Need a class that goes deep on large-format slab curbless showers with hidden linear drains and steam — think 8’x4’ marble, polished nickel trims set flush, and DTV+ tied to Crestron. Ideally IAPMO/ASPE accredited and hands-on; I’m in Palo Alto and want training that respects the aesthetic while covering subfloor recessing, vapor control, and serviceability.
I got the most mileage from ACO’s ASPE-credited linear drain workshop (SF/online): https://www.acouniversity.com — they had us mock up a recessed subfloor and detail vapor seams behind 8’x4’ slabs. One tip that’s saved me on polished nickel trims set flush: dry-fit using a scrap of the exact sheet membrane plus a slab offcut to calibrate thinset build so the trim finishes dead flush after steam-rated layers. If you swap to a liquid membrane, the build can drift enough to throw that alignment.
If you’re local, the Schluter workshop at Bedrosians San Jose gave me the steam-room deep dive and hands-on subfloor recessing I wanted — it’s not ASPE/IAPMO, but it pairs well with @lisa_rod71’s ACO linear drain course for the hardware details (https://www.schluter.com/education/workshops). One tip we now standardize: plan a flush, removable stone access panel (magnets or Keku clips) on the valve wall so DTV+/steam service is doable without touching the 8’x4’ slab — remember “perm ≤ 0.5” for continuous-use steam.
On my last 8’x4’ marble steam build, the move that saved me was pre-calculating the recess so that after membrane and mud I still had 3/8" of fall to the slot drain flange; I dry-set the slab and used feeler gauges to keep the grate frame perfectly flush to the polished nickel trim while the thinset kicked. Small caveat: I now spec a ventilated cabinet with a leak sensor under the DTV+/steam gear and leave a “pull string” for the Crestron tie-in so any service doesn’t wreck the aesthetic.