New Construction Windows vs Replacement Windows: What’s Better?


Newly built home with new windows lit up at twilight

When thinking about making your home more appealing and more energy-efficient, everyone knows that you need to deal with windows first. 

It would help if you had the right windows to keep your home cool, your bills low, and your house visually appealing. If you don’t have someone to recommend a particular brand or share their experience on all-about windows, you may feel overwhelmed with all information available. However, you should know that it’s not that scary as it sounds and that everything windows-related is actually pretty straightforward. 

When it comes to buying windows for your home, all you have to do is to choose between two different types of windows: new construction windows or replacement windows

They are mutually exclusive, except in some infrequent situations. To know how to choose between these two, you need to know what their benefits are. Let’s master the difference. 

When You Should Use New Construction Windows

Nail On Frame
New Construction

New construction windows are mandatory when it comes to building a new house. The nailing fin is set back from the outer edge of the window frame so that the exterior wall siding can be installed after the window is put into place. 

The purpose of nailing fins is to secure the window to the wall sheathing and hold it in place while the shims and screws are being installed.

. You should opt for new construction windows when:

  • You are building a home
  • If you need a window addition 
  • If this is a severely damaged wall that needs much repair work 

When You Should Use Replacement Windows

Retro Fit Frame
Retro-Fit

Replacement windows should be used to replace old windows in an existing home. They are designed to be installed from the inside of the home. This avoids the removal of any exterior elements and allows for a quick, easy and less invasive installation. 

You should use replacement windows if:

  • This is a replacement of the existing window
  • This isn’t a new building or a building under construction 

The Verdict

As the name suggests, new construction windows should be used when building new home or home additions while Replacement windows are made to replace old windows. 

At ClearMax®, we offer both options at an affordable price and maximum energy efficiency. Use our web app below to build your windows, get instant pricing and place an order. If you feel like you need input from a window expert, drop us a line and we will reach out shortly.

Customize Windows

1 2 3 4 5 6 7

Your configuration

selected product

NEEDING HELP?

Call +1 (858) 220 1179
Viewed from OUTSIDE looking IN.
Not representation of manufactured products.

Select window type

Select window opening system

Select grid style


Select grid type

Select frame type


Select frame color

Select glass type


Select Glass Transparency

Select width and height

Width must be at least 10 Inches

Width must be no more than 72 Inches


Height must be at least 10 Inches

Height must be no more than 72 Inches

iPlease enter a valid window height and width

Quantity of Window

i Please select an option

Need a special Window? Order by phone.

Call us on (858) 220-1179 (10am - 5pm PST)

Have a question? Send us an email

Free Pickup From our showroom in San Diego

Online purchases are supplied by JELD-WEN

All windows are made out of Vinyl

Read our shipping & returns policy

  • 5 star rating Clear max was the best choice we could have made as we had to get or doors replaced and also... read more

    Roger P. 7/01/2021

    5 star rating Wonderful job done by this company as we needed some custom windows installed to our home along with some customer... read more

    Samantha M. 6/16/2021
  • 5 star rating Just love the experience with ClearMax, i looked for a fast shipping service and found them, submitted a order directly... read more

    Sapiri M. 6/15/2021

    5 star rating I reached out to ClearMax and spoke with Josh to get quotes to upgrade my windows at my rental property.... read more

    Johnny L. 5/03/2021
  • 5 star rating Needed to replace old 70s windows. Awesome to work with from start to finesh. Estimator came out, measured everything explained... read more

    Yahav C. 3/19/2021

    5 star rating MANY THANKS to Danielle, Josh, Samir (Sam), and the entire ClearMax team for taking a nightmare of a situation --... read more

    Leigh P. 2/26/2021