The Lomanco 770D roof vent is an exhaust vent designed to eliminate heat and moisture from attics when used in conjunction with intake vents. Lomanco also manufactures Omni Series and Aluminum Ridge Vents, offering various styles and installation methods. These vents are designed for ease of installation and compatibility with a range of roof pitches. This article details the installation procedures for the 770D, features of the Omni Series and Aluminum Ridge Vents, and relevant considerations for proper implementation.
Lomanco 770D Installation Procedure
The installation of the Lomanco 770D roof vent requires specific steps to ensure proper functionality and adherence to safety guidelines. Prior to beginning installation, it is important to read the provided instructions carefully and comply with all local codes and standards.
- Vent Spacing: Vents should be evenly spaced along the rear slope of the roof, and centered along the roof length. For installations involving two vents, each vent should be located one-quarter of the distance from each end of the roof. When installing three vents, one should be positioned in the center, with the remaining two located one-sixth of the distance from each end of the roof.
- Rafter Location: Locate rafters by tapping the roof with a hammer. Once identified, measure 7-11/16 inches on either side of the rafter centerline. These measurements mark the intended positions for the vent openings.
- Vent Positioning: Locate the vent holes approximately 24 inches (with a maximum of 36 inches) down from the ridgeline. This positioning ensures the top of the vent remains below the ridgeline. The vent location should be centered over a rafter.
- Circle Scribing and Drilling: Using the marked positions as the center point, scribe two 9-1/2 inch diameter circles. Drill starter holes within these circles using a 1/2-inch drill bit.
- Circular Opening Creation: Employing a keyhole saw or an electric saber saw with a sharp, coarse blade, cut two 9-1/2 inch diameter circular openings, starting from the drilled starter holes.
Required Installation Materials
The following items are necessary for the installation of the Lomanco 770D roof vent:
- Keyhole saw or saber saw
- Utility knife
- Drill with a 1/2-inch drill bit
- Hammer and roofing nails
- Tape measure
- Roofing cement
- Compass or string
A warning is provided regarding sharp edges exposed during installation, recommending the use of gloves and other appropriate safety equipment to prevent injury.
Lomanco Omni Series Ridge Vents
Lomanco Omni Series Ridge Vents are available in roll and stick versions. The roll version comes in lengths of 20 and 30 feet, while the stick version is available in 4-foot lengths. These vents are designed to fit roof pitches ranging from 2/12 to 16/12.
The Omni Series Ridge Vents feature supported nail holes spaced every foot, preventing crushing during installation. Molded-in visual nail lines and center lines, along with patented fan-folded end plugs, eliminate the need for additional accessories, connectors, or alterations. The Lo-Omni style is designed for installation using a nail gun.
Lomanco Aluminum Ridge Vents: LPR and VUR
Lomanco offers two styles of Aluminum Ridge Vents: the LPR and the VUR. Both are constructed from embossed aluminum with a finish intended to enhance strength, paint life, and aesthetic integration with shingles. Both vent styles offer a Net Free Area (NFA) of 18 square inches per foot.
LPR Ridge Vent
The LPR Ridge Vent is available in 8-foot and 10-foot sections and is adjustable to accommodate roof pitches from 3/12 to 12/12. It features a large 2-inch-wide nailing flange.
VUR Ridge Vent
The VUR Ridge Vent is available in 10-foot sections and is adjustable to fit roof pitches from 3/12 to 8/12. It also includes a large 2-inch-wide nailing flange and engineered weather infiltration protectors at each connection, along with exterior wind baffles. A copper version of the VUR-10 is also available.
Aluminum Ridge Vent Specifications
The following table details the specifications for the LPR and VUR Aluminum Ridge Vents:
| Model | Color | Length (ft.) | NFA (in.2) | CTN. QTY. | CTN. WT. (lbs.) |
|---|---|---|---|---|---|
| LPR-8 | MF-WH-BR-BL-WB | 8 | 144 | 10 | 52.5 |
| LPR-10 | MF-WH-BR-BL-WB | 10 | 180 | 10 | 66.5 |
| VUR-10 | MF-WH-BR-BL-WB GR | 10 | 180 | 10 | 48.0 |
| VUR-10 | Copper | 10 | 180 | 6 | 78.0 |
(Note: Color codes MF-WH-BR-BL-WB and GR are as provided in the source material and are not further defined.)
Common Features of Lomanco Ridge Vents
Several features are common across the Lomanco Ridge Vent product line:
- Large 2-inch-wide nailing flange for secure attachment.
- Easy installation with male/female connections, eliminating the need for straps (optional straps are available in various colors).
- Aerodynamic design incorporating a three-baffle system for complete weather protection.
- Engineered weather infiltration protectors (specifically for the VUR model).
Conclusion
Lomanco offers a range of ridge vents designed to provide effective attic ventilation. The 770D requires careful measurement and cutting, while the Omni Series and Aluminum Ridge Vents prioritize ease of installation with features like pre-defined nail lines and connecting mechanisms. Proper installation, adhering to local codes and safety guidelines, is crucial for maximizing the benefits of these ventilation systems. The provided documentation details specific procedures and specifications for each vent type, enabling informed selection and implementation.
Sources
The provided source material is insufficient to produce a 2000-word article. Below is a factual summary based on available data.