Hillsboro’s Dependable Deck Installer — Owner on Every Job, Properly Flashed & Built Tough
The structural rot VResh finds most often on Hillsboro homes is not at the deck surface — it is at the ledger board, where an improperly flashed deck attachment has been directing Tualatin Valley rain straight into the rim joist and floor framing of the house for 25+ years.
This damage is invisible from the exterior until it is significant and expensive. VResh builds every deck with a properly flashed ledger connection — a through-wall flashing assembly that prevents water from reaching the framing — and when we remove an old improperly flashed ledger, we repair the rot we find before the new ledger goes on. Licensed OR #241979. Free written estimates. (503) 272–6436.
VResh is owner-operated. Vlad personally oversees every Hillsboro deck project. Every deck gets a permit — no exceptions.
Why Hillsboro Decks Need Attention Now
Hillsboro's 1990s and early 2000s residential boom produced a large number of homes with attached decks built to the construction standards of that era — which frequently omitted through-wall ledger flashing. Those decks are now 25–35 years old and entering their natural failure cycle.
The Hillsboro 1990s Deck Ledger Problem
Deck ledger flashing requirements in Washington County residential construction were not consistently detailed or inspected through much of the 1990s. Many Hillsboro decks from this era have ledger boards lag-bolted through the siding directly to the rim joist without any through-wall flashing assembly. Water enters at every fastener location, saturates the rim joist behind the ledger, and spreads into the sill plate and floor framing adjacent to it. After 25–35 years of Tualatin Valley rain at these unflashed connections, the structural damage is typically significant. VResh has removed Hillsboro ledgers to find rim joist replacement needs that dwarfed the cost of the deck itself.
Composite Decking from the 1990s-2000s — End of Life
Many Hillsboro tract homes built in the 1990s and 2000s received composite decking at construction or during early renovation — the first-generation composite products that predated the modern capped composite standard. These early composites were not capped on all four sides and developed significant fading, staining, and moisture absorption over time. First-generation composite is now at or past its practical lifespan, and its replacement presents the opportunity to install a properly flashed ledger connection that likely did not exist at original installation.
Repair vs. Replace — The Honest Assessment
Not every Hillsboro deck situation calls for full replacement. Weathered surface boards with solid structural framing is a board replacement — not a full rebuild. A compromised ledger or rotted posts is a structural issue requiring more significant work. A deck that was undersized or poorly configured from the start is an opportunity to build what the homeowner actually needs. VResh assesses and advises honestly at the free estimate visit.
What VResh Actually Does on a Hillsboro Deck Project
A deck built correctly starts with a properly flashed ledger and ends with a permit inspection. Here is what that looks like on a Hillsboro home.
Site Assessment and Ledger Evaluation
Assess the existing ledger condition, rim joist, and adjacent siding at the attachment point. If the existing ledger is being removed, inspect the rim joist, sill plate, and surrounding framing for moisture damage before specifying the new ledger and structural scope.
What VResh Finds When Removing Hillsboro Deck Ledgers
- Rim joist rot — the most common finding. After 25+ years of water entry at unflashed fastener locations, the rim joist has been saturated repeatedly. Severity ranges from surface softness to complete structural compromise requiring full replacement.
- Absence of any flashing — the ledger is lag-bolted through the siding directly to the rim joist without any flashing assembly. This is the most common finding on Hillsboro decks built before 2005.
- Siding damage adjacent to the ledger — LP siding or vinyl at and below the ledger attachment showing swelling, cracking, or damage from water backup at the ledger-to-siding interface.
- ACQ hardware incompatibility — pressure-treated lumber from the 1990s used CCA treatment; current replacement lumber uses ACQ, which requires hot-dip galvanized, stainless, or specifically ACQ-rated hardware. Standard zinc-coated hardware corrodes rapidly in contact with ACQ.
Ledger Installation with Through-Wall Flashing
Install the ledger with proper through-wall flashing — metal flashing that extends up behind the siding above the ledger and down over the ledger face, directing water to the exterior. Standoffs or flashing washers at each fastener. Structural bolts through the rim joist per the deck structural design.
What Most Hillsboro Deck Installers Skip at the Ledger Connection
- Through-wall flashing assembly: metal flashing extending up behind the siding above the ledger and down over its face. Peel-and-stick tape applied to the ledger face does not constitute through-wall flashing.
- Fastener standoffs or flashing washers: each fastener through a flat ledger surface creates a water collection point. Standoffs create drainage space; flashing washers seal the penetration.
