Special - $1250 off on roof replacements or 0% APR for one year
GAF Master Elite Roofing Company for Expert Roof Repairs & Replacements
Keeping homes dry since 1984
In the Portland metro area, a roof is more than a structural necessity; it is a high-performance shield against 40+ inches of annual rainfall. At J&J Roofing & Construction, we have been keeping homes dry since 1984, managing the complete technical lifecycle of property protection in Multnomah County.
Our expertise is rooted in the specific requirements of the Portland Bureau of Development Services (BDS). Whether your property is in a historic district like Irvington or a steep slope zone in the West Hills, we navigate the complex intersection of building codes and weather rated materials that generic contractors overlook.
ONLY 2% OF ROOFING COMPANIES ARE GAF MASTER ELITE NATION WIDE
J&J Roofing & Construction is a specialized exterior contractor serving Multnomah and Washington Counties. As a GAF Master Elite® expert, we manage the city building permitting process, ensuring your replacement meets all city codes and standards for lasting durability. From the Pearl District and Nob Hill in the Northwest to Sellwood and Mt. Tabor in the Southeast, our company provides expert service to every corner of the area. We are local specialists who know the specific historical and modern needs of homes in Laurelhurst, St. Johns, and the Hollywood District.
From classic Craftsman homes in Laurelhurst to mid-century properties in the West Hills, J&J Roofing & Construction handles every tear-off with precision. Because we routinely operate within Portland’s compact residential lots, our crews are experts at navigating tight property lines while protecting your mature landscaping from debris.
Our crew strips your roof down to the bare deck, thoroughly inspecting the wood for moisture trapping caused by our dense local tree canopy and persistent shade. We don’t just overlay new shingles; we upgrade your home’s defenses to meet local structural codes, replacing worn flashing and installing premium underlayment engineered to prevent the moss accumulation and gutter damming common to older Multnomah County neighborhoods.
Our repair crews utilize imaging and moisture metering to locate sub surface water travel. We specialize in complex repairs for historic Portland bungalows and modern builds alike. Whether it’s wind damaged flashing in the West Hills or moss compromised shingles in Northeast Portland, we restore to 100% integrity.
Serving the Portland Urban Core, we provide high performance TPO and PVC flat roof solutions. We understand the specific load requirements of flat roofs in North Portland, focusing on long term ROI and minimal operational impact for business owners.
Designed for the tree heavy canopies of Forest Park and Southwest Hills, architectural metal roofing provides a permanent solution. Our standing seam systems are custom fabricated from high gauge steel, featuring hidden fasteners to prevent leaks.
Moss is the #1 predator of the local residential roofs. In neighborhoods like Eastmoreland, heavy shade allows moss to thrive. We provide professional moss removal that neutralizes growth without damaging landscaping or shingle integrity.
Our GAF Master Elite installations utilize shingles with StainGuard Plus™ Algae Resistance. These feature copper microspheres that neutralize moss growth for years. For homeowners in Mount Tabor, this is the most cost effective way to get a 50 year system.
Proper attic ventilation is the single most critical factor in your roof’s lifespan, yet it is often completely ignored on older Portland properties. Classic Craftsman, Foursquare, and Tudor architectural styles frequently feature narrow eaves or zero-overhang rafter tails. This architectural profile makes standard soffit intake venting physically impossible. Without an engineered air balance, rising summer heat and winter interior moisture get trapped right against the roof deck, causing rapid plywood deterioration and mold growth.
At J&J Roofing & Construction, we specialize in retrofitting historic Portland roofs with custom ventilation systems. We calculate exact net-free ventilating area requirements to install low-profile intake systems and custom ridge venting. This specialized airflow path protects your delicate plaster ceilings, reduces your summer cooling strain, and ensures your roof deck stays dry and structurally sound without compromising your home’s historic architectural profile.
Yes. Within the city limits, any full roof replacement requires a building permit from the city. J&J handles the entire process, from filing drawings to the final inspection close-out.
