The Pros and Cons of Choosing a Fibreglass Balcony for Your Home

By Editorial Team

Updated on June 16, 2025

Brick facade of a residential building with white balcony and symmetrical windows under clear blue sky

Balcony decking is as abundant as it is diverse. While wood ranks amongst the top favourites, fibreglass isn’t far behind, quickly gaining popularity. 

Naturally, fibreglass balconies aren’t for everyone. Luckily, we’re here to outline the advantages and downsides of using this material on an outdoor structure. 

Advantages of a Fibreglass Balcony

Balcon Expert’s Dave Dufour mentioned this material's top perks: its low maintenance, resistance, and service life spanning 20-25 years.  

Modern fiberglass balcony with black metal railing

Source : RenoQuotes

Wide Array of Models and Colours

From square one, note that there are several fibreglass balcony models, making it a universally appealing choice. Furthermore, this material retails in a wide array of colours. 

On that note, keep in mind that you can also opt for a granite-like finish, which could appeal to those who like a more modern look. Based on your needs, you can also choose the level of adhesivity you’d like your balcony surface to possess for more or less smooth flooring. 

Low Maintenance

Those who opt for a fibreglass balcony very much appreciate that they don’t need to paint it repeatedly over the course of its service life. For wood enthusiasts, note that numerous companies offer faux wood fibreglass flooring. As such, you can benefit from the look of the material while dodging the sheer amount of maintenance that comes with it. 

Moreover, fibreglass is insect-resistant, which is also a contributing factor to its 20 or so-year lifespan. 

Highly Resistant

Furthermore, since fibreglass is robust, it can withstand almost all weather conditions. Besides, this material offers unparalleled protection against freeze, fire, corrosion, and ultraviolet rays. Therefore, even prolonged exposure to sunlight won’t affect its shape or colour. Fibreglass is also completely waterproof, meaning you can set up a makeshift storage unit beneath your balcony, shielding the space from rain, snow, and wind. 

Easy Installation

Another perk in its favour: A fibreglass balcony is especially easy to install. Since the balcony comes as a single unit, there aren’t numerous pieces to assemble to make it whole. 

It’s also important to note that fibreglass is eco-friendly since it’s 100% recyclable. Using this type of material for construction projects limits its environmental impact. 

Worth the Money

Lastly, keep in mind that a fibreglass balcony has an outstanding value for money factor. Although it’s typically a bit more expensive than a treated lumber balcony, its service life is longer, making it a more valuable long-term choice. Dufour estimated its cost at $15/sq.ft. 

Downsides of a Fibreglass Balcony

Now that we’ve gone over the surprising benefits of fibreglass balconies, we have to outline other factors to consider.

Modern balcony with black metal railing and view of a wooded garden at sunset

Source : RenoQuotes

Its Weight

Albeit fibreglass is relatively lightweight, it’s still heavier than most of its wood or aluminum counterparts. Due to the load discrepancy, not all structures can accommodate this type of balcony since the underlying structure must be capable of bearing the additional weight from the fibreglass. 

Winter Hazards and Summer Discomforts

Even with an elevated adhesivity level during wintertime, a hefty amount of snow will render the surface slippery and likely cause falls. Therefore, it’s advised to spread sand or salt on the balcony’s surface during winter. 

During summertime, if your fibreglass balcony is exposed to excessive sunlight, steer clear of dark colours, as it’ll attract more heat. When exposed to sunshine, its composition resembles metal, which can render the surface extremely warm, thus potentially uncomfortable. 

Stain-Prone Surface

Since this material can stain from different substances lingering on its surface for extended periods, shifting around any items on the balcony’s flooring is best. Also, beware of metallic objects, as they can quickly stain fibreglass decking. 

Fallouts from exposure to the outdoors

While fibreglass is impermeable when faced with almost all hazardous elements found outdoors, it may be vulnerable to mould. Let it also be said that it’s subject to scratching, bumps, and nicks if not cared for properly. Intense heat exposure can also, over the long run, cause the fibreglass to contract, resulting in surface cracks.

