Hi, Last year I had my loft insulation upgraded from 25mm (yep 1") to 250mm. I am now beginning to notice mould growing on suitcases and other items stored up there. The ventilation within the loft is poor, one air brick at either end of the loft. The house was built in the '70's and is a bungalow with shallow pitched roof. I was thinking of installing vents in the soffits. What sort of spacing is advised? Any other things I should consider? Do I need to get the "mould" treated first? It's not that heavy at present, mainly evident on cloth and paper based things. Am I right in thinking that lack of ventilation is the issue? And, finally, any advice of the types/stockists of vents would be greatly appreciated,
thanks in anticipation,
David