Fiberglass vs Plastic Pergolas
Both fiberglass and plastic pergolas offer the benefit of a low maintenance outdoor structure. There are two types of plastic pergolas currently available, the first and most common is constucted from vinyl(also known as PVC). The second type of plastic pergola is constructed from a material similar to composite decking(Azek or Palite). These are low maintenance materials, however they differ significantly in terms of quality, lifetime and finish. Below is a detailed comparision of these materials.
Fiberglass
* Maintenance free
* Available in any color
* Structural material with free-spans of up to 20'
* Will not mildew, mold or yellow
* One piece CNC rafter tails
Vinyl
* Low maintenance but will mildew and yellow over time
* Non-structural vinyl tubes
* Pressure treated lumber is inserted into the vinyl and can sag, twist and rot
* Available in a limited number of colors
* Snap-on rafter tails
Azek
* Requires bi-annual painting
* Yellows and mildews over time
* Sheets of Azek are glued to either aluminum or lumber for structural support
* Azek will delaminate and fall of over time
* High cost of ownership
Comparison Chart
| Fiberglass | PVC(Vinyl fencing) | C-PVC(Azek) | |
|---|---|---|---|
| Maintenance: | Maintenance free. | Maintenance free. Will yellow & mildew. | Requires bi-annual painting. Will yellow & mildew. |
| Finish: | Available in any color | Limited color options | Limited color options |
| Durability: | Hard industrial coatings. Durable cast fiberglass column bases. | Scratches easily. Plastic post bases break easily | Azek delaminates and fall off over time |
| Lifespan: | Designed to last a minimum of 15 years | Minimum of 5 years | Minimum of 5 years |
| Structural Properties: | Structural fiberglass pultrusions will not sag or warp. | Structural pressure treated core. Prone to sagging and warping. | Structural pressure treated core. Prone to sagging and warping. |
Azek Pergola Fail
Mildew
This Azek pergola was poorly constructed. It experienced yellowing, excessive rot and sagging as a result of the manufacturer cutting corners.
Beams
This what the main structural support beam looked like when the Azek fell off and the remainder was removed.
Baldwin to the rescue!
The client's contractor reached out to us and we replaced the existing structure with a fiberglass pergola that will last for years to come.
Testimonials
Dan HarmonBefore I made my purchase decision, I did get a quote from a local, highly-regarded pergola constructor. Baldwin's price was lower, and from what I've seen, I think the quality is higher. In summary, I'm pleased with how the pergola came out, and satisfied that I choose Baldwin as my supplier.
David PetersonI am very happy with your product and now know where to go when I need a pergola. It was a pleasure speaking with you and I wish you much success with your growing business.
Elizabeth CarneyDear Max, Thanks again. We love the pergola. It's beautiful. We hope everything goes well for you.
Duane DottaWe are extremely pleased. If there is any picture that I haven't taken and you need one a special way, Don't hesitate to call or write. Max made everything easy for us, make sure he sees these pictures.
Becky HansenThanks Max. I'm glad you like the photos. We enjoyed working with you and your company even though it was long distance! We absolutely love our new outside room and so do neighbors walking by. In fact, I think I'm heading back outside now to enjoy the stars under our pergola. Take care and thanks for an outstanding product.
Minh VuThere is still landscaping to do but I thought you would like to see the completed pergola on location. The quality and packing were quite excellent and I've received rave reviews about the pergola from neighbors.
John EndicottOne of these days, I may be back in touch about a second pergola for the patio in front of my house. I am quite happy with the one you built here, which we use a lot in the summer.
Jeff RiddellAs a cabinetmaker and woodworker, I send you kudos on your system, the communication that we've had, the quality of the product. It's a pretty simple kit that arrived and it installs just about as easily as your website suggests. On a personal level, it's really cool to make connections with other people that have the same sense of pride in their work. This stuff is as much about service as it is product.
Susan HallHey Max, I thought you would enjoy these. Feel free to use them. Anytime you have someone in the area that would like to see a pergola. I am happy to show them ours. Thanks so much it is absolutely beautiful!!! I just added it to HGTV. I am sending you a link so you can see. Enjoy!
Joe and Terry MitlyngI have been meaning to send you these pictures of our pergola, showing the Shade Tree awnings, for over a year now. The pictures were taken in September this year, about a year after the pergola was first assembled. My brother and I had just finished washing the pergola with Murphy Oil Soap, and it had that wonderful, like new, honey glow.
"First, man defines his architecture. Forever after, his architecture defines him."
It's been a tremendous honor to design and build these fantastic structures for our customers. We look forward to upcoming challenges and the beauty they bless us with.
© 2026 Baldwin Pergolas, Baldwin Lawn Furniture.