Shiplap siding is a siding profile where boards fit together with overlapping rabbeted edges.
Why It Matters
Shiplap creates a clean horizontal look, but exterior shiplap must be detailed for water management, movement, and long-term durability.
Common Problems
Common issues include using interior-style shiplap outside, poor sealing, inadequate clearances, and missing flashing or weather-barrier integration.
Building Codes & Industry Standards
Exterior shiplap products should follow manufacturer requirements for installation, fastening, finishing, clearances, and wall preparation.
Exterior Echelon Notes
Exterior Echelon separates profile style from product type so homeowners understand both the look and the performance requirements.
