The rippled log profile was patented in 1988 by Dwayne Gascho, founder of RippleCraft Log Homes. What Dwayne designed and implemented was an integrated means by which the beauty of a log home could be combined with a building system so sound, stable and secure that it virtually eliminated the twisted log look and drafty environment found in so many of the log homes built today.

The system's basis is the rippled profile, where the ripples themselves serve as the splines. No additional splining channels or spline inserts are necessary. The logs, in effect, keep each other in line and prevent lateral movement. The ripples are precision milled for an extremely tight fit making the use of gasketing unnecessary.

A small bead of expanding foam is applied along the outside channel of the first ripple in each log to add an air infiltration barrier. Air and moisture infiltration are virtually eliminated with this system. Water and air must muscle their way through the foam and travel more than 10" of tightly sealed surface in an 8" log wall to ever reach the home's interior environment.

In addition to the unique splining characteristics of the rippled log profile, each log provides the perfect drip edge to the log directly underneath it.

Here are the most common horizontal interfaces you will find in the industry today. Each is designed to make it easier to mill and stack logs. Alas, none are made to ensure the home's integrity after being built.
The tongue and groove interface is the most common milled interface. It requires the inserting of splines and gaskets in an attempt to keep out air and keep logs straight.
The flat on flat interface is typically marketed by sawmills and others with unsophisticated machinery. Often times a gasket is mashed between the logs to help act as a weather barrier. How do you spell high maintenance?
The Swedish Cope interface is typically used by hand crafters though some milled companies also use the cope. It has a traditional look that is a favorite among, well, traditionalists.