Render Repair Guide

By Kim
Last updated 22nd September 2021 - Reading time: 11 mins

Are you looking for information on render repairs? In this article, we will go over everything you need to know about repairing render, including the processes involved, the different types of render repairs, the cost of repairing render, and things you should look out for when finding the right contractor to carry out the work for you.

Render cracks

What is a Render Repair?

A render repair is a one-time job that must be completed in order to protect your home from the elements of nature. If you notice any damage to rendering on your house, it should be rectified as soon as possible.

Render repair

Carrying out render repair work when needed and maintaining the brickwork of your home is necessary to ensure your external walls continue to defend the home from the elements. There are several different types of render repairs which we will go over in the next section.

Types of Render Repairs

When it comes to render repairs, there are several different methods. Each rendering problem will need to be treated in a different way. Below, we will go over some of the most common rendering issues and how to fix them:

Fixing Small Cracks

Whenever you notice a crack in your rendering, you should aim to fix it as quickly as possible, no matter how small it may be.

Even the smallest of cracks can allow water to penetrate the render, which can then seep into the underlying structure and cause lasting damage. Small cracks can be filled in with an acrylic-based sealant or a render repair mix.

Fixing Groups of Cracks or Large Cracks

If you notice groups of cracks or large cracks on your rendering, simply filling them with sealant may make the rendering appear uneven, and the sealant could be very visible.

In these cases, you should instead fix the entire affected area and then go over it with cement-based paint or acrylic exterior paint. This will allow you to match the repair up with the colour of the rest of the render.

Fixing render

The best way to go about this is to remove the damaged render and then replace it with new render. Ensure that you give it enough time to completely dry and cure before applying the paint.

Repairing Discoloured Render

Discolouration is the simplest type of render repair. To fix discoloured areas of render, simply clean the affected areas and then go over them with the same coloured paint as the original render so that the colours match up. Be sure to leave your render enough time to dry before applying any new paint.

What Are the Pros and Cons of Repairing Render?

It's very important to repair your render as soon as you notice any problems with it. Below is a list of the advantages and disadvantages that come with repairing render:


Protect Your Home

If you notice small cracks in your rendering, these can quickly become big problems. Water can seep through these cracks and into the underlying structure, causing water damage to your walls. By fixing any rendering issues straight away, you can greatly reduce the risk of damage to the external structure of your home.

Improve Appearance

Cracks, missing parts, and discolouration on your rendering can be very unsightly in appearance and can reduce the curb appeal of your home. Fixing your rendering issues can make your home look neat, fresh, and very aesthetically pleasing.

Applying render

Avoid Further Damage

If you leave your render problems without fixing them, they can lead to bigger issues down the line, which could cost you a lot of money. If you leave small cracks in your rendering, they can quickly turn into much bigger cracks that are harder to fix.


May Not Match

The only disadvantage to repairing rendering is that the repair patch may not completely match the original render. However, the advantages that come with repairing render massively outweigh this small disadvantage.

With the right paint and a bit of dedication, you can easily get your render repair patch looking the same as the original.


As with any repair job, there are costs involved with repairing render. No matter what your budget is, you should aim to fix your render problems as soon as possible to avoid having to pay more.

Bigger render repair jobs aren't cheap, so it's much better to spend a bit on repairing your render early to avoid having to spend much more in the future.

How Much Does It Cost to Repair Render?

You may be wondering how much a render repair costs. Render repair prices can vary depending on the type of repair needed and the level of the damage.

The most common render repair job is a patch job where the cracks or missing pieces are patched up with the same type of render as the original. The average cost you can expect to pay a tradesperson for this work is around £15-£30 per m2.

Man fixing render

If you are hiring a professional to repair discoloured parts of your render, this will cost around £20 per m2. Repair costs for rendering are much lower than a complete re-rendering, which is why it's so important to get any issues fixed quickly before they get worse.

For more information about the cost of repairing render and the cost to remove and replace old render, take a look at our rendering cost article here.

How to Repair Render

Repairing render is quite an easy job as long as you know a little bit about rendering already. Many homeowners will choose to repair their render as a DIY project, whereas others prefer to leave it to the professionals to ensure the job's done right.

