Flat Roof Ventilation Design

Some of these vents are very basic in nature but there are also those with some decorative flair to them.

Flat roof ventilation design. Ventilation for cold roofs. Flat roof ventilation allows for the circulation of air in the property particularly for warmer rooms in residential buildings. Its more a question of whether to specify a warm or inverted roof. The answer depends on the type of roof you have.

A cold roof or hot roof. Any type of roof from tpo to epdm can be either hot or cold. An inverted roof places the waterproof layer directly over the roof. In a concrete deck for example this gap could be created by fixing 50x50mm timber battens at 600mm centres and attaching the insulation to underside of these battens.

Uk due to the need for increased depths of insulation required to meet current u values and the requirement for cross ventilation. Roof ventilation choices design specifications. Ventilation through the roof is important for both cooling off the attic area and for an efficiently working waste drainage system. There are two types of flat roof systems warm and cold roofs which affect the positioning of the ventilation.

When thermal insulation is placed below the deck the ventilation must also be on the underside. When it comes to flat roof vents there are several different options to choose from. And finally i agree that if you are using louvered rather than simple flat perforated vent openings at a soffit the louvers will pick up more air if their openings face outwards away from the house walls presuming there is a breeze blowing in that direction. It depends on where the insulation is installed.

Hot roofs have the roof deck then insulation then the roofing material.