Ridge Vent Installation Place, center and conform the Cobra®4'rigid vent over the slot with the vent resting firmly against the roof surface. For Cobra®Snow Country Advanced™ and Cobra®Rigid Vent 3™only, use the E-Z Nail™system. Grasp attached nails by the head and peel back. Rotate nail to vertical position for easy removal (Figure E).
How do you install a ridge vent on a roof?
Use roofing nails to tack the vent in place. Caulk any ends together if ridge length is longer than a roll of Cobra. Finally, install ridge caps over the Cobra Ridge Vent. Use the Cobra Smart Nails supplied in the package.
What are the dimensions of a Cobra vent?
Available in 11.5" (292 mm) & 9" (229 mm) widths. Cobra ® Rigid Vent 3™ Exhaust Vent for Roof Ridge allows heat and moisture to escape at the ridge.
What materials do I need to install a ridge vent?
Materials 1 8d nails 2 Ridge vent 3 1 1/2 inch or 1 3/4-inch roofing nails 4 Standard roof shingles 5 Shingle caps (for the shingle-over vent) 6 Polyurethane caulk
How do you cut a ventilation opening in a roof?
Cut the Ventilation Opening Jurin Roofing Services www.jurinroofing.com. The next step is to cut the wood decking back along the ridge. It is best to create a minimum of 1 inch of clearance on either side of the ridge board (ridgepole) to allow airflow through the opening and into the vent.
How do you install a ridge vent on an existing roof?
InstructionsRemove the Shingle Caps. Start by removing the nails holding the ridge cap shingles in place. ... Cut the Ventilation Opening. The next step is to cut the wood decking back along the ridge. ... Install New Field Shingles. ... Install the Ridge Vent (Shingle-Over Style) ... Install the Ridge Vent (Aluminum Ridge Style)
How much gap do you leave for a ridge vent?
If you are installing ridge vent panels, leave a 1/8 inch gap in between to allow for expansion.
Where do you nail ridge vents?
1:464:03CertainTeed Ridge Vent installation instructions - YouTubeYouTubeStart of suggested clipEnd of suggested clipCut slot to within 12 inches of junction point and run ridge vent from end of roof to but againstMoreCut slot to within 12 inches of junction point and run ridge vent from end of roof to but against crossing ridge vent chimneys. Cut slots to within 12 inches of chimney.
How do you install a mesh ridge vent?
1:163:15The Ridgevent Installation Video - YouTubeYouTubeStart of suggested clipEnd of suggested clipSide down onto the shingles firmly press the material. Against the roof surface as you continue toMoreSide down onto the shingles firmly press the material. Against the roof surface as you continue to remove the release. Paper. Be sure to roll out the ridge vent over. The entire length of the ridge.
Should ridge vent extend to end of roof?
If you're wondering whether a ridge vent should go all the way across a roof, it depends. You don't want to cut ridge vents all the way to the edge, but you can install vent caps all the way to the edge.
Should you see daylight through a ridge vent?
Yes, you should always see the light coming from the ridge vents when you look up at them from the side of the house. Light coming through the ridge vent can indicate that they are not clogged and that both air and light can freely travel through the ridge vent without becoming obstructed.
How do you tell if your ridge vent is installed properly?
In general, to find out if your ridge vent is installed properly, walk along its entire length and pull the vent slightly upward every few meters. Inspect the vent for any loose seams or fasteners; have them repaired as soon as possible. Even a nail slightly out of place can cause problems later on.
When should you not install a ridge vent?
During heavy rains, deep snow or high winds along with rain can enter through the vent and stain the ceiling below. Most manufacturers state that a ridge vent should not be installed on a roof with a pitch (slope) of 3-1/2 in 12 or less.
Can rain get in ridge vents?
Ridge vents prevent moisture problems by letting warm air out, but wind-blown rain can enter if the vents are damaged.
What is the best type of ridge vent to use?
Continuous ridge vents are more effective because they are installed at the peak of a roof's ridge, allowing for warm air to escape from the attic. It also works better because it creates a vacuum in your attic.
Do roof ridge vents leak?
With proper installation and care, ridge vents should not leak. However, improper installation leads to leaky vents. In some cases, installers will use the wrong nails or shorter nails to secure the vents to the structure.
Which is better ridge vent or roof vent?
Roofing contractors consider ridge vents to be the most preferred option when ventilating the roof of any home. Ridge vents are less invasive than other vent types while remaining the most cost-effective and energy-efficient compared to other roof vent types.
How do you tell if your ridge vent is installed properly?
In general, to find out if your ridge vent is installed properly, walk along its entire length and pull the vent slightly upward every few meters. Inspect the vent for any loose seams or fasteners; have them repaired as soon as possible. Even a nail slightly out of place can cause problems later on.
Should there be gaps in roof sheathing?
As of 2021, if plank decking has more than a 1/8” gap between the planks, your roof decking must be replaced per the manufacturer's installation instructions before the roofing material can be installed.
What is the minimum pitch for a ridge vent?
