Trusted roofing and exterior contractor serving Bothell and the surrounding area since 2007. Free estimates, 10-year workmanship warranty, fully licensed and insured.
Bothell is a city of approximately 54,000 residents that occupies a unique geographic position straddling the King County-Snohomish County line in the northern reaches of the Seattle metropolitan area. The city stretches from the Sammamish River corridor near the historic Bothell Landing to the commercial centers along I-405 at Canyon Park, encompassing established residential neighborhoods built over five decades of suburban growth. Home to the University of Washington Bothell and Cascadia College campus, and connected to the regional trail system via the Burke-Gilman and Sammamish River trails, Bothell blends suburban convenience with access to the natural beauty that defines the Pacific Northwest.
K Single Corp has served Bothell homeowners since 2007, completing projects across both the King County and Snohomish County sides of the city. With over 15,000 total projects and our WA License #KSINGSC842B3, we bring consistent quality and deep local knowledge to a community where the roofing market is driven by a large inventory of 1970s-2000s homes reaching replacement age simultaneously.
Bothell’s roofing market is shaped by the city’s development history and its position within the broader Puget Sound watershed. Understanding these factors helps homeowners make informed decisions about materials, timing, and maintenance.
Two-County City. Bothell’s unique position straddling King and Snohomish Counties means some properties fall under different jurisdictional regulations. While the City of Bothell handles building permits for both sides, property tax assessments, county services, and some regulatory requirements can differ. K Single Corp navigates these distinctions for every Bothell project, ensuring compliance with all applicable requirements regardless of which county your property is in.
Sammamish River Corridor Moisture. The Sammamish River flows through the heart of Bothell, and the associated riparian corridors, wetlands, and creek systems create locally elevated moisture conditions. Properties near the river, North Creek, or other drainage corridors experience more persistent dampness, morning fog, and higher ambient humidity than properties on higher ground. This moisture differential directly affects moss growth rates and roofing material longevity.
Mature Tree Canopy. Bothell’s residential neighborhoods feature some of the most extensive mature tree coverage in north King County. Douglas fir trees that were established when the neighborhoods were first developed in the 1970s and 1980s have now grown to towering heights, casting extensive shade over homes and dropping massive quantities of needles, small branches, and cones onto roof surfaces. This debris creates a thick organic layer that retains moisture and provides an ideal growing medium for moss, lichen, and algae. Managing the tree-roof relationship is fundamental to roof longevity in Bothell.
Aging Housing Stock. Bothell experienced its most significant residential growth from the 1970s through the early 2000s. This means the city now has a large inventory of homes that are 25-50 years old, squarely in the window where roof replacement becomes necessary. Many 1970s and 1980s homes are on their second roof, and those second roofs installed in the late 1990s and early 2000s are themselves approaching end of life. Newer homes from the 2000s with original builder-grade three-tab shingles are also beginning to need replacement.
Local Knowledge Across Both Counties. We understand Bothell’s two-county reality and manage every project accordingly. Our familiarity with the City of Bothell Community Development Department means efficient permit processing, and our experience with projects on both sides of the county line means consistent quality regardless of jurisdiction.
Moss Expertise. We have fought more moss battles than we can count across Bothell’s tree-shaded neighborhoods. Our material recommendations, zinc strip installation, and maintenance guidance are informed by years of experience with what works and what does not in Bothell’s specific conditions. We recommend moss-resistant shingle formulations as baseline for every Bothell project, not as an optional upgrade.
Transparent, Honest Service. Bothell homeowners value contractors who communicate clearly and do what they say. We provide fully itemized estimates before any work begins, explain the rationale behind every recommendation, and follow through on our commitments. When we find unexpected issues during tear-off, deteriorated sheathing, inadequate ventilation, compromised flashings, we document them with photographs, explain the situation, and discuss options before proceeding. There are no surprise charges on a K Single Corp project.
Proven Track Record. With over 15,000 projects completed since 2007, K Single Corp has the documented experience and established reputation that gives Bothell homeowners confidence. Our 10-year workmanship warranty, WA License #KSINGSC842B3, and consistent online reviews demonstrate our commitment to quality and accountability.
Architectural Composition Shingles. For the majority of Bothell homes, we recommend Malarkey architectural shingles with polymer-modified asphalt. The polymer modification provides two critical advantages in Bothell’s climate: enhanced flexibility in cold temperatures that prevents cracking during freeze events, and superior moss and algae resistance that extends roof life in the city’s damp, shaded environment. We install the complete Malarkey lineup including Vista AR for value-focused projects and Legacy for premium aesthetics and performance.
Standing Seam Metal Roofing. Metal roofing is gaining significant traction in Bothell as homeowners recognize its advantages in the Pacific Northwest climate. Metal completely eliminates moss growth, sheds debris naturally with rainfall, handles wind loads better than composition products, and provides a 40-60 year lifespan that can make it the last roof a home ever needs. We install standing seam metal in a range of contemporary colors that complement Bothell’s residential architecture, from classic charcoal to modern weathered copper and slate.
