Put your tent up & get a measuring tape pen and paper.
Sketch out the shape of your tents floor.
Then go into tent with measuring tape and measure each length & write it down.
Voila! You now know what size of carpet you need for your tent.
Ground sheet should be same size as the whole area the tent occupies on the ground & minus about 5cm from each edge so the the groundsheet doesn't stick out. If it does stick out and rain comes then water will get under our tent
------------- Facebook:- Tent Camping group
Living the Dutch Dream - Karsten 300 pod + extns in Sea Green and Pure Cotton
This thread HERE has the 2008 tent dimensions on it - not sure what model your tent is but it might help - Also remember your carpet doesnt go under your sleeping pods!
Amazing family weekend with old steam engines, classic car displays, market stalls, and full catering and bar. And camping on site - Save £25 by booking in advance.