Tag Archives: non-porous hurricane protection

Architects and Designers Hurricane Shutter Info

29 Sep

Architects, Designers & Builders

Maybe the single most important thing to know about Evolution Hurricane Shutters is the fact that they just don’t look like shutters at all! They are more like a hi-tech storm window without the shortcomings of glass. Other advantages are that they won’t break, they resist condensation, they reduce sound resonance and best of all they conserve energy. This allows architects and designers much more freedom in the creation phase. The most important thing to remember is this; no matter how much film you put on the front of it, inside of it or on the back of it, glass is going to break when impacted.

The Evolution Clear Advantage

The hurricane shutter that doesn’t look like a shutter!

Are the design requirements for maximum energy efficiency conflicting with hurricane protection requirements on your projects? Are impact windows limiting your creative design inner forces? Are historical rehab projects requiring that you keep the current architecture with little or no variance? Are custom windows too costly for your budget conscious clients? Evolution Hurricane Shutters are made to order for your new projects or custom made to retrofit your historical renovations.

6 Reasons to utilize Evolution Hurricane Shutters on your next project.

  1. Design aesthetics – Blends with almost any architectural style, nearly invisible from the street giving you more design freedom.
  2. Performance – Nothing matches the benefits that this product offers in durability, sound abatement, UV filtering and, especially, energy efficiency. No broken windows to replace even after repeated large missile impacts. Florida Building Code approved.
  3. Cost effectiveness – Lower cost, lighter and stronger than impact windows – especially in custom shapes.
  4. Green – Save on energy costs. Crystal clear hurricane protection that pays for itself faster than any other type of aftermarket protection. Reduce your project’s overall energy usage.
  5. Low maintenance – No deployment, no storage, no extra labor, no gearboxes, and no power supply required. No IGU seals to leak, affording consistent and predictable performance.
  6. Project advantage – Increase overall structure energy efficiency without the cost and labor of added insulation or building materials.

You can now offer your clients the best and fastest return on their hurricane protection dollar while “keeping it green”!  Let standard energy efficient window designs save energy and fit your architectural scheme and let Evolution Hurricane Shutters take care of hurricane, vandalism and simple “smash and grab” protection.

Which projects benefit most?

  • Great for first responder buildings. No response delay of 911 calls due to clean up efforts.
  • Public works depots and substations. Workers will be cleaning up the community instead of their own departments.
  • Medical rehabilitation facilities. Additional fortification will defer evacuations of category 2 or 3 storms. Accommodate residents from lesser equipped facilities.
  • ALFs, ACLFs and nursing homes. Become the area hub to temporarily house evacuees from other facilities.
  • Schools and institutions. Reduce window breakage from vandalism and reduce energy consumption. Add to overall shelter safety.
  • Art galleries or museums. Eliminate ultraviolet ray infiltration.
  • Military barracks, officer’s quarters and family housing. Increase protection and reduce energy and maintenance costs.

Hurricane protection has been made mandatory by insurance companies in Florida and other hurricane zone states. With every new storm that makes landfall, new areas will added and existing zones will only increase. Designing with Evolution Hurricane Shutters put your structures a step ahead of the curve and the rest of the pack.

Because Evolution Hurricane Shutters are permanent, they require no storage hassles and no deployment which makes them perfect for absentee owners because they protect while the owner is gone – without announcing the fact to everyone who drives by that the structure is unoccupied. Simple interior and exterior timed lighting completes the effect.

Now you can specify the right windows for your next project and then add the flat, crystal clear, aluminum framed, polycarbonate features of super strong Evolution Hurricane Shutters for added protection, security and energy efficiency.

Reduce building maintenance by eliminating the protected nooks of insect nests, bird nests and cobwebs. Give your clients what they want and need – hurricane and security protection that works for them 24/7, reduces energy consumption, and looks great while doing it!  Eliminate broken glass from vandalism. There’s even a clear exterior applied film available for anti-graffiti, repeated washing or high traffic areas. Or how about a reflective film to reduce solar heat gain and add privacy?  We have that available, too!

Evolution Hurricane Shutters are ideal for single family homes and investment properties as well as multifamily, apartment or condominium projects.  Structures with energy efficient upgrades are in high demand and increasing the energy efficiency in your designs without the expense of thicker walls or additional insulation on new builds or renovations will put you in the running on every design.

