Evening. Having a new bathroom fitted next month. The vent waste pipe that goes out the roof is in the corner of the bathroom. This being in the way stopping the bath fitting flush with the wall. Anyone recommend a waste pipe air cap that I can use so I can install this just underneath the bath top so the bath can sit flush with the wall. As I have seen these vent caps (unsure of actual name) in some places I visit. I would just cut the existing waste pipe in the loft and cap it off so if needs be it can be used in the future is that’s possible. As you can tell I’m no plumber or waste pipe expert. Is it even possible to do what I want? Any issues?l doing this? Thanks