As almost all of our DIY conservatories are bespoke and some by no means 'bog standard', it is very important that we get the design and finished sizes right. We never want to be in the awkward situation where we have a call from a customer saying that the conservatory does not fit.
So the way we deal with this is to allow the customer and / or their builder plenty of time to check out all of the detailed CAD images and plansa that we email them. This way, the customer gets it right and we know that the conservatory will fit the area it was designed for when it arrives. Why rush?