Chinking
Without chinking to fill the spaces between timbers, log cabins would be draftier and filled with pests
Chinking is both the process of filling the narrow gaps between logs with sealant, and the flexible material used to fill those gaps. The natural shape of a log is irregular, so any gaps between logs need chinking to keep the elements and vermin outside. Space is also left between placed logs to allow for expansion and contraction due to temperature and moisture changes.
In log home construction, the timbers are never placed directly on top of one another. Space for expansion and contraction is always included, and chinking is a flexible sealant.
The timbers in log construction can be run through a saw to create squared, flat surfaces, such as these milled logs. The chinking is the white infill between the logs.
The chinking in this home has been applied to round, peeled logs. Chinking needs to be waterproof, long lasting and flexible, to allow for the logs' expansion and movement.
Chinking is applied very much like the caulk used to seal doors, windows and plumbing systems in a conventional home.
Originally chinking materials were whatever was available nearby, such as combinations of moss, clay, oakum, mud, straw, plants and horsehair.
Modern-day construction uses silicone or polyurethane chinking, which can be textured, tinted or painted to enhance its appearance.