A warning sign is a reason to investigate, not an automatic instruction to replace your roof. These ten checks help Seattle and Eastside homeowners describe a concern and choose the next step. Inspect from the ground and accessible indoor areas; leave roof access to a professional.
1 An Aging Roof with an Unclear History
Look for installation records, product information, warranties and previous repair invoices. Age helps with planning, but does not establish the condition of the deck, flashings or shingles. If the installation date is unknown, ask for a condition assessment rather than assuming a replacement deadline.
2 Curling, Cracking or Missing Shingles
From ground level, note where material appears damaged or absent, especially after a storm. Ask whether the issue is localized and repairable, how the surrounding shingles are performing and whether any underlying area was exposed. A few damaged shingles do not by themselves establish that the entire roof has failed.
3 New or Heavy Granule Accumulation
Photograph any unusual accumulation visible at downspout outlets, along with bald-looking shingle areas you can see safely. Give the inspector the roof's age and when you noticed the change. Do not diagnose the remaining life of the whole roof from gutter debris alone.
4 Unexpected Light or Moisture in the Attic
If an attic is safely accessible, note unexpected openings, staining or damp areas without stepping onto unsupported surfaces. Designed ventilation openings can admit light; not every visible light source is a hole in the roof. Ask an inspector to distinguish intended ventilation from damaged roofing or flashing.
5 A New Sag or Change in the Roofline
Treat a new or worsening sag as an urgent assessment issue. Do not walk on the roof or enter an area that appears unsafe. Describe when the change appeared and any recent impact or leak. The required work depends on the cause and may involve more than replacing the surface material.
6 Moss Growth or Dark Streaks
Moss and algae are different. The Asphalt Roofing Manufacturers Association explains that moss can lift shingle edges, while algae commonly causes discoloration. Appearance alone does not determine whether cleaning, repair or replacement is needed. Ask about shingle condition and manufacturer-approved care before arranging moss removal.
7 An Unexplained Change in Energy Use
Higher bills are not proof that the roof needs replacement. Ask about insulation, air leakage, ventilation and heating or cooling equipment as well as the roof. Record what changed and when; avoid selecting a new roofing material on the promise that it will solve an undiagnosed comfort problem.
8 Water Stains or an Active Leak
Photograph the location and note whether it changes during rain. A stain may reflect past moisture, and water can travel before it becomes visible indoors. Ask for the entry point to be investigated rather than assuming the roof area directly above the stain is the cause. For ongoing water entry, contact emergency roof repair.
9 Similar Homes Are Getting New Roofs
A neighbor's project can be a reminder to check your records, but it is not evidence of damage to your roof. Homes of the same age can have different materials, exposure, ventilation and maintenance histories. Base your decision on findings from your own property.
10 Branch Impact or Storm-Related Changes
Record fallen branches, displaced material or new leaks from a safe location. Some damage is difficult to see from the ground; CertainTeed notes this in its roofing and impact-resistance guidance. Arrange an assessment after a suspected impact and keep photographs for your records. Our roof insurance guide explains the questions to take to your insurer.
Choose the Next Step
- Active leak, impact or a changing roofline: seek prompt professional assessment and explain the immediate concern.
- Visible damage without an active leak: arrange a roof inspection and ask about a localized repair.
- Age, appearance or budget planning: gather records and ask for a condition report before committing to replacement.
Ask the inspector to show the affected locations, explain the extent of damage and distinguish work needed now from items to monitor. If replacement is proposed, request the reasons a repair would be insufficient and compare the scope using our roof replacement budgeting guide.