Below is a simple guide on how to do a patch job to repair cracks in render:

  1. You will need to begin by ensuring you are wearing the appropriate safety equipment. For this type of work, you will need safety goggles and work gloves. If you are working on a ladder, ensure that it is securely placed on level ground. It's helpful if you can have someone on hand to hold the ladder for you while you work.
  2. The first step involves removing all of the old render from the affected area. Use a chisel and short-handled sledgehammer to chip away the old render.
  3. If the steel mesh reinforcement is damaged, you will need to repair this next. Cut a new piece of mesh and attach it to the wall using galvanised nails.
  4. You now need to get your ready mixed render repair solution and apply it to the area using a trowel. Be sure to push the render into the mesh. Your patch work should be thicker than the original render.
  5. Use the surrounding wall as a guide and smooth the patch work's surface using a straight edge. This will allow you to create a level surface in line with the rest of the render.
  6. Finally, try to duplicate the texture of the existing render using a finishing tool while the patch is still wet.
  7. Once the render is completely dry, you can then paint over it to match the colour of the existing render.

For thin hairline cracks, you may be able to simply use some render crack repair resin or render crack repair mortar to fill in the gap.

How Long Does It Take to Repair Render?

The time it takes to repair render will depend on the extent of the damage. Most repairs can be completed within a day. However, some more extreme levels of damage could take longer to repair.

Tradesperson smoothing render

You can expect to repair small hairline cracks in around an hour or so. Whereas large holes could take an entire day or longer. It really depends on the extent of the damage and the method of repair that you are taking.

Building Regulations or Planning Permission Approval for Render Repairs

You won't normally need to worry about planning permission or building regulations for an external render repair. The only exception is if your home is a listed building or in a conservation area. In these cases, you may need to apply for planning permission to do any work on the exterior of the home.

To find out more about whether or not your home is one of those listed above, you will need to contact your local council. They will be able to shed some light on your situation and advise whether or not you need to apply for planning permission to repair render.

Questions to Ask When Hiring a Render Repair Specialist

You may need to consider several things when finding the right contractor to repair the rendering on your home for you. Below is a list of common questions that you should ask when looking for the right contractor for the job:

  • Does the contractor have any qualifications that relate directly to repairing render?
  • What equipment will the contractor be using to complete the job? Will they be using the correct type of equipment? Do you need to provide any equipment?
  • Does the contractor possess any form of insurance for the work? You should look for contractors who have insurance that covers property damage, personal injuries, and a work guarantee.
  • How much experience does the contractor have in repairing render? Can they provide any testimonials or evidence of previous work? Can they provide photos of previous work?
  • Does the contractor offer any guarantees with their work? How long does the guarantee last? What issues are covered under the guarantee? Will the contractor fix any issues that arise?
  • How long will the work take to complete?
  • How many contractors will be working on the job?
  • Is there anything you need to do to prepare for the repair job?


Can you repair flaking paint on render?

It is possible to repair flaking paint on render. The best way to fix this problem is to use sandpaper to go over the flaking paint and remove any of the flaky parts.

Then, use a putty knife and install a thin layer of patching material to the area. Use sandpaper and a tool to create a similar texture to the rest of the render and then allow it to dry.

Once the area is completely dry, you can then go over it with paint to match the rest of the render.

Can you repair pebble dash render?

Although it's not impossible, it is extremely difficult to repair a pebble dash render. This type of render repair will need to be completed by a professional with plenty of experience and all the right equipment.

It's impossible to simply paint over pebble dash render to repair it as this isn't a sufficient repair. You also can render over pebble dash because it's too difficult to get the exact same texture and tone as the rest of the pebble dash render.

Many professionals will use a waterproof wall coating to repair damaged pebble dashing. It's not something that can be completed as a DIY job as it requires expert knowledge to get the right type of repair that matches up with the rest of the home.

Are rendering and plastering the same thing?

In a way, they are the same kind of thing. However, rendering is an external process, and plastering is an internal process. The steps that are taken in both of these jobs are very similar, but the materials that are used are much different.

How do I remove a pebble dash render?

A pebble dash render is very difficult to remove. It requires a lot of work as you will either have to chip the render away bit by bit or use a sandblaster to remove it. Removing pebble dash render is a very messy job and very difficult, so it's recommended that you choose professionals to complete this type of work for you.

How long does render last?

Render is usually very long-lasting and hard-wearing. With the proper level of maintenance, your render could last for decades without needing any repairs. This will depend on the style of render that is used and the overall quality of the job. Between 20-40 years is the average time that you can expect render to last before it needs to be updated.


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