Ventilation & Vents

Cor-A-Vent V-300 Ridge Ventilation System
  • Cor-A-Vent

    Cor-A-Vent V-300 Ridge Ventilation SystemCor-A-Vent V-300 Ridge Ventilation System

    V-300E in 11″ and 8 1/2″ widths are the same great product as regular V-300 but with an added Enhanced Snow Screen™ to prevent fine snow from entering the ridge vent.

    The V-300 product line is our lowest profile ridge vent line. It works equally well under shingles as well as shakes or slate roofing. V-300E products are ideal for hip use. The low profile make the hip vent blend in with the roof. If you are looking for a low profile ridge vent that still provides plenty of ventilation our V-300 product line is your answer.

    Key Benefits

    • 13.5 sq. in NFVA per lineal foot
    • 5/8 inch low profile design
    • Use V-300E as a hip vent
    • 3 widths to choose from: 11″, 8 1/2″ and 7″
    • Use on all slopes from 3/12 to 16/12
    • Crush Proof Design
    • Made from heat resistant polypropylene

    Cor-A-Vent V-400E Ridge Ventilation SystemCor-A-Vent V-400E Ridge Ventilation System

    • Our NEW V-400E – with enhanced snow screen
    • V-400E – Certified 17 sq. inches NFVA per foot
    • Exceeds all national building codes for ventilation
    • Easy to handle 4′ pieces – 12 pieces (48 l.f.) per carton
    • 2 1/2″ roofing nails & 4 end caps included with V-400E
    • Can be applied on hip roofs
    • More flexibility on steep pitch roofs – now works on 16/12 pitch
    • Solid base provides a weather-tight seal under vent
    • Cuts with a utility knife – no waste
    • “Live” flexible hinge – makes it easy to match roof pitch
    • Leaves a well defined ridge – “no hump or domed shaped” peak
    • Won’t crack or shatter in cold weather application
    • No baffles to clog with leaves or pine needles
    • Proven by 30+ years of “On the Roof Performance”
    • Lifetime Warranty

    Key Benefits

    • 17 sq. in NFVA per lineal foot
    • Enhanced Snow Screen™ design to prevent fine blowing snow from entering the vent
    • Can be used with shingle and metal roofing applications
    • Use on all slopes from 3/12 to 16/12
    • 2 widths to choose from: 11″ and 8 1/2″
    • Made from heat resistant polypropylene
    • Crush proof design
    • Can be used with Asphalt Shingle and Metal Roof applications.
  • Lomanco®

    Omni Series Ridge Vents

    Lomanco® Omni Series Ridge Vents are available in two versions and two styles.

    1. The roll versions comes in easy to handle 20 and 30 foot lengths, while the stick version comes in 4 foot lengths.
    2. The regular Omni style is traditionally installed using a hammer, while the Lo-Omni style, with its low profile, can be installed using a nail gun.

    All Omni Series Ridge Vents come with a Limited Lifetime Warranty. The engineered material guarantees it will last as long as any shingles you use. The Lomanco® Lo-Omniroll® can also be used on metal roofs in conjunction with the Lomanco® Metal Roof Ridge Vent Kit.


    Lomanco® Static Roof VentsStatic Roof Vents 750-E

    Lomanco provides a complete line of Static Roof Vents from which to choose. Lomanco® Static Roof Vents are available in two designs, Slant Back and Pan Style, to fit all of your ventilation needs. The Slant Back design is available in Aluminum, Plastic, and Galvanized finishes. Lomanco® Pan Style Series consists of the 550, 600, and 135 Roof Vents and is available in aluminum finish only.


    EVA-34 Vent AdapterExhaust Vent Adapter EVA-34

    The EVA-34 works with any Static Roof Vent while blending with existing accessories. The EVA-34 is designed to fit a 3” or 4” flexible duct.

    The EVA Combo Vent is a Lomanco® 730 Static Roof Vent that comes with an EVA-34 adapter.


    Lomanco® Gable VentsGable Vent Exhaust System

    Vari-Pitch Adjustable Vents: Lomanco makes it fit – whatever the pitch.

    Years ago, with the ingenious invention of the adjustable gable louver, Lomanco was born.

    All Lomanco Vari-Pitch Adjustable Louvers are constructed entirely of heavy gauge aluminum. Units are completely assembled, ready to install.

    To determine the size needed, just measure down along the roofline from the peak of the roof to the frame. The appropriate size louver will adjust to the opening in seconds, and can be installed securely in minutes.


    Lomanco® Intake VentsIntake Vent Systems

    The intake system must provide as much as or more than the exhaust system in Net Free Area.

    Inadequate intake is the #1 cause of attic ventilation system failure. Specifically, inadequate intake results in extreme heat buildup in the summer and severe weather infiltration and moisture problems in the winter.

    Proper vent chutes should be installed before blown-in insulation to prevent choking your intake system. A good rule of thumb is to place one between each set of rafter tails in order to maximize intake air.

    If maintenance free vinyl/metal under eave panels are used, the vented panels should be installed continuously around the under eave portion of the house.

    If the under eave width prohibits the use of cornice or strip vents—never use an exhaust louver as an intake vent. The most logical solution would be to install SV-10.

    The 105 Continuous Soffit Vent, SV-10 Starter Vent, and CV-4 Cirk-L-Vents are also available in copper.