/kɔk/

One challenge with this job was finding an unobtrusive caulk.  Caulking where the siding meets the corners and window/door trim is a necessity since we re-use (whenever possible) boards in the same location they were removed from. This means that we don't cut those boards to length and are stuck with the tolerances the house was originally built to. Since it was built to have the joints caulked and everything painted, the gaps aren't negligible.

I tried a number of colored caulkings that I was able to pick up locally. I tried DAP Alex Plus in Dark Bronze (way too dark), Cedar Tan (way too light), and Brown (too brown ... our siding has more of a reddish hue). I also tried Big Stretch in Redwood (too red ... our siding has more of a brownish hue) and Woodtone (too brown and too light).  You can apply the Sikkens finish on top of these and that helps with the match in all cases, but none of them were very good.

The answer to our problem came from the log-home-building industry.  A company called Timber Edge Products, LLC out of Minden, NV manufactures a line of caulkings called Timber Match in the following woodsy colors

The colors in which Timber Match caulking is available.

that are intended for log-home building.  They were kind enough to send me samples (Cedar, Redwood, and Café) and the Café works really nicely.  The picture below shows one of the caulked joints.  Looking at the house, you don't notice the joint at all unless you are looking for it.  I may try some of the Sikkens finish on top of the caulking to bring it even closer to the color of the wood, but this is an excellent match to begin with.

This image shows the caulking of the joint where the siding meets the cornerboards.