Hi Thank you for your professional advice that makes perfect sense. this is the general lay-up some of our guys did back in the 80's and 90s for old GRP Kayaks/canoes and sometimes fairground rides, I suspect the UV exposure may have been far less due to them being in storage/under cover more times than they were outdoors or in the water?. It's always good to obtain information from those who have further experience with these processes. Thanks again for the info. Kind regards Martin

@@ecfibreglassuk You are very welcome, I love watching these, when that little golden nugget shows up making me go "well I didn't know that would work" or "we will be trying that" is always a treat almost as good as when something that is new teck pops up.