Ventilation and Underlayment. Beneath the visible roofing material, proper ventilation and underlayment are critical for Bothell homes. Many 1970s and 1980s homes were built with minimal attic ventilation, and improving airflow with balanced soffit intake and ridge exhaust ventilation during a re-roofing project is one of the most impactful upgrades we can make. We install synthetic underlayment with superior moisture barrier properties and use ice and water shield membrane in valleys and at eaves for comprehensive weather protection.
Our process begins with a thorough free inspection where we climb the roof, assess conditions firsthand, and document everything with photographs. We check shingle condition, flashing integrity, ventilation adequacy, gutter function, and visible signs of deck deterioration. We then provide a detailed written estimate with full itemization and walk through the options in person.
Once approved, we handle all City of Bothell permitting, schedule the work, and complete the installation with our own trained crews. After installation, we conduct comprehensive cleanup including magnetic nail sweeps across the entire property and all adjacent areas. We schedule the required city final inspection and ensure the project passes before closing it out.
Bothell homeowners can reach K Single Corp at (206) 659-4349 for a free roof inspection and detailed estimate. Whether your home is on the King County or Snohomish County side, near Canyon Park or Bothell Landing, in need of a simple shingle replacement or a comprehensive roofing system modernization, we deliver consistent quality and honest service on every project. Our Burien headquarters puts us approximately 30 minutes from most Bothell neighborhoods, and our crews serve north King County and south Snohomish County daily.
Our experienced crews bring meticulous attention to detail to every Bothell project. From proper underlayment and flashing to clean nail lines and ridge caps, we follow manufacturer specs to the letter so your warranty stays intact.
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Local expertise across Bothell's diverse communities.
Commercial and residential hub in north Bothell along the I-405 corridor, featuring a mix of retail centers, office parks, and residential neighborhoods with homes built from the 1980s through 2000s. Canyon Park's commercial properties require flat-roof systems including TPO and PVC, while the surrounding residential homes are predominantly composition shingle. Many 1980s and 1990s homes in Canyon Park are reaching roof replacement age as original materials approach the 30-year mark.
Residential community in western Bothell developed primarily in the 1980s and 1990s around the North Creek corridor. The neighborhood's namesake creek and associated wetlands create locally elevated moisture levels that contribute to persistent dampness during the wet season. Many North Creek homes feature original builder-grade roofing that is now 30-35 years old and showing clear signs of age. granule loss, curling edges, and moss growth are common findings during our inspections in this area.
Charming neighborhood surrounding the Country Village shopping area in central Bothell, with residential homes from the 1960s through 1980s on established, tree-lined streets. The area's mature Douglas fir and western red cedar canopy creates significant shade and constant needle debris accumulation on roofs. Moss growth is particularly aggressive here, and we frequently recommend moss-resistant shingle formulations and zinc strip installation for Country Village properties.
Historic heart of Bothell along the Sammamish River near the intersection of Bothell Way and Main Street. Older homes in this area date from the early 1900s through the 1960s, with some featuring architecturally distinctive rooflines that require experienced crews. The Sammamish River's proximity creates higher humidity and morning fog conditions that keep roof surfaces damp for extended periods during fall and winter. Bothell Landing properties often reveal hidden deck deterioration and outdated flashing methods during tear-off.
Residential area in south Bothell near the Brickyard Road corridor, featuring homes from the 1970s through 1990s on rolling terrain between the Sammamish River and Kenmore. Brickyard's moderate topography provides decent drainage but limited wind protection, and the neighborhood's mature trees create typical Pacific Northwest moss and debris conditions. Homes here are solidly in the replacement cycle, with many original and second-generation roofs reaching end of life.
Established residential neighborhood in eastern Bothell with homes built primarily in the 1970s and 1980s, many on larger lots with significant tree coverage. Queensborough's housing stock is reaching the age where most roofs need replacement, and many homeowners are taking the opportunity to upgrade from basic three-tab shingles to architectural-grade products that offer better performance, aesthetics, and longevity in Bothell's damp climate.
Bothell straddles the King County-Snohomish County line, and the permit process depends on which county your property falls in. Properties on the King County side of Bothell obtain permits through the City of Bothell Community Development Department at Bothell City Hall, 18415 101st Avenue NE. Properties on the Snohomish County side follow the same city permitting process through the same office. Residential re-roofing permits typically cost $200-$400 and are processed within 1-5 business days for standard projects. Bothell enforces a two-layer maximum for roofing materials. A final inspection is required after installation. K Single Corp determines which county jurisdiction applies during our initial property assessment and handles the entire permit process regardless of which side of the county line your home sits on.
