I've had a rotten fascia board replaced and noticed the gap between the fascia board and the slates seems pretty large, maybe a couple inches. Does it need a drip edge installed or has the fascia just not been made big enough? Or is it all ok? It's on an extension which is about 30 years old and don't think there was a drip edge there already but also don't remember the gap being as large before the rotten panel was removed. Any advice appreciated. If it just needs a extra thin strip cut and fixed that seems easy enough. It was also fitted with redwood (PAR) but only painted on the external faces (except the top noticed in the photo). Should I paint the inner facing side too?