No building project can be done without the services of a qualified structural engineer. So what does this long titled person do?
Building a loft conversion involves some serious alteration to the structural integrity of your home, so a qualified structural engineer will be required to make the new loft conversion build is structurally sound.
There are a lots of changes to the roof and floor structure from converting the loft space into habitable space. The engineer will work out the various gages of timbers, steels and fixings required to undertake such a major loft conversion.
A structural calculation is done and a copy will be sent to the builder who will follow the build requirements and the building regulation officer will oversee the works and check all the calculations.
Basically your new extended home will be safe and a strong as your existing home thus adding value to your most valuable asset.