Why Different Roof Materials Need Different Maintenance

Roofing materials do not all wear out in the same way. Composite shingles may lose granules or develop lifted edges, cedar shakes can split or retain moisture and metal roofing may develop issues around fasteners, seams or protective coatings.
Other roof components can also age faster than the primary roofing material. Flashing around chimneys, skylights, walls and vents may loosen, corrode or fail even when the surrounding roof still has years of useful life remaining.
The type of roof you have affects what homeowners and roofers should watch for, including:
- Missing, damaged or lifted shingles
- Split, curled or deteriorated cedar shakes
- Loose seams, fasteners or panels on metal roofs
- Worn or damaged flashing around roof penetrations
- Moss, leaves and debris that interfere with drainage
- Sealants or exposed components that have begun to deteriorate
While some roofing materials do benefit from periodic upkeep, others need little attention unless flashing, fasteners or other vulnerable components begin to fail.
Composition Shingles: Watch for Wear and Weather Damage
Maintenance for composition shingles often focuses on identifying gradual wear caused by weather and aging and performing targeted repairs when problems arise.
Common issues include:
- Missing or lifted shingles after windstorms
- Curling shingles from prolonged sun exposure
- Granule loss that exposes the underlying asphalt
- Damaged flashing around chimneys, skylights and roof penetrations
- Debris buildup in roof valleys that can trap moisture
For most homeowners, composition shingle maintenance is largely reactive. Promptly repairing damage after storms or addressing problems as they develop can help prevent more extensive repairs. In the Seattle area, where many homes are surrounded by trees, it's also a good idea to remove built-up leaves, pine needles and other debris before they trap moisture against the roof.
Metal Roofs: Focus on Fasteners, Seams and Protective Coatings
Regular maintenance should include checking for:
- Loose or backed-out fasteners
- Worn sealant around penetrations
- Separation at panel seams
- Minor dents caused by falling branches or hail
- Areas where protective paint or coatings have become scratched or worn
Although metal roofs resist rot and insect damage, exposed steel components can become vulnerable to corrosion if protective coatings are compromised.
It's also important to remove branches or debris that may trap moisture against the roof surface for extended periods.
Cedar Roofs: Natural Beauty Requires Extra Care
Cedar shake and cedar shingle roofs offer a distinctive appearance that many homeowners appreciate. Because cedar is a natural wood product, however, it requires more specialized maintenance than many synthetic materials.
Maintenance typically includes monitoring for:
- Moss or algae growth
- Fungal decay
- Splitting or cracked shakes
- Loose or damaged individual shakes
- Excessive moisture retention caused by overhanging tree branches
- Debris accumulation that prevents the roof from drying properly
Proper airflow and sunlight help cedar roofs dry after rainfall. Trees growing too close to the roof can increase shade and moisture, creating ideal conditions for moss growth and wood deterioration.
Seasonal Maintenance Benefits Every Roof
Even roofing materials that do not require protective coatings or other specialized treatments can benefit from occasional cleaning and maintenance. It is also a good idea to have the roof professionally inspected after a major storm or when several years have passed since anyone has taken a close look at it.
Regular maintenance tasks that can help extend the life of your roof include:
- Removing leaves, branches and other debris
- Cleaning gutters and downspouts
- Looking for signs of animal activity
- Checking flashing around chimneys, skylights and other roof penetrations
Schedule Roof Maintenance or Cleaning in Seattle
Our roofers at Chet’s Roofing & Construction have extensive experience inspecting and repairing composition shingles, metal roofing and cedar shakes throughout the greater Puget Sound area.
Contact us at (877) 611-1514 to schedule service.



