In ground Safe Rooms Features & Comparisons
|When a severe weather emergency intrudes upon an area, safety features and options of safety products sometimes can make the difference between life and death. The Safe Room Storm Shelter by Granger Plastics incorporates numerous safety features that make entrance and exit from the Storm Shelter extremely easy for all members of the family. Small children, senior citizens and even pets can enter and exit the Storm Shelter with a little help from others. The FEMA 320 exceeding aluminum door opens, closes and secures easily in seconds to provide you and your family protection from inclement weather and flying debris. The articulating handrails make entrance even easier as you step in down the molded 3 step entrance. The Granger ISS Storm shelter improves upon other Storm Shelter's design by offering a 3 step molded entrance, rather than a ladder style type of stairway. The molded in circular seating, with carpet and battery operated LED lighting system keep you and your family comfortable and at ease while waiting out the storm or tornado.|
In Ground Safe Room Picture Gallery
In ground Safe Room
In Ground Safe Room Video Gallery
Tornado Shelter Door and Handrails in Action!
See the ease of use to open the door to the In ground Safe Room Tornado Shelter, enter the In ground Safe Room Tornado Shelter and secure the 3 point locking system that secures the door!
FEMA 320 Testing at Texas Tech University
This is the actual footage from Texas Tech University's Wind Research & Engineering Centers FEMA 320 specifications test. See how the Granger ISS, In ground Safe Room Tornado Shelter easily passes the test with its expert engineered Aluminum Door!
Fiberglass Shelter v.s. Polyethylene Shelter
In the video above, see why Polyethylene is far superior over Fiberglass. In the 1960's and 1970's, FRP (Fiberglass) In ground Safe Room Tornado Shelters quickly surfaced after a large number of concrete safe rooms had been manufactured and installed across the United States during the 30's, 40's and 50's. In the early 80's, numerous municipalities and counties across the United States quickly started outlawing the installation of the inferior Fiberglass Material Shelters in various areas, due to the decompisition issues with the In ground Safe Room Tornado Shelters, along with the potential failure of the unit if it was exposed to chemicals, solvents, acids or bases that could leech thru the soil and begin attacking/breaking down the fiberglass rendering the In ground Safe Room Tornado Shelter useless. When purchasing a consumer safety product, do not subject your family to even more danger and liability by putting them in an inferior safety product that could endanger their life versus saving their life! We have more information on the various In ground Safe Room Tornado Shelters below in our features section, to aide consumers in the product selection.
Safe Room Tornado Shelter Manufacturing & Assembly.
The Granger ISS is manufactured from Polyethylene, more commonly known as plastic. 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).
Fiberglass Safe Room Tornado Shelters
Fiberglass exhibits poor physical properties and resistance to many chemicals and solvents, many of these are commonly used around the house and yard. Fiberglass also breaks down rapidly when exposed to UV for any extended periods of time. Therefore, any Shelter manufacturer or dealer who stores their Fiberglass Units outside, only demonstrate their ignorance about their own products and the materials.
As many boat manufacturers will tell you, even high dollar fishing boats are prone to deterioration and or even "fiberglass rot". 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. 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. 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. If it can happen to multi-million dollar boats manufactured by world leaders in the boating and fishing industries, why would it not happen to a Fiberglass Tornado Shelter? If this problem plagues multi-million dollar companies, would it not also plague the guy who's building Tornado Shelters in his barn out back?
The article below comes from leading yacht manufacturer, Arcturos Yachts, explaning why Aluminum Yachts are superior and preferred over Fiberglass yachts.
Fiberglass or FRP is a thermoset plastic. This thermoset plastic material actually has a small amount of the properties of a thermoplastic, such as Polyethylene (PE), Polyvinyl Chloride (PVC) and Polypropylene (PP), but very miniscule in comparison to the actual thermoplastics. Fiberglass as many experts will tell you from the boat and automotive industries, is not only susceptible to UV degradation, but it also will rot and mildew. Many boat marina's and boat dealers will tell you a large complimentary business to their boat sales is the continaul repair and maintenance of the fiberglass hulls of the boats. Even properly stored, Fiberglass is continously susceptible to the elements. Why risk the liability, exposure and years of on going, expensive & labor intensive maintenace headaches to keep a Fiberglass Shelter viable? Less scrupulous Shelter dealers and manufacturers will tell you that Fiberglass is a superior material at a lessened price, only to find out the overrall cost in the end of the Fiberglass is significantly more, by the time you add the additional intial material expenses such as the multiple yards of concrete needed to most other Tornado Shelters, the elevated freight expense and the heightened labor costs. All of this, in addition to the greatly increased amount of maintenance drastically makes the Polyethylene Shelter a better vaule for single family homes.
