Replacement Window Installation

The quality of a replacement window project depends on more than the window itself. Accurate measurements, proper opening preparation, insulation, sealing, water management, fastening, trim, and finishing all affect how the completed window looks and performs.

Valdicass provides professional Pella® replacement window installation throughout Chicago and the surrounding suburbs, with both pocket and full-frame installation methods available depending on the existing conditions and project requirements.

As a Pella Platinum Elite Certified Contractor serving Chicagoland homeowners since 1997, we specialize in evaluating the complete window opening and planning the installation along with the replacement window.

Valdicass installer completing a Pella window installation inside an Oak Park IL home
Valdicass installing Pella replacement windows while working around the home’s existing interior trim.

Why Professional Window Installation Matters

A high-quality window cannot provide its intended performance if the installation doesn’t properly address the opening around it.

The replacement window must be correctly sized, positioned, secured, insulated, sealed, and finished.

The installer also needs to understand how the new window interacts with the home’s existing construction.

Depending on the project, this can include:

  • Existing window frames
  • Rough openings
  • Wall construction
  • Exterior siding or masonry
  • Flashing
  • Insulation
  • Interior trim
  • Exterior trim
  • Sills
  • Water-management details

That’s why Valdicass evaluates existing conditions before determining how to install the replacement window.

Our Replacement Window Installation Process

Every home and opening is different, but a professional replacement window project generally follows a carefully planned process.

1. Evaluate the Existing Windows

Before ordering the new windows, we evaluate the existing windows and surrounding conditions.

We consider factors such as:

  • Existing window style
  • Frame condition
  • Opening dimensions
  • Interior trim
  • Exterior materials
  • Signs of deterioration
  • Existing insulation
  • Desired changes to the window
  • Proposed installation method

This initial evaluation helps determine the appropriate replacement approach.

2. Measure the Window Openings

Accurate measurements are essential for made-to-order replacement windows.

Valdicass measures the openings based on the Pella products and installation method planned for the project.

Homeowners don’t need to determine final ordering dimensions themselves.

We verify the necessary measurements before ordering the windows.

3. Select the Pella Windows

Once we understand the existing openings and project objectives, we can help you select the appropriate Pella products.

Depending on the project, options may include:

We also help you choose the right window styles, glass, colors, grilles, hardware, screens, and other available options.

4. Determine Pocket or Full-Frame Installation

Not every replacement window should be installed using the same method.

Before installation, we determine whether the project is appropriate for pocket replacement or full-frame replacement.

That decision is based on the existing window, frame condition, surrounding construction, desired finished appearance, and overall project scope.

Pocket Window Replacement

With a pocket replacement, portions of the existing window frame remain in place.

The new replacement window is installed within the existing opening when the existing frame and surrounding conditions are appropriate for this method.

Pocket replacement can reduce the amount of existing material that needs to be removed.

However, because portions of the existing assembly remain, you need to consider the condition and dimensions of that assembly carefully.

Pocket installation isn’t automatically the best approach for every home.

Full-Frame Window Replacement

Full-frame replacement involves removing more of the existing window assembly.

This provides greater access to the opening and surrounding conditions.

Depending on the project, full-frame replacement may be appropriate when:

  • Existing frames need to be removed
  • Existing materials are deteriorated
  • Interior trim is being replaced
  • Exterior trim is changing
  • The window configuration is changing
  • The project requires greater access to the opening
  • The homeowner wants a more comprehensive replacement

Full-frame installation can also provide greater flexibility when the new windows differ from the existing configuration.

Valdicass evaluates the individual project before recommending an installation method.

5. Prepare the Home for Installation

Before removing the existing windows, we prepare the work area.

The exact preparation depends on the window location, interior finishes, exterior conditions, and project scope.

Our goal is to create an organized work area and protect surrounding surfaces while we remove the existing windows and install the new ones.

6. Remove the Existing Window

The removal process depends heavily on whether the project is pocket or full-frame replacement.

Remove the existing window carefully to create the conditions required for the new installation.

With full-frame replacement, more of the existing window assembly is removed, allowing greater access to the opening.

Once the existing materials are removed, previously concealed conditions may become visible.

7. Inspect & Prepare the Opening

Before installing the new window, the opening must be ready to receive it.

Depending on what is accessible and the scope of the project, preparation may involve evaluating the following:

  • Framing
  • Sill conditions
  • Existing insulation
  • Opening dimensions
  • Water-management details
  • Surrounding materials

If unexpected conditions are discovered after removal, they should be evaluated before simply covering them with the new window.

8. Position & Secure the New Window

The new Pella window is then positioned within the prepared opening.

Proper placement is important for appearance and operation.

The window must be installed according to the requirements of the selected product and installation method so that the sash, locks, hardware, and other operating components function as intended.

The window is then secured appropriately for the installation.

9. Insulate Around the Window

The space between the replacement window and surrounding opening is an important part of the installation.

Insulation helps address air movement and thermal transfer around the perimeter of the window.

The exact materials and method depend on the window, opening, and installation conditions.

This is another reason why window performance shouldn’t be evaluated based on the glass alone.

10. Seal & Address Water Management

Exterior sealing and water management are critical considerations in a replacement-window installation.

Details depend on the home’s construction and the installation method.

A window installed in siding may require different detailing from one installed within masonry or another exterior system.

The goal is to integrate the replacement window with the surrounding construction rather than treating it as an isolated component.

11. Complete Interior & Exterior Finishing

The final appearance of the window depends significantly on the finishing work around it.

Depending on the project, this may involve:

  • Interior trim
  • Exterior trim
  • Woodwork
  • Caulking and sealing
  • Finishing transitions to siding or masonry
  • Other project-specific details

Full-frame projects can involve more extensive finishing because more of the existing window assembly may be removed.

