PatrickBateman

Thank you - That's very helpful for shaping my thinking. I don't suppose you looked at the water proofing membrane I linked - I have never used one of these before so I would appreciate any input you might have. I've will rework the drawing and post them here later on - I'm new to this forum but so far finding it a very helpful place to be! Cheers.

Hi Thanks for your reply - some really helpful feedback. The space is a garden room and as such falls outside regs - that said I want to create a high quality space. The idea for building off the retaining wall is to gain a bit of extra head height under permitted as the retained ground level would form the measuring point for the 2500 permitted height. I agree a membrane would be a better solution - its a pretty small wall so wouldn't represent a huge outlay and would certainly increase the longevity of the build - would a product like this be suitable? https://www.ukbuildsupplies.com/2000sa-self-adhesive-waterproof-hyload-tanking-membrane-15m-x-1m?gad_source=1&gad_campaignid=22574627952&gbraid=0AAAAADtJMBNpGY3KJJ0Nb6SCW4tisYEFM&gclid=Cj0KCQjw1JjDBhDjARIsABlM2SuY6aoDHlhRaQrsvVqYePl0CXFTw33EL1O3KIJ7424SXRMob0k0yK4aAvEQEALw_wcB Re the drip tray "holding water" - could you please help me understand this feedback? I understand the drip tray would move water away from the structure and as such I'm a little confused as to your input here but keen to learn more! The drawing as shown allows 100 mm above the ground for the sole plate so I can find an extra 50mm there to be safe! Adding a vapor barrier seems sensible! Good advice. Re the screed - what's the min depth for a traditional S&C mix? Thank you in advance!!

Timber Frame Retaining Wall.pdf

Hi, I'm new here! Firstly I hope i've posted this in the correct place, please do let me know if i've made an error and flag my in the direction of a better home for this post! I am a pretty experienced builder, having worked on my own projects, mostly renovation of existing structures, hence me being a bit out of my comfort zone here. Is the below detail / build correct? What can I improve? Any help / comments would be very appreciated. CheersTimber Frame Retaining Wall.pdf