How to re-plaster a wall

Plastering a wall is the sort of job that most people leave to the professionals, but have you ever thought of re-plastering a wall yourself?

I’ve had a go at plastering small areas of wall myself and it’s definitely doable with some patience, practice and plenty of research.    Well you may not want to plaster your entire home, a small area could be just fine to do yourself.

It is totally possible to DIY this job if you’re up for it. Here are a few tips that might just help if that is what you want to do.

How to replaster a wall DIYImage

Proper Preparation

Plastering is like any other job in that you will get the best results if you prepare properly.

You need to start by protecting your flooring. Using something such as Florprotec Carpet Cover, which you can click here to find out more about, will keep the dust that plastering creates out of your carpets and protect it from any loose debris. Brush the wall with a broom to remove any dust and if there are any cracks or holes cover them with screen tape. If it is a new wall you are plastering, cover all the plasterboard joints with screen tape.

Bond With PVA

Dilute PVA glue to one part PVA and four parts water and then apply it to the entire wall. This will ensure that the plaster you are applying will dry out evenly.

Prepare Your Plaster

The next step is to mix your plaster. You should wear a dust mask before opening the bags and then mix the plaster into cold water, never the other way round. You need to stir it briskly to get rid of any lumps and it should end up with the consistency of thick custard.

Apply First Coat

Put some plaster on a hawk board, which you can buy here, and use that to push the plaster onto the wall. Spread the plaster upwards as evenly as you can. Work in small sections, starting at the bottom and finish each section before you move onto the next. Use small amounts of plaster and lots of pressure as this will give the smoothest look and help to avoid excess plaster falling from the wall.


Leave the plaster to dry for about 20 minutes and then get rid of any lumps and bumps by smoothing it over with a trowel. The corners and edges might need some attention at this time as well, and a wet paintbrush can be useful to help you get these right.


You need to apply a second coat of plaster and the easiest way to make sure this adheres to the first is to scrape the first coat. There is a tool specially designed for this job, which is known as a devilling float, or you can grab a fork from the kitchen and do it with that.

Apply The Second Coat

The second and final coat of plaster should be mixed a bit thinner and should not really be any more than 2mm thick. Leave it to dry slightly and then add some water to the surface to make it easier to make it smooth. Finish off by running a clean float over the entire wall to flatten out any lumps and bumps. Leave it to dry completely and then use sandpaper to get rid of any excess plaster around the edges.

The wall is now ready to be wallpapered or painted. If you are going to paint it apply an undercoat first to seal the plaster, or your paint will just sink into it.  If you are papering, apply a couple of coats of wallpaper adhesive and leave it to dry before hanging the paper. This will act as a bond between the two.

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How to Re-Plaster a Wall

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