How to Install a Cultured Marble Shower Stall

Cultured marble showers are less expensive than ceramic tile and much easier to install. Cultured marble is made from a mixture of marble dust mixed and polyester resin.

The sheets can be cut to size on the jobsite, and are installed on the walls with adhesive over a waterproof pan. Silicone caulk is then used to seal any joints.

Cultured marble comes in a wide range of colors. Accessories include soap dishes and built-in bench or corner seats.

Watch this video to find out more.


  1. My shower is culture marble. Long story short, we thought the contractor would install a mold as the base for our shower, instead they just put a slab a culture marble on it as the base. It doesn’t properly drain and leaves a puddle at the edge of the shower. How do i get it replaced? Suggestions?

  2. In a cultured marble shower, is a shower pan required. Please explain what the shower pan would look like, color, how it is installed. Thanks.

  3. I had to regrout my cultured marble shower. First I scraped black mold/mildew from the base edges and where the shower door contacts the marble. I let the cracks dry out using a fan in the shower stall for a few hours turning it off for overnight. I’ve done this about a year ago and am still finding mold and mildew. It seems to gather mostly at the corners. Can you suggest a grout to use or a method of grouting that professionals use to keep the black stuff from forming in the shower stall ? It appears that new installations never have this problem for many years. HELP?

  4. Can cultured marble walls just be glued to the sheet-rock, or do you have to seal the sheet rock before you put up walls? Also does under the pan also need to be sealed also?

    Melton Keith

  5. Can you suggest a grout to use or a method of grouting that professionals use to keep the black stuff from forming in the shower stall where the floor and wall meet? We have used a plain silicone grout and it does not dry or hold. It feels like buddy even after a few weeks. Thank you.

  6. your video is an over view- not an install guide. I would like a more detailed install video covering all aspects of the install. .

    • Hi, Dennis, features home improvement advice from the nationally syndicated TV show “Today’s Homeowner” and its experts.
      We don’t sell construction products on this website, but we encourage checking your local home center for these materials.
      Good luck!

    • Hi, Victoria,
      All roll-in showers must meet Americans with Disabilities Act requirements.
      Since this is a potentially changing document (and we don’t update our website’s comment sections) we recommend checking ADA’s most recent guidelines before selecting a shower or modifying one.
      Good luck!


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