== == * All three of these manufacturers make a very high-quality product. The fiberglass shell is not the important decision; the installer is the big decision. Spend a lot of time researching and checking out the installation company. == == * This is a difficult question to answer considering most people will have only one experience with a manufacturer. All the companies listed seem to make good pools (I did exhaustive research, visited 3 different companies in 3 states). However, I too have a pool from Midwest Fiberglass Pools and the overall experience was terrific.
Be diligent with your research, work only with reputable contractors, and be patient -- it will take longer and cost you more than you expected. == ==
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My understanding is that Trilogy pools are built with a layer of gelcoat, a moisture barrier of vinyl ester and sprayed chopped fiberglass, general purpose resin and a layer of woven roving fiberglass fabric saturated with general purpose resin with sandwich core reinforcement.
Aloha's pools are built with quite a lot of TLC, as the head of the company is a former "Top Gun" Navy figher pilot. They use a labor intensive hand lay-up process incorporating marine grade gel coat, a moisture barrier of chopped glass and 100% vinyl ester (no blends, fillers, extenders or redrummed materials) and many layers of multi-directional, hand-laid, woven fiberglass fabric, chopped strand mat, carbon fiber reinforcement at key stress points as well as aerospace grade structural honeycomb on select flat walls.
Trilogy offers a "limited lifetime" structural warranty. Aloha offers a straight 75-year structural warranty.
Neither. The best in the USA is San Juan, they last longer than any other fiberglass pool before needing resurfacing (min. 27 years). Second best is Viking, which lasts about 20 years before needing help. Good luck - Bill