How to Clean and Repair a Fibreglass Balcony

Small modern balcony with gray railing and potted green plant in front of a glass window

Source : RenoQuotes

As far as maintenance goes, to preserve a fibreglass balcony, note that it doesn’t require any specific care to keep it looking new other than a good wipe-down with water and soap. Scrub it down with a soft-bristled brush. Using a wire brush is advised against, as the metal bristles scrubbing against the fibreglass surface can lead to rusting. 

If you notice any cracks, regardless of their cause, repair them as soon as possible by filling the gaps with a tow fibre or wads. If water infiltrates the structure, it could lead to additional fissures and potentially result in the complete shattering of the balcony. 

Real estate project developers often include fibreglass balconies in their condo tower designs since they’re durable, cheap in terms of maintenance, and budget-friendly, especially when building numerous balconies. 

Pros 

Cons

Available in a lot of different modelsLightweightAvailable in a wide array of coloursVery robustIts surface doesn’t require a coat of paintInsect-, freeze-, fire-, corrosion-, and UV ray-resistantGreat value for money

Heavier than wood (doesn’t suit all structures)Mould-proneIt may be slippery when snow-coveredDark-coloured surfaces can get quite warmMay crack under extended sunlight exposureWhen cracked, it must be repaired immediately

FAQ

Can you paint a fibreglass balcony?

Yes, you can. For a fibreglass balcony, it’s recommended to use epoxy or polyurethane paint, as both offer excellent adhesion and strong weather resistance. Before applying the paint, the surface should be thoroughly cleaned and sanded to ensure good adhesion. These types of paint are ideal for outdoor surfaces exposed to wear and moisture.

What is the life expectancy of a fibreglass balcony?

The lifespan of a fibreglass balcony is about 20 to 25 years.


Get 3 free quotes for your project!

Submit a project and get 3 free quotes!

Looking for something else?


Related articles

The latest industry news, interviews, technologies, and resources.

6 min read

Editorial Team

07 Nov 2023

How to Paint Parking Lot Lines According to Regulations

Are you the proud owner or manager of a condo tower, institution, or business, and are mandated to create a safe parking space? Your priorities are thus to maximize the available space while still complying with the established regulations as well as the peculiar needs of users. Whether you intend on marking the area yourself or hiring a specialist in the matter, it’s still important to follow some specific guidelines!

6 min read

Editorial Team

07 Nov 2023

How to install a window air conditioner

It can’t be denied that the summer season is enjoyable for almost everyone, with hot days and warm nights that can finally be spent outside. But sometimes, the temperatures reach a peak and joy slowly moves towards discomfort. Luckily, technology has allowed for the air conditioner.

Exterior renovations
4 min read

Léa Plourde-Archer

07 Nov 2023

Ceramic Flooring in a Home: Pros and Cons | Renovation Quotes

Ceramic flooring holds numerous advantages. In addition to being resistant and quite durable, it requires very little maintenance and can considerably increase the value of a house. It can be used as a flooring surface, as well as a wall covering, namely in the bathroom.

Renovation tips
4 min read

Editorial Team

07 Nov 2023

How To Properly Secure Furniture and Childproof Your Home

Children are curious by nature, and although this curiosity can lead them to knowledge and exploration, it can also get them into some sticky situations. As little bundles of energy, children are naturally bound to bounce around their bedrooms and other rooms alike.

7 min read

Editorial Team

10 May 2024

Fixed Awnings for Terraces: Make the Most of Your Outdoor Space

A fixed terrace awning can transform the outdoor space of your home into a true haven of peace by shielding you from prying eyes. This guide will help you better understand the various types of awnings, as well as their advantages and disadvantages. Whether retractable, permanent, or suitable for all four seasons, an awning can be a valuable addition to your home, especially in Quebec where seasons can be extreme. Ready for an outdoor transformation? Read on!

Exterior renovations

Looking for a contractor?

Submit a project and get 3 free quotes now!