Roof Without Ridge Vent

Openings along the sides allow air out of the attic cooling the space and lowering your air conditioning bill.

Roof without ridge vent.

Older houses may not have vents between the rafters leading into the attic space. 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. There is a maximum slope of 16 12 for a roof ridge vent. Venting prolongs the life of the roof.

Have a great day. So if your attic temperatures are high you ll feel the effect in your living spaces below. But few houses have continuous soffit and ridge vents. The minimal roof gradient for a ridge vent is a ratio of 3 12.

In cold climates snow can enter the soffit and ridge vents melt and potentially cause rot. Houses with no rafter overhang or a very short one may not have soffits. Another option for homes that have no place for intake vents would be to use a modified solar fan. 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.

Most houses however do have some type of vent in the roof or an opening at gable ends. I hope i answered your question adequately. Without venting when the sun continuously beats down on your roof your attic temperature will climb. 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.

Jan 6 2019 by brandon miller. But when it gets buried kankan adds bam dams. Kankan writes that his well insulated roof has no problem with ice dams as long as the ridge vent is visible. I have seen with my eyes my ridge vent get completely buried in snow and saw results of lack of ventilation instantly kankan says.

What most people don t realize is that heat not only rises but it also radiates. Beyond the decreased capacity for insulation when venting the roof deck venting the roof deck or the attic has some other drawbacks worth considering. 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.