Tag Archives: energy conservation

Have You Been Told The Truth About Impact Windows?

17 Dec

Are you one of those building or home owners who believes that hurricane impact windows will somehow “survive” or “withstand” impacts from hurricanes, theft or vandalism without breaking? Well, THE CLAIM ISN’T TRUE but don’t feel alone. Many consumers truly believe that “hurricane impact resistant windows” are unbreakable when, in actuality, no such window is available from the major U.S. window manufacturers.

Impact windows are a “sacrificial” form of impact protection that must be replaced after any one of these events occurs. Being three times or more as expensive as regular windows, replacing them every time that they break can be a real budget buster.

If you go to Youtube and perform a search for “impact window testing” you will see that impact windows will not withstand large missile impacts without being destroyed. Here are some other facts that consumers need to be aware of:

  • Impact glass alone does not determine compliance with hurricane resistance standards. Simply swapping impact glass for regular glass does nothing to strengthen the window frames or anchor the glass to the frames.
  • Most laminated “impact glass” is simply 2 pieces of regular window glass with a special clear liner sandwiched in between – the strength of each piece of glass remains the same.
  • In order to be an approved hurricane product, all impact windows are designed to break when impacted, but MUST remain anchored to the window frame and not blow out to prevent pressurization of the building interior from hurricane winds.
  • Some insurance companies only honor the cost of regular replacement windows and not the more expensive impact windows that you filed on your homeowner claim.
  • Once you file a claim for damage on your impact windows your insurance company may require that you shutter them next time or you will end up paying for their replacement out-of-pocket.
  • Due to design changes, replacement sashes/parts for current window models might not be available in 10 -15 years. You will be forced to purchase and install new windows instead of simply replacing old parts.
  • If you have windows that were installed prior to 2005, there’s a very good chance that replacement parts are currently unavailable for them.
  • The anticipated lifetime of plastic (PVC) framed windows is 20-25 years. Old growth wood framed windows can last 2-3 times longer and quality aluminum ones even longer.
  • A laminated impact window does very little to offer increased energy efficiency over a standard new window with glass of the same thickness.
  • Before opting for windows with insulated glass units, you may want to invest in secondary glazing (storm windows) for energy savings. They offer other benefits as well.
  • Impact windows must be protected with shutters or plywood to assure no breakage in the event of a storm, theft attempt, incidence of vandalism or building maintenance accident. This can also be accomplished with storm windows. When an impact window is subjected to any of these forces it will break and require replacement.
  • The actual payoff in energy savings for the more expensive insulated “super energy efficient windows” is a minimum of 40-70 years which is quite a bit longer than manufactures claim.
  • The time frame required to replace windows broken during a catastrophic storm could be months. Ask the survivors of the hurricane season of 2004.

It is important to be informed as a consumer. Don’t rely on the claims of window manufacturers to be factual. They have a tendency towards making figures and statistics fit their sales pitch. The internet is loaded with real consumer information as well as little known industry facts located in places like online window forums. Do your homework, ask questions and gather the facts. A knowledgeable consumer can save thou$and$ on storm protection while, at the same time, being better protected.

If you have hurricane shutters currently installed over your windows and are having impact windows installed, don’t throw those shutters away! They will prove invaluable in protecting your new impact windows and keep them from getting broken.

You may well be better off refurbishing your current windows and adding hurricane rated secondary glazing.

Resources:

http://www.communitypreservation.org/enews/windows.htm

http://www.houselogic.com/home-advice/windows-doors/broken-window-repair-or-replace/#.

http://starcraftcustombuilders.com/windows.htm#.VJHMnckWVVE

http://www.evolutionhurricaneshutters.com

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Energy Saving Hurricane Shutters

28 Aug

Sunlight creates heat

I know….quite the Earth-shattering statement, right? But there’s nothing like pointing out the obvious. Almost any type of hurricane shutter will save some energy if in no other way but by blocking sunlight, creating shade and thereby blocking the sun’s rays from hitting objects within your home that create heat. The problem is, the energy is only saved when the shutter is deployed. Roll-downs, accordions, corrugated metal panels, colonials, fabric panels, screens and Bahamas all block out a certain amount of sunlight and shade the window when they are deployed. But when they’re deployed, they block, and sometimes totally eliminate, the view completely. The other catch is that they only make shade during the daytime when the sun is shining. Your windows still lose and gain heat all night long.

