Power attic ventilation

So I'm getting on a ventilation kick! Last week we talked about ridge vents. This week I want to talk about power attic ventilation. Ventilation is just so important in protecting your roof, I want you to know about some of the different options you have!
The basic purpose of power attic ventilation is to remove heat from your attic so that cooling loads are reduced. The vents exhaust the hot attic air and draw in the cooler ambient air. This helps your HVAC systems to not have to work quite as hard to cool your home, in turn, saving you money. A common thing to do with this ventilation system is to have a thermostat in your attic that signals the attic fan to come on once a certain temperature is reached, and then to turn off automatically once it cools to the desired temperature.
Now, as I want to present you with different options to be able to ventilate your home properly, they are not all equal in my book. I still think other forms of ventilation are superior to this, but if it comes down to having no ventilation or having a power attic vent, of course I would choose the power attic vent, hands down. Don't get me wrong, it's not a BAD system, it's just not the most energy efficient. Personally, I don't think using electricity to ventilate the attic and reduce cooling loads is very often justified. There are other techniques that will give you better results, sealing off the room and maximizing the insulation, adequate ventilation openings, solar powered attic fans, etc.
A lot of this comes down to what system is best for YOUR house. Also, did your builder do an adequate job of picking the right forms of ventilation to suit your house. Make sure this is a high priority whenever you're building a house.
So, your homework for the week is to check your house and make sure you have proper ventilation. Check your roof, make sure there are no "ripples". If you don't know how to do this, give me a call! If you're not local, give me a shout anyways and I can either help you through it or refer you to someone in your area who can!

www.sawyerroofing.com

Ridge Vents

Welcome back! Last week I talked about how fall and cooler weather was right around the corner, and this week we have it!! Yesterday was the first official day of fall, and it brought a slight drop in temperature, which has been wonderful. So today, I want to talk to you about ventilation; specifically, ridge ventilation.
Just so we are all on the same page, ventilation provides the condition to allow air to flow (hot air out and cool air in). Effective ventilation is a balancing act, which is why it is so important to have the proper types of ventilation for your specific home. Obviously, not all homes are created the same.
Ridge vents are located at the peak of the roof, making them virtually invisible from ground level. They provide a greater airflow than other vents do. I've discussed previously some of the dangers of a poorly ventilated house, but I wanted to briefly go over some of them again as I don't want you to miss the importance of proper ventilation. Too much heat and moisture can cause shingles to fail prematurely; excess heat requires more air conditioning, costing you more money; too much moisture can cause mold, mildew, and roof rot; and proper ventilation is required for most roof warranties to withstand.
Ridge vents are most common on shingled residential buildings. They allow warm, humid air to escape through the attic. Ridge vents help to prolong and protect a homeowner's roof from common culprits within the home.
Now, as with all things, you have to make sure your ridge vents are installed properly if you want them to work properly. There are DIY websites and youtube videos that teach you how to install ridge vents. If you're pretty handy, you shouldn't have a problem. Otherwise, leave it to the professionals! If you've installed it yourself and have a problem, don't be too quick to blame the ridge vents; make sure you have a professional come take a look at them before you throw in the towel!

www.sawyerroofing.com

Cold Weather Installations

Hey folks! Thank the Lord, we are coming upon the fall. I absolutely LOVE this time of year!! Changing of the leaves, football (Go UK!!), hunting, cooler weather... I love it all! With cooler weather coming, it's a good time to talk about cold weather installations. There are some differing opinions on whether a roof can be installed in freezing weather or not. I'm going to tell you right now, if a contractor agrees to install your roof when the temperatures are below freezing, he is more concerned with your money than he is giving you a quality roof. There are exceptions to every rule and matters/needs that sometimes can't be helped, but as a general rule, I'm very hesitant to put on a new roof if the weather is below freezing.
Now, in Louisville, we've seen some pretty harsh winters. Most of the time, we will get snow. We also have seen some milder winters, that didn't have much or any snow. With that being said, I like for it to be about 40 degrees or above outside to install a new roof. The shingles need to seal, and in order to do so they need to reach about 70 degrees. Now that doesn't mean it needs to be 70 degrees outside, they will warm by the heat of the sun.
I love putting roofs on in the spring because there is plenty of warmth and sunshine. Unfortunately, roofs don't decide to fail on us only in the Spring time. They tend to have minds of their own, so whenever there is damage, leaks, or anything causing the failure, we have to replace the roof. If it's freezing outside and there is not a desperate situation, I will just wait for the weather to warm up enough to get the job done. Freezing temperatures can often times cause the roof to not set properly, can cause shingles to fly off prematurely, and ultimately, cause the roof to fail way before it should.
Now, all that being said, there are certain techniques and procedures we follow in colder weather (and freezing temps if need be) in order to produce the best quality of roof possible. If your roofing need absolutely cannot wait, we will get the job done.
All in all, when we have the choice... warmer is better when it comes to installing a roof!

www.sawyerroofing.com

Standing Algae Growth

Have you ever noticed black/green streaks down a roof? Maybe they're on your own roof and you've never given much thought about it, other than it having a pretty bad appearance. Well those streaks you see are actually algae growth. This algae thrives in humid climates, and it is airborne. Yes, it sounds pretty disgusting. If a house in your neighborhood gets this growth, all the other houses are susceptible to it due to its' airborne nature. The algae spores are spread by the wind and are just looking for new hosts to attach to. Once one house is infested with it, the whole neighborhood can become overrun with this roof algae. It's definitely not a very sightly problem to have on your roof.
Now, there have been new shingles developed to combat this algae problem. If you live in a humid climate, you will definitely want to look into these new shingles. They use a Scotchgard system that blends 3M copper granules. These granules are manufactured into the shingles. These copper granules act as a natural biocide, which basically prevents any algae growth. Without this algae growth, you don't have to worry about the unsightly streaky appearance of your roof! There is actually a lifetime warranty against algae growth with some of the companies distributing these new shingles, which is amazing.
Personally, if I lived in a warm/moist/humid climate, and I knew there was a way to prevent algae growth on my roof, I would do it in a heartbeat. Not only do I not like the appearance of algae on a roof, I'm weary about the side effects of this algae growth. Over time, roof algae can eat through your shingles and into your roof deck, causing rot. We all know that wood rot is never a good thing in a home, but specifically on the roof, it's REALLY not a good thing. When the wood rots, water can get in through the cracks and create the perfect environment for mold growth. I'm not even going to get into the dangers of mold in your home, I think everyone is very aware of how dangerous that is.
So all in all, if you have stains or streaks on your roof, get it checked out. Don't ignore it! If your roof needs to be replaced because of the damage, consider these algae resistant shingles so that you won't have to worry about it again!

www.sawyerroofing.com