It's a victorian property, but we had the loft converted and I thought it'd be more airtight than before. Since it was done though (and it has the proper insulation and so on), whenever the wind gets up, it makes such a sound! And, we're currently having a kitchen extension (again with proper roof insulation) and I've just noticed it doing the same! Is is something to do with us having veluxes put in both roofs? Anyone else have this noise?