Temperature differential

There are other forces of energy that bring heat into your home. One way to demonstrate this is at nighttime when there are no sun rays. Here are 2 scenarios to entertain…..a hot August night or a cold January one. Simply place your hand on the window and what do you feel? If it’s August and the A/C is keeping your home at a comfortable 72 degrees and it’s still 80 degrees outside, you’re going to feel warm glass. If it’s in the dead of winter and it’s 20 degrees outside and your heating system is keeping it a toasty 76 degrees inside, the window is going to feel cold. Pretty simple stuff, right? It’s known as temperature differential. But there’s more to it than that……and I’m kind of getting off topic here, but bear with me. It all comes around full circle in the end.

The window war

The warmer air on the inside of the glass seeks out the cold of the outside of the glass while the cold on the outside is seeking the warm of the inside. Depending upon which force is stronger determines if the outside of the glass is warmed by the inside or if the inside of the glass is cooled by the outside. It’s a kind of “window war”. Whichever side has more “push” wins the battle. What determines the “push”? The push is greatly influenced by the circulating air on each side of the window. On the inside, there is calm circulation – a ceiling fan, movements of people or pets and the circulation created by your heating or cooling systems. On the outside?? – the force of Mother Nature – the WIND.

So, which side of the window do you think has the greatest “push”? Anyone who thinks that any answer other than “Mother Nature” is the right one, has to come and sit in the front row for the rest of the class! The ceaseless power of Nature always seems to have the upper hand. That’s why your windows feel the way that they do on the hot August night or the cold January night. Mother nature is always winning. If you were to go out side the glass will feel the same as the outside temperature – another sure way to see that Mother nature is winning. We’ll revisit Mother Nature later on in this post.

The analogy that I just described isn’t precisely the way that it works in science, (because science tells us that there’s no such thing as cold – only an absence of heat) but it helps to make my point about the energy battle of window glass. One important concept to grasp at this point in the discussion is that glass is a VERY poor insulator and conducts heat and cold all too well. It also breaks and we will revisit these facts later on, also.

Peace in the window war or merely a truce?

Glass manufacturers set out to make peace between the inside and outside energies so they came up with the ingenious idea of protecting the layer of window glass with another layer of window glass and separating them with an air space. They then sealed them around the edges so that nothing could get in or out. This helped to bring the advantage of the outside force to a more equal level of the inside force because there was no longer any “wind” on the opposing sides of either layer of glass. These became known as “insulated glass units” (IGUs, for short) and the window industry latched onto the idea and made windows by the tens of thousands.

There was, however, one slight problem. The air that was sealed tightly inside would change from getting warm during the day to getting cold at night plus all of the temperature fluctuations through the 24 hours of a single day. Every time the wind blew, every time a cloud came over, every time it rained….well, you get the idea – A LOT of temperature changes in a single day. If you multiply that by just 7 days of a week, that amounts to many times more changes. These changes in temperature cause the trapped air to expand and contract and it does this with every temperature change and, over time, would eventually weaken the seals and seep out of the air space. This allows the more humid air from outside of the air space, into it and causes the IGUs to get cloudy. In an effort to try and disguise the fact that moisture was getting in, they put a powder inside the window to soak up the moisture, but it only delays the inevitable. No matter what is tried, this temperature “cycling” up and down can’t be stopped. This is the other one of Mother Nature’s forces that I referred to earlier that can’t be controlled. To this day it is universally accepted that there will always be this problem until someone perfects a way to equalize the internal IGU’s air space pressures with those outside of the air space without them mixing together. There is simply no way to stop the expansion and contraction cycling that occurs inside. No matter what brand of window that you use, if it is an IGU that uses a sealant system around the perimeter (they all do), it will never be guaranteed not to leak – most don’t make it past 8 years. Independent studies have shown that every year, a sealed IGU loses a MINIMUM of 1-2% of the air (or gas) inside and then starts replacing is with regular humid air from the atmosphere. Keep this in mind when someone tries to convince you that fancy internal gases like Argon or Krypton are the cat’s meow of IGUs. Although they don’t expand and contract as much as the air that we breath, they still do it – it’s just physics and can’t be stopped.

This entire process of making IGUs takes place in a factory where the air qualities like temperature and humidity are controlled and also to reduce the amount or dust and other foreign particles that might make their way into an IGU. These facilities do a very good job. however all of this comes at a high price and, of course, gets passed on to you and I, the consumers.

Someone please stop the madness!

