Building Homes or Extensions/Rendering /Wall coating

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Expert: - 9/26/2010


Question
I have a house which has been rendered and painted. I wish yo apply a coating which is like a very fine granite pebbledash. do I have to remove paint and or old render or can I do it straight on top of existing painted render.

Answer
Stewart,

Read exactly what the manufacturers state for the background substrate.
Personally to obtain trouble free longevity of the product I would check the render for soundness, do a light hammer tap all round to check it's not bossed(losing its adherence.
If its bossed remove it. If its sound remove the paint totally.
You will have to scabble the render to obtain a key(scratch) apply a PVA bonding primer just before doing your new render, you can also wire lathe the whole thing and re-render, good but costly.

Any other questions feel free to ask


regards
Bill

Building Homes or Extensions

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Bill-C

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Questions on UK construction from Setting out Projects through to completion. Mainly concreting ,drainage ,bricklaying, masonry,carpentry and decorating,plaster work ,render/roughcasting.From new build construction to historical restoration, renovation. How to set out ,levelling and survey matters.

Experience

Timeserved bricklayer , developing to Construction Site Manager and Educated to Site Engineer. Having been in the Industry for 35 years carrying out all types of general construction . renovation and historical renovation and remedial works.Now mainly on luxury dwellings to the value of £2M. Having been self employed and advising main Contractors and Developers through Construction phases and managing the works from concept to completion.Having a broad spectrum of experience.

Education/Credentials
Scottish Apprenticeship in the crat of bricklaying. Scottish Construction Industry Site Managers Site Civil Engineering Construction and Surveying Set out. Scottish Civil Engineering Analysis of Concrete and Mortar Asbestos encountering. Scaffolding Inspectors Certification Planning, Programming and Management

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