HI THANKS FOR REPLY. GONNA USE IT FOR OCCASIONAL USE AS A SPARE ROOM FOR AN OFFICE. JUST A COMPUTER TABLE, CHAIR AND A FEW BOXES OF STORAGE. WILL BE IN THERE FOR A COUPLE OF HOURS EACH DAY SO IT NEEDS TO BE FREE FROM DUST AND WIND, A PROBLEM THAT I HAVE GOT AT THE MOMENT. BEFORE IT WAS EMPTIED...