Steel Safe Room Tornado Shelters
Steel is commonly utilized as a building material for manufacturing Safe Rooms and Tornado Shelters. We all are relatively familiar with steel as a commonplace material, as we all have been exposed to steel bed frames, steel handrails, steel filing cabinets and even that rusting old beast of a car that used to set in your neighbors yard, rusting away right? That was steel! Steel exhibits great physical properties in comparison to other shelter materials such as Fiberglass, however steel has the major issue of rusting that not only makes it very unattractive, but the degredation of the steel during the rusting process deterioriates the physical strength and integrity of the shelter.
Steel Tornado shelters are commonly manufactured from single, 10 gauge steel sheet, which traditionally offers a wall thickness of around .134". This means, that EACH wall of the Granger ISS is approximately 3.7 times thicker than the fabricated 10 gauge steel. The Granger ISS offers a double wall construction, with each of the walls being approximately .500" thick.
While steel offers better physical properties than Fiberglass, it's ability to rust and absorb moisture, chemicals and elements from the ground, make the maintenance of a steel Tornado shelter something that requires a full time staff. As you can see in the picture above, even the best marine paint applications find it nearly impossible to keep the paint adhering to steel due to the continual absorbtion of moisture, the degradation of the steel and the rust that is eating away at the unit like a bad cancer. Steel, when not properly pre-treated prior to painting will continously suffer from filiform corrosion. Filiform corrosion is a typ of corrosion that commonly occurs under painted or plated surfaces. Filiform corrosion normally starts as a small, sometimes microscopic defect in the coating. Filiform corrsosion is minimized by careful surface preparation prior to coating, by the use of coatings that are resistant to this type of corrosion.
Steel Safe Room Tornado shelters typically use a removable vertical ladder for entry, most of the time this ladder is removed after entry for additional space or to allow the door to close. Many older or disabled customers have often complained about how difficult it is to enter a storm shelter with this type of access, especially in times of an emergency. In some cases attempted entry has resulted in even injury or not being able to get in the shelter at all. A sliding door is also commonplace on many of the steel shelters. Although this sounds like it is a good idea intially most consumer have found numerous problems with this type of entry. An impact to the door or the tracks usually leaves the door difficult or impossible to open. At the time of a Tornado emergency, you may only have seconds separating you and your family from safety and disaster.
Taking these factors into consideration, also allows us to point out that typically, Steel Tornado Shelters usually have Steel entrance doors. Generally, these doors are exceptionally heavy, even with the assistance of either an opening device or some sort of a gas shock. Could your children, mother or grandmother open the tornado shelter door in the time of emergency, or is it going to be too heavy and cumbersome? Is the door still structurally in tact, or has it began to corrode and rust as the steel door pictured below? Would the door below pass the FEMA 320 test in it's current condition?
With an oncoming Tornado or Storm, the last thing you or your family want to experience is the feeling of being uncomfortable and insecure inside of a damp, dark, rusting storm shelter. Steel shelters potentially require being re-painted, as often as every Tornado Season! Many shelter owners have experienced the need for their shelters to even needing to be re-welded only after a couple of years of installation! Don't subject you or your family to additional labor and maintenance to provide a safe place for your family to take shelter in during a Storm or Tornado!
Concrete Safe Room Tornado Shelters
Since the days of the World War II era, we have all seen images of concrete bunkers, concrete root cellars in older homes along with old storm cellars. The overwhelming majority of these put into homes thru this time period up thru the Cold War era, were mainly manufactured from concrete. Concrete being widely used and widely accepted as a building material has been used in Tornado Shelters for numerous years. While it displays physical properties that have extreme strength and durability in comparison to lesser capable materials such as Fiberglass & Steel, even concrete suffers corrosion & settling issues.
