After having been in the swimming pool industry for almost 10 years now, it never ceases to amaze me some silly 'myths' that have been circulated regarding fiberglass pools.

A customer I've been working with recently received quite a few quotes from various pool builders. This gentleman lives in Northern Maryland, almost in Delaware, and he has been told by more than one builder that wholesale rtm mat for sale pools are not a good choice for northern regions of the United States and other colder climates.

This being said, I'd like to stress the following statement:

Anyone who tells you a composite will not work in colder climates is using fear tactics as a method for you to choose another type of pool. In other words, this person is dishonest and doesn't merit your business. 
You see, whenever I've confronted a contractor who has made such a statement, they've never been able to scientifically prove this 'phenomenon' whatsoever. Let me just state a few simple facts regarding this 'cold climate' nonsense.

1. Fiberglass Pools have become extremely popular in Canada (The last I checked, Canada was pretty cold). 
2. As water-carrying vessels, swimming pools, whether they are concrete or fiberglass, have the same ability to be 'moved' by elements of nature. This is why such features as hydrostatic release valves, French drains, cantilevered decks, etc are commonly installed in said pools. 
3. Freezing water (in the pool itself) also does not affect fiberglass pools. (Pipes must be winterized)

So the moral of this little article is:

If any pool guy has the nerve to use such a false statement like 'cold climates' to persuade you, then you can happily take them off your list of candidates!