Let me digress a little more, without totally digressing. You see, the same folks who thought up the idea of making IGUs (that they concede won’t last long) decided to take two pieces of glass and sandwich them around a super-tough plastic sheet that has very high tear strength. They took this “glass sandwich” and put it in a window frame, called it “impact glass” and made tens of thousands of more windows with it. Why they use the word “impact” to describe it, is beyond me, because the one thing that it ISN’T good for is impacts!! Here’s a video that shows that: https://www.youtube.com/watch?v=Vp6Nl9ZBMHE . I picked this video at random – there are dozens of others that show the same thing. Do these windows look like they can stand up to impact to you? What these windows happen to do well is keeping a large missile (or projectile) traveling at 50 feet per second from penetrating completely through the window and creating a hole. If a hole were to be created, we know that wind can then enter a structure and increase the pressure inside that will allow the roof to be blown upward and possibly off of the building.

So here’s the new scenario…..They take these VERY expensive impact IGU windows (sometimes 3 to 4 times the cost of regular windows), sell them to the consumer, install them in their homes and after a storm passes, you, the homeowner, now have – you guessed it – VERY expensive BROKEN windows. I don’t know if it’s just me or what, but this approach makes absolutely NO SENSE to me. Why design something 3 to 4 times as expensive that will break so that you have to buy it again and again each time it breaks?? Am i wrong here??

An intervention of common sense

So….is there a way of reducing heat gain and loss though your windows without defying the laws of Mother Nature? Well, in fact there is…..and it has been around for a long time. It’s done by using storm windows and it’s even recognized as a proven method of reducing the amount of heat loss or gain through any window. Here’s the link to The United States Department of Energy website that discusses the topic: http://energy.gov/articles/5-steps-making-your-windows-more-energy-efficient  . There are many other sites, both government and private, that will echo this method of energy conservation as prudent.

The mission

What if there was a way to use this old tried and true method of saving energy and combine it with a hi-tech material that won’t break like glass and is a better insulator, too?? That way we wouldn’t have to put so much effort into defying the forces of physics and Mother Nature.

I’m here to tell you that there is a way to do it and it’s with a product that has been around a long time. Not as long as the idea of storm windows has been around, but as long ago as the 1950s. How about this idea ………..instead of making something that breaks, why not make something that DOESN’T BREAK??? Instead of using a cheaply produced PVC frame that will only last 20 years, why not use super strong aluminum pieces that will last 100 years? And instead of making a sealed (but leaky) IGU, why not combine these materials and use the U.S, Depart. of Energy’s proven method of making it like a storm window to save energy? What you would end up with is something without an expensive IGU (that has yet to be made 100% reliable) and without the fragile characteristic of impact glass.

Winning the battle

If this sounds like a win-win concept to you, it did to me, too, so here’s a video showing the end product in a live demonstration. There’s no glass to break because this ’50s era material is called polycarbonate – a plastic that is 200 times stronger than glass, a fraction of the weight and a much better insulator. There’s also no seals to fail and no huge, expensive, dustless or atmosphere controlled building required to assemble it.

Take a look at the video below and tell me what you think. But before you do, keep in mind that this energy saving hurricane shutter will protect ANY window – new or old, impact or non-impact in just about any shape. And because it doesn’t require a huge, expensive factory these can be sold to the public for 1/2 the cost of the expensive IGU impact windows (that break and lose their seal). It’s called by everyone who sees it “the hurricane shutter that doesn’t look like a hurricane shutter” and I think you’ll see why: https://www.youtube.com/watch?v=QGFx9jY7_NE 

So, now that you have watched the video. Are you:

  1. Surprised?
  2. Astonished?
  3. Impressed?
  4. Curious?
  5. All of the above?

If you want to know more visit:The hurricane shutter that doesn’t look like a hurricane shutter. and find out more. Maybe they’re just what you’re looking for?

Building or Remodeling a Home? The nearly invisible protection of Evolution Hurricane Shutters also creates a dead air space that provides energy savings like no other type of hurricane protection.

2 Oct

Hurricane Shutters for Your New Home or Addition?

Whether you’re building a new home or remodeling your existing home, in today’s economic and environmental climate saving energy is one of the most important features homeowners and buyers strive for. Nothing is scarier than finishing your new addition only to see that first electric bill and then having to adjust your budget (or your lifestyle) to accommodate the sudden increase. At Evolution Hurricane Shutters, we follow the advice of the U.S. Department of Energy by urging our customers to focus their window budget dollars towards energy efficient windows. According to them, as much as 40% of your heating/cooling costs are lost through your windows. Energy efficient windows can, and do, get expensive, but in the long run the energy that they save help give the buyer a return on his/her investment.

