New joists for loft conversion

Is it likely that a loft needs new joists before being converted? I guess this could vary a lot from house to house?

Asked by Beverley on 26th Aug 2022
Expert Trade Answers
"normal loft joists are not designed to carry loads; therefore existing joists have to be re-enforced by additional joists members, before conversion."
Answered on 4th Sep 2022 - Member since Jun 2022 - report
"Yes to support the new room , dead weight and active weight."
Answered on 26th Aug 2022 - Member since Aug 2022 - report
"Hi Beverly, it is highly likely that you’ll need new joists installed when converting a loft space into a habitable room space! The ease of installation will depend on the ceiling joist configuration you already have in relation to what you are planning to do with the proposed space. The dimensions of the new joists required to form the new floor will depend on the span of whatever they are being loaded upon. I’m pretty certain that the ceiling joists you already have won’t be big enough.
I hope that helps."
Answered on 27th Aug 2022 - Member since May 2022 - report
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