How to Make a Shower Splash Guard

Mark diagonal lines from one corner to the other on two tiles to divide them into triangles.

Cut the tiles along the lines with a tile scribe. To cut a tile, place a straightedge against the line and score the tile, applying firm pressure. Place a taut, straight wire under the tile, aligned with the cut. Push down on either side of the tile to snap it.

Create two triangular wood blocks to accommodate the tiles. Create triangular blocks by cutting a square out of a thick piece of wood. Make the square 3/8-inch larger in both directions than the tiles. Cut the square down the middle to make two triangles. Sand the cut ends.

Measure the cut side of one of the blocks. Cut two rectangular tile pieces to fit the dimensions, using the scribe.

Apply mortar to the backs of the tile. Rough up the mortar with a fork and stick the tiles onto the tile, leaving the square sides of the blocks bare. Allow the mortar to harden.

Adhere the tiled blocks in the corners of the tub, using construction adhesive. Allow the construction adhesive to dry.

Spread grout into the spaces between the tubs. Wipe the splash guards down with a damp sponge to remove any excess grout. Wait for the grout to dry.

Run a bead of caulk along the seam where the splash guard edges meet the tub. Run a finger down the caulk to smooth it down.

Allow the grout to fully cure then paint it with grout sealer.