By Alan Johnson A homeowner has revealed a DIY loft insulation hack that could potentially save fellow Brits thousands of pounds. The man posted before-and-after shots of his efforts to Reddit’s DIYUK subreddit where he revealed he’d been quoted between £1,800 and £2,000 to have the work done by tradesmen before deciding to go it alone. He captioned his post: “Boarded the loft and saved £1,750.” He said doing the work himself cost him just £250 in materials, plus a day’s labour – and the end result looks fantastic. While his first attempt did not quite go to plan, the man showed in further ima…