Lime Render vs Silicone Render

Question

I live in a 3 bed semi with solid walls. We had an independent damp survey which revealed the walls are extremely damp. His recommendation is to hack off existing render and replace with lime render. A rendering company has recommended a silicone render on top of the existing render or external insulation with silicone render. I don't want to get this wrong so I would welcome any opinions/comments. Many thanks.

Kevin · Accepted Answer

Lime render allows. Your walls to let "vapour " through and not trapping.it thus alleviating most.or any damp issues, I'm assuming the current render is sand and cement which is the wrong type for solid brick walls, as for rendering over the top  of original 🙄,  so my opinion is go with the Lime render, but make sure they have quite a lot of experience with Lime rendering as it's kind of a specialist field

Simion · Answer

I would recommend to remove the existing render and do instead silicone Render on top without any lime silicone render will insulate if there is not Insulation in the house is hot outside cold that's why you have mould

Michael · Answer

Solid stone walls need to breath lime is the way. Silicone would seal the wall causing more damp and dry rot. Hope this helps

Daren · Answer

Hi I would recommend taking off external render and using 3to 1 mix of sand and lime to allow walls 2 breath being they are solid walls

Allen · Answer

Silicone render over insulation board  very energy efficient

Lime Render vs Silicone Render

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