In the attic the idea is to create an upward flow of air.
How to create venting in attic of a bungalow.
This yields a total area of 1 104 square feet.
Intake vents located at the lowest part of the roof under the eaves allow cool air to enter the attic.
Hot air exhaust vents located at the peak of the roof allow hot air to escape.
Cool air flows in through vents in the eaves and out through vent s nearer to or at the peak of the roof.
In the crawlspace cross ventilation is used.
Next lay the strip vent down on a flat wood surface such as a plywood sheet or long 2 x 4 and drill 1 8 in dia.
Attic will need 10 sq.
In some circumstances you can have less but we recommend the 1 150 ratio.
Your roof vents may not look.
Then divide the total area by 150 to find the total amount of vent space needed for your attic.
Jones has an attic space that measures 23 feet by 48 feet.
Photo by merle henkenius.
To determine the area multiply the length times the width in feet.
With the help of an assistant raise the vent up to the soffit and center it over the cutout slot.
Most building codes require 1 sq.
Adding a slotted piece of wood or siding to this area allows air to flow in and out of your attic.
If you don t see any attic vents on the roof or in the eaves you need to add some.
Drip edge vents hang out several inches past the edges of the roof allowing you to trim 1 inch from the top of the fascia to allow air into the attic.
Look at your eaves and roof.
Touch your ceiling on a warm sunny day.
Of venting ideally about half placed high on the roof and half in the soffits.
Space the holes 12 to 14 in.
If you want or need to introduce extra living space into your home then a loft conversion could be the answer.
A hot ceiling tells you that the attic is acting like a solar oven raising your cooling bills and.
Let s look at the following example.
You can also contact your local municipality to check on building code in your area.
Most building codes require a ratio of 1 150 ventilation space to attic floor space.
Another plastic venting product fits under.
Because a well designed attic room will not only create extra habitable space to help free up a busy household but whether you want to add an extra lounge bathroom guest bedroom or even open plan kitchen to your home it s a really clever alternative to an extension that could.
So a house with a 1 500 sq ft.
Since gable vents rely on strong winds to make them effective gable vents are often used in addition to other attic vents including soffit vents.
So if your attic is 25 by 15 you ll need 2 5 feet of vent space.
Of venting technically net free vent area or nfva for each 150 sq.