An important difference with these types of pipes is they need to slope away in a downward direction and need to drop at least 20mm for every metre covered. This will make sure that the water runs away freely. In the past, the older type of waste-pipes were made from lead, but modern systems we have fitted today are exclusively made from plastic. Depending on the type of plastic used they can be joined by simple push-fit connectors containing rubber ring seals, compression-type connectors with rubber olives or by solvent welding with special solvent cement that softens and dries to form a strong watertight joint. Potterton Boiler Repairs London use compression joints. In domestic properties these pipes are normally bigger than supply pipes. Wash basins are fitted with a 32mm waste outlet pipe, with the shower, washing machine, sinks and baths use a 40 mm pipe. The WC is a lot bigger with a 110mm pipe which is the same size as a modern soil stack. Potterton Boiler Repair London fit all types of pipework.


How to Cut and Fix the Pipes:

Cut plastic waste pipes using a hacksaw and then remove the burrs inside and out with a half round file. Solvent weld fittings are neat but not permanent, so they are ideal on visible pipework, it is better to use compression fittings under and behind sinks. This is so that you can take them apart for cleaning and also unblock them. If running pipes along an interior or exterior wall, secure them in place using waste pipe clips, which are available in different colours and sizes. Use rawlplugs and screws to fix the clips to a masonry wall, or hollow wall fixings if on plasterboard.


NOTE: Make sure that you use a tester to locate hidden pipes and cables if you intend to drill walls.