ROSSELLI
ROOFING & SIDING, LLC
5 Roy Court
Wantage, NJ 07461
Tel (973) 702-8200
– or –
(973) 948-0025
Fax (973) 702-8207
NJ License #13VH00092600
Email
We Accept...
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ROSSELLI
ROOFING & SIDING, LLC
5 Roy Court
Wantage, NJ 07461
Tel (973) 702-8200
– or –
(973) 948-0025
Fax (973) 702-8207
NJ License #13VH00092600
Email
We Accept...
Proper attic ventilation is an important part of a healthy home–both for the structure and its occupants. This document explains how attic ventilation protects a home from moisture and how to install vents that will keep your home in good condition. There are a wide variety of sources of moisture in a home, from the building materials themselves to normal everyday activities. Cooking, bathing and washing clothes all release gallons of water vapor into the air, for example. That vapor isn't a problem inside the average home because the temperature inside the home is warmer than outside for much of the year. Warm air holds more moisture, in the form of water vapor, than cool air. The problem is that vapor gradually works its way out of the living area and into the structure. As warm, moist air cools, the vapor begins to condense into water droplets. If that happens inside an unfinished attic, for example, it can get insulation and framing materials wet. That not only reduces the value of your insulation but can cause mold, mildew and rot. |
During the summer, when the outside temperature is typically much higher than the inside temperature, attic ventilation serves a different purpose. An unfinished attic builds up a tremendous amount of heat, and if that heated air has no place to escape, it can make the inside of the house much warmer or cause an air conditioning system to work much harder to cool the house. Building codes specify the minimum amount of attic ventilation needed in a new home to prevent winter moisture buildup, but your summer needs are much greater. Also, older homes were often built with inadequate attic ventilation–at least by today's standards–and may need to be retrofitted with proper attic ventilation. A good attic ventilation system is designed for summer needs. It includes two types of vents: intake vents are placed along the soffits to allow fresh air into the attic, and exhaust vents are installed in the upper third of the roof to allow attic air to escape. The object is to create a continuous "wash" of air along the underside of the roof sheathing. The rule of thumb in the summer is that you should provide enough ventilation to completely change the air in your attic every six minutes. |
Because closed valleys aren't visible from the roof, the only sign of damage is usually a leak directly under the valley. A professional roofer should repair this kind of valley.
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Vent Flashing |
Vent Flashing |
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Custom Copper Chimney Flashing |
Rubberized Chimney Flashing |
Metal flashing is used to seal out water around the chimney, at vent pipes, along the valleys where two roof pitches meet, and sometimes over exposed windows. To prevent leaks at the flashing, inspect it every spring. If you see thin spots or gaps along a flashing joint, spread roof cement over the entire joint, applying it generously with a trowel. The flashing edge should be covered completely.
GAF
Master Flow Roof Mount Power Vent
GAF
Master Flow Solar Powered Roof Mount Power Vent
A ridge vent runs the entire length of the roof peak, blending into the roof line for a more attractive home. Years of research prove that a ridge vent with external baffles and an internal weather filter, combined with under-eave venting, is the most efficient system you can install.
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Ridge Vent on Shingles |
Ridge Vent on Cedar Shakes |
Ridge Vent on Metal Roof |
When you have a leak, you often think the roof itself is the culprit. But proper drainage via roof accessories -- gutters and leaders -- is paramount to preventing water from backing up and into your home.
Rosselli Roofing & Siding specialize in difficult assignments, frequently using extraordinary materials and demanding techniques. So, if you're looking for something unique or just a project done correctly, you've come to the right professionals to do the job—We've Got You Covered!™
Call or contact us today for a free estimate or more information.