Attic Ventilation

The Most Effective Types of Roof Ventilation.

The advantages of roof ventilation.

When a roof becomes substantially damaged, many people put this down to poor materials or poor workmanship and while either might be true it is more often the case that there was inadequate roof ventilation. Not having the correct roof ventilation or the right level of roof ventilation frequently leads to a shortening of the roof’s lifespan. An average home produces four to five pounds of water vapor per day and if the home has poor roof ventilation this means that the vapor has nowhere to go. Instead it forms condensation on the wooden boards of the roof causing them to buckle, twist and contort. In turn, poor ventilation leads to a greater chance of wind damage and increased occurrences of inexplicable falling shingles or tiles.

There are two essential parts to effective roof ventilation.

It is essential that good quality roof ventilation consists of an exhaust as well as an intake. The temperature difference between the inside and outside of the roof can be massive and only through using an intake and an outlet can these temperatures be brought to a consistent level. Only have one type of roof ventilation is the equivalent of having no roof ventilation whatsoever and in some cases it can actually cause more damage to have only one than to have neither.

Types of roof ventilation.

There are a large number of different methods of providing adequate roof ventilation and more is definitely better. Each type of roof ventilation has it’s positives and it’s negatives so consult with your roofing contractor and decide between which is likely to be the better decision for your home in terms of both effectiveness and aesthetics. Having adequate roof ventilation can be the difference between a long lasting roof and having to replace it every ten years or so.

Dormer vents are one of the more commonly used forms of roof ventilation because they are relatively easy to fit and they can be installed at the back of the house where it is easy to keep them hidden. They give the perfect combination of adequate roof ventilation without being an eye soar. Possibly the most effective method is through the use of turbine ventilators, however they can look ugly when placed on your roof and become very difficult to look after once they’ve been installed for any length of time.

The Importance of Proper Attic Ventilation

There are many services that roofing contractors can provide to maintain your roof and protect your home throughout the harshest summer and winter seasons.  Attic ventilation services is one of the most important jobs that a roof repair contractor can offer.

During the summer months in the Midwest, an improperly ventilated attic can cause heat to build to temperatures in excess of 160°F!  This excessive heat creates downward pressures which penetrate the ceiling insulation and migrate into your living area below.  Moreover, You also cannot have a valid manufacturer’s warranty on your shingles without proper ventilation.  As such, not only will improper ventilation reduce the lifespan of your roof, it will also void your manufacturer’s warranty, and rest assured that shingle manufacturer’s will send an inspector to determine this should your roof need replacement under a warranty claim.

A correct attic ventilation system provides for a steady flow of outside air from the lowest part of the attic through the upper most part of the attic. As shown in the illustration, proper attic ventilation allows the attic insulation to perform at peak efficiency and help maintain constant temperatures in your home."Proper Attic Ventilation"

There are many roof ventilation styles available on the market. Choosing the right style for your home is critical to providing optimum air flow and function.

It is estimated that 9 out of 10 homes in North America do not have proper attic ventilation. Because most people are unaware that attic ventilation significantly impacts the longevity of their entire home, many roofs continue to become degraded and damaged.  Some of the common types of damage caused by improper attic ventilation include:

  • Premature aging of your roofing system
  • Roof deck warping and rotting of the wood frame
  • Buckling of shingles and felt
  • Mildew growth
  • Higher energy costs

At Waukesha Roof Repair we offer FREE inspections to determine whether your home has proper attic ventilation, as well as FREE estimates should your home need an attic ventilation upgrade?