Tile, stone and substrate deflection

Verify stiffness, flatness, moisture, membranes and movement joints before installing brittle finishes.

VERT / GREEN = entretien/documentation · JAUNE / YELLOW = vérifier avant travaux · ROUGE / RED = arrêter le DIY et faire valider.

Floor vibrates or deflects
Do not compensate with more mortar: verify framing and substrate. Cracked/damp substrate
Diagnose movement and moisture before membrane or tile. Large area without planned joints
Plan movement joints for the assembly and manufacturer. Stable documented substrate
Record thicknesses, spacing and products used.

What the professional checks

Verify structure, substrate and compatibility
Define membranes and movement joints

Official sources

CNRC — Guide illustré Partie 9

Checked: 2026-08-22

Related path

Continue with the right tools

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

Measure and organize roomsKeep dimensions, levels, openings and surfaces before purchasing.Open →Compare materialsCompare material families by use, limits, care and cost.Open →Prepare the shopping listGroup materials, tools, parts, quantities, prices and store by project.Open →Compare price observationsCheck dated prices before turning an estimate into a purchase.Open →Choose the required toolsReview the tool dictionary and intended uses before starting.Open →

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 waterproofingCode versions

V16

Advanced diagnostics to cross-check

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

Masonry and lintelsCuring, drying and acclimation

V47

V47 interfaces not to miss

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

Tile movement joints