Fiberglass vs. concrete vs. vinyl pools in upstate New York

Side by side

Why we build with fiberglass

• Flexes slightly with freeze-thaw instead of cracking
• Fewer chemicals and less brushing because the surface resists algae
• Faster install, so you lose less of the summer
• Barrier Reef shells come with a lifetime structural warranty

Fiberglass, explained simply

A fiberglass pool is built in a factory as one piece, shipped on a truck and set into the hole with a crane. Because it arrives finished, the install takes weeks instead of months. The inside is a smooth gelcoat, which feels nice on feet and doesn't give algae much to hold onto.

The trade-off is shape. You choose from set models, and shipping limits the width to roughly 16 feet. For most backyards that's plenty: models go from small plunge pools to around 40 feet long, with tanning ledges, benches, spas and sun shelves.

Concrete (gunite)

Concrete pools are built on site, so they can be any shape or size. They also take the longest to build and cost the most over time. The plaster surface is rough, holds onto algae more easily and needs resurfacing every so often. In freeze-thaw climates concrete needs careful installation and care to avoid cracking.

Vinyl liner

Vinyl pools usually cost the least upfront. A vinyl liner sits inside walls of steel or polymer. The catch is the liner: it can be cut by sharp toys or pets, and it usually needs replacing every 8–12 years, which is a real expense. The surface is soft and comfortable.

Cost over 20 years

When you add up the upfront price plus chemicals, energy, liner replacements or resurfacing, fiberglass often ends up costing less to own than the other two over the long run, even though it isn't the cheapest on day one. That's the main reason fiberglass keeps growing in the Northeast.

Common questions