Shower construction

Layout study only, not cut dimensions. Recalculate from the final waterproof wall planes and verified drain center. Keep at least 2 inches from the drain opening and remake the required 1/2 x 1/2 perimeter channel with at least 1/4 inch of base below it.

The system is selected; the hole is not. X = 20 is inside the measured 16-to-24 feasible band. The proposed cut leaves about 19.15 inches from the finished driver edge, 32.09 inches from the finished wardrobe edge, and about 10.17 inches fore and aft. Those distances exceed wedi's 2-inch drain-opening minimum. Before ordering today, verify that the corresponding 5-inch floor-hole zone is clear below and that a supported 2-inch waste route can leave it with fall and service access.

Datum conversion: the removed vinyl measured 1/8 in. Add 0.125 in to any cable, opening, curb, or door height previously recorded from its top surface when restating that height from the exposed-subfloor datum. Re-measure after removal wherever a cut depends on the result.

The Click and Seal drain body sits below the floor. The installation uses a 5 in subfloor opening and a 2 in nominal Schedule 40 waste pipe cut flush with the subfloor for a curbed installation. North American HepvO is sold only in 1.25 and 1.5 in sizes, so the current HepvO idea necessarily adds a 2-to-1.5 transition. Keep the waste package held until the underside route proves the reducer position, fall, support and cab-side service access.

Official references: wedi Technical Handbook, Jan 2026 · Fundo Primo installation manual · Click and Seal point-drain manual

1. Dry-fit the intact 31.5 x 76 plywood and mark the finished opening edge. Do not rip or replace it.
2. Crosscut the standard 1 x 2 hinge upright to 72, fasten it through to verified support at C, then field-fit the 1 x 2 head from the remaining board.
3. Dry-fit the 1 x 4 kitchen-side apron with the continuous Wedi curb immediately behind it; keep all apron fasteners out of the curb top and wet face.
4. Dry-fit curb, hinge, stop, gasket and latch on a cheap 19.5 mockup leaf.
5. Waterproof and finish all fixed parts. Measure the finished opening in at least three places.
6. Cut the 12 mm 9-ply Baltic-birch leaf last. Apply the approved reinforced microcement system to its shower face, seal the other face, all edges and every hardware hole, then hang it and add the closing hardware.

1. Tape the raw cutout, seat-aisle center, 18 clear opening, 0.5 overlaps, cable-box end and 18.875 travel.
2. Bench-fit the delivered 4-ft track, hangers, clip stops and BG1 guide on a 19 x 3/4 mockup leaf with a hardwood top rail. Verify the parked edge ends about 1/4 before the cable box.
3. Build structural head and jambs tied to verified cab structure. Wedi does not carry the rail.
4. Install curb, returns and waterproofing without penetrating the wet floor.
5. Measure the finished head-to-curb opening, then fabricate and coat the final leaf.
6. Install replaceable seals and independent closed and parked travel latches.

Why both: the fan provides dependable extraction; the porthole adds daylight, passive parked ventilation and a large optional make-up opening. At roughly 50 cubic feet, 41 CFM is about one theoretical room-air change every 75 seconds. Long low-power operation and airflow behind garments matter more to wet-gear drying than a brief 200 CFM purge.

Control: provide OFF / LOW / HIGH plus a timer or delayed shutoff. A normal shower wants an after-run; wet towels and wetsuits may want several hours. The 12 V positive feed uses the manufacturer-specified 500 mA fuse. Do not bury the switch, fan, sleeve seals or cowl fasteners behind permanent finish.

