Retrofit Attic Venting

In some circumstances you can have less but we recommend the 1 150 ratio.

Retrofit attic venting.

Dia throat opening and a 10 watt solar panel providing energy to 4 ec fans on sunny days to increase the cfm cubic feet per minute of 740 at 0 1 sp of air flow performance. It alleviates moisture in the winter and heat in the summer to extend roof membrane life. Inside the attic behind existing gable and eave vents the matrix can be cut to size and fastened to the existing 1 4 screen. Attic ventilation works on the principle that heated air naturally rises primarily utilizing two types of vents.

Attic will need 10 sq. If you do not know what rafter vent is here is a video. Basically because of the trusses we have to use blown in insulation instead of laying down fiberglass batts. The keepa attic vent is used for ventilating attics and or plenum as a roof exhaust vent or as an air intake roof vent.

The keepa attic vent is built exclusively for flat roof ventilation roof pitch is 2 12 or less. Connect the two cuts. Next bore a 3 4 or 1 in dia. So a house with a 1 500 sq ft.

Of venting ideally about half placed high on the roof and half in the soffits. The honeycomb matrix along with the screen mesh sold together can be used in a variety of retro fit applications. With v baffe s design you can quickly and easily retrofit cathedral and vaulted ceilings that would otherwise have been next to impossible. Hole through the soffit right between the lines and measure the.

Retrofit attic baffles for cathedral and vaulted ceiling ventilation for purchase information click here attic ventilation for cathedral and vaulted ceilings require attic baffle vents. Model asf 12 rf has a 12 in. And due to the soffit venting system we need to retrofit rafter vents to ensure adequate air circulation in the attic. Most building codes require 1 sq.

Start by using a chalk reel to snap two parallel lines down the center of the soffit. Intake vents located at the lowest part of the roof under the eaves allow cool. Of venting technically net free vent area or nfva for each 150 sq. How to install soffit vents make two parallel lines.