• Skip to primary navigation
  • Skip to main content
  • Skip to primary sidebar
  • Skip to footer
DIY Doctor

Main navigation

      • Project Type A - E
      • All Projects
      • Brick, Block, Masonry and Concrete
      • Damp, Condensation, Rot and Woodworm
      • Doors, Windows and Conservatories
      • Electrical
      • Project Type F - G
      • Fencing, Decking, Paving and Patios
      • Floors, Walls, Ceilings and Lofts
      • Garages, Sheds and Outbuildings
      • Gardening and Landscaping
      • General Building, Self Build and Renovation
      • Project Type G - J
      • General Repairs and Cleaning
      • Green Living and Eco DIY
      • Ground, Foundations and Drainage
      • Heating, Central Heating and Boilers
      • Joinery and Carpentry
      • Project Type M - P
      • Materials, Fixings and Fixing
      • Painting, Decorating and Finishing
      • Planning Regs, Project Management and Safety
      • Plastering, Plasterboard and Rendering
      • Plumbing
      • Project Type R - T
      • Roofing and Gutters
      • Tiling and Tiles
      • Tools, Appliances and Access
      • Useful Tips
      • DIY Tips
      • Find a Tradesman
      • Contract Download
      • Working With Tradesmen - Ultimate Guide
      • Home Improver Protection
      • Price Doctor
      • About DIY Doctor
      • What we do
      • Trade Shows and Exhibitions
      • Master Classes
      • Book Store
      • Contact Us
      • Feedback
      • DIY Competitions

Home > DIY How To Projects and Tutorial Guides > Repairing Lath and Plaster Walls

Repairing Lath and Plaster Walls

Learn all about repairing lath and plaster walls and ceilings. There are a number of ways to repair damaged lath and plaster walls. This project will show you how to fix lath and plaster wall in various ways so that you get a great finish.

TwitterFacebookPin ItBuffer

Don't want to do this job yourself? Let us help you find a tradesman local to you

Project Page Menu
  • How to Tutorial
  • Video
  • Find Tradesmen
  • Help

Although the plaster is missing from the photograph below you can see how difficult repairing lath and plaster walls can be.

Cut Back Laths And Plaster To Nearest Studs

There are two ways of making this repair and in either case you will have to cut back laths and plaster to the nearest studs either side of the hole to make the repair as can be seen in the second image below.

Lathe and plaster wall showing plaster removed and laths behind

Lathe and plaster wall showing plaster removed and laths behind

Fix Plasterboard Over The Hole

Once you have cut back the laths and plaster, you can then place a section of plasterboard in the hole and fix it with galvanised plasterboard nails. You may also like to take this opportunity to use the hole that you have created to add some fixings for shelves, coat hooks, TV bracket etc…. as you now have the ideal access to create a firm and solid mounting for any number of things. For further information on the types of fixings that can be used see our fixings project.

Lath and plaster wall showing replacement plasterboard inserted

Lath and plaster wall showing replacement plasterboard inserted

Fill Gaps Around Edge And Plaster Over

The gaps around the edges (shown in red) can be filled with polyfiller, one coat plaster or flexible filler depending on their size (polyfiller and one coat plaster for larger gaps, flexible filler for smaller gaps). Once they are filled the surface can be plastered with skim plaster.

You will need to coat the new plasterboard and the edges of the existing plaster with PVA adhesive. Skim plaster goes hard very quickly and even more quickly when its applied to a very porous surface such as the old plaster. Coating with PVA will remove this porosity and make plastering a little more easy. For more information on how to plaster see our plastering project pages.

Using EML Instead Of Plasterboard To Repair Lath And Plaster

Instead of using plasterboard as outlined above you can also use a galvanised mesh called Expanded Metal Lathing, or EML for short and simply nail this between the studs, keeping it a tight as possible and plastering over the top.

This is the method preferred, and used by most conservation and heritage groups as it keeps the integrity of the wall and allows for the same, slightly uneven finish, associated with lathe and plaster walls. The EML in it’s various purchased forms can be seen below.

EML Roll

EML Roll

EML Mesh

EML Mesh

Fixing EML Over Repair Holes In Plaster And Lath

EML needs to be cut using tin snips and can be cut to the shape of the hole and can be easily fixed with galvanised staples. The roll of EML is 60mm wide and ideal for small repairs as it can be applied in rows. More than 2 rows will almost always need reinforcing with extra noggins inserted horizontally between the existing studs to support from the back.

