Answers to common questions about measuring, seal selection
How Do I Measure RV Window Glass Thickness?
How Do I Choose the Correct RV Window Seal Size?
How to Measure Window Glass Thickness ?
RV dual-pane window thickness varies.
- Measure the total thickness of the dual-pane unit.
- Common thicknesses are 7/16" (with 3/16" spacer seal) and 1/2" (with 1/4" spacer seal).
- If you’re unsure, open a slider window and measure the overall glass thickness.
- For accurate measurements, use a metal tape measure and record to the nearest 1/16".
How Do I Choose the Correct RV Window Seal Size?
How Do I Choose the Correct RV Window Seal Size?
How to Choose the Correct Seal Size ?
The seal size must match your window frame channel. If it doesn’t, the kit will not fit properly.
Common seal sizes we offer:
- 3/16"
- 1/4"
If you are unsure of your seal size, email us your Year, Make, Model, and a few photos of your window — we’ll help you choose the correct size before you order.
Common Window Questions
Common RV Window Questions
**What causes RV windows to fog up?**
Fogging happens when the internal seal between the glass panes fails and lets moisture enter the air space.
**Will this kit fix etched glass?**
No — etched or scratched glass must be replaced, not just resealed.
**Do I have to remove the window from the RV to measure?**
Often No — measuring a Slider glass directly is the most accurate method.
**How long does DIY installation take?**
Most first-time DIY installs take 1–2 days for one window (your first may take longer). Next one will be much faster.
**Will a kit prevent fogging in the future?**
A correctly measured and installed kit will restore clarity and improve insulation, but long-term performance also depends on frame condition and installation care.
How do I know the Amount of Seal I need ?
How do I know the Amount of Seal I need ?
Measure the perimeter of each of the window sections you want to rebuild including the radius corners to determine if the kit you order has the correct amount of seal materials needed.
When to Contact Us
How do I know the Amount of Seal I need ?
TECHNICAL SEAL MATERIAL BLOCK
Need Help Before Ordering?
If you’re unsure about measurement, seal size, or how your window is configured, please contact us first.
We’ll help you get it right — send Year, Make, Model, measurements, and photos of your window before ordering.
TECHNICAL SEAL MATERIAL BLOCK
How do I know the Amount of Seal I need ?
TECHNICAL SEAL MATERIAL BLOCK
Our seals are designed specifically for RV window applications and selected for durability when installed correctly.