After you have picked out the energy saving windows of your choice, leave the job of hurricane protection to Evolution Hurricane Shutters – it’s what they do best. In addition to protecting your energy saving windows, the dead air space created between your windows and your Evolution Hurricane Shutters will help your new windows perform even better. In fact, simply installing our shutters over your existing standard windows will reap big rewards at the end of each and every month. And the icing on the cake? A rebate on your homeowners insurance for wind and impact protection.

Some impact windows are offered as IGUs (insulated glass units) where the inner layer is impact glass and the outer layer provides insulation. The two panes are spaced apart and sealed and then the void between them is sometimes filled with an inert gas like argon or krypton. These IGUs are more energy efficient than standard impact glass but this energy efficiency comes at a steep price – not to mention the fact that the units lose a percentage of their effectiveness each year. The added expense extends their payoff out another decade. Another drawback?….when they incur an impact from a storm or other incident they will break. Getting them replaced is costly and suddenly the energy payoff is extended over an even longer period of time than what the salesperson told you. Why gamble when you don’t have to? The experts all agree – It’s not a matter of “if” a major storm hits, it’s only a matter of “when”. Why not have your hurricane protection saving you money and making your home more comfortable until that storm finally hits? Homeowners now have the choice of getting the outstanding energy saving feature of Evolution Hurricane Shutters all year long or keeping your impact protection stored away in a garage or shed.

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One hit is all that it takes to make hurricane impact window replacement mandatory.

Cobwebs and wasp nests are a thing of the past with Evolution Hurricane Shutters and unlike rolldowns or accordions, there’s no place for nesting birds.

Are you concerned about vandalism from BBs, pellets, rocks or other thrown projectiles? How about broken

The nearly invisible protection of Evolution Hurricane Shutters also creates a dead air space that provides energy savings like no other type of hurricane protection.

windows from lawn maintenance equipment, your kids playing catch in the yard, an errant golf ball from the fairway or a smash and grab thief? Added security is an automatic benefit you get with Evolution Hurricane Shutters, too.

Get the peace of mind that flat, crystal clear, hurricane impact resistant, passive energy saving Evolution Hurricane Shutters provide …You’ll soon see why we call them “The rEvolution in 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.

Hurricane Shutters for Your Church

24 Sep

Is your house of worship experiencing any of these?

  •   Are monthly energy costs using up more and more of your donations?
  •   Does your congregation feel the need for a true sanctuary?
  •   Are your stained glass or lead-camed windows protected from hurricane winds and debris?
  •   Do you need vandalism protection?
  •   Do any of your members need a shelter from an impending storm?
  •   Is your place of worship also a school, community center or other campus?
  •   Is your membership recruiting and enthusiasm down among members?
  •   Does your church host outdoor sporting events or community festivals

Having Evolution Hurricane Shutters installed on your house of worship will:

  1.   Dramatically reduce your monthly heating and cooling costs.
  2.   Protect expensive or irreplaceable stained glass, photographs and artwork.
  3.   Stop damage by hailstones, rocks, BBs, pellets or other projectiles.
  4.   Eliminate window damage from athletic gear during sporting events.
  5.   Prevent window breakage from grounds maintenance accidents.
  6.   Protect your windows before, during and after storm conditions.
  7.   Reduce noises from outside during prayer, school or quiet time.
  8.   Eliminate places for nesting bird, spiders or stinging insects.
  9.   Increase donations from community sources from storm shelter capability.

When your members receive the feeling of pride from knowing that their house of worship
provides shelter from hurricanes to those in need, your in house donations will increase.
That same pride and a desire to showoff the added shelter capability by current members
will prompt them to invite their friends to more services and activities.

Stained glass protection of a large 14 foot wide X 22 foot tall window.

After your hurricane shutters are installed, send out invitations to all of the
surrounding congregations announcing a Gala event to come and see the true
sanctuary that your membership has created.

Contact your favorite contractor or hurricane protection installer to find out how soon
your house of worship can be reaping the benefits of Evolution Hurricane Shutters.

Sometimes architecture can’t be sacrificed for the sake of protection. This is where Evolution Hurricane Shutters rise to the occasion.

Here’s what’s left after the scaffolding comes down and the work is completed

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.