How to replace internal render in old house?

TomArt

Hi, I'm new to the community so thanks in advance for any help I get. I've got to replace some moisture damaged render around an old chimney in a bedroom. The house is Edwardian and I think it's about 100 years old. I've had new damp proof courses installed, and the installer advised me to replace the affected areas. He used a moisture meter to show me where to replace the render.

The render is about 20 mm thick, so I need to match that depth to keep my wife happy. What product should I use to replace this old style thick render? Thanks, Tom

MitchellMc

Welcome to the Bunnings Workshop community @TomArt. It's sensational to have you join us, and many thanks for your question about repairing render.

I’d recommend using Dunlop 20kg Multipurpose Acrylic Render. It’s versatile and can be built up in layers, allowing you to achieve the 20mm thickness you need by applying multiple coats. This product is well-suited for this type of repair, as it adheres well to existing surfaces and is durable in areas affected by moisture.

Before applying the new render, it’s essential to ensure that the surrounding render is sound and well-adhered to the wall. If the existing render is loose or compromised, it should be removed to avoid any issues with delamination at a later date. Once the area is prepped, follow the manufacturer’s instructions for applying the render, applying it in a layer up to 10mm and allowing each layer to dry before adding the next.

For more detailed guidance, check out this step-by-step guide: How to render.

Please let me know if you have any questions.

Mitchell