Originally Posted by
Moondoggy
Are you saying meters ? In feet I prefer a tarp no smaller than 10ft by 10ft it allows me to close in the ends as doors and plenty of headroom when I stake the tarp directly to the ground so there is no drafts! Get your self an Underquilt if you can afford it ! If not you could use a blue foam pad and try some Reflectives they work miracles when you have cold spots ! You can buy the Reflectives cheap from Lowes or Home Depot ! It's a bubble wrap double sided with shiny stuff ! It's used to cover and insulate ductwork around $15 a roll .