Shower Pan Mildew Remodel

Typically we hear this request a lot, which is why this is one of our specialties:

Request: homeowner complained about a mildew/musty odor that was permeating from the bathroom.

Diagnosis: the shower pan had a leak and crawling under the house to inspect proved this, with rotted decking and joist and a puddle of water

Job description:
1. Demoed tile on shower floor and also up the walls three courses high so that our new rubber shower pan could later be installed on the walls at a height of 1 foot
2. Removed decking
3. Treated the exposed wall studs and floor joists with Kilz primer to seal in odor and protect wood from any potential mold growth in the future
4. Removed/replaced shower drain and p-trap with new PVC attached to existing cast iron drain pipe with a rubber coupling. The new shower drains allow the shower pan to be tucked into it. This prevents water from ever coming in contact with the wood sub-floor.
5. Sistered to floor joists and wall studs with new pressure treated pine
6. Installed new pressure treated decking
7. Poured a concrete subfloor, starting at 2″ at the walls with a 1″ fall towards the drain. This allows the shower pan itself to have a grade to it. The fact is water will always find it’s way through the grout and mortar it’s set in. By creating a concrete subfloor with a fall underneath the shower pan, the water will now run down the decline into the new drain.
8. Installed new shower pan and tucked into new drain pipe. Ran the pan up the walls 1 foot and applied fasteners only at the top(no holes). Rolled new pan over the front step as well
9. Installed 1/2″ Hardi-Backer to wall studs
10. Set bed of mortar with the same fall as the concrete sub-floor.
11. Laid 4×4 ceramic tile on floor and walls with 1/8″ grout joint to match existing
12. Grouted with sanded grout
13. Sealed grout with the recommended 2 coats
14. Reinstalled existing shower door

Shower Pan Bathroom Remodel After