A: At the soffit edge, yes. Install every other to every third bay.
A: Do you mean how do you determine how many rafter vents you need to install in your attic? Sometimes it is easiest to count the openings between the trusses in your attic. Our 22-inch vents fit between a 24-inch on-center space. If you have 16-inch on-center openings, split our 22-inch vents in half. Staple the rafter vent to the roof decking. A conventional attic will typically need only one or two vents per opening, depending on the depth of your insulation. The purpose of the vent is to channel air through the insulation. The vent should reach from above the top plate to a few inches above your insulation.
A: For the rafter vents simply count the spaces between the rafters if they are spaced on 24" centers, or the vents are easily divided in half if your rafters are on 16" centers
A: These are Styrofoam. There are no cardboard pieces
A: You can purchase the windblock separately. Or you can purchase the Durovent Baffle that is the windblock and vent all in one.
A: The very is in one piece but it isn’t cardboard. It’s more like an egg carton.
A: No it is not included with the purchase I made. I purchased the full length product and their shorter version with the folding windblocker.
|Brand||Durovent||AWF PRO||Plasti-Grip||AWF PRO|
|Name||22 in. x 4 ft. Rafter Vent (10-Pack)||PTFE Non-Stick Coated Foam Dispensing Gun||1.75 in. ci Prong Washer||2 ft. Barrel Foam Dispensing Gun with Swivel Tip|
|Insulation Accessory Type||Rafter Vent||Foam Dispensing Gun||Fastener||Foam Dispensing Gun|
|Insulation Features||Water Resistant||Fire Block Rated||No Additional Features||Fire Block Rated|
|View Product||View Product||View Product||View Product|