Timber Science

Timber is often described as “stable” or “reliable,” but that doesn’t mean it’s static. Every piece of wood continues to respond to its environment long after it’s been milled, planed and installed. It absorbs moisture, releases it, expands, contracts and slowly adjusts to seasonal conditions. This movement isn’t a flaw. It’s the defining characteristic of timber—and the reason joinery design either succeeds long-term or starts failing within a few years.

In many period homes across Cornwall and Devon, the timber itself remains in excellent condition. The problem is usually worn sash cords, loose joints, failed seals or years of paint build-up preventing the window from closing properly.