Local conditions
What San Antonio does to a roof.
Hail. Bexar County sits in the same hail-prone belt as the rest of this region, and significant hail events here regularly produce claims across whole neighbourhoods at once. That is also what draws out-of-state storm crews into the city in numbers.
Heat and UV. Long, intense summers cook asphalt shingles from above while an under-ventilated attic cooks them from below. Ventilation is not an upsell in this climate — inadequate ventilation voids most manufacturer warranties outright.
A very wide range of housing stock. San Antonio spans everything from pre-war homes with plank decking and multiple roof layers to subdivisions finished in the last few years. Those need genuinely different scopes, and a quote given without knowing which one you have is a guess.
Foundation movement. Expansive clay soils are common here, and structures that have shifted put stress on roof planes, flashing joints, and chimney details. Sometimes a persistent leak is a movement problem rather than a roofing one, and we will say so.