There are a number of reasons people choose to remove the render from their homes. Whether it’s cracked sand and cement render that is causing problems with damp, or old dilapidated pebbledash that just looks tired and outdated. There are a few things that you can do to either remove the render or cover it over, so keep reading for our best advice!
Removing Existing Render
Old render will need removing with traditional tools, such as a hammer and chisel. There is some specialist equipment on the market today, but if you don’t have access to these then standard tools will do the job.
Using this method to remove the render means that you have to be really careful not to damage the underlying substrate, as this could create more work for you later down the line when you need to repair it. Any damage to the underlying substrate also means that you will most likely need to re-render the wall, and you may even need to use a levelling coat to get the substrate nice and flat again.
Hiding Render with External Wall Insulation
If removing the render puts the building at too much risk, then your next option is to install external wall insulation boards on top. As long as the existing render is sound and stable (i.e. not likely to fall off the wall) then this method is a great means to an end.
You can make this as cheap as possible by merely using a 20mm thick EPS insulation board, which won’t do much for the energy efficiency of the building but will certainly help provide a flat surface for re-rendering. Alternatively, if you want to go all out then you could install 90mm and reap the rewards.
For this method, you will need to buy fixings that go through the insulation board and far enough back that they penetrate the actual brickwork/blockwork underneath. Once the boards are in place, a thin coat coloured render should be applied on top as a means of protection against the weather.
Using the One Coat Dash Cover to Cover over Pebbledash
One Coat Dash Cover (OCDC) is a quick and easy solution to covering over pebbledash instead of removing the render itself. It’s a lightweight, lime-based basecoat which can be applied up to 50mm thick in two passes. This means that if the pebbledash is waterlogged, it will be able to dry out naturally as OCDC is very breathable and won’t trap the water.
You can finish OCDC in any way that you like, whether you choose to use a thin coat render, lime render or a traditional masonry paint, it’s important to use breathable materials to allow any trapped moisture to escape.