Upgrade Only the Windows You Need

Yes, you can replace some impact windows and keep your standard windows in the other openings. Many South Florida homeowners start with the openings that matter most and plan the rest for later. This guide explains how to choose those openings, how impact windows differ from standard ones, and what to check before you request a quote from ASP Superhome.

Can You Replace Only Some Windows With Impact Windows?

Yes. A home can get impact windows in some openings while the others stay as they are. Partial replacement is a planning choice. You decide which openings change first and how the new units will look beside the existing ones.

The right plan depends on the home’s window layout, frame types, and your goals. Some homeowners focus on the side of the house that faces the most wind exposure. Others start with one room. Both approaches are common in planning.

Replacing only some of your windows is still work on the building, so Florida’s permit requirement generally applies to it as well. Under Fla. Stat. § 553.79, a building permit for construction, alteration, modification, repair, or addition can’t be issued unless it includes, or has attached, a notice that other restrictions may be found in the county’s public records and that permits may also be required from other governmental entities. For a full overview of your options, read our impact windows guide.

Which Windows Homeowners Often Start With

Homeowners often start with the largest or most exposed openings. Big panes of glass and ground-floor windows are often reviewed first, because they cover the most area. Rooms where your family spends the most time can also move to the front of the list.

Before you request a quote, list every window. Write down its location, size, style, and current condition. A simple list keeps the plan clear and shows the reviewer exactly which openings are in scope.

Sketch each wall of the house. Mark the windows on each wall, then note the room and the window style. Circle the openings you want to change first. This list also makes it easier to compare options later.

Many areas of Florida sit in a wind-borne debris region, so planning should reflect local conditions. The same steps apply whether your home is in Miami, Fort Lauderdale, Fort Myers, or another South Florida city.

How Impact Windows Differ From Standard Windows

Impact windows use laminated impact glass. Laminated glass has a strong layer bonded between two panes. When debris strikes it, the glass can crack but tends to stay in the frame.

Product ratings describe how a product performed in tests. The small missile test and large missile test show how the product handled impact from objects of different sizes. The cyclic pressure test repeats pressure changes that mimic wind. The design pressure (DP) rating states the pressure the product is rated to handle.

These results appear on the product’s documentation. From the outside, impact and standard windows can look alike. The real difference is in the glass, the frame construction, and the tested rating.

Florida law limits how these products can be sold. Section 553.8425 requires products for local approval to demonstrate compliance with the structural windload requirements of the Florida Building Code through one of its listed methods.

Matching Impact and Standard Windows in One Home

Matching means making new and existing windows look like one design. Start with frame color and finish. Then compare profile style, glass tint, sightlines, and hardware finish. Sightlines are the visible edges of the frame and glass.

Operating style matters too. Single hung windows have one moving sash. Double hung windows have two sashes that both move. Casement windows open outward on a crank. Using the same operating style across a wall or room helps the result look intentional.

Mixed installations can show small differences in glass thickness or tint. Ask for samples or product details before you order. Seeing the actual finish next to your current windows helps you catch differences early.

Exterior walls that face the same street or view are often reviewed together. That way the home reads as one design from the outside.

What to Ask For Before Choosing Impact Windows

Ask for documentation for each product you consider. Code R. 61G20-3.005. Code R. 61G20-3.005.

Request the missile test results, the cyclic pressure results, and the design pressure rating. In Miami-Dade County, ask for the product’s Notice of Acceptance. Miami-Dade’s product approval page explains how building-envelope products are reviewed.

Replacement rules can also simplify a project. Installation can follow the manufacturer’s instructions for the wind zone, and the window design pressure rating is one detail to review with the project team.

Contact us to schedule a free first consultation (confidential, with no obligation to continue) and talk through the costs of your project. Check glass type, frame material, operating style, and listed ratings for each opening. Ask how the crew will sequence the work around the rest of the home.

Plan Your Partial Replacement With ASP Superhome

You may have standard windows in some rooms and want impact protection on specific openings. You may also be deciding which windows to change now and which to change later. Your opening list is the right place to start.

Send us the list and request a quote. We’ll review the openings, present product options for each one, and provide a written quote you can compare. Our first consultation is free, confidential, and comes with no obligation to continue (Spanish: consulta inicial gratuita, confidencial y sin compromiso). You can start by sharing your list at request a quote.

Quick Answers