The Seattle climate is brutal on roofs. Annual maintenance by Mass & Mass extends your roof's life by 5 to 10 years, prevents costly emergency repairs, and keeps your warranty intact. Plans start at just $299 per year.
A roof in Phoenix or Denver might last its full rated lifespan with minimal attention. A roof in Seattle will not. The Pacific Northwest climate creates a perfect storm of conditions that accelerate roof deterioration: 37 inches of annual rainfall, 152 rainy days, persistent cloud cover that keeps surfaces damp for weeks at a time, falling leaves and needles from the dense tree canopy, and the relentless growth of moss, algae, and lichen that thrives in our cool, moist air.
Without regular maintenance, a 30-year rated asphalt roof in Seattle often fails in 20 to 22 years. Moss roots penetrate between shingle layers and lift them, allowing water infiltration. Clogged gutters cause water to back up under the eaves, rotting fascia boards and decking. Small flashing issues around vents and chimneys become major leaks during heavy rain events. Each of these problems starts small and is inexpensive to fix, but when ignored for years, they compound into damage that requires full roof replacement.
At Mass & Mass LLC, we created our annual roof maintenance plans specifically for the challenges Seattle-area homeowners face. Our plans include everything your roof needs to stay healthy year after year. Call (425) 435-5800 to get started.
We inspect your roof twice per year: once in spring after the heavy rain season and once in fall before it begins again. Each inspection covers every critical area: shingles (checking for cracking, curling, missing tabs, and granule loss), flashing (around chimneys, vents, skylights, and wall junctions), valleys, ridge caps, drip edges, pipe boots, and the condition of your attic ventilation. We document everything with photos and provide a written condition report after each visit so you always know exactly how your roof is performing.
Moss is the single biggest threat to asphalt roofs in the Pacific Northwest. It grows on virtually every north-facing roof surface in the Seattle area, and once established, it holds moisture against the shingles, lifts the edges, and accelerates granule loss. Our maintenance plan includes professional moss treatment at every visit. We apply zinc-based treatments that kill existing moss and inhibit regrowth without damaging your shingles or harming the surrounding landscape. Consistent treatment prevents moss from ever gaining a foothold on your roof.
Clogged gutters are the second most common cause of premature roof failure in the Seattle area. When gutters fill with leaves, needles, and debris, water backs up under the roof edge, soaking the fascia, soffit, and roof decking. During freeze events, clogged gutters can form ice dams that push water under shingles. Our maintenance visits include thorough cleaning of all gutters and downspouts, along with an inspection of gutter condition, hangers, and slope to ensure proper drainage. For homes in heavily wooded areas of Redmond, Sammamish, and Kirkland, this service alone is worth the cost of the entire plan.
Our Premium maintenance plan includes minor repairs up to $500 in labor and materials at no additional charge. This covers common issues we find during inspections: replacing cracked or missing shingles, re-sealing pipe boots and flashing, reattaching loose drip edges, and patching small areas of damaged underlayment. By handling these small repairs immediately, we prevent them from growing into expensive problems that require a full roof repair or emergency service call.
We time our maintenance visits strategically to match the Seattle climate cycle. The spring visit (March through April) comes after the wettest months of the year. This is when we assess any damage caused by winter storms, heavy rain, and wind. We treat moss that grew during the dark, wet winter and clear any winter debris from gutters. The fall visit (September through October) prepares your roof for the coming wet season. We clean gutters of fallen leaves, check for any summer heat damage, and ensure all flashing and seals are tight before the November rains begin.
The math is straightforward. A typical asphalt roof in the Seattle area costs $12,000 to $25,000 to replace, depending on the size of your home and the shingle quality. Without maintenance, you can expect to replace that roof in 20 to 22 years. With annual maintenance, the same roof will last 27 to 30 years, which is the full manufacturer-rated lifespan.
Over a 10-year maintenance plan at $299 to $499 per year, your total maintenance investment is $2,990 to $4,990. The value of those extra 5 to 10 years of roof life? $6,000 to $12,500, based on the prorated cost of replacement. That is a return of 2x to 4x on your maintenance investment, not counting the avoided cost of emergency repairs, water damage, and the stress of dealing with a failing roof.
Consider two identical homes in Bellevue, both with new roofs installed in the same year:
The maintained home spends less money and has a newer roof at the end of 30 years. The advantage compounds further over the life of ownership.
After each fall visit, we provide a comprehensive annual roof condition report. This document summarizes findings from both visits, tracks changes year-over-year, includes all photos, and provides recommendations for any work beyond the scope of routine maintenance. This report is valuable documentation if you ever need to file an insurance claim or if you are selling your home and want to demonstrate diligent roof care to buyers.
Protect your roof investment with a plan designed for the Pacific Northwest climate. Call Mass & Mass at (425) 435-5800 to schedule your initial assessment and start your maintenance plan today.
We perform a thorough baseline inspection of your roof, documenting its current condition, identifying existing issues, and establishing a maintenance priority plan.
Based on your roof type, age, tree coverage, and condition, we recommend the right maintenance plan. We schedule your first two service visits.
After winter, we inspect for storm damage, treat moss, clean gutters, and address any issues from the wet season. You receive a detailed service report.
Before the rainy season, we clear fall debris from gutters, check all seals and flashing, treat any new moss growth, and ensure your roof is winter-ready.
After your fall visit, we deliver a comprehensive annual condition report with year-over-year comparison, all photos, and recommendations for the year ahead.
Stop guessing about your roof's condition. Our annual maintenance plans give you peace of mind and save you thousands over the life of your home.