rolled

I have to replace my windows board and was thinking of buying some length of windows board and cut to size than machine the side and make it rolled edge as per the front having a nice 45° sharp corner. I got a router but never done any rolled edge. is there anyone helping me to understand what...

I blocked up the old car port to convert it domestic use. It has a membrane under the conc slab but building control say I also need a dpm over the slab and slightly up each wall: makes sense I suppose, it'll have a plywood floor + engineered wood, on battens. What type of membrane do I need...