Roof Without Ridge Vent

Roofers use a circular saw to cut a long slot along the roof ridge if there isn t one then cover it with a plastic flap as shown or a flexible vinyl matrix.

Roof without ridge vent.

If you go this route you will need additional vents to allow the air to get out i recommend you use static vents for this purpose. In cold climates snow can enter the soffit and ridge vents melt and potentially cause rot. I hope i answered your question adequately. But few houses have continuous soffit and ridge vents.

But when it gets buried kankan adds bam dams. Older houses may not have vents between the rafters leading into the attic space. Have a great day. If you own an older home then there is a good chance that there isn t any roof ventilation.

Another option for homes that have no place for intake vents would be to use a modified solar fan. The reason this does not create an issue is that these houses aren t as air tight as the modern structures are which means they have adequate air movement despite the lack of any vents. Kind regards jonathan coxen. Kankan writes that his well insulated roof has no problem with ice dams as long as the ridge vent is visible.

Openings along the sides allow air out of the attic cooling the space and lowering your air conditioning bill. Without venting when the sun continuously beats down on your roof your attic temperature will climb. You will reverse the wires to make the fan blow into the attic as your intake. Construct a hidden roof intake vent at the top of the building wall by removing the wall top trim or top siding board cutting away any building sheathing or blocking at the wall top nailing 1 spacer blocks 16 on center nailing a new spaced out wall top trim board along the roof eaves and screening the opening against insects.

There is a maximum slope of 16 12 for a roof ridge vent. The minimal roof gradient for a ridge vent is a ratio of 3 12. Most houses however do have some type of vent in the roof or an opening at gable ends. So if your attic temperatures are high you ll feel the effect in your living spaces below.

Beyond the decreased capacity for insulation when venting the roof deck venting the roof deck or the attic has some other drawbacks worth considering. Houses with no rafter overhang or a very short one may not have soffits. Venting prolongs the life of the roof.