3:12Install the ridge vents on roofs with a minimum slope of 3:12, up to a maximum slope of 16:12. The ridge vent provides 18 sq. in. of net free area (NFA) per linear foot installed.
How wide should a ridge cap be?
The standard lengths for metal roof ridge cap are ten feet to twelve feet long. If you are overlapping ridge cap flashing have a 6 inch overlap. The most common width of a ridge cap is 7”X7” or 10”X10” and it's available with or without hems.
Why Do I Need a Ridge Vent?
A ridge vent is an important part of a home's roofing system. Installed at the peak of a sloped roof, the ridge vent allows damp, warm air to escape from the attic. A properly installed ridge vent increases energy efficiency and prolongs the life of your roof.
Preparing for Ridge Vent Installation
For a ridge vent to work properly, it must have adequate intake of fresh, cool air. As the ridge vent expels hot, humid air, intake vents feed fresh, cool air into the attic. Equal flow of exhaust and intake should be provided. Example: 900-square-foot attic / 150 square feet = 6 square feet of net-free area.
Installing a Metal Ridge Vent
Follow the steps explained in Removing the Cap Shingles and Removing the Wood Sheathing.
What vents are used on a roof?
It’s important to understand that a properly ventilated roof relies on a system of products such as Cobra Ridge Exhaust Vents that work in conjunction with soffit vents or fascia vents. To meet the minimum government ventilation standards - follow the 1 in 300 rule.
Do you need caulking for ridge vents?
There is no need for the caulking, end caps, rivets etc. that some ridge vents need. Simply bend to conform to the roof, and install. Second are the male-female tabs on the ends. All you have to do is align these tabs and butt the ridge vents together as you go across the ridge. Finally, there are the nail guide lines.
Can you overdrive Cobra nails?
Use the Cobra Smart Nails supplied in the package. Do not overdrive the nails. When using the nail gun version, attach the nail gun adapter to the end of the nail gun and use the 1 ¾” nails supplied in the roll. Be sure to disconnect air supply line prior to attaching the adapter.
How does a ridge vent work?
Be aware that a ridge vent is only one part of properly ventilating your attic space and roof. For a ridge vent to work properly, it relies on passive airflow, or intake air, coming into the attic space via soffit or gable vents or other attic ventilation. Show Full Article.
What is a ridge vent?
A very popular way to provide adequate ventilation in an attic space is with a ridge vent, sometimes called a continuous vent. Rather than interrupting the roof line the way other raised vents do, a ridge vent is so low-profile that almost unnoticeable. There are two primary types of ridge vents: shingle-over vents and aluminum vents.
What is an aluminum ridge vent?
An aluminum ridge vent has a mushroom-shaped profile combined with a wide flange on both sides that sits on top of the roof shingles. This aluminum cap is the finished product and does not require additional asphalt shingle ridge caps. The ridge of the roof is prepared similarly for both types of ridge vent.
How far should a truss framed roof be from the ridge?
If there is no ridge board present, as with some truss-framed roofs, the opening should be at least 1 inch from the ridge on both sides. Measure down from the ridge on each side and snap a chalk line to mark cutting lines on the roof decking.
How many nails are in a ridge cap?
For most asphalt shingle ridge caps, there are two nails in each ridge cap, one on either side of the ridge. Insert a flat pry bar under the shingle cap and lift up on both the shingle and the nail head to loosen the nail, then pry out the nail. Remove the shingle cap.
What size cap shingles are compatible with a ridge cap?
Cap Shingle Compatible: Available in two widths to work with, 12” (305 mm) or 10” (254 mm) width ridge cap shingles.
What is a Cobra 3?
Cobra ® Rigid Vent 3™ Exhaust Vent for Roof Ridge allows heat and moisture to escape at the ridge. It provides 18 sq. inches per linear foot (67,720 m 2 /lm) of net free ventilating area and its unique EasyTear™ Sizing feature allows you to hand-tear product in 3" (76 mm) increments — no knives necessary and less waste!
Does GAF cover lifetime shingles?
For other owners/structures, Lifetime coverage is not applicable. Lifetime coverage on shingles requires the use of GAF Lifetime Shingles only. Lifetime coverage on shingles and accessories requires the use of any GAF Lifetime Shingle and any 3 qualifying GAF Accessories.
What is ridge vent?
Ridge vent installation is used to provide cooling along the entire roof deck. Installation is performed from end-to-end and has a low profile to keep the home aesthetically pleasing. A ridge vent installation project will either involve a metal ridge vent or shingle-over vents.
What is the last phase of a roof ridge?
The last phase of this project includes cutting through the sheathing at the ridge, fastening down vent material, and nailing down roof-cap shingles.
How many nails per side in a shingle cap?
Each cap gets 2 nails per side. These particular caps have an 8-in. exposure, but you should consult your manufacturer’s instructions for your shingle type. At the end of the ridge, they remove the top layer from the second-to-last cap and nail it in place.
Do all homes require ridge vents?
While not all homes require ridge vent installation, you or your roofer may consider adding one during a reroofing project, particularly for an older home with gable vents. Gable vents rarely act as an effective ventilation system on their own, and ridge vent installation will improve energy efficiency.
