Single Hung Impact Windows
Single hung impact windows have a fixed upper sash and a lower sash that slides up to open. Storm Pro Window and Door builds each one to size with laminated impact glass, a reinforced vinyl or aluminum frame, and a stainless steel coil balance system, then installs it with our own crews.
How Does a Single Hung Window Work?
The top sash stays in place while the bottom sash lifts straight up, then lowers and locks to close. With one moving sash, there are fewer parts to adjust or wear.
Storm Pro’s single hung windows use a stainless steel coil balance system. The coil balances counter the weight of the sash, so heavy laminated glass lifts smoothly and stays where you set it. Stainless steel also holds up to salt air near the coast.
Choosing Single Hung Impact Windows
Where a single hung fits best, what it takes to meet bedroom egress, and the options you can choose for each opening.
Where Do Single Hung Impact Windows Work Best?
Single hung impact windows fit most rectangular openings that are taller than they are wide. They are a strong choice for:
They are also one of the more budget-friendly operable styles, which makes them a common pick for whole-home replacements.
Bedrooms
Where a tall opening can help meet emergency escape rules
Living and family rooms
Set in pairs or groups of three
Hallways and home offices
Where you want airflow without a crank or a swing
Ventilation and Bedroom Egress
A single hung opens about half its height, which is enough airflow for most rooms.
The Florida Building Code requires sleeping rooms to have an emergency escape opening that meets minimum clear-opening area, height, width, and sill height. A tall single hung often works. A wide, short opening may be better served by a horizontal slider or casement. We check every bedroom opening during measurement, and the permit confirms the requirement. See our permits and building code page.
- Opens about half its height for airflow
- Tall single hungs often meet bedroom egress
- Wide, short openings may suit a slider or casement
- Every bedroom opening checked at measurement
Single Hung Options
Frames
Vinyl or aluminum
Glass
Laminated impact glass, with Low-E and argon available (see energy efficient impact windows)
Privacy
Tinted or obscure glass for baths and street-facing rooms
Grids
Classic applied, between-the-glass, or double applied
Colors
Custom colors and finishes to match your trim
Sizes
Custom built to each opening
Installation and Care
How our in-house crew installs single hung impact windows, and how to keep them sliding smoothly for years.
How Does Storm Pro Install Single Hung Impact Windows?
Each window is ordered to your measured opening and set to the design pressure that opening requires. Our in-house crew removes the old unit, inspects the framing, and anchors the new window per its product approval. We will never install into rotted or structurally unsound framing.
We secure the permit, protect your floors, recycle old units when possible, and clean up before we leave. See our impact window installation process.
- Ordered to your measured opening
- Set to the design pressure the opening requires
- Framing inspected before the new window goes in
- Old units recycled when possible
How Do You Care for a Single Hung Impact Window?
- Vacuum the sill track and keep weep holes clear so rainwater drains.
- Clean glass with a mild, non-abrasive cleaner and a soft cloth.
- Rinse the frame and hardware occasionally near salt spray.
- If your model has a tilt-in sash, tilt it in to clean the outside glass.
What Pairs Well With Single Hung Windows?
A popular layout is a large picture window flanked by two single hungs: a wide view in the center and airflow on the sides. Single hungs can also be topped with a half round from our architectural impact windows line to add height to a front elevation.
Frequently Asked Questions
What is the difference between single hung and double hung windows?
A single hung window has one operable sash, the bottom one, while the top sash is fixed. A double hung has two operable sashes. Single hung windows have fewer moving parts and cost a little less. If you want both sashes to open for easier cleaning or top-down airflow, see our double hung impact windows.
What does the stainless steel coil balance system do?
It uses stainless steel springs to counter the weight of the lower sash, so heavy laminated glass lifts smoothly and stays open at the height you choose instead of drifting closed. Stainless steel also resists the corrosion salt air can cause near the coast.
Are single hung impact windows good for bedrooms?
Often, yes. Their height can help a bedroom opening meet emergency escape requirements under the Florida Building Code. Whether a specific window qualifies depends on its clear opening size and sill height, so we check each bedroom during measurement and confirm through the permit.
Are single hung impact windows less expensive than other styles?
They are generally one of the more budget-friendly operable styles because of their simple design. Final cost depends on size, frame, design pressure, and glass. See our impact window cost guide.
How do I verify a window's impact rating?
Ask for the Florida Product Approval or Miami-Dade NOA number, then look it up on the Florida Building Commission website. Storm Pro lists the approval for each window on your permit paperwork.