What Happens When a Roof Doesn’t Have Proper Ventilation?

One of the most important aspects of the way your North Carolina roof is designed and built is proper ventilation. You simply cannot over-estimate its importance. What happens when a roof doesn’t have proper ventilation? Improper ventilation allows formation of condensation, moisture accumulation, and damage to the roof deck and, eventually, to the stability of the roof. Improper roof ventilation can also affect the health of your family.

The industry standard for roof ventilation to provide 1 square foot of intake ventilation and 1 square foot of exhaust or outflow ventilation for every 300 square feet of attic space, provided the area is insulated with a vapor barrier. If the area is insulated without a vapor barrier, the requirement doubles.

Proper ventilation of the roof and attic of a home achieves several important functions:

It makes the attic space cooler
It makes the home more energy efficient
It prevents condensation and accumulation of moisture on the inside of the roof deck, and prevents rotting of the roof deck
It reduces the risk of fire
Several types of vents can be used to properly ventilate the roof of your home. Roof ridge vents are placed along the ridge line of the roof. Ridge vents are used for exhaust or outflow of moisture, heat, and stale air. Soffit vents and Eaves are placed at the lower extremes of the roof and provide the intake ventilation. If you live in an older home, your roof might not be constructed for roof ridge or soffit vents. Older homes were not built with the tight seals of today’s houses. There were cracks and openings around windows and doors, chimneys and other openings. These cracks and openings allowed fresh air to flow into the house. On the principle that hot air rises, the accumulated heat and moisture would rise to the attic and out the roof vents.

Without adequate ventilation, moisture rises with the hot air and forms condensation on the inside of the roof deck. This moisture is released into the air inside the house from bathing, cooking, plants, laundry and other causes. When the condensation forms on the roof deck, it begins to rot the wood. This introduces mold spores into the air, as well as damaging the wood. The result, if the problem is not noticed and repaired, can be destruction of all or part of the roof deck and creation of unhealthy air inside the house.

In our increasingly airtight homes, the importance of proper ventilation in roof construction cannot be over-emphasized. It is important to take the time and do the research to understand the ventilation needs for your North Carolina and how best to meet those needs.

Benefits of Roof Inspection

Whether you already own your Southport home or are looking into buying one, one task to consider for proper house care is a thorough inspection of the roof. The roof is what keeps the rest of the home secure and protected from the elements. Having a professional check the current state of a roof can help you save money and headaches, depending on your situation.

Why get your roof inspected? As a homeowner or potential buyer, it’s important to know everything you can about the place you live.

Prevention: Regular roof evaluation – it is recommended to have a professional examine your house top every two or three years – can help determine if minor problems and leaks stand to become major issues in the future. These checks can spot damage by weather or rodents or other elements and allow you plan for timely repairs that may not cost you as much now as a larger fix would have down the road.

Value: If ever you think of selling your  North Carolina house, a buyer is going to want to know the condition of the roof. As it is the objective of the buyer to choose a home that doesn’t require extensive repair, should your roof require great attention it can make selling a challenge. Regular inspections can alert you to repairs necessary before you put your home on the market, and they can help evaluate the selling price.

Renovation: Say you wish to remodel your home and have an addition built. Even if you don’t plan to add a story to your house, a new room will require extension of your roof, and you want to be certain the structure matches your present one. Regular inspections can help you figure out what needs to be done to ensure the roof is even and strong.

Just a small payment for inspection can save you larger bills for repairs if you leave roof problems unnoticed and unattended.