Frequently Asked Questions - Patio Doors

Patio Doors FAQ's

How do bifold doors compare to sliding glass doors?

Bifold doors provide larger openings and create a seamless connection to outdoor spaces, while sliding glass doors are often more compact and require less maintenance.

What is a left vs. right venting sliding patio door?

Viewing from outside the home, a right-venting sliding patio door means it will slide open from left to right, and a left-venting sliding patio door means it will slide open from right to left.

What is the strongest patio door material?

Pella's fiberglass is the strongest material for patio doors.⁶¹ On average, it is 10x stronger than a leading wood/plastic composite, 9x stronger than vinyl, 5x stronger than wood and 2x stronger than aluminum as displayed in tensile and 3-point bend tests.⁶¹ Pella Impervia sliding patio doors come with hardware to help you feel safe. Multiple locking mechanisms and the Secure Vent Lock ensure added security in both the closed and venting position. For superior strength, shop Pella Impervia patio doors.

Where do sliding glass doors work best?

Sliding glass doors work great in tight spaces and areas where your furniture is close to the door. Sliding patio doors, unlike hinged doors, require no additional space to operate.

What makes fiberglass a good material for patio doors?

Fiberglass patio doors are extremely durable and designed to withstand extreme temperatures or climates and everyday life. Pella’s proprietary fiberglass is the strongest patio door material, delivering lasting durability.⁶¹ It resists dents, bends and breaks to help keep your door beautiful with less maintenance.

What's the difference between French doors and sliding doors?

French doors are hinged at the side and can either swing in or out, depending on what works best for the space. They are a traditional choice that adds an elegant feel to the home. Sliding patio doors glide open on a track, meaning they require no additional space to operate. These doors add a contemporary touch to the home. Learn more differences between hinged and sliding patio doors.

What is the most energy efficient sliding patio door?

Pella offers patio doors with exceptional energy efficiency that meet or exceed ENERGY STAR® standards in all 50 states.¹ Our patio doors are offered with a variety of different glass options to meet the energy efficiency needs of different regions. Therefore, the answer to this question is dependent on where you live. Please reach out to a Pella expert if you'd like more information.

How do you measure a sliding patio door for replacement?

Measure the width and height of your existing patio door with a tape measure. Follow these instructions to ensure you take accurate patio door measurements.

Are vinyl patio doors durable?

Yes, vinyl patio doors are easy to care for and look great for years. Pella’s unique vinyl formula is performance-tested for excellent weathering, durability and color retention. Multi-chambered frames add strength and durability while helping to prevent warping, sagging and bowing.

What is a new construction patio door?

A new construction patio door is one that's installed in a new building or when all siding and trim has been removed. New construction patio doors require studs to be exposed so that the door can be attached directly to the frames.

What product lines are made of fiberglass?

Pella® Impervia® is the only product line made of our proprietary fiberglass. This product line offers windows and sliding patio doors. There are also many front entry doors available in fiberglass.

How do bifold doors work?

Bifold patio doors are made up of three or more panels that are connected with hinges on the sides to fold open and closed like an accordion. When bifold patio doors are closed, they create the look of a wall of glass, and when they’re open, they stack neatly on top of each other.

Can French doors be locked?

Yes, French doors can be locked with the included hardware. Optional multi-point locks can further increase the security in your home.

How do French doors open?

French doors are hinged at the side and swing open and closed. Sliding French patio doors are another option, and they open and close by sliding along a track.

Why do they call them French Doors?

French doors got their name because they originated in France as a very popular door style, dating back hundreds of years. Hinged doors were created to allow more light into a room before electricity was invented.

If I install the product myself does it void the warranty?

No, if Pella’s installation instructions are followed, your product is covered by the product warranty. See our installation instructions here.

Are French doors a good alternative to sliding patio doors?

Yes, French doors are a great option if you’re looking for classic charm. They offer a more traditional aesthetic compared to sliding doors.

What is a retractable screen on a sliding patio door?

Retractable screens roll side to side on sliding patio doors. Self-storing, they are tucked away when not in use and eliminate seasonal screen storage. Retractable screens are available on Pella Reserve - Traditional, Pella Reserve - Contemporary and Lifestyle Series patio doors.

What are the benefits of wood patio doors?

Wood patio doors offer beauty, warmth and design flexibility, all while providing exceptional energy efficiency. They are also very durable and highly customizable.

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