Woodinville, WA Roof Replacement

57-Square Landmark PRO Install with New Gutters & Ventilation Upgrade

This week we wrapped up a full roof replacement in Woodinville, Washington — and this one was a big one.

The homeowner knew it was time. The roof had reached the end of its lifespan, and with low-slope sections and heavy seasonal rain in the Pacific Northwest, patchwork repairs weren’t going to cut it anymore.

When we performed our full roofing inspection, it became clear: this home needed a complete system upgrade — not just new shingles.

The Home & Roof Details

📍 Location: Woodinville, WA

📐 Roof Size: 57.1 squares

🏗 Existing Roof: 1 layer of aging asphalt shingles

🌧 Key Concern: Low-slope areas requiring enhanced waterproofing

🌀 Ventilation: Upgrade to full ridge vent system

🏠 Additional Scope: Full gutter and downspout replacement

At over 57 squares, this was a substantial roof system — and in Woodinville’s climate, waterproofing and ventilation are everything.

What We Found During the Inspection

Once we got up on the roof and evaluated the structure, here’s what stood out:

• Aging shingles near the end of their service life
• Low-slope areas that required extended ice & water protection
• Sections of roof decking that had compromised structural integrity
• Gutter system ready for replacement
  

In the Pacific Northwest, low-slope areas are especially vulnerable. If ice & water shield isn’t applied correctly, water intrusion becomes a real risk.

We made sure this one would be built right.

The Solution: Full Roofing System Installation

Step 1: Complete Tear-Off

We removed the existing shingles and underlayment down to the decking.

No shortcuts. No layering over problems.

Step 2: Decking Replacement

We replaced 10 sheets of 7/16" OSB decking where structural integrity was compromised.

On exposed eaves, we installed 1/2" CDX plywood per homeowner request.

Solid decking = long-term performance.

Step 3: Advanced Waterproofing

Because of the roof design and slope areas, we installed:

• CertainTeed Ice & Water Shield on the first 3 feet of eaves
• Ice & water protection in all valleys
• Extended application on all low-slope sections
• Synthetic underlayment across the remaining roof surface
  

In Woodinville’s rainy climate, this extra protection matters.

Step 4: CertainTeed Landmark PRO Installation

We installed CertainTeed Landmark PRO shingles in Moire Black.

Why Landmark PRO?

• Architectural thickness
• Algae resistance
• High wind rating
• Proven long-term durability
• Backed by manufacturer warranty
  

We installed:

• CertainTeed starter shingles along eaves and rakes
• CertainTeed hip and ridge caps
• Electro-galvanized roofing nails
• 26-gauge pre-painted steel drip edge
• 26-gauge W-valley metal (open valley system)
• New galvanized plumbing vent boots
  

Every component installed per manufacturer specifications.

Step 5: Ventilation Upgrade

This home received a full CertainTeed filtered ridge vent system to allow proper airflow across the roof deck.

Ventilation is critical.

Without it, heat and moisture get trapped in the attic — shortening roof lifespan and increasing risk of mold and decking failure.

This system now meets modern ventilation standards.

New Gutters & Downspouts Installed

Since we were already replacing the roofing system, we installed:

• 5" K-style seamless aluminum gutters
• Heavy-duty hidden hangers spaced every 2 feet
• 2"x3" aluminum downspouts
• Preformed outlets (no cut-and-fold shortcuts)
• Proper slope for optimal drainage
  

Color selected: White (low gloss finish)

All gutter workmanship includes:

• 10-Year Squatch Roofing Workmanship Warranty
• 20-Year Manufacturer Material Warranty
  

A roof is only as good as its drainage system.

Timeline & Installation

🗓 Project Completed: December

⏱ Duration: Multi-day install

🧹 Clean-Up: Full debris removal and magnetic sweep

Our production team paid special attention to low-slope waterproofing details — exactly the kind of detail that prevents callbacks and earns 5-star reviews.

The Final Result

This Woodinville home now has:

• A fully waterproofed roofing system
• Proper ventilation
• Reinforced decking
• New seamless gutters
• High-performance architectural shingles
  

More importantly — the homeowner now has peace of mind heading into another Washington winter.

No worrying about ponding water.

No worrying about failing decking.

No worrying about hidden leaks.

Just a roofing system built to last.

If You’re in Woodinville and Noticing…

• Roof over 20 years old
• Low-slope sections on your home
• Granule loss or curling shingles
• Sagging decking
• Failing gutters
• Moss or moisture buildup
  

It may be time for a professional roof inspection.

Roof Replacement in Woodinville, WA

Squatch Roofing specializes in:

• Full roof replacement
• Low-slope waterproofing solutions
• Decking repair and replacement
• Ventilation upgrades
• Gutter system installation
  

We offer free, no-obligation roof inspections in Woodinville and surrounding areas.

Our goal isn’t to sell you something you don’t need.

It’s to inspect your roof, identify real issues, and provide clear solutions.

Frequently Asked Questions

If you’re in Woodinville and want your roof built right — not just replaced — Squatch Roofing is ready to help.

Because roofing problems should be a myth.

Schedule Your Free, In-Person Roof Inspection