copper from the wood. I also wrap 4 to 6 inches up the walls to pro- tect the pan sides.
MUD FLOOR OR
DECK MUD To create a shower floor from scratch, I recommend using what is commonly referred to as “dry pack mortar” or "deck mud". Deck mud contains three ingredients: regular Portland cement, sand and water. That’s it. A properly mixed and installed deck mud will create a shower floor that will last for years and years. The ratio is very important to achieve the correct consistency and stability. You want 5 parts sand to 1 part cement. You want just enough water to dampen the mixture. The easiest and most con- venient way to get your mixture correct is to buy the Sand and Topping premixed bags which come already mixed at a 3: 1 ratio. For a 60-lb. bag you need only add 30 lbs. of sand to get to the proper ratio.
DRAINS AND WALL
PENETRATIONS On mud floors the mortar covers all areas. Allow for a mini- mum 1/4-in. space between drains, pipes, lights or other penetrations and surrounding ceramic tile, stone or brick. To fill that gap, use a water- proof sealant and foam backer-rod to seal the space. Do not use grout, joint filler or thinset mortar, as it will not last with expansion and contraction movements around the pipe.
WATERPROOFER Apply mesh tape to all corners and seams and then apply a coat of modified latex thinset mortar over them. The mesh tape strengthens the joints and bonds to the thinset.
Allow the thinset to dry completely. Apply the liquid waterproofing material with a 1/2- or 3/4-in. nap roller or brush. Thoroughly brush the corners to ensure complete coverage. Coat the walls complete- ly. Then, coat floor to keep water out of the copper pan. As I mentioned earlier I use the Hydro Ban product, and the first coat dries in 45 minutes. The sec- ond coat can be added after the first dries. One gallon covers 50 square feet for two coats.
Apply the liquid waterproofer with a brush or nap roller (1/2" or 3/4").
Note the mesh tape in the corner which strengthens the joints and helps bond to the thinset.
You can start at the top and work along the perimeter.
Apply mesh tape to all corners and seams and then apply a coat of modified latex thinset mortar over them.
Thoroughly brush the corners to ensure complete coverage.
For the project I used the Hydro Ban waterproofing product from Laticrete.