Bothell receives approximately 38 inches of rain annually, positioning it between the drier Eastside communities and the wetter foothill areas to the east. The city's location at the northern end of Lake Washington's watershed creates a climate characterized by consistent moisture, morning fog along the Sammamish River corridor, and mild winter temperatures that typically range from the low 30s to mid-40s. Bothell's position at the convergence of several drainage corridors, the Sammamish River, North Creek, and other streams, means locally higher humidity in valley-floor neighborhoods. Wind exposure is moderate, with some protection provided by the surrounding terrain, though hilltop properties in eastern Bothell experience stronger gusts during winter storms. Moss growth is aggressive throughout Bothell, driven by the combination of consistent rainfall, moderate temperatures, and extensive mature tree canopy that includes Douglas fir, western red cedar, bigleaf maple, and red alder. The autumn leaf and needle drop season creates heavy debris accumulation on roofs that must be managed to prevent moisture trapping and accelerated deterioration.
Every Bothell project starts with a comprehensive roof inspection. We document existing conditions, identify problem areas, and provide a detailed estimate so you know exactly what to expect before any work begins.
From first call to final walkthrough. Here's how we work.
We inspect your roof, discuss your needs, and provide a detailed, no-obligation estimate, typically within 48 hours.
You receive a clear, itemized quote with material options, timeline, and warranty details. No hidden costs.
Our experienced crew handles your project with care: quality materials, clean worksite, and daily progress updates.
We walk the completed project with you, ensure everything meets our standards, and activate your 10-year workmanship warranty.
Real work on real homes across the Puget Sound.
A residential roof replacement in Bothell typically costs $9,000-$24,000 depending on home size, material selection, and roof complexity. Bothell's housing stock is predominantly mid-size homes from the 1970s through 2000s, which keeps most projects in a moderate cost range. Composition architectural shingles run $4.50-$7.50 per square foot installed, and standing seam metal runs $9-$14 per square foot. We provide free, fully itemized estimates that detail every component of the project.
Bothell does span both King County and Snohomish County, but the permitting process is handled through the City of Bothell Community Development Department regardless of which county your property falls in. K Single Corp determines the applicable jurisdiction during our initial assessment and handles all permitting requirements. The process is the same from the homeowner's perspective regardless of county. Permits typically cost $200-$400 and are processed within 1-5 business days.
For most Bothell homes, we recommend Malarkey architectural shingles with polymer-modified asphalt for their superior moss resistance and cold-weather flexibility. Bothell's damp, tree-shaded environment makes moss resistance a critical factor in material selection. For homeowners seeking maximum longevity and zero moss maintenance, standing seam metal roofing is an excellent choice that eliminates the need for ongoing moss treatment. We bring physical samples to your home so you can see materials in natural Bothell light.
Moss growth in Bothell is among the most aggressive in the Eastside due to the combination of consistent rainfall, mild temperatures, and extensive tree canopy. North-facing roof slopes and heavily shaded areas can develop significant moss within just three to five years of installation. We combat this with moss-resistant shingle formulations, zinc strip installation at ridgelines, and homeowner education about ongoing maintenance. Left untreated, moss can shorten a Bothell roof's lifespan by five to ten years.
Yes, we serve the neighborhoods surrounding the University of Washington Bothell campus, including the homes and rental properties along Beardslee Boulevard, the residential areas near the campus, and the developing neighborhoods in the Bothell Landing vicinity. Whether you own a rental property near campus or a family home in the surrounding neighborhoods, we provide the same quality workmanship and transparent service.
Most residential roof replacements in Bothell take 2-3 days depending on roof size and complexity. Simpler single-story homes with straightforward roof planes can often be completed in 1-2 days, while larger homes with multiple roof planes, dormers, or skylights may take 3-4 days. We monitor weather forecasts closely and schedule work during dry windows during the wet season. Our crews secure the roof each evening if the project extends over multiple days.
Absolutely. The Bothell Landing area contains some of Bothell's oldest homes, dating back to the early 1900s and through the mid-century period. These homes often present unique roofing challenges including complex steep-pitched rooflines, skip sheathing, outdated flashing methods, and deck deterioration from decades of Pacific Northwest moisture exposure. Our crews have extensive experience with older construction methods and know how to modernize these roofing systems while respecting the character of the original architecture.
Every K Single Corp project in Bothell includes our 10-year workmanship warranty covering installation defects, flashing failures, and leaks resulting from our labor. This warranty is in addition to manufacturer material warranties of 25 years to lifetime depending on product selection. Our warranty is backed by our continuous presence in the Puget Sound market since 2007 and our WA License #KSINGSC842B3, providing Bothell homeowners with confidence that we will be here to honor our commitment.
Yes, we provide same-day emergency response throughout Bothell for active leaks, storm damage, and fallen-tree impacts. Bothell's extensive tree canopy makes it particularly susceptible to tree-related roof damage during winter windstorms. Our emergency services include tarping to stop active water intrusion, debris removal, damage documentation for insurance claims, and coordination of permanent repairs. Call (206) 659-4349 for immediate emergency service.
The ideal roofing season in Bothell is May through October when rainfall is minimal and temperatures allow proper shingle adhesion. However, we install roofs year-round in Bothell using dry weather windows during the wet months. Scheduling your estimate in early spring ensures you can secure a summer installation slot before the busy season fills up across the North King County and South Snohomish County area.
K Single Corp provides roofing and exterior services throughout Bothell and surrounding areas.
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