6 Insulation Home Depot
Next, measure how far apart the rafters are. This distance should not exceed four inches. The ceiling joist should meet the roof rafters at the bottom of each baffle. After measuring the distance, it's time to install the baffles. Make sure you align and secure your baffles correctly. Spray foam should be used to seal the connections to prevent air leakage.
Continue to work your way up the rafterbay until the roof peak. If they reach the vents of the soffit, the baffles can be sealed. Spray foam is used for this purpose. Foam blocking can also be used to fill larger spaces. To caulk the baffles that reach the roof deck, you can also staple it on. You should also seal the seams between your overlapping baffles. Insulation can be applied to the top of your baffles.
The number of attic baffles you need depends on your roof's size and shape and how many soffits you have. For every attic vent, the space between your rafters that covers each vent should be covered. See how many baffles need to cover each of those spaces and multiply that by how many total spaces there are. More baffles create more airflow, but you can always start with less and add more later.