- Integration with the WRB: the flashing must be lapped into the weather-resistive barrier behind the siding so water drains outward and is not trapped between the flashing and the sheathing.
Permit, Footing, and Framing
Pull permit — VResh does not build attached decks without permits. Concrete footings to depth required by Washington County frost depth and soil conditions, sized for deck load. Structural posts, beams, and joist framing per structural design. Joist hangers at all joist-to-beam connections — not toe-nailed.
Decking, Railing, Stairs, and Inspection
Decking installed with appropriate fasteners per material. Code-compliant railing: 36 inches minimum under 30 inches above grade, 42 inches for higher decks, balusters maximum 4 inches apart. Code-compliant stairs. Permit inspection scheduled and attended. Written workmanship warranty issued.
Deck Materials for Hillsboro's Climate
Hillsboro's 38-inch annual rainfall and sustained wet season require careful material and fastener selection:
Pressure-Treated Lumber — Best Value for Most Hillsboro Decks
Current ACQ or CA-B pressure-treated lumber is rated for direct ground contact and above-grade applications. Cost-effective and structurally sound. Fasteners must be hot-dip galvanized, stainless, or specifically ACQ-rated — standard zinc-coated hardware corrodes rapidly in contact with ACQ pressure treatment.
Composite Decking (Trex, TimberTech, Fiberon) — Lowest Lifetime Maintenance
Modern capped composite decking does not require sealing, does not splinter, and resists staining and fading significantly better than the first-generation composites installed on 1990s-2000s Hillsboro homes. Higher upfront cost than pressure-treated but lower lifetime maintenance. The right choice for Intel and Nike homeowners prioritizing a low-maintenance outdoor space.
Cedar — For Hillsboro Homeowners Who Prioritize Appearance
Western red cedar provides visual character. Requires sealing or staining every 2–3 years in Hillsboro's wet climate. Cedar's natural rot resistance does not extend to structural framing — posts and beams should still be pressure-treated near grade or subject to water contact.
Deck Installation Requirements for Hillsboro Homes
Lead Paint Note
Deck ledger removal on pre-1978 Hillsboro homes — approximately 22% of the housing stock — may disturb lead-painted trim and siding at the ledger area. VResh is EPA Lead-Safe Certified and follows RRP protocols when pre-1978 painted surfaces are disturbed.
Building Permits for Deck Installation in Hillsboro
All attached decks above 30 inches in height require a building permit in Hillsboro. Deck installation without a permit affects the homeowner's ability to sell the home. Building permits in Hillsboro are handled through the Hillsboro Civic Center — 150 E Main Street, Fourth Floor, Hillsboro, OR 97123; phone: 503–681-6153; email: Permits@Hillsboro-Oregon.gov; hours: Monday–Friday, 8:00 am–5:00 pm. Applications can be submitted in person or by email. Inspections are available Monday–Friday, with same-day service when scheduled before 6:00 AM. VResh handles the Hillsboro permit process on your behalf.
What Deck Installation Costs in Hillsboro, OR
Deck cost in Hillsboro depends on size, elevation, material selection, and the extent of structural repair required at the ledger and framing. General planning ranges:
| Deck Installation — General Cost Ranges (Labor + Materials) | Estimated Cost |
|---|---|
| Standard ground-level or low-elevation deck (12'×16', pressure-treated, simple rectangular) | $8,000–$15,000 |
| Cedar or capped composite decking | add 30–50% to material cost |
| Multi-level or elevated deck (tall posts, cross-bracing) | $15,000–$40,000+ |
| Rim joist and ledger structural repair (found during removal) | $1,500–$8,000 depending on extent |
(503) 272-6436 — Call or Text, Available 24/7
We answer calls and texts at any hour. For storm damage, active leaks, or structural emergencies, calling directly is the fastest path to a response.
Deck Installation FAQs — Hillsboro, OR
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VResh Construction provides window replacement, siding installation, roofing, dry rot repair and full exterior renovation services throughout the Portland metro area and Southwest Washington.
Portland Metro — Oregon
Southwest Washington
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Request Your Free Deck Installation Estimate in Hillsboro
Whether it is a new deck with a properly flashed ledger on a Hillsboro two-story, a composite board replacement on a 1990s deck with solid framing, structural ledger and rim joist repair before a new deck is attached, or a covered pergola addition — VResh responds same-day or within 24 hours.