Concrete is a widely-used structural material that is frequently reinforced with steel. The steel reinforcement is necessary to maintain the strength of the structure. With the steel reinforcement inside of the concrete, the concrete is now subject to corrosion. The cracking associated with corrosion in concrete is a major concern, especially in areas with high humidities, marine environments and in areas which use deicing salts. Concrete corrosion occurs via 2 different ways: (1) Salts and other chemicals enter the concrete and cause corrosion. Corrosion of the metals leads to expansive forces that cause cracking of the concrete structure. (2) Cracks in the concrete allow moisture and salts to reach the metal surface and cause corrosion. While both of these means of corrosion have their advocates, it is possible that corrosion in concrete tornado shelters can happen either way. The means of how the corrosion happened isn't truly important, however the corrosion of the concrete tornado shelter leads to damage and for your Tornado Shelter to function safely and properly, the damage must be controlled. As you may notice with your driveway, sidewalks and highways, concrete expands and contracts greatly as it heats and cools. As the concrete expands and contracts, it cracks all thru the structure of the concrete, degrading the physical strength of the concrete Tornado Shelter. These cracks, require large amounts of maintenace on a regular basis to keep the cracks from growing exponentially fast. Generally, once a crack begins to form in a concrete Tornado Shelter, they will run all thru the shelter, comprimising the integrity of the unit. The Concrete Tornado Shelter will then begin to take on more moisture and even possibly leak ground water into the unit.
Some concrete shelter dealers have even claimed to be able to build a concrete Tornado Shelter at extremely cheap prices, by building the unit from cinder blocks. While the prices quoted are generally "too good to be true", they rarely offer any warranty or maintenance information as to how fast the concrete cinder block units will really last. Pictured below is a snapshot of a concrete Tornado Shelter built from cinder blocks. As you can see in the picture, the unit has deteriorated very rapidly, retaining water & moisture, while cracking thru multiple blocks and in dire need of much repair.
Concrete Tornado Shelters generally offer a short term option for a long term problem. What starts as a preventative measure to save a family, many times ends up becoming another home maintenance project along with the yard work, flowers, grass cutting, etc. Within the first few years, if the Shelter owner does not provide adequate attention and maintenance to the unit, it will quickly deteriorate and eventually become a potential safety issue rather than a safety solution. All across the United States, many concrete Tornado Shelters and Concrete Storm Shelters have all become "abandoned". Adding a Tornado Shelter to your families safety plan is not for the additional maintenance and hassle, it should be there to protect your family!
Above Ground Tornado Shelters
Many families decide that they would like to add a Tornado Shelter to their families safety plans, generally after a Tornado has caused recent destruction in their local area. While all Tornado authorities such as NOAA, FEMA, CDC, National Weather Service and more, all agree that the safest place to take cover from a Tornado is below ground. Flying debris causes most deaths and injuries during a tornado. The key to surviving a tornado and reducing the risk of injury lies in planning, preparing and practicing what you and your family will do if a tornado strikes. While Above Ground Tornado Shelters are extremely common in some areas, they still do not provide the level of safety and protection by Tornado Shelters that are actually installed underground. The Above Ground Tornado Shelters continue to put your family at risk via the risk of your home collapsing onto the Above Ground Tornado Shelter. Many homes, when hit by a Tornado, tend to collapse due to the destruction and the massive amounts of force and pressure.
As it may seem convenient to have an Above Ground Tornado Shelter close by in your garage, bolted to the floor, you would not want to be trapped inside of an Above Ground Tornado Shelter in the above pictured situation. Just as the inground Steel Tornado Shelters have their issues with corrosion, maintenance and rust, they at least offer a better alternative than the Above Ground Tornado Shelters that are merely bolted to a garage floor. Many above ground Tornado Shelters have a relatively crude appearance, created by poor surface pre-treatment, poor quality paint jobs, bad weld seams and poor assembly quality.
Granger ISS Safe Room
The extremely durable, innovative, polymer construction of the Inground Safe Room Tornado Shelter can provide a useful life span that under most conditions should exceed 500 years! Unlike concrete, steel and fiberglass In ground Safe Room Tornado and Storm Shelters, the Polyethylene construction won't deteriorate, alleviating concerns and maintenance issues that apply to other materials. Concrete safe rooms tend to settle and form cracks throughout the unit. With fiberglass safe rooms and shelters, moisture is a problem causing the unit to crack, deteriorate and/or possibly rot. Unlike Steel units, the In ground Safe Room Tornado Shelter will not rust or corrode. The extremely thick 1/2" double wall construction, offers not only the extreme strength of a rotationally molded product, but offers a wall thickness combination that exceeds most single wall units.
Standard Safe Room Tornado Shelter Features
|Circular Molded Seating w/ Carpet|
|3pt. locking security Door|
|FEMA 320 exceeding door|
|Battery operated LED lighting|
|Molded in 4" Ventilation cap|
In ground Safe Room Tornado Shelter Information
Granger Plastics Inc.
1600 M.A.D.E. Industrial Dr.
Middletown, OH 45044