Guide to Installing a Shower Door

Illustrated guide to installing a shower door, including step-by-step instructions and shower installation diagrams.

| July/August 1988

Guide to installing a shower door with step-by-step instructions and diagrams. (See the shower door diagrams in the image gallery.)

Guide to Installing a Shower Door

[1] First, go over the manufacturer-supplied instructions carefully; the steps that follow should clarify and augment the directions specific to your door. Begin by measuring the distance between the facing walls of the tub enclosure, but don't cut the lower sill of the door frame until you've trial-fit the wall jambs. Any contours on the wall or at the corners will require that you mark, then cut or file, the sill and jambs so they meet the wall squarely. Use a fine-toothed hacksaw to make your cuts.

[2] Temporarily fasten the sill and jambs in place with masking tape. Use a level to plumb the jambs, then mark the location of the jamb holes and the position of the sill with a soft lead pencil.

[3] Use a sharp center punch to dimple the drilling marks. If the jambs are to be fastened through ceramic tile, nick the glaze by tapping the punch lightly, taking care not to hammer the tile with enough force to crack it.

[4] Drill the jamb-mounting holes with the proper size of bit. A standard high-speed twist drill can be used on fiberglass, vinyl and wallboard panels. Use a masonry bit for ceramic tile. Insert screw anchors into the holes if they're called for.

[5] Fill the caulk groove on the underside of the sill with silicone or latex sealant. Apply a second bead of caulk to the tub ledge within the marked lines, or to the flat part of the sill, next to the groove. Set the sill in place, then fasten the jambs to the walls with the screws provided.

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