Using the hinges locate and install the lid with the foam sealant in place on bottom of lid. Sand thoroughly and apply at least two coats of marine grade Spar Varnish or similar sealing varnish to top, bottom and sides. Materials and tools lists for toilet tops. Building Your Barrel Drum Unit 1. Choosing the right barrel.
Long life is the best reason to pick a good barrel because urine corrodes plain steel.
You should look for lined barrels. There are two common types of linings. One, a sprayed on plastic, is likely to degrade rapidly. The best lining is baked-on phenolic resin, incorrectly called Teflon lined. It is red-brown in color.