NW Brothers provides window replacement and installation for homeowners throughout Portland. We evaluate the visible condition of the existing windows, surrounding trim and accessible exterior transitions before preparing a written estimate for the proposed work.

Replace outdated, damaged, drafty, or difficult-to-operate windows with properly fitted new windows. We carefully evaluate the existing openings and complete the replacement work with attention to fit, sealing, trim, and surrounding exterior materials.

Professional window installation with careful attention to the details that help protect your home. We focus on proper fit, flashing, sealing, trim and the surrounding opening to create a clean, durable installation.

Coordinate exterior window and door replacements within one organized remodeling project. This approach creates a consistent plan for removal, installation, exterior repairs, trim work and finishing details, with clear communication throughout the project.
Air movement around a closed window may indicate problems with the window, installation, seals or surrounding opening.
Windows that stick, bind, refuse to stay open or no longer lock properly may be approaching replacement.
Damaged frames, deteriorated trim, cracked components or recurring moisture around the opening should be evaluated.
Condensation or fogging between panes may indicate that an insulated glass seal has failed.

Double-hung windows offer a classic appearance that works well with many traditional Portland homes. Both sashes can open for flexible ventilation and easier cleaning.

Casement windows are hinged on the side and open outward with a crank. Their wide opening provides excellent ventilation, while the closed sash creates a tight seal.

Sliding windows open horizontally and work well in rooms with limited exterior clearance. Their simple operation and wide glass area make them a practical choice for many homes.

Picture windows use a large fixed pane to bring more natural light into the home. They provide unobstructed views but do not open for ventilation.

Awning windows are hinged at the top and open outward from the bottom. Their design allows ventilation while helping limit rain from entering through the opening.

Bay and bow windows extend outward from the home to create more interior space and wider outdoor views. They can add natural light and architectural character to living rooms, dining rooms and bedrooms.
Window replacement costs vary based on the number, size and style of windows, the selected products, installation access and the condition of the existing openings. Exterior trim, flashing, siding connections, interior finishing and deterioration discovered around a window can also affect the final scope. NW Brothers evaluates the project and provides a written estimate based on the specific work proposed for your Portland home.

NW Brothers can evaluate your existing windows, discuss the replacement scope and provide a written estimate for the proposed installation. Contact us to schedule an on-site visit for your Portland home.
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 which windows concern you and describe any drafts, damage, moisture or operational problems.
We evaluate the accessible windows, openings and surrounding exterior conditions.
You receive a proposed scope describing the window work and related installation details.
The existing windows are removed and the new windows, flashing, sealing and trim are completed according to the agreed scope.
We review the completed work and discuss any final project details with you.

Your home should be a comfortable, dependable place where your family can enjoy everyday life. Replacing aging, damaged or difficult-to-operate windows can improve comfort, functionality and the appearance of your living spaces. NW Brothers carefully plans each installation around your home, your priorities and the condition of the existing window openings.
NW Brothers provides window replacement and installation for homeowners throughout Portland. Contact our team to discuss aging, damaged, drafty or difficult-to-operate windows and request an on-site 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.

Window replacement costs depend on the number, size and style of windows; the selected products; installation access; trim requirements; and the condition of the existing openings. Related repairs discovered around a window can also affect the final scope. NW Brothers provides a written estimate after evaluating the project.
Window replacement does not always require replacing every window in the home. A single damaged or deteriorated window may be addressed separately, depending on the project scope and scheduling. Contact us with information about the window so we can determine whether the project is a good fit.
Yes. Replacing several windows together allows the measurements, ordering, installation and finishing work to be coordinated under one project plan. We can discuss whether you want to replace a selected group of windows or plan a larger replacement project.
Visible deterioration around a window should be addressed before the installation is completed. If damaged materials are discovered, we will discuss the condition, explain any related work that may be needed and update the proposed scope before completing additional repairs.
When windows and siding are both being replaced, the projects should be planned together. Coordinated scheduling can make it easier to address flashing, trim and the connections between the window openings and surrounding siding. The correct sequence depends on the existing materials and the scope of each project.
The schedule depends on the number and type of windows, accessibility, the condition of the existing openings and whether related trim or exterior repairs are required. After evaluating the project, we can provide a more specific installation schedule with the written scope.
A building permit is generally not required when an existing window is replaced without changing the header size or location and without reducing the clear opening. A permit is generally required when adding a new window or widening an existing opening. Historic or design-zone properties may have additional requirements, so the specific property and project should be confirmed with Portland Permitting & Development.
Replacement windows may reduce drafts and improve efficiency, particularly when the existing windows are damaged, poorly sealed or single-pane. Actual savings depend on the existing windows, selected products, installation quality, climate and overall condition of the home. We do not promise a specific reduction in energy costs.