A-03.B1 · Shingle Roofing
Shingle roofs,
installed
properly.
The most common roof in America, and the one most often installed badly, because it is forgiving enough to hide poor workmanship for about a decade.
Why shingle,
and when not
Architectural asphalt shingle is the sensible default for most pitched residential roofs: reasonable cost, wide choice of profile and colour, straightforward repair, and a service life that is well understood.
It is not always right. Very low pitch roofs need a different system entirely. Structures already framed for tile may be better served staying with tile. And in full Inland Empire sun, the underlayment and ventilation specification matters more than the shingle brand on the box.
Where shingle roofs fail early it is almost never the shingle. It is flashing at valleys, walls and penetrations, and it is an attic that cannot breathe.
What a proper
shingle install
includes
The parts you cannot see once it is finished are the parts that decide how long it lasts.
- 01
Full tear-off
Down to the deck. Layering new shingles over old is permitted in some circumstances and is almost always a false economy — it hides deck condition, adds load, and shortens the life of the new covering by trapping heat.
- 02
Deck repair
Rot, delamination and failed fastening found and documented once the deck is exposed, priced as a written change order before replacement goes in.
- 03
Underlayment
Specified for heat and UV exposure rather than to the cheapest product that satisfies the minimum. In this climate underlayment is doing more work than most homeowners realise.
- 04
Flashing and detailing
Valleys, wall intersections, chimneys, vents and pipe penetrations. This is where roofs leak and where corners get cut, because none of it is visible from the ground when finished.
- 05
Ventilation
Intake and exhaust balanced so the attic can move air. An unventilated attic cooks the roof from underneath and voids most manufacturer warranties.
Common questions
A-03.B1.4 · Free, no obligation
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