Different types of Roofing Ventilation

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Ventilation is a key factor of your roofing system. It’s what permits the structure to breathe warranting proper airflow and avoiding humidity damage during the hotter months. Airing also prevents the roof from drying out during summer.

Roof vents are also called attic vents; these vents guarantee there is a good quantity of airflow and airing in your attic. The general reason why making roof vents is to keep cool in the summer and dry during the cooler months. Encouraging natural airflow makes your home more comfortable by providing a way for hot, moist, or stale air to leave the house. Passive ventilation known as attic ventilation is important in both hot and cold climates.

Airless or poorly ventilated attics don’t have an escape route for the hotness that builds up. This accumulation of temperature might eventually harm your roof from the inside out. Continuous edge vents are more effective because they are linked at the top of a roof’s edge, permitting trapped warm air to escape from the attic. It also works better because it allows external moving creating a vacuum when the breeze blows over the top of the roof.

How Roof Ventilation Works?

The roof design should provide sufficient air space for insulation and air flow under the roof and attics. And, a well-designed system will balance the intake and exhaust ventilation under the roof so that the attic is slightly hassled, preventing conditioned air from being sucked out too quickly through the vents.

Airing only works when air flows. There are two main methods to create air flow within an attic:

  1. Mechanical. This one will require a power source.

  2. Natural. Most of the times, natural roof ventilation is used. The heap effect and the wind effect work together to naturally circulate air.

The stack effect happens when hot air increases and creates a higher pressure at high points in the roof. The warm air that escapes is identified as exhaust. However, this hot air can’t outflow without an inlet for cooler, low-pressure air. The fresh air that goes in is referred to as intake. The mostly common type of Roof vents are:

Exhaust Vents

Breeze turbines are also usually called whirlybirds. These are one of the oldest types of roof vents existing. You might recognize the wind turbine from older homes or even your youthful homes. Maybe your home now has one.

Power Vents

These types of roof vents work on electrical power. They are frequently referred to as electric-powered attic vents. These mechanical escapes can be located on your roof or your gable. On top of that, the roof power vents are primarily low-profile. They usually are slight and circular and set close to your roof. There are 2 core types of powered vents – hardwired models and solar-powered models.

Hardwired Power Roof Vents

The most common power roof vent is a hardwired power roof vent. If you make the decision to use a roof vent that is not solar-powered, this is what you will be using. This kind of rooftop vent is wired into your house and usually it is attached to a thermostat to operate the vent. Nevertheless, they might also be functioned by a manual switch instead.

Solar-Powered Roof Vents

Now days this is a very popular, roof ventilation system, the solar-powered roof vents are rather different from hardwired roof vents because they are powered by solar power. These roof vents have a solar panel attached to the base, and they are finally powered by the sun’s rays charging the panel.

Box Vents

Box vents are very popular and a well-known vent option. You most likely have seen that small box sitting on a roof, sometimes you can possibly see a roof with several on it. When it comes down to it, the most recommended vents are either ridge vents or box vents.

Box vents are combined most of the time with soffit ventilation methods for optimal performance. These kinds of roof vents do not use electricity. They work best with open attics. The way the vent works is the wind flows through and combined with the soffit, the vent pulls wetness and hot air out of the attic.

We can say based on these different types of roof ventilation systems that your roof ventilation should be examined along with your roof at least twice a year. You should look for anything that may be blocking the vent, such as plants and other debris. It’s a good idea to examine the inside of the attic or roof surface for damage from humidity. And, it is also very important to be sure to inspect your attic insulation to see that it is in good condition and properly placed so your home is well-insulated against outdoor temperature changes.

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  Roof Ventilation

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Roof Ventilation

Having the correct amount of roof ventilation in Chicago is important to maintain a healthy roof. With the various temperature changes throughout the seasons, our roofs take a beating.

There are many benefits to having the correct roof ventilation. A properly ventilated roof keeps it looking good visually and also adds to its lifespan.

When you think about roof ventilation, you should think of it as the roof’s respiratory system. It helps keep hot air from building up inside the roof.

Proper roof ventilation

Condensation can build up inside the roof and cause extreme damage on many levels.

