01-03-2010, 04:52 PM
faraway Wrote:What are they made of? Is it tar paper very old and with a lot of washed out black tar? I know some techniques to do roofs with tar paper on model roofs but none will produce something like that..
Reinhard, my guess is that the roofs are what is known as composition roofing, otherwise called tar and gravel. Roofing felt is applied to the sub-structure with the joints sealed with tar, then the entire roof is covered with tar and a layer of pea-gravel.
Wayne