Learn how to repair cracks in plaster in three easy steps

Putty knife filling cracks in wall
(Image credit: Getty Images)

It's not difficult to repair cracks in plaster, but you really need to make sure that you are doing it the right way. Whether it's a hairline crack or a larger crack, the principle of repair is very much the same. You just need to know the right technique to get a good, long-lasting finish.

You can think about plastering walls, but this is an expensive alternative and if your cracks are only occasional and minimal a good filler applied properly will give you a finish that looks good and be strong enough to cope with nails and screws.

Here we show you how to quickly fix and repair all types of cracks in your walls and ceilings and tell you what filler you need to use. 

What is the best filler to repair cracks in plaster? 

Steve Jenkins

Steve Jenkins is a freelance content creator with over two decades of experience working in digital and print and was previously the DIY content editor for Homebuilding & Renovating. 

He is a keen DIYer with over 20 years of experience in transforming and renovating the many homes he has lived in. He specialises in painting and decorating, but has a wide range of skills gleaned from working in the building trade for around 10 years and spending time at night school learning how to plaster and plumb.

He has fitted kitchens, tiled bathrooms and kitchens, laid many floors, built partition walls, plastered walls, plumbed in bathrooms, worked on loft conversions and much more. And when he's not sure how to tackle a DIY project he has a wide network of friends – including plumbers, gas engineers, tilers, carpenters, painters and decorators, electricians and builders – in the trade to call upon.