The Most Common Cause: Hair

Shower drain blockages are almost always hair and soap scum combined. Hair binds together and catches on the drain interior, then soap and body products coat it into a solid mass. Regular removal prevents the slow drain from becoming a full blockage.

Method 1: Remove the Clog by Hand (Most Effective)

  1. 1

    Remove the drain cover

    Most shower drain covers unscrew with a Phillips screwdriver or lift off directly. Some slide or twist. Remove and set aside.

  2. 2

    Pull out the hair clog

    A drain hair removal tool (Tubshroom, Drain Weasel, or similar — $5–15 from hardware stores) grabs and pulls out hair clogs very effectively. Alternatively, bend a wire coat hanger into a hook, insert and twist to grab the hair mass. Pull it out — it is unpleasant but very fast and effective.

  3. 3

    Flush with hot water

    Pour a kettle of boiling water down the drain to flush away soap residue. Replace the drain cover and test the flow.

Method 2: Baking Soda and Vinegar (For Slow Drains)

  1. 4

    Pour boiling water first

    Pour a full kettle of boiling water slowly down the drain. This softens and loosens soap scum buildup.

  2. 5

    Add baking soda then vinegar

    Pour 1/2 cup of baking soda down the drain. Follow immediately with 1/2 cup of white vinegar. The fizzing reaction helps break up organic buildup. Cover the drain (with the drain cover or a cloth) to direct the reaction downward.

  3. 6

    Wait 15 minutes then flush with hot water

    Leave for 15 minutes then flush with another kettle of boiling water. Repeat monthly as maintenance.

Method 3: Chemical Drain Cleaner (Severe Blockages)

Products like Drano or Liquid-Plumr dissolve hair and grease blockages chemically. Follow product instructions carefully, ensure ventilation, and wear gloves. Not recommended for regular use — harsh chemicals can damage older pipes and seals over time. Use physical removal first.

Prevent future clogsA drain hair catcher (TubShroom or similar) sits in the drain and catches hair before it enters the pipe. Empty it after every shower. This is the single best investment for preventing shower drain blockages — costs $8–15 and eliminates the problem almost entirely.

Frequently Asked Questions

Baking soda and vinegar works well for minor buildup and slow drains but is not powerful enough for solid hair clogs. If drain flow has not improved, the physical removal method (hook or drain tool) is needed. The fizzing reaction of baking soda and vinegar looks impressive but is relatively mild chemically — physical removal or a proper enzymatic or chemical drain cleaner is more effective for established blockages.
Try a rubber grip pad for more torque. Check if it screws the other way (some are reverse-thread). Some covers are held by a single central screw that may be hidden under a plastic cap — prise the cap off with a thin screwdriver. Very old drain covers may be corroded in place — apply penetrating oil (WD-40) and leave for 30 minutes before trying again.