How to Paint New Plaster

Painting new plaster is a great feeling, a bit like walking in freshly fallen snow. The smooth surface, free of any imperfections nearly always gives you a great finish. But there are a few techniques to help you paint faster and get a perfect finish for your topcoat.


Step 1. Protect the room.

Decorating can be a little messy so let’s take some precautions before we start. It’s unlikely you have any furniture in a room which has been freshly plastered, but just in case, remove any furniture and cover with a dust sheet. Lay a Seriously Good Cotton Rich Dust Sheet on the floor to protect from spilled paint. The cotton rich dust sheet is double lined with polythene so paint will not penetrate through to your floor.

Finish by taping the sheet down with some Seriously Good UV Masking Tape. This will stop the dust sheet moving and keeps everything tidy. The tape will also prevent the watered-down mist coat from running on to the floor, light switches and plug sockets.

This mist coat we will be painting on later in this guide is a very watered-down paint mix and it can go everywhere if you’re not careful. Wear some old clothes and if you are particularly accident prone, wearing a Seriously Good Protective Suit and some Seriously Good Goggles will be a good idea.

Fresh plaster is like a sponge. If you apply normal emulsion paints, they will be quickly absorbed into the wall. This causes you to use more paint than you need, which can be expensive if you have a whole room, or house to do. Another problem is the finish can be worse, then when you finish with the topcoat all you see is the rubbish paint underneath.


Step 2. Make a mist coat.

An easy way to solve this problem is the mist coat. Very simply this is a watered down first layer of paint. The added water means the plaster will absorb the paint very well and because such a thin layer has been painted first the finishing topcoat will be perfect (if you’re using a Harris Premier Roller).

To mix the mist coat use an Essentials Paint Kettle or Ultimate Large Handy Hold as your container. There is a lot of conflicting advice on what ratio of water to paint is best and we suspect this will depend on the paint and the wall. Anything from 2 parts water to 8 parts emulsion paint, down to a 50/50 split will work in our experience.


Step 3. Painting the mist coat.

Now with your watered mixture begin to paint the room, for a detailed guide you can watch our guide, How to paint a room. Use a Premier No-Loss Brush to cut in around the edges of the room and around detail areas like light switches. Work in 1m sections with the brush and then switch to a Taskmaster 4-Inch Walls & Ceilings Roller to blend the brushed section into the rolled section.

When all the detail areas have been painted and blended, switch to the Taskmaster 9-Inch Roller. To help you paint faster use an Ultimate Extension Pole to reach down to the 9-inch tray for loading and up to the top of the wall. Painting in a W motion will also help you cover the wall fast. When the wall is finished leave the paint to dry and then paint your topcoat over normally following our How to paint a room guide.

Walls & Ceilings
Walls & Ceilings

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