Can anyone advise? Guessing the double glazing in my house was done prior to regs requiring them. we get condensation on bedroom windows and i don't like leaving windows open at night or my g/f closes them...
anyone done it or have any info. have found vents on ebay, just don't know whats required!
Andy
anyone done it or have any info. have found vents on ebay, just don't know whats required!
Andy