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How To Repair Hairline Cracks In Rendering

How To Repair Hairline Cracks In Rendering

Every street in the UK is a little different to the last. There are multiple reasons behind this, but one of the most noticeable is the type of render that has been used on the buildings.

Render is a coating applied to the exterior of a wall to protect the brickwork underneath, change the appearance of the property, and safeguard agaisnt damage from the elements.

The types of render range from classic concrete rendering to pebbledash (the marmite of the rendering world).

Render has a lot of responsibility for property protection, but the materials aren’t infallible, in fact, there are some common rendering problems that can arise – including the appearance of hairline cracks.

In our guide we’ll walk you through the causes of hairline cracks, how to repair hairline cracks in rendering, and look at how to protect your render in the future…

How To Repair Hairline Cracks In Rendering

Render repair is not a difficult task-but it can take a substantial amount of time if there are multiple cracks in the render. Needless to say, this job is best left to the professionals!

What Causes Hairline Cracks to Appear in Render?

Cracking in external walls can happen for a large number of reasons. It could be the fault of the weather, the rendering mix, the application, or something else entirely.

Here is a selection of the common reasons why you may be noticing an excessive number of hairline cracks and blemishes in your render:

• The render is struggling to cope with property movement

• The render has been damaged physically

• Render is prone to damage from erosion

• Damage could be a result of shrinkage

• The render was not mixed properly

• The correct render application process was not followed

• The render has bulged

• Water has been trapped and has frozen in the render

How Is Render Repaired?

Render repair is not a hard task but it can take a considerable amount of time if there are a lot of cracks in the render. Normally, this is a job left to the professionals.

If the cracks are fairly large then the process involves cutting the cracks open to remove debris that has gathered inside, then the cracks are filled, normally with a sealant. Hairline cracks can normally just be filled with a sealant without worry.

For large areas of damage, the rendering may need to be removed in part, and new rendering applied to the area. 

This will make sure that there aren’t any weak points in the layer protection created by the render.

How To Repair Hairline Cracks In Rendering

A wall coating forms a direct bond with the render, creating a strong layer of protection. The same results can also be achieved if the coating is applied directly onto exposed brickwork

Addressing the Concern of Broken and Cracked Render

Simply sealing the cracks doesn’t solve the underlying problem of why the cracks appeared in the first place. For cases of a poor-quality mixture or sub-par installation, large areas may need to be removed and rendered properly.

For the slightly more common problem of weather damage and water infiltration, there is a completely different solution – a wall coating.

A wall coating forms a bond with the render, which creates a strong layer of protection – the same can be achieved if the coating is applied directly onto exposed brickwork.

The bond changes the properties of the exposed surface of render. You won’t need to worry about water absorption any more and the breathability of your walls will be retained.

By stopping water absorption as much as possible, you prevent issues like water freezing and causing cracks to appear. Instead of seeping into the surface of the wall, the water will bead up and roll down the surface.

This helps to lower the requirements for exterior wall care. Grime and dirt that naturally accumulates on exterior walls won’t pose such a problem, as the rain will wash them away.

How To Repair Hairline Cracks In Rendering

Ready to deal with rendering cracks once and for all? At Home Logic, we offer a comprehensive service for wall repair and the application of coatings, all completed by our expert team!

Two Jobs in One – Repair and Protect

When you have a wall coating installed, the process also covers the essential areas of render crack repair and even render replacement where required. A wall coating shouldn’t be applied on a sub-par surface, so you’ll find that the installers take care of all the issues for you.

A wall coating application can include additional treatment for common issues like algae growth, it’ll involve full crack repair, and even bagging, to improve the structural security of your exterior walls.

Repairing your walls is only the first step, for comprehensive protection, they need to be coated in a product that can keep them safe from weather damage.

Put an End to Your Render Problems Today

Ready to deal with rendering cracks once and for all? At Home Logic, we offer a comprehensive service for wall repair and coating, all completed by our expert team.

If you’re interested in safeguarding your walls for the future, then give our team a call today on 0800 1700 636. Alternatively, simply click the button below and we’ll assist you asap!