Timber is quite expensive....so what I have done here is buy some cheap cladding...cost me £4.00 a pack from B&Q...this job took about 2 packs=£8.00.
I had to saw every piece lengthways to get rid of the tongue and groove effect but if your willing to put in a bit of hard work then you can save a few bob !!!
Also because the timber is quite thin and not very good quality...polyfilla is a must...I mix polyfilla and pva to hide any gaps that way I know it will really stick!!
REMEMBER ITS NOT FINISHED YET !!!!