Can anybody tell me roughly the size of the gap between the inner and outer skin on the front of the hull as I am going to fit a new escape hatch and need to make a filler beforehand to go between the skins.
The gap probably isn't parallel, the outer skin on my old normans varied massively in thickness so I doubt you'd be able to make a spacer before cutting the hole.
thanks all for the info. it turned out that a standard tanalised tile batten was an exact fit so new hatch fitted and hopefully no water leaks so its out for a cruise or two now and save the rest of the work for later