Plastic pipe is popular
for do-it-yourself
plumbing projects.

About this Project

Plastic plumbing is popular with do-it-yourselfers because it is inexpensive and easy to work with. Plastic pipe cuts with an ordinary hacksaw, and goes together without special tools or techniques. You simply clean the burrs from the cut, prime, and glue the parts together.

Still, installing plastic pipe requires attention to detail, planning ahead, and doing things in the right order. If you make a mistake, the parts cannot be disassembled. You'll have to cut out the faulty section, throw it out, and start again.

There are various types of plastic, so check local codes to make sure you are using the right type for your purpose. In most localities, either ABS or PVC are accepted (sometimes even required) for drain lines. Many localities do not accept plastic pipe for supply lines; others specify CPVC. Do not mix ABS with PVC. Each expands at a different rate, and each uses a differently formulated cement. Plastic pipe is not as stiff as metal. Be sure to support horizontal runs every 4 to 5 feet.