What is so important about proper ventilation in helping maintain the integrity, life span and warranties of my residential or commercial roof?

Modern home construction results in better insulated and tighter homes. This saves you money on energy bills, but also makes the need for a well ventilated attic more important. Proper ventilation is much more important than many may think.

As a professional roofing contractor in Northern New Jersey, we run across many instances where the severe weather changes have caused unnecessary damage due to improperly installed, or no ventilation. We can tell you firsthand, stories where a simple one or two hundred dollars on an initial roofing job would have saved the homeowners thousands.

Studies show that 90% of all roofs are under ventilated. Read on for an explanation of how improper ventilation can affect a roof, an attic, and ultimately an entire home.

Simple things like normal household activities can become potential problems in a poorly ventilated building.

Laundry Rooms
and Cooking

All these activities generate moisture that damages insulation, rafters, wood decking, underlayment and shingles if an attic isn’t properly ventilated.

Moisture soaked insulation becomes ineffective, thereby requiring excess energy usage. Condensation on wood leads to rotting and expensive repairs. In some cases, entire roof deck replacement is necessary.

Depending on the type of installation or conditions, we recommend from the following types of roof and soffit ventilation systems:


Roof Fan w/ thermostat (Power Vents)

Electric-powered attic vents use a thermostat control to monitor heat and moisture buildup inside the attic. Once properly connected these vents automatically turn on and off when necessary.

The power vents we install have a low-profile metal dome.

These power vents are unobtrusive when installed on the rear side of your home. We strongly recommend electric powered attic vents because they are one of the most effective ways to extend the life of your entire roof and structural system.

Humidistat (Power vent accessory)

Humidistat (Power vent accessory)With humidistat controls, power attic ventilators monitor heat and humidity levels in summer through winter for year-round attic protection from the damaging effects of moisture and heat buildup.

Ridge Vents (static vents)

Ridge vents are one of the most popular and aesthetically pleasing ways to ventilate your home. Ridge ventilation completely and continuously bathes an attic with fresh air. Installed along the length of the ridge line and under ridge cap shingles, a ridge vent system properly ventilates the entire attic. Fresh air enters the attic through soffit vents located beneath the eaves of the roof. The air moves through the attic and exhausts out through the ridge vent.
Ridge vents require no electricity to run, only the natural flow of air. Ridge vents are highly effective in cutting energy costs and prolonging roof life.

Soffet Vents (intake)

A balanced system of intake and exhaust airflow through the attic is the best way to create effective, year-round ventilation. In addition to installing ridge vents, which act as exhaust vents, be sure your attic has intake vents in the soffit/eaves. We install aluminum soffet vents in a variety of different sizes and colors.

Louvered Vents (Static Vents)

Similar to ridge vents, louvered vents require no electricity. They are commonly used on roofs with no peaks for a ridge vent, or to replace older louvered vents when re-roofing. Before ridge vents were available, louvered vents were the most common static roof vents.

Bathroom/ Kitchen Exhaust Vents

One common mistake made is installing a bathroom fan or kitchen exhaust without properly ventilating it outdoors.
Many times these components are vented directly into the attic, pumping the attic full of moisture every time you turn on the fan in your bathroom or hood over your stove.
The easiest way to correct this problem is to install ducting from your component to an exhaust vent on the roof. A great time to have this done is when you’re having your roof replaced.