Since winter will be approaching soon, we also need to think about ice dams. Ice dams can seriously damage a roof. Sometimes it is not even noticed until it’s too late.

Heat in a roof is a doubled edged sword. In the summer the heat can build up and make more work for the A/C unit. Because the heat cannot escape, it is radiated inside the home. The more an A/C unit has to cycle between on and off or just seems to run forever will cause the unit to break down faster.

Inadequate ventilation can cause moisture to build up within the attic. This moisture can rot the wood, drywall, insulation and paint. Not to mention it is also a great environment for black mold to form. We all know all the health problems black mold can cause.

Moisture can also cause rust of the metal fasteners. This can include the vents, nails, straps, screws and almost any other type of fastener. The problem with rust forming in the attic is that it is usually not inspected on a regular basis. Therefore not noticed before it needs to be taken care of.

Proper ventilation of the attic assures you that the roof stays healthy and can last for many years to come. Contact or call us for an inspection. Winter is quickly approaching and the time is now to avoid problems in the future. Davis Roofing and Construction is here to help you prepare yourself for the winter season.

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  How to Avoid Roofer Scams

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There are a lot of illegitimate roofers out there. Here are some of the tell-tale signs that someone might be trying to scam you with roof repair jobs.

Storm Chasers

This one won’t catch you by surprise. Right after a big storm, they show up at your door with a laundry list of repairs that need to be made to your roof. Most of these are going to be repairs not needed.

No Down Payment

Everyone knows that if you can’t pay something in full there will always be a down payment. There are companies that will actually submit two different bids, one for you, one for the insurance company. There will be different prices. This is how they get rid of the down payment. This is illegal.

Super Low Quote

When you receive a quote that is really cheap, this should automatically set off some alarms. They start low and then all of a sudden there are more repairs to be made. Yes, sometimes you don’t see an underlying problem until you start working. But these guys take it to another level with an increase in costs. It could be something they didn’t see or even claim an increase in the price of materials.

Ready to Work

Like any other industry, roofers have their downtimes and are looking for work. Most roofers will not start work the same day or even the very next. A lot of these people want to get in and get out. This is a sign of a scammer. They are usually from out of town and just want to get their money and run. If you run into this situation take a look at their plates or see if the phone number they give you is from out of state. This could be a sign of a roofing scam in the making.

Unseen Damage

Some of these people will try to point out damage that they say cannot be seen by a layman’s eyes. They will actually try to get permission to go up on the roof. Then try to take pictures of the damage (mostly what they caused). Don’t let anybody on your property or your roof that you didn’t invite.

These are just some of the scams out there and new ones will constantly be invented. Davis Roofing and Construction has been serving the Chicago area for over 60 years. We are licensed and insured like any legitimate roofing company. Call or contact us for a free quote. We will sit down with you and explain everything that needs to be done. We will answer any questions you may have and work with you like any legitimate roofing contractor should.

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  Financing Your Roof

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As in our previous post we talked about when is it time to replace your roof. If you have already made this decision to do so, how are you going to pay for it?

  • Cash
  • Personal Loan
  • Through Your Roofer
  • Home Equity Loan


Because of the fact that there are so many factors that go into the cost of a new roof, paying out of your pocket is not exactly for everyone. Knowing this, you could be tempted to cut corners. We are not just talking about wanting cheap materials, but it could also mean not getting you the look you wanted for your roof. We strongly advise to never to do this.

Personal Loans

Since you do own your home, you probably have the credit to take out a personal loan to finance a new roof. The downside of this is the higher interest rate. A lot of times this can raise the price of your new roof quite drastically and might not be a good choice for everyone.

Through Your Contractor

Financing through your contractor is sometimes the best option. They have the connections and know how to help you get the best options for your budget. Many times they are able to get you lower interest payments that can help save money in the long run.

Your contractor might even be able to get you a differed payment with no interest. This is the same like some car loans where you do not pay additional interest for like the first six months. They might even be able to get you in on a delay of payments and when the time is up you go back to your regular payments.

Home Equity Loan

This one can be tricky for some people and is a big decision for most. When you take out one of these loans, you are actually taking away possibly years of investment you have put into your house. Also remember that if you do not have a lot of equity in your home you are less likely to qualify for this type of loan.

