Tag Archives: IGU

Buying impact windows – before and after the sale

14 Sep

If you are one of the conscientious homeowners who stepped up to the plate and bought impact windows in recent years, good for you. They were the best thing available on the market – at the time. It’s a fact that impact glass windows do a superb job of protecting the envelope of a structure after impact, but you will see from any online video that in the process, the impact windows are absolutely demolished and will require the expense and mess of replacement. Go to Youtube, search for “impact glass test” or “impact window test” and see for yourself. In my opinion, these should be “required viewing” by any prospective window buyer.

http://www.youtube.com/watch?v=YCHtON-BQsE

http://www.youtube.com/watch?v=Gu7XTW2SHW4

http://www.youtube.com/watch?v=-EEUsxe-pbA

Ok, let’s pretend that the storm has passed. Now you not only have a huge mess of broken glass to clean up, you also have the added expense of getting the broken window part replaced. If you’re lucky and you have single or double hung windows and the impact was directed to the glass only and not the frame, you might be able to replace just the glass unit. This is another important question to ask the salesperson; “Can the glass be replaced without destroying the window?” Some brands may even replace just the broken lite. You will have to check with the manufacturer to see how this effects the warranty. The next best option is replacing the window sash unit (the glass and surrounding framework). Replacing just a sash is a little more expensive but quite a bit cheaper that getting the entire window replaced.

The bottom line is, your impact windows weren’t cheap the first time around and they won’t be cheap to replace. If you received any kind of a warranty with them, read it closely. Do a check to make sure that the model of window that you purchased still has replacement parts available. You may find out that the entire company that made your windows is no longer in business. The installer who originally put them in is not who issued the warranty, so don’t him him/her too hard of a time (unless the window failure is due to improper installation). Now might be a good time to protect your investment with the addition of Evolution Hurricane Shutters.  Weigh the cost of getting just one of your main impact windows replaced vs. the cost of an Evolution Hurricane Shutter. If you want, add in the inconvenience, safety risk and mess of a broken window…..the amount of time you are going to have to wait to get your new window (they aren’t sitting on the shelf at the big box store), scheduling the replacement by the window guy (window companies get VERY busy following a major storm) and the insurance hassles that go along with your claim. Why not just avoid ALL of that in the 1st place?

The other drawback to standard impact windows is their lack of energy efficiency. When compared to a new non-impact rated window, they do little to reduce your monthly energy consumption. There are some models available that are more energy efficient called “insulated glass units” or IGUs. These are made up of a layer of impact glass and a layer of non-impact glass that are separated by a sealed air space. Sometimes the air space is filled with an inert gas (like argon or krypton) that is supposed to prevent deterioration of any metal components or glass coatings inside and to aid in energy efficiency. If you do a little industry research on them you will find that the gas slowly leaks out and and eventually does nothing for you. After the gas has leaked out, then outside air is allowed to be drawn in. This will also make your windows start to get cloudy and allow condensation inside the air space. Another point to pay close attention to is that these windows need to be installed perfectly plumb within the opening. Any wracking or twisting of these windows at the time of installation will result in breaking the seal and your windows will cloud up, usually starting in the corners. This clouding is an indication that your windows are no longer doing the job that you paid extra bucks for them to do. Also inside this “IGU” is a moisture absorbing substance referred to as “desiccant”. This will hide the seal failure for a while, but not forever and that’s when the condensation will appear inside your IGU.

Evolution Hurricane Shutters have been designed not only to protect your expensive hurricane impact windows, but to make them more energy efficient. We guarantee that the heat loss or gain through your window areas will be reduced! This is just one more reason why we say that Evolution Hurricane Shutters are “The rEvolution in Hurricane Protection”.

Please don’t get me wrong! I’m not down on impact glass – I recommend it to almost every one of my commercial property owners. Every strip mall or shopping plaza needs to have impact glass in the entrance doors. I don’t sell them and make no recommendation on which brands to buy (maybe I should start). My goal is to get impact resistant and energy efficient Evolution Hurricane Shutters on all of the storefronts and windows while recommending energy efficient impact glass doors on the entrance(s). When the project is complete, not only will the shopkeeper be able to simply lock the front door and leave when there is a hurricane bearing down on the area but, every night at closing time he or she will be certain that the energy saving and added security of Evolution Hurricane Shutters will be working overtime.

2 story plaza in Marco island

Typical strip plaza application.