Vents For Metal Roof

Vents For Metal Roof

Roof Vents Roof vents are extremely important when it comes to attic ventilation. In the summer, roof vents will reduce the air temperature, which reduces air conditioning, and in the winter they reduce the humidity level of the cold air, which in turn reduces costs for heating. Roof vents are available in many styles and materials. Installing vents on the roof allows outside air to quietly pass through the intake vents and into attic space, which rises up through the roof vents. This becomes particularly important during warmer months when the attic of the home can become extremely hot. The heat build up in the attic increases the temperature in the house making the air conditioner work harder. This build up can also result in expensive repairs to the roof from cracking wood and premature aging. The roof vents allow increased fresh air exchanges, lowering utility bills and cooling down the house. The most common roof vents are manufactured in galvanized and painted steel, but can be manufactured in stainless steel, copper, aluminum, and high density plastics. There are also many styles and models to choose from depending on the ventilation requirements of the attic. They Include: Peak Vents, Ridge Vents, and Gable Vents It is important to choose the right roof vent to assure proper attic ventilation. FAMCO manufactures a wide variety of roof vents in plastic (BVDS/FA50) and metal (BK, JV, JVO, CRV, GBV, LRV). Plastic Roof Vents FAMCO plastic vents (FA50 / BVDS) are made from High Density Polyethylene (HDP). HDP is one of the most versatile and widely used plastics available. Outdoor integrity is maintained in all of our plastic products by the addition of UV inhibitors which protect the material from deterioration in sunlight. Our colors are added with stabilizers during the manufacturing process to prevent fading. These vents are resistant to cold, heat and ultraviolet rays. They will not rust, dent, fade or crack and are built to outlast most roofing materials. The vent has a low silhouette with a screen molded in to prevent bird nesting. This product is a standard residential roof vent with fifty square inches of net free area. PBK and GBK Vents The PBK and GBK vents are designed to use with bathroom or kitchen venting systems. These vents come with a damper (to prevent backdraft), with a screen or without a screen (for a roof top dryer vent application), and with or without a stem for flex or hard pipe connections. J Vent The JV is for use on any roofing material. It provides a low silhouette and is open on two sides for better air flow. It helps eliminate moisture and heat buildup. The JV can also be used for hard connect exhaust applications. The J Vent can be produced with several different options – curb mount, larger flange size, tall throat (for greater clearance between base flange and hood for flat roof applications) with a bottom stem and a hood with rounded or pinched corners. The JVO38 is one of the best built and most reliable on the market. It features 38 square inches of open space, insect screen, low silhouette and a removable hood for access to the attic area when needed. It is open on all four sides for better air flow and unrestricted venting to help eliminate moisture and heat buildup. Continuous Ridge Vent The Continuous Ridge Vent (CRV) provides optimal ventilation for the price when used with proper soffit venting, The Continuous Ridge Vent eliminates the “spotty” ventilation found with other types of gravity vents but does not use the power of certain fan vents. The CRV features a low silhouette and weather tight construction. Quality constructed of heavy 28 gauge material to withstand years of hard weather. The CRV comes with end caps and adapters. Globe Vent The Globe Vent (GBV) is an economical gravity ventilator for use on residential, commercial and industrial applications. The GBV features watertight construction and a low silhouette while offering positive draft for good air flow. The draw bolt collar (available in sizes up to 12”) offers secure fit, yet is easily removed when needed. Louvered Roof Vent The LRV50 (Louvered Roof Vent) is a great heavy duty vent for use on pitched roofs. This Slant Back Roof Vent is one of the best built and most reliable on the market. It features 50 square inches of net free area, louvers on three sides, slant back and a low silhouette. This vent works best when used with soffit or gable end venting.
vents for metal roof 1

