NW Brothers provides professional roof repair, installation and replacement for homeowners throughout Portland. We evaluate visible roofing conditions, discuss the available options and provide a written estimate based on the proposed scope.

A focused roof repair may be appropriate when damage is limited and the surrounding roofing remains in serviceable condition. The proposed work depends on the source and extent of the problem and may address damaged shingles, flashing or another vulnerable roof transition.

NW Brothers completes new roof installation as part of qualifying construction and exterior improvement projects. The roof is planned around the structure, roof deck, slopes, valleys, penetrations, flashing and drainage requirements of the building.

When roofing has widespread deterioration, recurring leaks or significant underlying damage, complete replacement may provide better long-term value than repeated repairs. Replacement can include removal of the existing roofing, review of the exposed deck, preparation and installation of the new roofing system.
Cracked, lifted, missing or broadly deteriorated shingles can leave the roof more vulnerable to water entry.
Leaks that return in different areas may indicate a broader problem rather than one isolated repair.
Soft, deteriorated or visibly uneven decking may indicate that moisture has affected the material supporting the roof.
When several roof areas have already required work, replacement may provide a more dependable result than continuing with individual repairs.

NW Brothers has completed asphalt-shingle roof installation and replacement work. Asphalt shingles are available in different profiles and colors and can be used on many residential sloped-roof designs.

The roof deck supports the roofing assembly. When existing roofing is removed during replacement, exposed areas can be reviewed for visible damage that may need to be addressed before the new roof is installed.

Underlayment provides a protective layer between the roof deck and the finished roofing material. Its installation must be coordinated with the selected roofing system and roof design.

Flashing helps manage water at roof edges, walls, valleys and penetrations. These transitions interrupt the main roof surface and require careful detailing.

Roof and attic ventilation can affect heat and moisture conditions beneath the roof assembly. Vent locations and existing attic conditions should be considered as part of the overall roofing system.

Valleys, edges and roof-to-wall intersections must direct water toward the drainage system. Leaves, needles and other debris can hold moisture or interfere with drainage when allowed to collect.
Choosing between repair and replacement depends on more than roof age. The decision should consider the location and extent of the damage, condition of the surrounding material, previous repairs, visible deck concerns and whether compatible replacement materials are available.
A repair may be appropriate when the problem is isolated and the surrounding roof remains sound. Replacement may make more sense when deterioration affects several areas, leaks continue to return or the existing roof no longer provides consistent protection.


– Missing, cracked or lifted shingles
– Widespread shingle deterioration
– Repeated leaks in multiple areas
– Water staining on ceilings or walls
– Dampness or staining in the attic
– Soft or deteriorated roof decking
– Sagging or visibly uneven roof areas
– Damaged flashing at several transitions
– Heavy moss or organic growth
– Roofing debris appearing after wind or severe weather
– Multiple previous repairs that have not resolved the problem
Do not wait for a small roofing concern to become a larger interior problem. NW Brothers can evaluate the visible condition, discuss whether repair or replacement should be considered and provide a written estimate for the proposed roofing work.
We believe that honesty and a commitment to the safety of your home are the foundation of every successful project, and that’s why homeowners trust us and recommend our work.


The NW Brothers Construction LLC were very professional and efficient AND reasonably priced. They installed 7 new first floor windows in our 103 yr old Hall. They dealt with the many variables that came up with great ideas and helpful options and suggestions. –


I had an excellent experience with NW Brother Construction to change my roof from start to finish. They were professional, responsive, and incredibly easy to work with.


Hired NW Bros to replace all our LP siding, exterior paint, and do some interior repairs. They not only had the best price, but also did an outstanding job. They were punctual and stayed on schedule, even with a few rain days.
Tell us what you have noticed, including leaking, staining, missing roofing or previous repairs, and request your free estimate.
We visit the property to review accessible roof areas, discuss the roofing concern and assess the proposed project.
You receive a written estimate outlining the recommended roofing scope and expected project cost.
We coordinate the project schedule based on the approved scope, material availability and suitable weather conditions.
Our team completes the agreed roofing work and manages the removal and cleanup included in the project scope.

Your roof helps protect the living space and materials underneath it from rain and seasonal weather. Addressing damaged roofing before moisture spreads can help reduce the risk of broader damage to the roof assembly and interior.
NW Brothers provides roof repair, installation and replacement for Portland homeowners. We focus on clear communication, a written scope and roofing work based on the condition of the property.
NW Brothers provides exterior and interior construction services in the Willamette Valley and Portland metro area. Portland homeowners can contact our team for roof repair, roof replacement, new installation and a free project estimate.


From start to finish, from getting an estimate to completing the project, these guys did a GREAT job: installing siding, putting up exterior moldings, and replacing exterior windows and doors with great quality.

Damaged or deteriorated decking should be addressed before it is covered by the new roofing assembly. If concealed damage is discovered after roofing removal begins, the affected area should be documented and the recommended change explained before additional work proceeds. The required repair depends on the location and extent of the damage.
The cost depends on roof area, slope, height, complexity, existing roofing, selected material, flashing details, property access and the condition of the deck. Concealed damage discovered after removal may also affect the scope. NW Brothers provides free estimates based on the property and proposed roofing work.
Move belongings away from the affected area and use a container to manage dripping water when it is safe to do so. Contact a roofing contractor to evaluate the likely source instead of climbing onto a wet or damaged roof yourself.
Whether another roofing layer is appropriate depends on the existing assembly, roof condition, product requirements and applicable building standards. Removing the old roofing allows the exposed deck and flashing details to be evaluated before the new system is installed.
Yes. NW Brothers has completed asphalt-shingle roof installation and replacement work. Asphalt shingles are available in a range of profiles and colors for residential sloped roofs. Product selection should account for the roof design, existing conditions and applicable installation requirements.
A focused repair may be possible when damage is isolated and the surrounding roofing remains in serviceable condition. The affected area should be evaluated because water can travel along roof components before appearing inside the home. The recommended scope depends on the likely entry point and the condition discovered during evaluation.
The City of Portland currently states that residential reroofing with a material of similar weight generally does not require a building permit, including replacement of some or all existing sheathing. Projects that change structural conditions, roof weight or other regulated elements may require additional review. Current requirements should be confirmed for the specific property and scope.
Gutters do not always need to be replaced with the roof. Their condition, attachment, drainage and coordination with the roof edge should be evaluated to determine whether they can remain or should be included in the project.
The timeline depends on roof size, complexity, preparation requirements, material availability and weather. Additional work may be required when deteriorated decking or another concealed condition is discovered after removal. NW Brothers can provide a more accurate schedule after evaluating the roof and confirming the proposed scope.