Roof Replacement in Portland, OR
CertainTeed, Owens Corning & Malarkey Certified Roofing Team. Full Tear-Off. Ice & Water Shield. Complete Flashing System. 10-Year Workmanship Warranty. Licensed OR #241979 | WA #VRESHCL776ND.
A roof replacement is the single largest exterior investment most Portland homeowners make — and one where the installation quality, material selection, and flashing details determine whether you get 20 years of problem-free performance or a new roof that starts leaking around flashing penetrations within the first few years. VResh Construction's certified roofing team performs complete roof replacements on Portland-area homes using CertainTeed, Owens Corning, and Malarkey products — all three major manufacturers whose warranties require certified installation and offer the strongest coverage.
We perform full tear-offs on every replacement project. We do not install new shingles over existing roofing. We inspect the roof deck after tear-off, repair any damaged sheathing, install proper ice and water shield at all eaves and valleys, install synthetic or felt underlayment throughout, and complete a thorough flashing system at all penetrations, valleys, and roof-to-wall intersections. Then the shingles go on.
CertainTeed Certified
Certified installer for CertainTeed shingle products
Owens Corning Certified
Certified installer for Owens Corning roofing systems
Malarkey Certified
Certified for Malarkey's premium and algae-resistant lines
Full Flashing System
All valleys, penetrations & roof-to-wall intersections
EPA Lead-Safe Certified
Pre-1978 homes handled with full RRP compliance
10-Year Workmanship Warranty
Plus manufacturer product warranty on all shingles
(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.
Roof Replacement vs. Roof Repair — How to Tell the Difference
Not every roofing situation calls for a full replacement. Here is our honest framework for advising homeowners on when replacement is the right call and when targeted repair is the more appropriate—and cost-effective—choice.
Our Roof Replacement Process — What Happens on Every Project
Roofing Products We Install
CertainTeed — Landmark & Presidential Product Lines
CertainTeed is one of the longest-established roofing manufacturers in North America. Their Landmark series (30-year architectural shingles) and Presidential TL (40-year, shake-style) are among the most popular roofing products in the Pacific Northwest.
CertainTeed's SureStart PLUS warranty coverage requires installation by a CertainTeed-certified contractor. VResh Construction is CertainTeed certified.
Landmark in Weathered Wood or Colonial Slate is the most commonly specified product on Portland-area homes — it complements the Craftsman and traditional architectural styles prevalent in the Portland market.
Best for: Most Portland residential applications. Strong manufacturer support, wide color selection, and strong warranty program.
Owens Corning — Duration and TruDefinition Product Lines
Owens Corning's Duration series features SureNail Technology — a reinforced nailing zone that provides wind resistance ratings of up to 130 mph. Portland's windstorm events make this feature worth noting.
Duration Premium with WeatherGuard HP is specifically designed for high-wind and severe weather environments — appropriate for Portland homes exposed to storms from the west.
Owens Corning's Preferred and Platinum warranty tiers require installation by a certified contractor. VResh Construction is Owens Corning certified.
Best for: Homes on exposed ridges or westward-facing rooflines with higher wind exposure. Strong warranty coverage with certified installation.
Malarkey — Vista and Legacy Product Lines
Malarkey is a Portland-based roofing manufacturer — one of the few premium roofing brands that specifically formulates products for Pacific Northwest conditions. Their products contain Nexgen polymer-modified asphalt, which remains flexible in cold temperatures and resists the brittleness that causes shingle cracking during freeze-thaw cycles.
Malarkey's Legacy and Vista series also carry a smog-reducing granule technology (Scotchgard-treated) that resists algae growth — particularly valuable in Portland's damp, overcast climate, where algae colonization is accelerated.
As a local manufacturer with a strong warranty program, Malarkey is an excellent choice for Portland homeowners who want a product specifically engineered for Pacific Northwest conditions.
Best for: Portland homeowners who want a locally manufactured product specifically designed for this climate. Particularly good for north-facing rooflines and heavily shaded applications where algae is a concern.
Roofing in Portland's Climate — What Matters Here
Portland's climate creates roofing demands that differ from those in drier regions. Here are the climate factors that influence our material recommendations and installation approach for homes in the Portland area.
Sustained rainfall (37+ inches annually)
Valley flashing and ice & water shield in valleys are especially critical in Portland — valleys channel enormous water volumes during heavy rain events, and inadequate flashing at valleys is a very common source of leaks.
Moss and algae growth
Moss and algae growth: Portland's damp, low-UV winter conditions are ideal for colonization of roof surfaces by moss and algae. Malarkey's Scotchgard-treated granules and CertainTeed's StreakFighter granules resist algae growth. Algae-resistant products are worth the modest cost premium in Portland's climate.
Freeze-thaw cycling
Portland winters regularly cycle through freezing temperatures (often 20s–30s°F at night) and above-freezing temperatures during the day. This cycling stresses flashing materials and can cause ice damming at eaves on under-insulated roofs. Malarkey's polymer-modified asphalt remains flexible through these cycles; standard asphalt shingles can become brittle.
Wind events
Portland experiences strong west and southwest windstorms, particularly in fall and winter. Wind-rated shingles (Owens Corning Duration's 130 mph rating, for example) and proper starter strip installation at eaves and rakes meaningfully reduce wind uplift damage risk.
What Does a Roof Replacement Cost in Portland, OR?
General Cost Ranges — Portland, OR (Full Tear-Off + Installation)
Standard ranch or bungalow (1,200–1,800 sq ft footprint, simple gable or hip roof): $9,000–$16,000 in 30-year architectural shingles
Two-story home or complex roof (multiple valleys, dormers, steep pitch): $14,000–$25,000+
Premium shingles (Duration, Presidential TL, Malarkey Legacy): Add 15–25% to above
Roof deck repairs: $400–$2,000+, depending on the extent of sheathing damage found
Chimney re-flashing: $400–$800
Skylight re-flashing: $300–$600 per skylight
Typical Project Timeline
Estimate: Same day or within 24–48 hours of request
Permit (when required): 1–3 business days in most Portland jurisdictions
Installation: 1–2 days for standard residential roof; 2–4 days for complex or large roofs
Weather hold: We monitor the forecast and schedule installations during weather windows. We do not begin a tear-off that we cannot complete in a single day.
Client's Talk
We have a wealth of experience working as main building contractors on all kinds of projects, big and small, from home maintenance and improvements to extensions, refurbishments and new builds.