Browse Forums General Discussion Plumbers 'can be' plumbers, made all the worse by self certification which the building surveyor invariably accepts as proof of compliance! The good thing is that you know know. 3 4893 DIY, Home Maintenance & Repair 3 pipes are coming from upstairs bathroom. 40mm from bathroom sink, 50mm from shower and another 50mm from the bathtub. Highly unlikely that any of these will be open at… 2 873 PM me your email. I have a build excavation calculator you can use based on your plans to double check what your builder is telling you. Cheers Simeon 1 10288 |