Ask a Trade
Got a question that only a tradesperson can answer? We have thousands of trades ready to answer any question you may have.
Ask your QuestionHi. I’m thinking of having a polished concrete floor installed. I’m wondering whether expansion joints will be needed?
Asked by kashif on 19th Jan 2022"I would suggest that expansion joints are used to try and eliminate any cracking in the finished concrete surface as possible. Once the slab has been laid and been able to set then the expansion joints would need to be cut into a minimum of 30% of the slab thickness but ideally 50% then the joint at the top will need to be sealed with a rubberised sealant to allow for and movement in the slab."
Answered on 17th Feb 2022 - Member since Feb 2022 - report