The specific finishing included in a project should be identified in the proposal and scope of work.

12. Check Window Operation

After installation, the window should be checked for proper operation.

Depending on the window style, this can include opening and closing the sash and checking the following, as applicable:

  • Locks
  • Hardware
  • Screens
  • Sash operation
  • Alignment
  • Other operating components

This final check helps confirm that the window operates as intended before the installation is considered complete.

13. Clean the Work Area

Window replacement involves removing existing materials and creating construction debris.

Once the installation and finishing work are complete, the work area is cleaned, and applicable installation debris is removed as part of the project.

Installing Different Window Styles

Different operating styles require different considerations during selection and installation.

Valdicass installs a range of Pella window styles, including:

  • Double-hung windows
  • Single-hung windows
  • Casement windows
  • Awning windows
  • Sliding windows
  • Picture and fixed windows
  • Bay and bow windows
  • Specialty and custom windows

The appropriate style depends on the opening, architecture, ventilation requirements, view, accessibility, and desired appearance.

Wood Window Installation

Pella Reserve and Pella Lifestyle Series provide wood-window options for homeowners who value real wood interiors and architectural design flexibility.

Wood-window projects may involve coordination with interior trim, woodwork, stains, painted finishes, exterior cladding, and other architectural details.

Installation should account for both the window and the surrounding finish work.

Fiberglass Window Installation

Pella Impervia provides fiberglass window options for homeowners interested in a durable, relatively low-maintenance frame material.

Impervia windows can be used in a variety of replacement configurations depending on the opening and selected window style.

As with any replacement window, proper measurements, opening preparation, insulation, sealing, and finishing remain important.

Vinyl Window Installation

Pella 250 Series provides vinyl replacement window options.

Vinyl can be a practical choice for homeowners who want a relatively low-maintenance frame material.

The appropriate installation method still depends on the existing opening rather than the frame material alone.

Window Installation in Older Homes

Older homes may require additional evaluation before ordering replacement windows.

Previous renovations, older framing methods, existing trim, masonry, siding changes, and modifications made over the life of the home can all affect the installation.

This is especially relevant throughout Chicago and many established western suburbs, where homes can vary significantly in age and construction.

Valdicass evaluates the actual opening rather than assuming every window in an older home was constructed or previously replaced the same way.

Window Installation in Brick & Masonry Openings

Replacement windows installed within brick or masonry require careful consideration of the surrounding opening.

Measurements, existing frames, sill conditions, exterior transitions, sealing, and water management can differ from installations in other exterior materials.

These conditions should be evaluated as part of the installation plan before the replacement windows are ordered.

Changing Window Styles or Configurations

A replacement project doesn’t always mean putting the exact same window style back into the opening.

Depending on the home and project requirements, homeowners may want to:

  • Change from one operating style to another
  • Replace several windows with a different combination
  • Add larger fixed glass areas
  • Install specialty-shaped windows
  • Replace a flat window with a bay or bow
  • Modify an existing opening

Projects involving changes to the opening or surrounding construction require additional planning beyond conventional window replacement.

Valdicass can evaluate the proposed design and determine the appropriate scope.

Window Installation & Energy Performance

Energy performance depends on the complete window assembly.

The frame, insulating glass, Low-E coatings, weatherstripping, size, orientation, installation, insulation, and sealing all contribute to the completed window.

That’s why we don’t promise a specific reduction in utility bills simply because windows are being replaced.

Instead, we help homeowners compare the performance information for the specific Pella products they’re considering and install the selected windows to meet the project’s requirements.

Why Choose Valdicass for Window Installation?

Valdicass has provided window and exterior remodeling services throughout Chicagoland since 1997.

As a Pella Platinum Elite Certified Contractor, we specialize in Pella replacement windows and understand that installation must be planned alongside product selection.

We can help with:

  • Professional measurements
  • Pella product selection
  • Wood, fiberglass, and vinyl windows
  • Window styles and configurations
  • Glass options
  • Pocket replacement
  • Full-frame replacement
  • Opening preparation
  • Insulation and sealing
  • Interior and exterior finishing

From the initial evaluation through final installation, our goal is to deliver a carefully planned replacement window project based on your home’s actual conditions.

Schedule Your Replacement Window Consultation

If you’re considering replacement windows, Valdicass can evaluate your existing windows, discuss the available Pella products, and help determine the appropriate installation method for your project.

Call Valdicass at 708-255-5231 to discuss your window replacement.

Request a Free Estimate

Read Our Rave Reviews

Valdicass has earned numerous positive reviews for our outstanding service. Read about our customers’ pleasant experiences working with us, then contact us today to learn how we can improve your home. 

“I have worked with Valdicass in the past with windows in a prior home and was so pleased that we used them again at our current home. The installers arrived on time and got to work right away. They were also very professional, took care of my furniture very well, and left everything clean after they were done. It’s been over a month since the installation and the windows are working perfectly and look great too. I recommend Valdicass for your next project as you will not be disappointed.”

Eddie G.

“Valdicass installed new windows at my house, and my wife and I couldn't be happier. The quality of the windows are great. Their communication, installation and sales team were really excellent to work with. Their cleanup was also excellent. They arrived on time and completed the job in a shorter timeframe than I would have expected. I would definitely recommend to anybody!”

Bob P.
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Valdicass

8920 W 47th St
Brookfield, IL 60513

(708) 255-5231

Hours
Mon - Fri: 9:00AM - 5:00PM
Saturday: 9:00AM - 3:00PM (By Appointment Only)