45+ Years of Composition Roof Craftsmanship Across North King & South Snohomish Counties
Composition Shingle Roofing Snohomish County: Built for the PNW, Not the Shortcuts
In the Pacific Northwest, your roof is the single most important barrier protecting your home from persistent moisture and seasonal storms. At Addicott Roofing, we specialize in installing high-performance composition shingle roofing Snohomish County homeowners have relied on for more than 45 years.
While we are widely known for our dominant reputation in Edmonds, our certified teams deliver this same level of premium residential roofing craftsmanship to properties throughout North King County and South Snohomish County.
A great composition roof is more than just a layer of shingles; it’s a highly engineered system. While many contractors prioritize speed to maximize their margins, we focus entirely on precision. We believe that a roof is only as good as the care put into its installation, and our process is designed to ensure your investment stands strong for decades.
The difference between a composition roof that fails after 15 years and one that easily cruises past 30 comes down to installation engineering. We focus our installation methods around these core structural principles.
A composition shingle is designed to shed water from the outside, but it can easily be destroyed from the inside out.
If your attic traps hot air and moisture, it literally bakes the shingles from underneath, causing premature blistering, curling, and wood rot.
We mathematically calculate and install a balanced intake (soffit) and exhaust (ridge) ventilation system to regulate your attic’s temperature, protect the structural integrity of the shingles, and keep your CertainTeed lifetime warranty fully intact.
Many contractors use cheap, organic 15lb felt as a secondary barrier.
In our damp climate, standard felt absorbs moisture and wrinkles during installation, which telegraphs through and makes your brand-new shingles look wavy.
We use premium, tear-resistant synthetic underlayment that lays completely flat and acts as a high-performance second skin.
Additionally, we install self-adhering, rubberized “Ice & Water” shields in all valleys and high-risk leak zones that seal tightly around every nail shank that penetrates them, ensuring water can never seep behind your shingles.
We explicitly nail all of our shingles rather than using rapid pneumatic staplers.
Staples are highly prone to crooked alignment or blowing entirely through the shingle backing.
Hand-nailing or precise gun-nailing ensures the fastener penetrates the exact common bond line at the perfect depth and angle, giving your roof maximum wind resistance.
To guarantee our standards are met on every project, we place at least oneand often two—dedicated foremen on every job site from the initial tear-off to final quality control.
We are certified installers of the CertainTeed Landmark Series architectural shingle. These heavy-duty shingles offer the beautiful, deep-shadowed aesthetic of natural wood shake, but with the fire and wind resistance of modern fiberglass composition.
Here’s how it compares to standard 3-tab options on the market:
| Feature | CertainTeed Landmark Shingles | Standard 3-Tab Shingles |
| Design | Heavyweight dual-layer architectural | Thin single-layer flat profile |
| Aesthetics | Deep shadow lines mimicking wood shake | Flat, uniform appearance |
| Wind Resistance | Certified up to 110 – 130 mph | Rated up to 60 mph |
| Warranty | Lifetime residential warranty | 20 – 25 year limited warranty |
We strip your old roof down to the bare wood and make a conscientious, manual effort to pull out all old nails rather than just pounding them flat, ensuring a perfectly smooth, flat deck.
We inspect the plywood thoroughly. Any rotten, soft, or delaminated wood sheeting is immediately removed and replaced with fresh, high-quality exterior wood.
Once the deck is in its best possible condition, we apply premium felt paper and modern synthetic underlayment to create a secondary water barrier across the entire roof.
Transitions are where 90% of roof leaks occur. We install premium, black baked enamel flashing for all valleys, chimneys, skylights, and roof-to-wall intersections to ensure water is directed away from your home.
A high-quality architectural composition roof from the CertainTeed Landmark Series can easily last between 25 to 30 years or more when properly installed and paired with effective attic ventilation.
Nails provide significantly higher holding power and wind uplift resistance. Staples are prone to tearing the shingle backing or sitting crookedly, which drastically reduces the wind rating and voids the manufacturer’s warranty.
Piecework pay rewards speed, which often leads to skipped nails, misalignments, and missed deck rot. Hourly pay incentivizes our craftsmen to prioritize accuracy, thoroughness, and exceptional build quality over sheer speed.
We strongly recommend against overlays. Installing new shingles over an old roof hides underlying dry rot, adds excessive structural weight, reduces wind resistance, and can shorten the overall lifespan of your new investment.
If we find rotten or delaminated wood sheeting after removing your old shingles, our team will document the damage and replace the bad wood immediately. We make sure the roof deck is in its best possible structural condition before any new underlayment or shingles are applied.
For over 45 years, we’ve built our business on honest advice, transparent communication, and craftsmanship that speaks for itself.
Whether you need a full residential replacement or a targeted structural repair, our team is ready to deliver a composition roof built to protect your home for decades to come.
