Rendering This Chimney Was a Challenge – Sand & Cement Over Blockwork

I take you through the full process of sand and cement rendering a chimney above a sunroom on a new build. From prepping the blockwork to applying the scratch and top coats, I show how to get a clean, durable finish that ties seamlessly into the roofline and brickwork.
You’ll see the tools I use, the mix ratios, and the techniques that help avoid cracking and ensure long-term adhesion. Whether you're a builder, renderer, or just curious about how chimney work fits into a modern build, this walkthrough covers it all.

In this video, I take you through the full process of sand and cement rendering a chimney above a newly built sunroom. From prepping the blockwork to applying scratch and top coats, I cover every step with tips for clean lines, strong adhesion, and a crack-free finish.
Whether you're a renderer, builder, or just curious about how chimney work ties into a new build, this one’s for you.
Chapters:
0 Intro
Chimney prep & scaffolding
Mixing sand & cement
Scratch coat application
Top coat & finishing
Close-up of final result
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