Rick from Grand Bend, Ontario writes: "I need advice on how to strap a block wall for board and batten. The wall is 10 ft. high, and I am wondering how many straps I will need?"
Too few straps and the boards will warp, too many and you are wasting your energy and perhaps blocking ventilation behind the siding.
The answer is every 24 inches, with one near the bottom and another near the top.