Planning to install GGU M06 0059 Velux's (new build extension), roof tiles are Marley / Redland Double Roman concrete, slope is approx 32deg. Roofing supplier recommends EDW flashing kit (up to 120mm), but Velux say both EDW or EDZ will be OK. I would have thought the shallower one would be better (EDZ 15 - 45mm), but having never fitted them before would appreciate some advice on the pros / cons of either option.
Many thanks.
Many thanks.
