The window you choose is only half the equation. The other half is who installs it.
| 30 years of experience Our installation crews have almost 30 years of combined window installation experience. | Factory-trained installers Our installers are full-time window specialists and InstallationMasters certified. | Warranty protected As an authorized Infinity dealer and certified installer, we keep your manufacturer warranty intact. | Locally owned We’re a Northeast Wisconsin company, close by for questions and service after the job. |
Replacement windows are a big investment, and most homeowners spend their time comparing brands, materials, and prices. Fewer think about installation, even though it decides how the window performs for the next 20+ years.
A window that is slightly out of square, over-shimmed, or poorly sealed can cause air leaks, water infiltration, and long-term structural problems, no matter how good the product is.
What a proper installation covers
Installing a window takes more than setting it in an opening and driving screws. Four things have to be right:
| Structural integrity Frame is plumb, square, and level. | Moisture management Flashing, sealing, and drainage keep water out. | Thermal performance The right insulation and sealants stop heat loss and drafts. | Aesthetic alignment Clean lines, consistent reveals, and tight trim. |
Professional vs. cut-rate or DIY installation
Infinity by Marvin insists on quality, and that includes who installs its products. Our installers at Windows of Wisconsin are full-time window specialists, not general contractors or handymen. They are FGIA InstallationMasters certified and follow strict installation protocols.
| Question | Windows of Wisconsin | Cut-rate or DIY install |
|---|---|---|
| Trained on the product by the manufacturer? | Yes, factory-trained | Usually not |
| Focus | Full-time window specialists | Generalists, or first-timers |
| Warranty protected? | Yes, authorized dealer and certified installer | At risk if installed incorrectly |
| Handles odd-shaped or non-standard openings? | Accurate measurements and custom trim work | One-size-fits-all approach |
| Job-site cleanup? | Old windows and debris hauled away | Varies |
| Around after the job? | Local team for questions and service | Often hard to reach |
The real cost of getting it wrong
DIY projects and cut-rate installers can leave you with gaps, leaks, and mold, and then you pay to have the work redone. We’ve seen too many homeowners call us to fix someone else’s mistake. Reinstallation can double your expense.
Common installation problems and how we prevent them
| What goes wrong | What it costs you | How professional installation prevents it |
|---|---|---|
| Gaps or misalignment | Drafts, sticking sashes, poor appearance | Each opening is measured, prepared, and fitted precisely |
| Poor flashing and sealing | Water leaks, rot, and mold | Proper flashing, sealing, and drainage |
| Thermal bridging and weak insulation | Condensation, heat loss, higher energy bills | Advanced sealing and insulation techniques |
| Out-of-square or over-shimmed frame | Long-term structural damage | Frame set plumb, square, and level |
| Unauthorized installation | Possible voided warranty | Authorized dealer and certified installer |
Even the best window can’t overcome a poor install. Energy efficiency starts with the installer.
Protect your warranty and your investment
Manufacturer warranties often depend on the window being installed correctly. Hire an unqualified installer and you may risk voiding that protection. Working with an authorized dealer and certified installer keeps your coverage intact, and our work often exceeds manufacturer standards.
A clean, respectful jobsite
Our crews treat every job like it’s their own home. They lay protective coverings, move or cover furniture and landscaping, haul away old windows and debris, and vacuum and wipe down before they leave. Many homeowners tell us they’re amazed by how efficiently and respectfully our crews work.
Built for your home, not a template
Whether your home is a century-old Craftsman or a modern new build, the windows should suit its style and structure. We provide custom trim work, accurate measurements for odd-shaped openings, and interior and exterior finishes tailored to your home.
What working with us looks like
- Free consultation
- Precise measuring
- Expert installation
- Cleanup and haul-away
- Quality check and your sign-off
You get clear communication, detailed timelines and follow-ups, on-time arrival, and courteous service.
A trusted local partner
We’re locally owned and deeply rooted in Northeast Wisconsin, not a national chain with distant customer service. We know local building codes and climate conditions, and we’ll be here to answer questions or provide service years from now.
In summary
Great windows deserve a great install. Professional installation is what lets you keep the performance, longevity, and value you paid for. That’s why our customers trust us, refer us, and come back again and again.
Ready to see the difference?
We’ll walk you through your options, answer every question, and show you why professional installation makes all the difference.