The mesh can be used for larger repairs or even new walls. Using ordinary staples and/or nails can lead to rust developing which will show through to the surface very quickly and probably spoil any decoration you have applied, so make sure you use galvanised.

EML Mesh fixed to wall in hole in lath and plaster wall

EML Mesh fixed to wall in hole in lath and plaster wall

As mentioned above, if there is too much slack in the EML repair then it may be easier to insert a new timber noggin to give the repair greater strength. New noggins can be inserted easily by cutting a length of timber to fit between the horizontal studs and screwing at an angle into the noggins and down into the studs.

Finally, with the hole covered with the mesh you can now apply your plaster. This can be done by applying a suitable base coat plaster and then a skim layer on the top.

For base coat plaster it will be best to talk to your local builders merchants as there are quite a few plaster varieties about these days. Make sure you tell them that the plaster is to be applied to EML. For smaller repairs there is a One Coat Plaster available, which is called Universal One Coat Plaster but in DIY stores generally comes in smaller bags than the 25kg usually available from any builders merchants. This can also sometimes be known as Patching Plaster.

Which ever method you choose for repairing lath and plaster, be it using plasterboard or EML mesh make sure that you take you time and pay attention to ensuring that your chosen material is fixed correctly using galavnised mails, screws or staples. This way you can then be confident that your repair will be a long lasting one.

All project content written and produced by Mike Edwards, founder of DIY Doctor and industry expert in building technology.

TwitterFacebookPin ItBuffer

Video

Back to the Top

Apologies, but we don't seem to have a video for this project yet, but we will do our best to get one up soon

Find a Reliable Local Tradesman

Back to the Top
Don't fancy doing this project yourself? We work with the industries best to ensure that we recommend only reliable and trustworthy tradesmen.
Let DIY Doctor help you find a tradesman

Find a tradesman now!


More Help

Back to the Top
Related Projects That May Help You:
  • Installing Dry Lining or Plasterboard Back Boxes
  • How to Repair a Hole in a Ceiling
  • Fixing to Lath and Plaster Correctly
  • How to Build a Stud Wall Using Timber and Plasterboard
  • How to Fix to Plasterboard and Use Plasterboard Fixings
Give us Some Feedback!

We love feedback on our DIY tutorials it helps us to make them the best they possibly can be so if you have any comments you would like to share with us, click the button below and let us know.

Primary Sidebar

Master Basic DIY - By DIY Doctor

Our Book - Master Basic DIY

Grab your copy now for all the DIY help you need right at your finger tips!

Buy it Here!

Signup for our Newsletter

Keep up to date with our DIY projects, tips and latest deals

Sign Me Up!

Our Sponsors

Find out about advertising on DIY Doctor

Advertisments

Other Similar Projects
  • How To Repair A Lathe And Plaster Ceiling
  • How To Fix Into Lathe And Plaster
  • How To Choose Plasterboard Fixings
  • How To Build A Partition Or Stud Wall Using Plasterboard
  • How To Cut Sockets Into Plasterboard

Footer

DIY Doctor company logo

Here at DIY Doctor, we offer completely free DIY and construction help and advice to any and all, from professional tradesmen, exactly as they would do it.

We have hundreds of DIY project tutorials covering all aspects of building and DIY that provide step by step instructions on how to complete your given task.

If you need a little help then we also have an active question and answer forum and a find a trademan service and much more.

Site Menu

  • DIY Doctor Ltd,
    The Workshop,
    Newbury Works, Somerset,
    BA3 5RX

  • 0845 6342 179

  • Contact Us

  • Company Number: 05863375
  • VAT Number: 811134774

Other Stuff

  • About DIY Doctor
  • Contact DIY Doctor
  • Media and Press
  • DIY Projects
  • UK DIY Forum
  • DIY Doctor Suppliers
  • DIY Webinars

DIY Doctor Social Channels

  • Advertise
  • Competitions
  • Terms and Conditions
  • Privacy Policy
  • Cookie Information
  • NHIC
  • Sitemap

DIY Doctor are members of:

© DIY Doctor Ltd 2025 All Rights Reserved