators have over 20 years of plastering experience. A standard size room for a professional will take 1-2 days depending on the size of the room and the plaster will not be ready for painting until at least 1-2 days after application.

To ensure the plaster does not dry out before you have had a chance to use it, to avoid damp patches and cracks why not call on Colours Complete to provide a free quote to do the job for you.

Here are some tips on how Colours Complete would plaster your rooms:

What you will need to plaster walls or ceilings?

Plastering trowel
Larger mixing bucket
Paddle accessory and power drill
Multi-finish plaster
Angle beading for any external corners
Scrim tape for any board joints
Dust sheets

Preparation steps

Clear the area of furniture and spread dust sheets over the floor to protect it. If you are plastering over new plasterboard, put scrim tape over all the board joints and screw metal reinforcing angle bead to all external corners.

Plastering the wall – Step by Step
Mix the Plaster

Mix the plaster according the instructions on the bag. Always add the plaster to the water and use a clean mixing bucket. It’s essential to mix the powder and water thoroughly so that you have a thick, creamy consistency…

Plaster can set in minutes so only mix an amount you can use immediately. Don’t add new plaster to an older mix and don’t add water to the plaster to try and make it runnier to use.

Apply the Base Coat

Scrape a trowel full of plaster off the mixing board and onto your hawk. Next, transfer half the plaster to your trowel. Keep your trowel wrist straight and use a flicking action with your ‘hawk hand’ to move the plaster from hawk to trowel.

Working from the bottom of the wall, use smooth strokes to press the plaster onto the wall. Gradually narrow the gap between the trowel’s top edge and the wall as you move the tool upwards. Always keep the trowel at a slight angle to the wall at the end of the stroke.

Work over the whole area aiming to apply a base coat – don’t worry about any uneven areas or holes at this stage. This coat should be around 2mm thick.

Smooth the Surface

Clean around the edges of the wall with a wet paintbrush to remove lumps and lines of plaster that are on the ceiling or adjacent walls.

The next stage is to level and smooth the surface but this can only be done when the plaster has hardened slightly but is still pliable. Use your trowel at a very shallow angle to the wall and work over the surface smoothing the surface.

Drying and Polishing

Leave the plaster to dry once more – for around 30 to 40 minutes. Now the plaster can be polished. Wet the face of your trowel and flick water onto the wall with a large paintbrush. The idea is to provide just enough lubrication for your trowel to float over the surface and fill tiny holes and imperfections. Work in regular sweeping strokes and finish with long continuous strokes across the wall.

Wash your mixing board and tools as soon as you’ve finished work. Don’t keep opened plaster bags for more than a couple of weeks.

Plastering can be difficult, Colours Completes’ experts can provide you with a free, no obligation quote, just email us or call 01453 752574