Guide
Asphalt Shingle Roofing Guide
The most common residential roofing material — here's what to know before you replace yours.
Shingle types
Three-tab shingles
Flat, uniform appearance and a lower upfront cost. Generally a shorter service life than architectural shingles.
Architectural (dimensional) shingles
The most popular choice for replacement projects. Layered construction provides a textured look and longer service life.
Impact-resistant (Class 4) shingles
A heavier, more durable shingle option. Some insurers offer premium discounts — confirm with your carrier.
Expected lifespan
- Three-tab: typically 15–20 years.
- Architectural: typically 20–30 years.
- Impact-resistant: similar to architectural with added durability.
What a quality install includes
- Tear-off of existing shingles and decking inspection.
- Ice-and-water shield in valleys and at eaves.
- Synthetic underlayment across the field.
- Proper starter strip, drip edge and step flashing at walls.
- Ridge vent or other balanced ventilation strategy.
- Hand-nailing or properly calibrated nail guns.
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