How to Install a Fiberglass Shower Base

Written by delialah falcon
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One do-it-yourself project that is common for homeowners is installing a new fibreglass shower. Whether replacing an old shower, renovating an existing fibreglass shower pan or constructing a bathroom in a newly built home, this project is relatively simple to complete.

Skill level:
Moderate

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Things you need

  • Fibreglass shower
  • Tape measure
  • Pen
  • New drainpipes
  • Hot and cold fixtures
  • Soldering iron
  • New shower head
  • Insulation
  • New fixture knobs
  • Mortar mix
  • Panel adhesive
  • Silicone caulk
  • Ceramic tiles (optional)
  • Paint(optional)
  • New shower door

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Instructions

  1. 1

    Carefully remove any existing shower enclosures completely. Remove any existing shower fixtures as well. Leave the old shower pan in place.

  2. 2

    Place the fibreglass shower pan over the old shower pan. Measure the fit to be sure they are the same size in order to avoid leaking water or issues with drainage. Remove the existing shower pan.

  3. 3

    Unhook the drainpipes and remove them. Remove any pieces that remain. Clean away any debris or residue.

  4. 4

    Place the shower pan in the same spot where the old pan was. Use a pen to mark spots on the floor indicating where the drainpipes will be installed.

  5. 5

    Remove the pan and set aside. Cut a hole on the pen mark.

  6. 6

    Install the drainpipes along with the P-trap. Run the pipeline to the main drain.

  7. 7

    Follow specifications and install both the cold and hot fixtures. Arrange the pipe fittings so that they are in line with the fibreglass stall. Cut any existing copper pipes as necessary, soldering them into the proper place accordingly.

  8. 8

    Install the new shower head.

  9. 9

    Set the shower pan into the proper position. Place insulation between the wall studs that are exposed so as to decrease the chance of heat and moisture leaking out of the shower. Install the fixture knobs and test for leaks in the plumbing.

  10. 10

    Follow the instructions on the mortar packaging and mix accordingly. Read the instructions that accompanied the fibreglass shower. Follow the directions for using mortar to create a seam between the drain an the fibreglass pan.

  11. 11

    Measure for the holes that will need to be cut for the shower fixtures and the shower head. Cut out the holes accordingly.

  12. 12

    Apply the panel adhesive to the edges of the panels. Repeat on the wall studs located on the panel wall.

  13. 13

    Install the enclosure panels at the base, working up the panel wall. Apply silicon caulk to the seams between panels to seal completely

  14. 14

    Attach cement board above the wall panels. Leave a 1/8-inch space between the shower walls and the board. Seal this space with silicone caulk.

  15. 15

    Install your chosen tiles or paint the walls, depending on your preference.

  16. 16

    Attach caulk to the seam of the shower and drywall. Repeat on the side an bottom tracks of the shower door, the wall and the bathroom floors. Let all caulk dry.

  17. 17

    Install the shower door along the track.

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