To keep the shower drain relatively free of hair, as hair is the number one reason for clogged shower drains, use a fine holed shower drain cover. This may slow the draining of the shower.
Once a month pour boiling water down the shower drain to help dissolve soap and film buildup.
It is recommended that you service a shower valve once every 12 - 18 months (12 months in hard water areas). A 'service kit' is available for most shower valves and allows for all perishable parts within the valve to be replaced.
All metal parts within the valve should be soaked in de-scalent chemicals and washed off with clean water. Examination of all seals should be carried out and replaced where necessary. The use of silicone based grease is essential on all seals and any moving parts to ensure smooth operation once re-assembly has been carried out.
Clogged Shower Drain
If a shower stall drains sluggishly, try filling the base with an inch of water and plunging. If the clogged shower drain does not respond to plunging, remove the strainer and attempt to clear the blockage with the following two methods. Begin by prying up the strainer with a screwdriver. (Some strainers may have a center screw. Remove it, then pry up.)
1. Push an auger down the drain and through the trap. Push and pull to remove a soap clog. If the auger hits a blockage, pull out the auger. The blockage may come with it. If it doesn't, push the auger to try to force the clog into a larger pipe.
2. If all else fails, try forcing out the blockage with a hose. Stick it in as far as it will easily go, and pack rags tightly around the hose at the drain opening. Hold everything in place, and have a helper turn the water fully on and off a few times.