hi, still got abit of a prob in loft wit condensation. the loft is insulated with 50mm kingspan with a a 50mm air gap between that and the roof felt/tile for the ventilation. the insulation covers th roof section but comes approx half way done the roof were i created side walls again with kingspan. so the other half of the roof line is bare, this is where the condensation forms (its not to bad) is this normal, cause it is frosty outside again this just seams on the north facing roof, no condensation on the south ? the eaves are deff clear but in the facias there are only 2 vents on each side, should i put more vents in etc ?