Manufacturer references: VETUS FAN12 manual · VETUS SCIROCCO · VETUS PW201P

1. Release the core kit: mark drain X/Y, inspect the 5-inch zone below it and prove a supported 2-inch waste route. If clear, order US2000001 and one bag of PRO-SET US5076012 today.
2. Close dry-structure measurements: 80/20 spacing and coplanarity, selected fixture centers, every cab bolt head, full-size upper-shell/curved-ceiling profile and both door datums.
3. Get written approvals: wedi attachment/bond methods, the full microcement-over-wedi system, and the separate reinforced microcement sequence over the moving 12 mm Baltic-birch D1 leaf. Ventilation approval is deferred with the parked package.
4. Make full-size mockups: D1 inward swing and seals; D2 with its delivered uncut rail, hangers and guide; the paired curved-ceiling ribs; curb positions and proposed floor/drain center. Preserve the fan/porthole wall reservation but do not cut it.
5. Expose the floor datum: dry-lay the Fundo and curbs, mark their exact bond footprints, then score and remove the 1/8 vinyl only inside those lines. Preserve the sheet beneath the wardrobe and across the kitchen, terminate it at the dry curb/boundary face, and protect/seal that dry-side edge. Inspect flatness, stiffness, seams and damage; repair before layout.
6. Rough in below the floor: drain, supported waste line, trap/valve and service access. Pressure or leak test before covering.
7. Build dry structure: driver furring and fixture blocks, cab overlays/ribs, cable box and conduit route, paired ceiling profile ribs, five transverse battens and two-layer 3 mm curved skin, D1 fixed frame and D2 structural head/rail backing. Keep the parked fan/porthole reservation clear.
8. Dry cut the waterproof shell: Fundo base, both curbs, wall panels, ceiling panels and door openings. Label every piece. Do not cut a ventilation opening until that package is reopened and selected.
9. Set the floor system: waste pipe, Click and Seal drain, Fundo base and curbs using the selected product manual.
10. Install walls and ceiling: maintain specified framing, fastener spacing, edge support, sealant beads and penetration details.
11. Test waterproofing: cure as required, then flood/leak test and inspect below and from cab access.
12. Finish fixed surfaces: approved primer, mesh/base, microcement and sealer with slopes and gasket lands preserved.
13. Fabricate door leaves last: measure finished openings, apply the approved reinforced microcement build to the D1 shower face, seal its remaining faces/edges/holes, finish D2 as specified, then hang and seal.
14. Commission for travel: hose test, drain test, door-cycle test, vibration/rattle check and positive latch check. Add fan, cowl and porthole tests only when the parked ventilation package is built.

The complete kit is the preferred order because it bundles the selected base, drain, curb, stainless cover and enough 1/2-in wall-system material for this takeoff. The computed 1/2-in requirement is 39.0 sq ft net / 46.0 with waste. The kit's standard three-wall coverage is larger. The separate 1/4-in panels below remain a later approval item.

1. Today / release the core kit: leave the vinyl intact, mark X = 20 and centered Y on top of it, inspect and photograph directly below the entire 5-in hole zone, and prove where the supported 2-in waste can run. If clear, order US2000001, US5076012 and one spare US5000013 cartridge.
2. When the kit arrives: dry-lay the base and both curb cuts first. Mark their exact bond footprints, then selectively remove the 1/8 vinyl inside those lines only. Inspect the exposed structural subfloor and remeasure cable/opening heights from subfloor = 0.000.
3. Waste: choose and test the supported 2-in route, trap/HepvO configuration, reducer if any, fall and cab-side maintenance access before cutting the 5-in hole.
4. Driver structure: measure 80/20 spacing, connection points and coplanarity. The 52.5 room width already starts at its room-side face.
5. Fixtures: order the selected Scandvik 14140 today. When it arrives, dry-fit the mixing bridge, rail, hand sprayer and hose, then mark the two 5/8-in mixer penetrations, rail mounts, adapter depths and service clearances before placing any 3/4 blocks.
6. Cab wall and ceiling: record maximum bolt projection; make a full-size shell template; cut paired ribs from that template, not the 14.335-in reference radius, and dry-fit the five transverse battens before laminating skins.
7. D2: confirm the PC100/200 hanger pack and 4-ft short track with Woodward's, then record the delivered section depth, trolley centers, stop positions, minimum head clearance and BG1 guide engagement before trimming anything.
8. Microcement: get written approval for the complete system over wedi in a moving vehicle, including joints and maximum movement.
9. wedi: get written attachment direction for the vehicle framing and approval for 1/4-in panels on the kitchen plywood and wardrobe. The current Wedi manual already permits field-cutting the base, subject to its 2-in drain clearance and 1/2 x 1/2 channel rules.
10. Ventilation: no action is required for today's core order. Keep the reserved fan/porthole zone clear and reopen the package before closing or cutting the cab wall.