Roofing Repairs, Replacement, and Maintenance
What this domain tests
This domain tests diagnosis and decision-making: whether to repair or replace, how to find the true source of a leak, and how to document and maintain a roof over time. The exam favors systematic inspection over guesswork.
Core rules and concepts
- Leaks rarely originate directly above a ceiling stain. Trace water uphill and sideways to flashing, penetrations, valleys, or failed sealant.
- Inspect the deck for soft spots, delamination, and rot. New covering over a deteriorated deck will fail and may void the warranty.
- Flashing failures are common at chimneys, skylights, sidewalls, and vent boots. Replacing a boot or step flashing is often a better repair than coating it.
- Partial replacement requires matching profile, exposure, and color as closely as possible; discontinued shingles may make a full-slope replacement the honest option.
- Maintain drainage: clear gutters, remove debris, and keep vegetation off the roof.
- Document conditions with photos, measurements, and a written scope before and after work.
Worked example
A homeowner reports a ceiling stain near a chimney. The roofer inspects uphill and finds failed step flashing and a lifted counterflashing, not a shingle defect. The repair scope includes new step flashing woven into the courses, new counterflashing, and replacement of damaged shingles. The roofer also checks the deck, because prolonged leakage may have rotted sheathing. The written report distinguishes the flashing repair from unrelated wear elsewhere on the roof.
Traps that cost marks
Sealing over a wet deck; coating a failed flashing instead of replacing it; assuming the stain is directly below the leak; promising a color match without checking availability; and failing to document pre-existing damage.
Key points
- Trace leaks uphill and sideways.
- Deck condition governs repairability.
- Flashing repairs beat sealant coatings.
- Partial replacements need matching materials.
- Written documentation protects both parties.