Our Exclusive Construction Details
While the GLH Smart Log profile is vitally important, but there are other considerations for log wall construction. GLH has developed construction details and methods taking all these into account. These include, but are not limited to the corner and butt joints, the door and window frames, and the attachment of interior walls to the log walls.
Spline Grooves for Butt Joints
Logs don’t economically come long enough to span the full width of most walls and there are times they must butt into one another at corners. Where they do run into each other is we called that a butt joint. This joint must be sealed properly to make it weatherproof, and we make that easy. We make it easy to weatherproof butt joints. All logs from GLH are manufactured with a vertical groove on both ends of the log. When the logs are set in place, these grooves line up and we insert a spline gasket in the grooves. The gasket material is a closed cell foam that will prevent air and water infiltration and is pliable so it will compress. A special “shoehorn” tool is used to insert the spline gasket since it is a tight fit. The shoehorn is included with every kit. In addition, since there will be logs cut to fit at the job site, it will be necessary for additional groove cuts be made at the site. GLH includes three jigs with every kit to ensure that the builder can quickly and easily cut the grooves for the butt joints.
Pre-cut Splined Window and Door Bucks
Installing the proper size door and window bucks (full width lumber made to surround the openings for windows and doors to which the finish material is attached) has never been this easy! The door and window bucks for the log walls come from GLH ready to attach together in the sizes called out on your blueprints. You won’t have to cut your own bucks to fit. Each set of bucks is cut to length and individually wrapped and identified by name. You simply attach the pieces together and place it in the log wall. The two side pieces of the buck have wood splines that will align with the groove notches cut in the end of the logs. As the logs settle they will slide down the buck spline without affecting the windows or doors. A special sealer is also used at the spline which will provide an air and water seal without interfering with the settlement process. GLH kits include the gaskets that go above each buck to seal the settlement space above each door, window and fireplace opening. We also provide special shaped gaskets that seal between the logs and the trim pieces. Note: The precut bucks are included when the windows and doors are purchased from GLH. If the windows and doors are not purchased from GLH, random length bucks are available for cutting on the job site.
Exclusive GLH Wall Guides
Typically, a log home is constructed with log exterior walls and 2 X 4 and 2 X 6 frame walls that partition off or divide up the interior living space into rooms. We call these framed walls the “partition” walls. It is very important that these partition walls be attached to the log walls so that they are secure but also in a manner that allows the logs to naturally settle. The GLH wall guides provide a very secure attachment of the frame walls to the log walls but allows for the any log settlement. An added advantage to the wall guides is that they provide a very strong and stable vertical surface. This minimizes the chances of a log wall bowing over the years.
Logs Around the Subfloors
We recommend setting the exterior log walls on the foundation walls rather than onto the subfloor. To do this, GLH will provide includes two additional rows of logs to build up the height of the subfloor (sill plate, joist, and floor sheathing). So These two rows of logs will encircle, or go around, your subfloor. GLH is the only company to provide this structural improvement. We feel it is extremely important to have the logs set directly on the foundation walls as it allows you to bolt the log wall to the concrete foundation, which provides higher seismic and wind ratings, it is more energy efficient, and it even looks better!