If you want to change the look and texture of a wall but don't want to paint it, you can render it instead. Wall rendering is the process of adhering a mixture of wet cement and sand to a wall with a trowel. Rendering gives the wall a solid cement look and can be used to cover up the existing wall material.
How much does it cost to Harl a wall?
You should allow £31.50 – £63/m2 (of facing wall) for a rendered wall (which includes painting). So a typical three-bedroom semi-detached home with around 90m2 of walling might cost in the region of £2,835 – £5,670. The job might typically take up to two weeks, and you should allow £500 – £800 for scaffolding costs.
Can you render a painted wall?
More importantly, rendering over paint is not in-keeping with good building practice – delamination, crazing and cracking are highly likely outcomes. You will need to first remove the paint before prepping the surface and finally applying the new render.
