Installing Ridge Vent On Existing Roof

But should you add a ridge vent to a roof with gable.

Installing ridge vent on existing roof.

The roof construction is timber rafters rather than trusses and concrete tiles. Allow 6 inches to overhang the edge of the roof. There are several types of ridge vents mesh vents corrugated vents and baffled vents. Most ridge cap comes in pieces 10 6 long.

Mike keogh a specialist in energy conservation and ventilation from campbellford ont responds. Gable vents and ridge vents don t play well together since it short circuits the flow from soffit to ridge reducing the drying function. Add roof vents to ensure a long lasting roof over your head. If you re going to vent the attic vent the attic and massively with a very large soffit cross section at least some soffit area for each raft bay and a 30 50 smaller ridge vent cross section.

I will install grace over the entire dormer and shingle as usual. Has anyone ever installed a ridge vent on a low slope 2 12 roof. A ridge cap is normally installed only after all metal roof panels and any other trim are in place. Install the new ridge vents using long roofing nails.

Upgrading existing ventilation when reroofing is a smart move an opportunity that is missed all too frequently. The code here is massachusetts allows shingles on roofs with pitches of 2 12 or steeper so i m good there. This project guide is a combination of those two articles and it covers replacing the existing roof decking installing underlayment and ice dam protection laying the first row laying shingles in the field flashing ridge shingles and vents and more. Do these work well with gable vents or about the same a ridge vent.

In other words it s put on last the cap to the job. Secure the ridge cap using a drill and 2 inch galvanized metal screws. Drill a screw through the metal cap and foam closure strip at each rib. A roof vent installation kit will provide everything you need to vent your roof in one convenient package.

And finally the 44 linear feet of newly installed ridge vent on the main roof of this 100 year old building constructed with individual board roof sheathing was perfect. And below right is the 12 garage section of ridge vent. We now have to install a ridge cap with the vented ridge material. Baffled vents are suggested because they prevent airflow back into the attic through the ridge vent while still allowing hot air to escape.

To be clear we have 2 gable vents about 12 x 16 each and 6 soffit vents about 2 x 12 each. Install the first metal ridge cap end piece on one end of the ridge line. Allow space for the edge of the vent opening where it will rest on the roof. If your roof is not well ventilated ask a roofing contractor about improving roof ventilation with ridge soffit or gable end vents.

Metal roofing ridge cap is the trim placed along the roof s ridge the peak where two roof slopes meet up. All of these roof vents can be installed in an existing roof or when your roofing is being replaced. When determining the placement of the roof vents measure the vent housing and mark off the space on the roof. Okay i guess the ridge vent is out.

Press the metal ridge cap down firmly onto the foam closure strip. I am planning on building a dormer that will come off the ridge with a 2 12 roof. This includes an air gap between the sarking and the insulation done plus vents equivalent to a 5mm gap at eaves level should be easy enough plus the same at high level either 5mm equiv along the ridge or double that at a slightly lower level. Additionally many contractors who install new vented soffit skip the crucial step of actually drilling sufficient ventilation holes.

Now we re ready to deal with a vented ridge cap. A couple of weeks ago we published a two part series showing how a local roofing contractor shingled a roof with architectural shingles. That being said yes you should add ridge vent to your roof when you have it re shingled. I m going to use an abc vented ridge material that s been die cut to fit the sl 16 panel.

We live in california and it gets awful hot in the attic. Installing a vented ridge cap. Below left is the 24 section of intersecting roof ridge vent. How about installing some dormer vents or turbine vents on top of the roof.