Curbless shower: slope, structure and waterproofing before tile

A curbless shower may require lowering the floor without arbitrary joist cuts or waterproofing breaks.

Decision triage

VERT / GREEN · JAUNE / YELLOW · ROUGE / RED

What the professional checks

The professional checks structure, slope, drain, membrane, upstands, room threshold, deflection and pre-finish testing.

Official sources

Sources checked: 2026-08-24

Related path

Continue with the right tools

These links connect this page to the next useful checks and decisions without repeating the full content.

Plan a complete construction projectConnect feasibility, design, permits, concealed work, commissioning and closeout.Open →Check permit triggersPrepare the questions and documents to confirm with the local authority.Open →Check a contractorDocument licence, insurance, scope, payments, changes and warranties.Open →Update a construction costEscalate a historical cost using comparable index values.Open →Prepare pre-delivery reviewRecord documents, enclosure, systems, finishes and deficiencies before closeout.Open →

Tools related to this issue

V14

Systems to check before closing the work

V14 connects envelope, air, fire, structure, water and code instead of treating each project in isolation.

Renovation dependenciesShower waterproofingLoad-bearing walls and openingsRoof penetrations and flashingCode versions
V16

Advanced diagnostics to cross-check

V16 connects water, soil, climate, safety, materials and seasonal use to existing projects.

Drinking-water quality and treatmentRoof snow and iceJobsite safety and silicaRetaining wall and slope
V17

Specialized systems to cross-check

V17 completes gas, soil, water, fire, climate and structural interfaces.

Seismic retrofitWildfire and embers
V18

Specialized diagnostics to verify

V18 connects systems that become costly or regulated when a primary project triggers them.

Low-slope roofRoof deck over living space
V19

Edge systems to integrate into the project

V19 covers interfaces that become important when multiple home systems interact.

Skylight/tubular daylightingGreen roofSIP/ICFDrain-water heat recovery
V26

Often-overlooked service interfaces

V26 connects systems that cross utility, plumbing, HVAC, envelope and metering boundaries.

Electrical service, mast and meter
V27

Project risks and overlooked interfaces

V27 connects payment, water, envelope, ventilation and jobsite details that often create costly surprises.

Gutters, downspouts and roof drainageTile, stone and substrate deflectionSafety glazing, showers and guardsTemporary weather protection during renovationLaundry room leak containment
V28

Finish and service details to verify

V28 connects small details that become costly once finishes are closed.

Slate or clay tile roofingOutdoor faucet: freeze and backflow protection
V30

Shared, access and specialized interfaces

V30 connects projects where multiple systems, owners or rules meet.

Solar PV: roof attachment, structure and flashing
V32

Post-disaster and legacy systems

V32 connects contamination, storm damage, legacy materials and recommissioning before rebuilding.

Hail: roof and envelope impact assessment
V47

V47 interfaces not to miss

These details are small on a drawing but can control water, structure or durability.

Tile movement jointsRoof-wall kickoutRoof-edge drip