How do I know if I have architectural shingles?
Short answer. Look at the roof from the ground: 3-tab shingles show evenly spaced slots and identical rectangular tabs in straight rows, while architectural shingles show irregular, staggered tabs, darker shadow bands and a thicker, layered edge. If you can see a spare shingle, an architectural shingle has two bonded layers, while a 3-tab is a single flat sheet.
From the ground
- Pattern: 3-tab roofs look like a neat grid of equal rectangles with slots lined up every other course. Architectural roofs look random, with tabs of different widths.
- Shadows: architectural shingles have darker strips where the bottom layer shows, giving a shake-like depth.
- Edges: at the rake or eave, an architectural shingle edge looks noticeably thicker.
Binoculars, or a phone camera zoomed in on the rake edge, make this easy.
From records
- Closing documents, the home inspection report or the seller's disclosure often name the roof type and age.
- A roofing permit may list the product.
- Leftover bundles in the garage or attic carry the product name on the wrapper.
Why it matters
3-tab shingles typically last 15 to 20 years in Georgia and architectural shingles 20 to 30. 3-tab shingles are less widely stocked than they used to be, so 3-tab repairs can be hard to match. Insurers also look at roof type and age when writing or renewing policies.
Watch for designer shingles
Some heavier laminated shingles imitate slate or large shakes with bold cut patterns. They are still laminated, just a premium style.
Stay off the roof
Do not climb up to check. Steep or damp shingles are dangerous, and foot traffic scuffs granules off warm shingles. See architectural vs 3-tab shingles and what to expect from a roof inspection.