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Porous vs. non-porous hurricane protection

17 Sep

As a homeowner in a hurricane prone area, it is important to know the performance differences between porous and non-porous hurricane protection. What? You never heard of such a thing? Don’t feel like the Lone Ranger – neither have most homeowners. As a matter of fact, the person selling you your current hurricane protection probably hasn’t either. Here’s the way it has been explained to me:

Porous type protections have open areas around their edges or on their surface that equal more than 5% to 10% of the area covered by the shutter. This allows air and/or water to pass through or around them. Some have as much as 50% open area (like some screens or mesh). They provide only impact protection and rely on the door or window they are protecting to resist the water penetration and air infiltration from both negative pressures (those directed away from the house) and positive pressures (those directed towards the house). So, porous systems block wind-borne debris and are usually built out far enough so that they will not deflect into the glass when impacted by the standard 9-pound 2×4 lumber missile traveling at 34 mph. However, they don’t always do the best job of reducing wind pressures or water leaks. The result is that the windows and doors behind them sometimes experience the full effect of the wind pressures and may leak about as much as an unprotected window or door.

Non-porous hurricane protection systems should be  water and air tight or very close to it. In many cases, even protection labelled as “non-porous” will still allow outside pressures to affect the window or door behind it. This is due to the fact even though the non-porous protection has less than 10% open area, it’s still more than 0% (0% being considered water resistant) If the windows behind them are not strong enough they can still be blown in, which allows wind pressures and driven rain to enter the structure.

Here are 2 examples:

This..

You have a corrugated metal or plastic panel-and-channel system over your 48″ tall x 96″ wide living room picture window. To deploy the system, the panels are tipped towards the wall, slid up into the upper channel and then are pushed back against the wall at the bottom (or window sill), and then either dropped down into the floor of the bottom channel or bolted to an angle below the window sill. This leaves a gap at the top and bottom where the corrugations come away from the building. These gaps at the top and bottom allow wind and rain to get in behind the shutter and attack the window. There are also gaps at the vertical edges of both end panels where they meet the outside wall of your living room.

When the wind blows, some of the pressures and rain are allowed attack your windows. If you were to open the inside window during the storm, you would definitely feel wind blowing on you. This is technically known as air infiltration. Any rain or water that gets past the shutters is called water penetration and you will most likely feel this, too. This is considered a porous system – it allows air pressure and wind driven rain to get at the protected window. If you have newer wind rated windows, this system will be fine for you. It will keep direct hurricane force winds and large missile wind borne debris away from your windows.

Vs. this…

You have purchased and cut a flat cellular polycarbonate twin-wall sheet to the over-sized dimensions, per the instructions, to fit over the same picture window. You have the proper support bars in place to prevent deflection during impact and your anchor holes are all lined up and you’re ready to deploy the sheet. You affix some standard foam weatherstrip (with adhesive backing) to the backside perimeter of the sheet in the oversize area. You hold the sheet into the proper position and drill and insert the anchoring hardware and tighten per instructions.

In this case, when the wind blows, there is no attack of the protected window. Theoretically, if the weatherstripping is working properly, you can open the inside window during the storm and light a candle and it won’t blow out. The weatherstrip should keep the wind and water from getting in. This is a non-porous system. If you have older, single or double strength aluminum or pvc framed windows from the ’60s, ’70’s or ’80’s, this might be a good system for you. And it lets light in so it won’t make you feel like you’re in a dungeon and will save you a bunch of battery power and candles when the power goes out. It isn’t going to be cheap, but it will be lightweight and easier to deploy come storm season. If you have large windows to cover, you could even invest in hurricane rated mullions (support bars) that are the same color as your window trim and leave them in place permanently. That will decrease your deployment time and as long as they are strategically located, won’t obstruct your view too badly and won’t be too noticeable when you look outside.

Finally, in some cases the porosity of the system is determined by the installation itself. The farther away from the face of the structure the system is mounted, the larger the gap for wind and rain to enter. Make sure that you have it in writing as to which system is being installed on your building.

Hurricane impact windows are non-porous hurricane protection, as well. Evolution Hurricane Shutters can be installed as either porous or non-porous protection. We recommend  the non-porous method because it provides the opening with the greatest protection and the greatest energy conservation and sound insulation.
The lesson here? Although non-porous protection is superior to porous protection, you may only need to have non-porous to satisfy your insurance carrier or local building code. Take a common sense approach to your hurricane protection needs. Is seasonal storm protection all that you want? Worried about vandalism? Does your yard serve as the local ball field for the rest of the neighborhood? Do you want energy savings, too? Will you always be around to deploy the protection? What conditions does your insurance company dictate? If you are only a seasonal resident, you may be required to have an “installation contract” in place with a local company to prove to your insurer that your hurricane protection will be in place in time to protect your structure from the storm. Just a reminder – read the news and realize that the insurance companies are getting tighter and tighter about what they are going to pay out. They are ticked off that hurricane protection costs them revenue but glad about reducing their risk. They don’t want to pay out any more money than they have to and their inspectors will start nit-picking your protection at the rime of the policy start and they will also be more adamant about post storm investigations to lower their settlement figure. Taking short-cuts or getting lazy about putting protection in place by the homeowner will only draw the ire of the underwriter and get you a step closer to a fraud charge.