By Lauren Haughey As the weather chops and changes between April showers and sunshine, you may catch yourself slipping over on the patio. But one expert says a 65p hack may save you the bother – and it’s probably already stashed in your kitchen cupboard. Tom Allen, owner of TGA Concrete Pumping, claims his quick trick will clear up the algae and fungi that’s making things slimy – saving you from spending hundreds on a professional cleaner. “Not everyone has sand lying around their property, but if you do, then it is one of the most effective ways to reduce the slippiness of your patio and deck…