A journal following the history, design, construction and operation of Bernard Kempinski's O Scale model railroad depicting the U. S. Military Railroad (USMRR) Aquia-Falmouth line in 1863, and other model railroad projects.
©Bernard Kempinski All text and images, except as noted, on this blog are copyrighted by the author and may not be used without permission.

March 8, 2009

Roof Shingles - Ridge Cap?

Here is a photo of a shingled roof from a structure at City Point, VA during the ACW. Note how the shingles meet at the peak. How did they prevent rainwater from entering? I don't see a ridge cap. Anybody know how this worked?


  1. Bernie, it looks like individual, long/elongated shingles are placed at the roof-peak as sort of a catch as catch can cap... from this picture, it doesn't look like just having the shingles meet at the top... my 2 cents.

  2. AnonymousJune 21, 2009

    Maybe they didn't get to it? One method was to turn the length of the shingle paralled to the ridge and chamfer the long edge of the shingle to the pitch. Now lay another forming an inverted "V" and cover the ridge of the roof over lapping as you go' Cedar shingles were a popular roofing material.

    Mark Andersen

  3. I think the answer to your inquiry is the material of the shingles and accurate placement of each piece on the roof. Materials used to make shingles like asphalt, slate, wood and shake are water-resistant. These materials prevent the water from getting inside the structure until it runs off. And, of course, the accurate and precise placement of each piece is the key to this phenomenon. There should be no gaps in between to ensure that the water will not penetrate the roof. [Hugh Dinatale]