By preventing a roof space from getting too hot or too cold you reduce the build up of moisture levels.
How to fit roof vents in tiles.
As an alternative to roof tile vents a pre vented ridge tile can be fitted which works equally well.
Use enough vent pieces to fill the length of the slot you cut.
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The vent pipe is then pushed through the hole and secured via the fixing holes.
The penetration will be oval to have a round pipe exit vertically through a pitched roof you need an oval hole in the roof.
Once the tiles have been cut install the outside piece of the vent.
Trim the tiles so that the vent fits neatly into the hole.
Installing roof vents moderates the temperature in an attic or roof space.
Hold the vent piece in place until you can nail it down.
In my opinion one of the best places to fit roof tile vents is normally the bottom third of a roof just above insulation level.
With the pipe in a vertical position trace around the pipe using a pencil.
When this is securely in place return to the attic and screw in the plate that holds the vent to the roof.
This allows air to circulate over the insulation taking away any moisture evaporating upwards or trapped in the insulation fibres.
Allowing the air in a property to circulate keeps the air fresh and reduces risk of condensation.
The vent is in most cases cemented to the existing roof just as a standard non.
Step 3 add the vent.
If you need to cut the vent to fit at the end of your roof use a utility knife to make it flush with your home.
Turn your vent upside down and apply a thick bead of caulk to the flange.
Roof tiles are then re laid and cut around the vent pipe easy.
Go into your attic.
Center the vents on the peak of your roof so the sides of the vent lay flat on the roof.
If you have any electrical work you can also install this now.
Position the first roll of underlayment at one side of the roof perpendicular to the lower edge the eave of the roof.
Position the vent pipe up to the bottom of the roof.
Next hammer in a nail every few inches to secure the vent to your roofing structure.