Ah.
All the ones I have found online which are 150mm seem to be around 70mm top and 120mm bottom. I had assumed that this was some kind of industry standard now but from what you are saying this isn't the case? In which case I'm guessing that I would struggle to find a simple answer for this...
Hi,
I'm wanting to explore the possibility of replacing a floating chipboard floor with a screed for a house built in 1999.
The subfloor is block and beam but the beams appear to be a lot less beefy than their modern equivalent. From the measurements I've been able to do they appear to be...