Evening all, new to the forum.
I want to increase the insulation in my attic but the current joists are only 100mm, I also want to re board it as its used for storage. So my thoughts are to run a length of 4x2 along the current joists (hanger to hanger) and then add another 4 x 2 the same and this would increase the height to 300mm, I could then run 250mm of insulation, under building regs but its not being used as a living space. I also thought about running the second 4x2 at 90 degrees to allow me to cover the joists (thermal bridging). I have looked into something like a loft leg but im not sure about the weight they can take and we store a 50kg tent up there.
Any help would be appreciated.
Thanks
Mark