Everything Homeowners Need to Know About Their OKNA Windows
Your OKNA windows are designed for long-term durability, energy efficiency, and reliable performance. To help you protect your investment, this guide covers everything you need to know about:
OKNA lifetime warranty coverage
Proper window cleaning and maintenance
How to operate your windows safely
What causes window condensation
Troubleshooting common issues
If you ever need assistance, our team is here to help.
OKNA Lifetime Limited Warranty
OKNA windows include a Lifetime Limited Warranty for residential homeowners. This warranty protects against manufacturing defects and provides long-term peace of mind.
The warranty is transferable once to the next homeowner, helping maintain value if the home is sold.
Frame & Sash Coverage
The vinyl frame and sash components are warranted to remain free from manufacturing defects such as:
Blistering
Peeling
Flaking
Corrosion
Fading
Coverage lasts for as long as you own your home.
Insulated Glass Warranty
OKNA insulated glass units are warranted against seal failure that could cause:
Moisture between panes
Dust or debris between panes
Film formation that obstructs visibility
OKNA glass meets industry standards including:
ASTM C1036
ASTM C1376
ASTM C1172
ASTM C1048
ASTM E2190
Hardware Warranty
Window hardware is covered to remain in good operating condition for the lifetime of the homeowner.
Coastal hardware applications carry a 10-year warranty.
Exterior Paint Coverage
Factory painted window exteriors are covered for 10 years against:
Peeling
Cracking
Blistering
Significant UV discoloration
Important Warranty Conditions
To make a warranty claim:
Notify the dealer within 30 days of noticing the defect
Provide photos of the issue for evaluation
Allow inspection if required
If approved, OKNA may provide replacement parts or product at no cost to the dealer.
The warranty does not cover:
Labor for replacement
Shipping costs
Reinstallation costs
How to Properly Clean Your OKNA Windows
Regular cleaning helps your windows look better and perform longer.
Recommended Cleaning Method
Use a mild solution such as:
Liquid dishwashing detergent
Warm water
A soft cloth
After cleaning, rinse thoroughly with clean water.
Cleaning Products to Avoid
Do not use:
Ammonia
Alcohol
Vinegar
Bleach
Petroleum-based cleaners
Abrasive powders
Steam cleaners
Pressure washers
These products can damage vinyl finishes or laminated surfaces.
How to Clean Double Hung Windows
Many OKNA double hung windows include tilt-in sashes that make cleaning easy from inside your home.
Cleaning the Bottom Sash
Unlock the window
Raise the sash about 3–4 inches
Release the tilt latches
Carefully tilt the sash inward
Clean the glass
Return the sash and lock it into place
Cleaning the Top Sash
Tilt the bottom sash inward first
Pull the top sash down 3–4 inches
Release tilt latches
Tilt the sash inward and clean
Return both sashes to their original positions
Safety Tip: Never lean out of the window or rely on the screen for support.
Cleaning Casement & Slider Windows
Casement Windows
Unlock the window
Crank the sash open to approximately 90 degrees
Clean the exterior glass by reaching between the sash and frame
Slider Windows
Slide one sash to expose the opposite panel
Clean the accessible glass surface
Slide the other sash to clean remaining sections
Removing the sash is not recommended for routine maintenance.
Understanding Window Condensation
Condensation occurs when warm air with moisture touches a cooler glass surface, forming water droplets.
This is a natural result of humidity levels and temperature differences inside and outside your home.
Energy-efficient windows often make condensation more noticeable, because they seal air more effectively.
Recommended Indoor Humidity
Maintain humidity levels between:
30% – 50%
Higher humidity can lead to:
Mold growth
Wood damage
Moisture buildup
Tips to Reduce Condensation
You can reduce condensation by:
Running bathroom and kitchen exhaust fans
Venting clothes dryers outdoors
Increasing air circulation with ceiling fans
Opening window coverings during cold months
Reducing humidifier use
Mini Blinds Between Glass
Some OKNA windows feature built-in mini blinds between glass panes.
Normal Operation
Use the magnetic control to:
Raise and lower the blinds
Adjust the tilt angle
Blinds may require 24–48 hours to acclimate after installation.
If the Blinds Stop Working
The internal magnets may become disengaged.
To reconnect:
Slide the operator to the top of the window
Listen for the first click
Continue sliding until a second click confirms re-engagement
If the Blinds Become Uneven
Raise and lower the blinds several times to allow them to self-level.
Window Opening Control Device (WOCD)
Many OKNA windows include a Window Opening Control Device, a safety feature designed to help protect children and pets.
When activated, the window will open no more than four inches.
To fully open the window, the device must be manually disengaged.
Closing the window automatically reactivates the device.
If the device stops working properly, contact your window dealer for replacement parts.
Routine Window Maintenance Checklist
To protect your windows and maintain warranty coverage, homeowners should:
Inspect caulking and sealants yearly
Keep patio door thresholds clear of debris
Clean laminated windows regularly
Inspect bay and bow windows annually
Address maintenance issues promptly
Regular inspections help prevent long-term damage.
Frequently Asked Questions
Why do my new windows have condensation?
New windows are more airtight than older ones, meaning humidity inside the home may collect on the glass surface instead of escaping outdoors.
How often should windows be cleaned?
Most homeowners should clean windows two to four times per year, depending on environmental conditions.
Can condensation damage windows?
Occasional condensation is normal. However, persistent moisture can damage wood components and lead to mold if humidity is not controlled.
How long do OKNA windows last?
With proper installation and maintenance, OKNA vinyl windows can last 30 years or longer.
Need Help With Your Windows?
If you have questions about warranty coverage, maintenance, or window performance, our team is here to help.
Contact us today for support or service.
