
If you want to replace your windows, it might feel like a daunting task, especially if you own a mobile or manufactured home. You’re not alone in thinking you may measure wrong. Many mobile homeowners have the same concerns, but here’s the good news: the process isn’t as hard as it seems!
This guide will walk you through the right way to measure windows for replacement. By the end, you’ll feel confident and excited to upgrade your home.
Why Accurate Window Measurements Matter
When you measure your windows, you have a much smoother replacement process. This way, you avoid errors that could lead to extra expenses or inconvenience during installation.
Achieve a Seamless Fit
Even a small mistake can create gaps that reduce how well the window functions and appears. Measuring your windows guarantees that the replacement will align seamlessly with the frame.
Avoid Costly Mistakes
Custom windows can cost a lot. If you don’t measure correctly, you might end up with a product that doesn’t fit, which wastes your time, money, and effort.
Tools You’ll Need
Before you start measuring, gather the tools you’ll use. Having the right equipment on hand makes the process easier.
- A tape measure, preferably in inches
- A pencil and a notepad
- A step stool or ladder
- A level
Why Using the Right Tools Matters
Using the right tools helps you measure with more accuracy. For instance, a loose tape measure won’t give you the right numbers, and an unstable ladder makes it harder to reach tall areas safely.
Step 1: Measure the Width

Start by measuring the width of your window. This involves measuring at three points to account for inconsistencies in the frame.
- From the inside of the left jamb to the inside of the right jamb
- Across the middle of the frame, the same process
- Across the bottom, from left to right, the same process
Always record the smallest of these three numbers. This guarantees the replacement window fits, even if the frame isn’t perfectly square.
Over time, mobile home window frames can warp or shift because of weather or environmental changes. Measuring three points accounts for these irregularities and avoids sizing issues.
Step 2: Measuring the Height
Measuring your window’s height is just as important as its width. Use the same three-point method to get the most accurate number.
- Measure from the top of the frame to the bottom sill on the left side
- Measure down the center of the frame
- Repeat the process on the right side of the frame
Write down the smallest number as your final height measurement. Uneven windowsills or trim around the frame can throw off your measurements. Pay close attention to these details to avoid over- or underestimating the height.
Considerations for Mobile Homes
Measuring windows for replacement the right way in mobile homes poses unique challenges. It’s important to account for specifics, from varying window types to differences in frame materials, before moving forward.
Understanding Mobile Home Window Types
Unlike traditional homes, mobile and manufactured homes feature non-standard window sizes, such as flush-mount or lap-siding windows. Identify your window type so you know you’re shopping for compatible replacement windows.
Frame Depth and Material
Mobile home walls are typically thinner than those in site-built homes. This means you’ll need a window that matches the shallow depth of the existing frame.
Retrofit vs. New Construction Windows

There are two main types of windows to choose from. When you understand the difference between retrofit and new construction windows, you can decide what’s best based on your needs and the scope of your project.
What’s the Difference?
Retrofit windows fit directly into the existing window frame, which makes them ideal for quick and straightforward updates. These windows are particularly useful when you want to replace old windows without altering the surrounding structure.
New construction windows come with a nail flange that attaches the window to the wall studs. Installing these windows involves removing siding or other parts of the wall, making the process more time-consuming and requiring structural adjustments.
Choosing What’s Right for You
For most mobile home windows, retrofit is the better choice. They typically have a faster installation process and easily work with the challenges of mobile homes.
Sealing and Insulating
After measuring and choosing your window, sealing and insulating are the next steps. This can improve energy efficiency and prevent potential issues like water leaks or drafts.
Why Sealing Your Window Matters
When you don’t seal your windows correctly, all the effort you put into measuring and installing will go to waste. Gaps around the frame allow air to escape, which increases your energy costs and makes your home less comfortable.
Tips for a Secure Seal
Clean the window frame thoroughly to get a tight seal. Dirt and debris can prevent caulk and foam insulation from sticking well to the surface. Once the area is clean, apply the sealant evenly so it adheres and lasts long.
Common Mistakes To Avoid
Even with a solid plan, mistakes can happen. When you are aware of common errors, you can avoid them altogether!
Forgetting To Double-Check
Fumbles in measuring or sealing are easy to make, but just as easy to prevent. Take a few extra minutes to double-check your work. This simple step can save you from buying the wrong window or dealing with poor insulation.
Foregoing Professional Help
Replacing windows in mobile homes is a doable DIY project, but a professional can most likely produce better results. They understand the nuances of mobile home designs and guide you in the right direction.
Final Tips for Ordering the Right Window
There are a few final steps to take before placing your order that can streamline the installation process.
Work With a Specialized Supplier
Mobile homes have unique needs, so working with a supplier who specializes in mobile home windows is a smart choice. These experts can guide you to the perfect fit and answer any questions specific to your situation.
Prepping for Installation
When your new window arrives, clear the area around the frame. Remove curtains, blinds, and any other obstacles to make the installation as easy as possible.
Take the Next Step Toward Better Windows
You can easily replace your windows with this know-how. When you’re ready to take the next step, Mobile Home Outfitters is here to make your window replacement project seamless. Our expert team can give you guidance on measuring, choosing the perfect windows, and installation services. Visit our website or call us today to start your home improvement journey!