[MassHistPres] Architectural Shingles

[slater at alum.rpi.edu]

>The Acton bylaw includes the exclusions for in-kind replacement or
"color of 
>material used on roofs," but if an applicant wants to replace 3-tab
shingles 
>with "architectural," our commission does require an application and a 
>Certificate of Appropriateness.

Can someone explain to me the difference between the 3-tab and the
architectural shingles? I was always under the impression that the
architectural look more like slate or wood shingles because they have
more depth, whereas the 3-tab just look like a plain old asphalt shingle
roof.

Ralph Slate
Springfield, MA