Davis Roofing and Construction can help you go through all the options you have. Mostly we can get you the loan according to your needs and budget through us. After all, our best interest in not only doing a professional roofing job, we want to keep your home safe and protected. Call or contact us so that we can get that new roof on your house or building.

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  Is It Time to Replace My Roof

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Knowing when to replace your roof can be pretty tricky for most homeowners. There are many things to consider. Here we can go over some of the tell-tale signs.

  • Age
  • Composition
  • Stains
  • Granules
  • Broken Tiles
  • Mold

How old is Your Roof

If you don’t know how old your roof is, you should probably have it inspected.

What Your Roof is made of

Depending on what your roof is made of will determine its lifetime. Asphalt shingles can last a little past 20 years depending on the manufacturer of the shingles and the quality of the installation.

When it comes to clay or concrete tiles, they can last much longer. Most of these tiles come with a 50 year warranty. But, that still does not mean that there is nothing to worry about without regular inspection.

Stains inside the House

Take a look at the ceiling and walls inside your home. If you see stains, it could be likely that the roof is leaking. This might not always be the case, but this would be a good time to have it professionally inspected.

Tiny Granules Around

If you have an asphalt roof and notice tiny granules around the exterior of the house, this could be a problem. Take a look at the roof (from the ground) and see if there is any discoloring or uneven pattern of the shingles. While you are at it, look and see if any of the shingles are curling at the ends or see if they are buckled in any form.

Broken Tiles

If your roof happens to be made of clay or concrete tiles, do visual inspection (from the ground) and see if any tiles seem to be broken or cracked. This could be the sign of a leak or future leak.

Mold or Rot

Walk around your house and look for discoloration. This can be in the form of green or black looking patches. This means that the roof is not draining properly. If you see this, it is definitely time for an inspection of the roof.

No matter what seems to be the case, you should have your roof inspected regularly. Call or contact Davis Roofing and Construction for a qualified, professional inspection of your roof. Preventative maintenance and inspection can save money in the long run

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  Prepare Your Roof for Spring

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Winter is finally over and now it is time to prepare your roof for Spring. After all the snow it is time to get it ready for the rain and sun. The first thing you will need to do is an inspection of your roof and everything around it.

In the Gutters

One of the first things you should inspect are the gutters. Snow and ice can really damage the gutters. The ice is heavy and most gutter systems are not equipped to handle the weight. Look for separation from the house or fallen downspouts.

Clean the Gutters

The gutters can accumulate a lot of things during Winter. Fallen leaves get stuck in the snow. Then when the snow melts it might not drain properly. The gutters should be cleaned out. We always recommend to be careful if you do decide to go up on a ladder, or just get a professional to do it for you.

Look at the Trees

If you have any trees that are close to the house, make sure they are not touching the roof in any way. Snow and ice can cause fallen branches that you might not be aware of. If there are any branches touching the roof or have a chance of the wind blowing them close, they should be trimmed. Now that you can be outside and properly conduct this inspection, trim them down.

The Fascia

Ice dams will cause a lot of damage to your roof. At the same time you are inspecting the gutters, this is the perfect time to look at the fascia. Look for separation from the house. If you see separation, then you more than likely have damage to your roof and will need a formal inspection of the roof. When the fascia is damaged, you are more than likely to have leaks when the rain comes.

Go to the Attic

Go up in the attic. Look for signs of moisture. Remember that water flows downhill. If you see any moisture, puddles or any sign of water you have a problem. Also while you are up there, take a look for signs of light. If you see a filtration of light, then that means that there can possibly be a leak or future leak.
If you are looking for professional help or need a proper inspection, Davis Roofing and Construction is here to help. Call or contact us and we can do a formal inspection of your roof. Remember, preventive maintenance saves money in the future.

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  How Often Should Your Roof be Inspected

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Most people do not think about how often their roof should be inspected. Well, it depends on the type of roof you have. There are various types and depending on how our harsh weather treats us is key.

The weather here in Chicago is rough sometimes and depending on what kind of season we have plays a big factor.

