Should You Replace Windows When You Replace Siding?
A Smart Move for Michigan Homeowners
When you’re giving your home a facelift by installing new siding, one question often arises: “Should I replace my windows at the same time?” The short answer is a solid YES, and here’s why bundling these two projects is more than just convenient, it’s cost-effective, energy-efficient, and elevates your home’s value in Southeast Michigan.
Efficiency Through Combined Labor & Logistics
Save Time. Save Money. Save Hassle.
Contractors already on site for siding installations can efficiently include window replacement, which means:
Less disruption to your life and landscaping
Shared setup costs, scaffolding, and protective materials
Better sequencing—install siding under window borders cleanly and seamlessly
Allied Siding and Roofing, serving Oakland County, Livingston County, and parts of Washtenaw County, offers packaged windows, doors, and siding together to streamline projects. This kind of integrated service reduces complexity and improves efficiency.
Nailing Flange is better than Retrofit
What Is a Nailing Flange?
A nailing flange is an integrated frame component that extends around the edge of the window. It allows the window to be:
Fastened directly to the home’s framing ( Bonus: Window size can be ordered at the same size as the previous window)
Covered and sealed with house wrap or a weather-resistant barrier (WRB). This allows for the best and most complete seal.
Properly flashed and integrated with the siding system
How Retrofit Window Installation Works
Old Window Sash Is Removed: The moveable parts of the old window (the sash) are taken out, but the original frame, sill, and trim remain in place.
Retrofit Window Is Inserted: The new window is slipped into the existing frame from the interior or exterior. The retrofit window is always smaller to make sure you don’t have to adjust the framing. In the end you will have slightly less glass for the same cost.
Gaps Are Caulked and Filled: Insulation is added around the new window, and sealant is applied to create a water barrier.
Trim or Wraps May Be Added: To improve the appearance or cover gaps, exterior vinyl or aluminum trim is often applied around the new frame.
Choosing nailing flange windows ensures your new windows are part of a continuous, sealed building envelope, giving your home the best possible protection and performance in Michigan’s weather conditions.
Protect Your New Siding Investment
Prevent Moisture Issues Before They Start
New siding looks great, but any water that seeps in around old, leaky windows can go behind it, causing:
Rotting sheathing
Mold growth
Wasted investment in brand-new siding
Replacing windows ensures they’re properly flashed and sealed under your new siding, guaranteed to look and perform great for years.
A Boost in Curb Appeal (and Home Value)
Windows are Your Home’s Eyes. Make Them Shine.
While fresh siding gives your house a facelift, old windows can stick out like sore thumbs. Modern windows add:
Crisp visual alignment with siding
Stylish grille, frame, and shape upgrades
A refreshing look that appeals to appraisers and buyers
Warranty Peace of Mind
Avoid Buyer Conflicts That Void Coverage
If your siding warranty spans 10–25 years, but your windows fail prematurely, guess which gets blamed? Proper installation is key, and doing them together dramatically reduces warranty issues. Treated as a unified project, both systems are installed and covered as they were intended.
Seasonal Convenience
One Contractor Visit for Two Major Upgrades
Given Southeast Michigan’s short construction season, bundling windows and siding ensures both are completed before winter. That’s fewer project delays, no weather-related shutdowns, and one cleanup instead of two.
Eco-friendly Reduction in Waste & Carbon
Improved home efficiency = less energy used
By upgrading both your siding and windows, you’re reducing energy usage and emissions for decades. This joint replacement improves sustainability while beautifying your home.
Streamlined Design Planning for Your Home
Uniform Lines. Perfect Integration.
Coordinating window styles, heights, and layouts with your siding design ensures:
A cohesive aesthetic (paint, trim, features aligned)
Easier color-matching across materials
Better proportions across your home’s exterior
This design harmony boosts both beauty and neighborhood appeal.
Financing Made Simple
One Project, Easier Planning
Many lenders, like GreenSky, provide financing for exterior remodels. Financing both windows and siding in one shot simplifies your application and lets you bundle rebates or tax incentives for energy efficiency.
A Maintenance Reset to “Like New”
Wipe the Slate Clean
Replacing both siding and windows resets your exterior maintenance:
No more patching trim or repainting window casings
All-new caulking and flashing done together
You get a full 360° warranty refresh. No more surprises in five years
Final Takeaway
Pairing window replacement with siding installation in Southeast Michigan delivers:
Cost efficiencies – save on labor, equipment, and permits
Energy efficiencies – keep your home cozy and HVAC costs down
Moisture protection – guard against damage and call-backs
Stylistic continuity – fresh, seamless curb appeal
Convenience – single project, one timeline, one cleanup
Warranty strength – protect your investment holistically
Get a bundled estimate—ask Allied for a siding + window package
Compare energy upgrades & rebates—ask about low-E, triple-pane options
Coordinate timing—ideally summer or early fall, pre-freeze
Ask about financing—bundled projects are often easier to finance
Confirm warranty coverage—get written assurance for both products
Elevate your Southeast Michigan home! Don’t just refresh your siding, upgrade your windows too. Request a bundled quote and enjoy a smarter, cozier, more stunning exterior that pays dividends for years.
If you're looking for a good local company that can refresh your siding and windows, call Allied Siding and Roofing. They really are the King of Quality.