Three-tab versus architectural
A three-tab shingle is a single flat layer with cut-outs, generally rated around 20 years and a modest wind speed. An architectural shingle is laminated from two layers, rated 30 years or more and carrying a considerably stronger wind rating when nailed correctly. The weight difference is meaningful, and so is the impact resistance.
In a hail-prone part of Texas that impact rating is not academic. An impact-resistant, or Class 4, shingle costs more up front but can lower a homeowner's insurance premium enough over a few years to close much of the gap, and it holds up noticeably better through repeated hail seasons than a standard shingle.
Nailing and sealing
Manufacturers publish both a four-nail standard pattern and a six-nail high-wind pattern. Every roof here is installed with six nails, placed on the marked nail line, driven flush and never overdriven, since an overdriven nail cuts into the mat and is one of the most common causes of a failed roof.
Shingles seal to the course below with a thermally activated adhesive strip that needs a few warm days to bond fully. A roof installed during a cooler stretch is hand-sealed at the rakes and eaves so an early wind event does not catch it before the sun does.
Hail resistance and Class 4 shingle
A Class 4 impact-rated shingle is built with a reinforced mat and a modified asphalt layer that resists cracking under a hail impact that would bruise or split a standard shingle. Many Texas insurers offer a premium discount for a documented Class 4 roof, which is worth asking about at the time of replacement rather than after the fact.
No shingle is hail-proof. Even a Class 4 roof can take cosmetic damage from a large enough hailstone, but the functional life of the roof is far better protected than with a standard product.
Color and the neighborhood
Weathered wood, driftwood and charcoal cover most of the shingle roofs across Richardson and Plano and suit the brick exteriors common in this part of Dallas. Lighter shades reflect more heat and can run a home's attic a few degrees cooler through a Texas July. Color samples are brought to the house so the decision is made against the actual brick and trim, not a screen.
Warranty, in plain terms
A limited lifetime shingle warranty covers manufacturing defects on a declining scale after roughly the first ten years. It does not cover installation errors, wind damage beyond the rated speed, or hail impact beyond what the shingle class is built for. Extended workmanship warranties are available when the full roofing system comes from one manufacturer, and the registration is filed once the job is complete.