Shingle stagger…edge-to-edge spacing… single spacing…shingle offset… Call it whatever you want, you should be looking at roof shingle stagger. Stagger is important because, if the spacing is less than 4 inches, water can travel from joint to joint under the shingles and create a leak in the roof. Typical three-tab shingles of years past Take a look at details of a typical three-tab shingle installation (Illustration). The edge-to-edge spacing (stagger) measures 6 inches. It’s easy to see whether there’s a problem with stagger: The tabs a ...
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