Just as a Fiberglass Yacht will oxidize over time, and if not properly maintained, the yacht will eventually begin to crack and leak water into the boat. As the oxidation continues to occur and the moisture content continues to increase from the exterior of the shelter, mold and mildew will continue to grow on the exterior surface of the Fiberglass Shelter, thus continuing the decomposistion of the Fiberglass Tornado Shelter. Fiberglass when exposed not only to UV, but constant moisture, acidic and basic soils and the ground pressure all aide in the oxidation and degredation of the exterior of the unit, when it is installed into the ground. Therefore, any Shelter manufacturer or dealer who stores their Fiberglass Units outside, only demonstrate their ignorance about their own products and the materials.įiberglass shelters rapidly degrading in the Sun's UV rays.Īs many boat manufacturers will tell you, even high dollar fishing boats are prone to deterioration and or even "fiberglass rot". Fiberglass also breaks down rapidly when exposed to UV for any extended periods of time.
Fiberglass Tornado Sheltersįiberglass exhibits poor physical properties and resistance to many chemicals and solvents, many of these are commonly used around the house and yard. Polyethylene is not only one of the most durable, long lasting materials known to man, it is also one of the most chemically resistant materials! Common chemicals such as lawn fertilizers, plant foods, weed killers, even gasoline and paint thinners are all common chemicals that will attack and break down inferior Shelter construction materials such as Fiberglass (FRP). The Granger ISS is manufactured from Polyethylene, more commonly known as plastic. No anchoring required for typical installations!.3 point locking system for extra security!.Gas assisted shock for easy door opening & closing.Lifetime warranty against cracking, leaking and floating!.Battery operated LED lighting system included!.Articulating Handrails to assist entry to Storm Shelter.3 Step Molded Entrance (Not a Ladder Style Entrance!).Double Wall, 1/2" thick (each wall) Polymer Construction.FEMA 320 specification exceeding Storm Shelter door.Scroll over any of ther underlined features to see the Tornado Shelter feature pop up The Granger ISS Tornado Shelter has industry leading features that no other Stom Shelter has including:
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