Skip to main content

Ready to hire?

Post your job in minutes, browse real reviews and choose who to speak to.Post a job

Need some tips or advice?

Ask a question
Plastering & Rendering

Multi finish or lime based plaster?

Anonymous user 01/03/2024 - 2.55 PM

Hi, I am planning to have some walls replastered and waterproofed. The builder plans to take old plaster right back to the brickwork, use two coats of Sika waterproof render and then apply a multi finish topcoat. I contacted Sika about something else but they did say a lime based plaster top coat was better to avoid 'pooling and delamination' whatever that means! The builder says he's never had any issues using a multi finish plaster before with this product and he is reputable. This is for one internal party wall and a window wall. My independant surveyor said that a gypsum based top coat is all right. Any ideas to put my mind at rest please?

Are you a tradesperson and able to answer this question?

Log in

4 Answers

C and B Property Developments

Rating: 5 out of 5
Wednesbury
Hi mate if this was my job i would PVA walls first to kill dust then i would use cementone plasterers stabilising primer ( green grit ) and using multi finish over this is a dream
Answered17 June 2021
2

Completeplastering, Gatley

Rating: 5 out of 5
Cheadle
After applying a base coat of sand cement and an integral water proof additive, there is no problem in applying a multi or board finish top coat, I have been using this material since 1981 with no come backs
Answered23 June 2021
1

LGCJ BUILDING SERVICES LIMITED

Rating: 4.8 out of 5
Eastbourne
Hi its quite quite simple what you should do is wet walls down with water you do not need PVA. use a waterproofer plasticer added to the water on the can it will tell you how much water proofer to use per bag of cement . Use a washed rendering sand . IE laton buzzard or westerham b sand . Then finish with multi finish thats how it should be done
Answered24 June 2021
1

cb's plastering services

Rating: 4.8 out of 5
Dunstable
The previous guy said to multi over brick work, lol, sand and cement with water proofer then skim with multi
Answered29 June 2021
1