What’s Missing

Even from a street view (or the backyard) take a look at the roof. Does anything look out of place or missing? Does there seem to be shadows under the tiles or shingles? Are some missing? This is definitely a sign to have your roof professionally inspected. Please be careful if you decide to go up on a roof. It is dangerous for someone that is not a professional.

Don’t Let the Sunlight In

Take a peek up into the attic. Look for traces of light coming in. This could be a sign of having faults in the roof. If you happen to see anything like this, call a qualified roofing company (like Davis Roofing and Construction).


When you see stains on your roof, you might have a problem brewing. Mold and lichen grow when there is a drainage problem. This could be an underlying problem that might be visible to the untrained eye. Another reason to call out the pros.

Common Holes

Up here a lot of us have chimneys and some skylights. Problems can occur in these areas. After all, it is a hole in the roof. Sealants and mortar deteriorate over time. This can lead into big problems in the future. This means an on top of the roof inspection (we talked about going on top of the roof already).


If there happens to be trees close to the house, you need to check up on that also. Not only can trees rub up against the edges of the roof, they also shed a lot of leaves. When leaves accumulate on the roof the rain and dew does not drain off proper. This leads to the mold and other things that can damage a roof.

So How Often

Spring and Fall are the best times for a visual inspection of your roof. These season changes are the easiest times to inspect your roof. If you see any of these kinds of problems, call a Professional roofer.

Davis Roofing and Construction have over 35 years in the Chicago area. Call or contact us for a free quote on a full roof inspection. Get a pro to inspect on a regular basis to avoid problems and costly expenses in the future.

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  Frost on Your Roof

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Frost on Your Roof

We all know that our roofs are the first line of defense when it comes to protecting the home. Winter is one of the roughest times for damage from frost on your roof.

Having frost on your roof is not always a good thing. This means that there is not enough heat getting into the attic. On the other hand, melting snow and frost can lead to ice dams forming in your attic. You need to find a healthy balance in order not to cause further damage to your roof.

There are a lot of people that will tell you that you need more insulation. This is not always true. Most often having too much insulation is a bad thing. It can lead to a buildup of moisture. This can cause health problems is mold starts to form.

Ensuring that the attic has proper ventilation is extremely important especially during the winter. Several problems can arise including:

  • Frost
  • Wood Rot
  • Mold and Moisture
  • Popped Shingles
  • Ice Dams

Having blocked vents will cause serious damage over time. Have your roof inspected regularly.

Moisture in your attic can lead to many problems. As mentioned before mold can form and lead to respiratory problems. Moisture also causes wood rot and other damage to various parts of the roof.
The best thing to do if you think that there is a problem with your roof, have it inspected by a qualified roofer. Davis Roofing and Construction has over 65 years in the roofing business. Our inspectors are more than qualified to give you recommendations. Take care of your roof before further damage is caused. Call or contact us and we will get your roof back into shape.

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  Ice Dam Prevention

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Preventing Ice Dams

It’s that time of year when ice dams can form on a house. Preventing ice dams is important for maintaining the structural integrity of your roof. In order to do this, we need to understand how and why they occur.

Heat in the Attic

There are several ways an attic can heat up in the winter. Most often it is from air leaks in the ceiling and walls. This allows the heat from the inside of the house to escape up into the attic. When that happens the snow at the top of the roof starts to melt and travel down to the edges of the roof where the temperature is much cooler. Then the water refreezes causing an ice dam.

Blocked soffit vents also contribute to poor attic ventilation. Sometimes this was done deliberately in attempt to heat up the attic. This definitely will cause ice dams and should never be done.

Temperature Fluctuations

The temperature during winter time can fluctuate. This causes the snow to melt and then refreezes. During the day the temperature rises and then at night the temperature falls again. When this happens, the water can seep under the roof and when it refreezes can cause the roof to separate.

The Sun

The radiant heat from the sun can also play a factor in ice dams. Even if the temperature during the day is below freezing, the sun’s radiant heat can cause the snow to melt. There is really no way to predict how much the sun will radiate on any given day.

Ice dams are a problem this time of year. Contact Davis Roofing and Construction for any of your ice dam needs. Remember, please don’t go up on the roof especially if there is a chance of having ice on it. Leave it to the professionals and we are here to help you out.

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