Log-Lok Spline and T-Jamb System

Logs must not only fit tightly with each other, they must be snug with adjoining windows and doors. The tricky part is that if these joints are too rigid, then normal log settling can add stress to or even damage adjoining components.

That’s where Heritage Log Homes’ Log-Lok spline and T-jamb system saves the day. Our log butts, window jambs and doorjambs are outfitted with perpendicular strips called “splines,” which fit into grooves that are mill-cut into the butt ends of adjoining logs.

That way, log wall segments are allowed to settle naturally, leaving the splines to float freely up and down within the grooves. The result is a flexible joint that also provides an excellent seal and minimizes air infiltration.