Masonry: movement joints, expansion and cracking
Distinguish expected wall movement from support, corrosion or structural problems and avoid rigidly filling a joint intended to move.
VERT / GREEN
Map existing joints, corners, long walls, openings and support changes.
JAUNE / YELLOW
Brick and masonry change dimension with moisture/temperature; missing or poor joints can concentrate cracking.
ROUGE / RED
Crack with displacement, unstable veneer, corroded lintel or movement joint rigidly mortared: diagnose before cosmetic repointing.
Quick triage
What the professional checks
The masonry/structural specialist checks support, ties, lintels, thermal/moisture movement, joint locations and sealant compatibility.
Official sources
Checked 2026-08-23
Tools related to this issue
V16
Advanced diagnostics to cross-check
V16 connects water, soil, climate, safety, materials and seasonal use to existing projects.
V27
Project risks and overlooked interfaces
V27 connects payment, water, envelope, ventilation and jobsite details that often create costly surprises.
V30
Shared, access and specialized interfaces
V30 connects projects where multiple systems, owners or rules meet.
V34
Use, excavation and construction constraints
V34 connects use permits, soil, excavation, neighbouring structures and public-space logistics before hard-to-reverse work.
V47
V47 interfaces not to miss
These details are small on a drawing but can control water, structure or durability.