What is the best way to create an authentic weatherboard wall? I am working on a house where I want to create a weatherboard look for the outside walls.  I'm not certain the best way to go about this.

Currently I'm using the horizontal side of a 1x2 profile brick:



Which gives the following appearance:



I am wondering though if there are any better techniques to create the weatherboard look:



It seems that the 1x2 profile brick has its ridges roughly twice as dense as a true weatherboard exterior.

One advantage of these profile bricks is that their reverse side gives the interior a VJ (tongue and groove) look, which is the interior look of the house that I am trying to model.  



However, the lack of anything larger than 1x2 and the overly dense ridges means that I'm leaning towards looking for other options.
One option would be to use the relatively new bricks with masonry profile:



If you aren't aware, the reverse side of these bricks includes the horizontal lines but leaves out the vertical ones. This allows you to create something like this:



This solutions provides the advantage of less dense horizontal lines, but being that this is a newer part, it also really limits your color selection.

Your pictures make it look like you are trying to build a white house, which is currently impossible using this part as it isn't available in white. The best that you could do is light gray, which is what I used in my example.

There is a 1x4 version of this part that would make construction much easier and sturdier, but it's only available in medium dark flesh at the moment:



This construction also leaves you with a brick pattern on the inside of your wall. It doesn't sound like this is what you want. One solution would be to create a double wide wall, but that may not be feasible in your case.