Architectural design for timber and custom homes in Sapporo, Asahikawa, and across Hokkaido

DOVETAIL LOG

Authentic log living with the enduring beauty of dovetail craftsmanship

Dovetail log house porch in Japan

The traditional dovetail notch creates a bold and timeless square-log home. By combining solid wood logs, precision machining, and spline construction, we reduce unwanted gaps while preserving the natural texture of the wood, achieving both comfort and long-term durability at a high level.

200-year durability concept Traditional dovetail notch Solid square logs Spline construction
Dovetail log house porch in Japan
Dovetail log house exterior in Japan

Construction: dovetail notch joinery with spline detailing

A dovetail log house is a traditional square-log construction method in which each corner is joined with a “dovetail” notch. In addition, spline construction helps reduce gaps in the log wall, lowering the risk of air intrusion and shifting that can occur in more conventional log structures. This allows the home to retain the natural appeal of wood while improving day-to-day comfort.

Material: the substantial character of solid square logs

Thick solid square logs convey the beauty, warmth, and tactile quality of real wood directly. Because each member is visible as part of the structure, the material itself shapes the atmosphere of the home, and the way the wood matures over time becomes part of its long-term value.

Performance: preserving log-house comfort with better precision

While making the most of the appeal of real log walls, we carefully design the notch areas and wall joints with close attention to detail. By building up airtightness and waterproofing details step by step, we aim to balance the character of a true wood home with practical comfort, even in climates with significant seasonal temperature changes.

Philosophy: protect the beauty of wood and create a home that lasts

The appeal of wood is not only visual. Its value deepens when it is designed to be lived in and cared for over many years. By considering the logic of dovetail notch joinery, methods that reduce gaps, and maintenance planning as one integrated system, we pursue log homes that can be enjoyed across generations.

Planning Point

Performance depends on how the corners, joints, and openings are detailed

In dovetail log house design, the detailing of notches, wall joints, and openings has a direct impact on the final performance of the home. We place strong emphasis on details that preserve the visual beauty of the wood while also achieving airtightness, waterproofing, and maintainability in a realistic way.

FEATURES

Why choose a dovetail log house

Distinctive beauty of dovetail notch joinery

A traditional joint detail that gives the home both identity and architectural character.

A durability concept proven over generations

A long-life approach inspired by the enduring performance of traditional square-log construction.

Spline construction to help reduce gaps

Improves wall precision and helps reduce common issues such as air leakage and log movement.

Rich texture of solid square logs

A substantial material expression that brings warmth, depth, and authenticity to the living space.