DIY & Home Improvement

it also doesn't clog as easily and snakes better if it does clog. I am using all glue type PVC as I replumb my 100 year old house. Things to remember, especially when using glue type PVC draining...Always be sure all drains enter the main drain above the trap (dish washers, and dual sink drains). Always use a trap with a cleanout plug in the bottom. Always dry fit the entire drain before gluing, then use a sharpie to draw a line vertically across the joint so it all goes back together exactly the same as the dry fit. On compression joint PVC drain, as someone else stated, the foam rubber seals are for adapting from plastic to metal. If using compression, always buy the right size as opposed to the 1 1/4 - 1 1/2 combo kits. Bathrooms are generally 1 1/4" and kitchens are 1 1/2".