In the damp PNW climate, poor ventilation traps warm, moist air in the attic, leading to "attic rain" (condensation) and mold. We install balanced intake and exhaust systems to prevent decking rot and ensure your shingle warranty remains valid.
Neighborhoods like Irvington and Ladd's Addition have strict material and profile requirements. We specialize in matching historic aesthetics with modern GAF composite systems that pass historic review while providing superior protection.
We utilize a surgical tear-off process during the rainy months, only removing sections that can be completely waterproofed by the end of the day. This ensures your home interior is never exposed to the elements.
Costs vary based on pitch, material, and city permitting fees. A standard residential replacement in Multnomah County typically ranges from $12,000 to $25,000, including municipal permit compliance and GAF Master Elite warranties.
Typically, no. Most Oregon carriers view moss as a maintenance issue. Regular professional cleaning and preventative treatments are critical to preserving your coverage and extending the life of your roofing system.
Standing water is the primary threat to flat roofs in the Industrial District. We recommend bi-annual inspections to clear drain blockages and inspect heat-welded seams to ensure your monolithic barrier remains waterproof.
It represents four decades of local experience. We don't just patch leaks; we restore structural integrity. Our long-standing tenure means we've seen every PNW weather event and know exactly how to build systems that survive them.
From the steep slope challenges of the West Hills to the historic preservation requirements in Ladd’s Addition, our teams navigate the specific complexities for regional zoning and environmental roofing standards. We understand that a roof in the Portland metro corridor faces unique hydrostatic pressure compared to rural properties.
Whether we are managing a complex tear off in the Pearl District or a multi day installation in Happy Valley, our process is engineered to meet and exceed local municipal drainage standards. By focusing on precision flashing and reinforced valleys, we protect Portland properties from the concentrated rainfall patterns typical of the Willamette Valley.
We provide factory certified roofing installations and moss mitigation throughout the following areas:
From historic restorations in Multnomah County to modern commercial upgrades, our crews are active every day throughout the local metropolitan area. Explore our recent work and technical solutions.
This upscale residential property in Portland’s challenging West Hills was a prime candidate for a complete roofing system overhaul. The large, multi level home, Perched on a steeply sloped, manicured lot, this large, multi-level estate featured an aging asphalt shingle roof that was well past its prime. Its complex architecture, numerous valleys, and varying pitches demanded a methodical, high-precision approach.
Project Details
J&J Roofing & Construction is a multi state contractor licensed in Oregon (CCB# 220419). We provide expert repairs and full replacements for the following communities:
Neighborhood: Marshall Park | Zip Code: 97219
“If only there was a way to give J&J TEN stars! To make a long story short, we were horribly scammed by criminal “roofers” who destroyed our roof just before a major rainstorm came through. When I reached out to J&J, they responded IMMEDIATELY, got someone out to give me a very detailed breakdown of the work & materials required AND got a three-man crew to my home THE SAME DAY to seal our roof that the scammers had stripped the shingles from – saving us from what would have been catastrophic water damage. Every step of the way, they were kind, reassuring, professional, and EXTREMELY helpful, going above and beyond!!”
— Benjy Wertheimer, SW Portland
Neighborhood: Kenton / Interstate | Zip Code: 97217
“I had a hole in the roof and needed new shingles and J&J roofing sent someone to look at it. J&J sent out a crew to fix and reroofed the house and did a real good job of it. It took them just a day to do it and clean up the mess around the house. The cost to do it was fair and I was happy with the work they done.”
— Ivan Ochsner, North Portland
Neighborhood: Vernon / Alberta Arts | Zip Code: 97211
“We had a great experience with J&J Roofing from the initial inspection and cost estimate to the cleanup and final meeting. The work was done quickly and our new roof looks great! The couple questions we had during the installation were answered quickly. Great warranty too!”
— Deborah Lantz, Northeast Portland
⭐ ⭐ ⭐ ⭐ ⭐ 5.0 Rating Verified by Real Pacific Northwest Homeowners