Vents For Metal Roof

Scott Hailstone/E+/Getty Images 1. Metal Roofs Are Not Just In Architectural Digest AnymoreMetal roofs used to be found only on architect-designed houses. No longer a novelty, metal roofing is increasingly found on more conventional houses.2. Metal Roofing Can Be Installed Over Your Existing RoofMetal roofs can be installed over your existing roof without tearing off shingles. While shingle removal is the preferred route, it is also messy and raises the cost of the job.  Water vapor in conjunction with a metal roof on existing shingles is a problem.  Water vapor build-up and attendant mold and rot are not reasons alone to avoid installing metal over shingles. Roofers can install a vented metal roof can be installed over existing shingles which would eliminate the vapor problem.Also, installing the metal roof on top of furring strips (1×3's or similar) will raise the metal and provide an air pocket between it and the shingles.3. They Are No Noisier Than Asphalt RoofingSurprisingly, properly installed metal roofing is no noisier than any other type of roof. Metal roofing is typically installed over a solid substrate. Additionally, the attic and insulation provide a sound barrier. If you wish to install metal roofing over your existing roof, the metal roof will most likely be raised over the existing roof by means of furring strips. These furring strips will create an air pocket which will further deaden sound. 4. Metal Roofing Does Not Attract Lightning More Than a Conventional RoofsYes, it does seem like metal roofing would attract lighting, but this is faulty logic.According to a technical bulletin from the Metal Construction Association, “Metal roofing does not in any way increase [the risk of a lightning strike.” Not only that, but if metal roofing does happen to get struck by lightning, it is less combustible than conventional roofing materials such as shake shingles.As the bulletin asserts:Because metal roofing is both an electrical conductor and a noncombustible material, the risks associated with its use and behavior during a lightning even make it the most desirable construction available.5. Their Warranted Lives Are Equal To Conventional Roofing ProductsIf you live in fire-prone areas, such as Southern California, metal roofing will extinguish any embers. Insects such as termites can never eat metal roofing.  Metal roofing is impervious to rot and mildew.Because it conducts heat quickly from the sun, snow slides off more quickly than with conventional roofing.Even so, most metal roofing manufacturers will warrant their products only for an average of 30 years, which is about the same as conventional roofing manufacturers.6. Metal and Low-Pitched Roofs Are Like Peas In a PodBecause metal roofing comes in larger sheets and the pieces are so tightly sealed together, you can install metal roofing on gently pitched roofs.7. In Severe Hailstorms, They May Be Irreparably DamagedMetal roofing will weather pea-sized hailstorms. But if your area ever experiences severe hailstorms with larger stones, your aluminum or copper roof may get dented. Steel is harder and will fare better in the event of a hailstorm.8. Modifying Metal Roofing Is Next-To-Impossible For HomeownersAsphalt shingles are easy to replace because they are available at your local home improvement store and because you are working with small pieces.Metal roofing, on the other hand, is generally available only through select retailers. Also, the large sheets are difficult to handle and fabricate unless you are a professional.9.  Ridge Venting Will Be More ObviousOn a shingled roof, the continuous ridge vent (CRV) is the strip of shingle-like material that runs the entire length of the peak of the house, masking outflow holes.On composite roofs, you have seen this countless times but probably never noticed.  One reason is because the CRV lies very flat.  Also, the two materials blend in with each other so well.On your metal roof, the CRV will be metal and will stand out a bit farther and be more obvious.  However, these thick, prominent lines or ridges are inherent in metal roofs and add to their distinctive look. Read More
vents for metal roof 2

Vents For Metal Roof

1. Metal Roofs Are Not Just In Architectural Digest AnymoreMetal roofs used to be found only on architect-designed houses. No longer a novelty, metal roofing is increasingly found on more conventional houses.2. Metal Roofing Can Be Installed Over Your Existing RoofMetal roofs can be installed over your existing roof without tearing off shingles. While shingle removal is the preferred route, it is also messy and raises the cost of the job.  Water vapor in conjunction with a metal roof on existing shingles is a problem.  Water vapor build-up and attendant mold and rot are not reasons alone to avoid installing metal over shingles. Roofers can install a vented metal roof can be installed over existing shingles which would eliminate the vapor problem.Also, installing the metal roof on top of furring strips (1×3's or similar) will raise the metal and provide an air pocket between it and the shingles.3. They Are No Noisier Than Asphalt RoofingSurprisingly, properly installed metal roofing is no noisier than any other type of roof. Metal roofing is typically installed over a solid substrate. Additionally, the attic and insulation provide a sound barrier. If you wish to install metal roofing over your existing roof, the metal roof will most likely be raised over the existing roof by means of furring strips. These furring strips will create an air pocket which will further deaden sound. 4. Metal Roofing Does Not Attract Lightning More Than a Conventional RoofsYes, it does seem like metal roofing would attract lighting, but this is faulty logic.According to a technical bulletin from the Metal Construction Association, “Metal roofing does not in any way increase [the risk of a lightning strike.” Not only that, but if metal roofing does happen to get struck by lightning, it is less combustible than conventional roofing materials such as shake shingles.As the bulletin asserts:Because metal roofing is both an electrical conductor and a noncombustible material, the risks associated with its use and behavior during a lightning even make it the most desirable construction available.5. Their Warranted Lives Are Equal To Conventional Roofing ProductsIf you live in fire-prone areas, such as Southern California, metal roofing will extinguish any embers. Insects such as termites can never eat metal roofing.  Metal roofing is impervious to rot and mildew.Because it conducts heat quickly from the sun, snow slides off more quickly than with conventional roofing.Even so, most metal roofing manufacturers will warrant their products only for an average of 30 years, which is about the same as conventional roofing manufacturers.6. Metal and Low-Pitched Roofs Are Like Peas In a PodBecause metal roofing comes in larger sheets and the pieces are so tightly sealed together, you can install metal roofing on gently pitched roofs.7. In Severe Hailstorms, They May Be Irreparably DamagedMetal roofing will weather pea-sized hailstorms. But if your area ever experiences severe hailstorms with larger stones, your aluminum or copper roof may get dented. Steel is harder and will fare better in the event of a hailstorm.8. Modifying Metal Roofing Is Next-To-Impossible For HomeownersAsphalt shingles are easy to replace because they are available at your local home improvement store and because you are working with small pieces.Metal roofing, on the other hand, is generally available only through select retailers. Also, the large sheets are difficult to handle and fabricate unless you are a professional.9.  Ridge Venting Will Be More ObviousOn a shingled roof, the continuous ridge vent (CRV) is the strip of shingle-like material that runs the entire length of the peak of the house, masking outflow holes.On composite roofs, you have seen this countless times but probably never noticed.  One reason is because the CRV lies very flat.  Also, the two materials blend in with each other so well.On your metal roof, the CRV will be metal and will stand out a bit farther and be more obvious.  However, these thick, prominent lines or ridges are inherent in metal roofs and add to their distinctive look.

Vents For Metal Roof

Vents For Metal Roof
Vents For Metal Roof
Vents For Metal Roof
Vents For Metal Roof