Cold Deck Flat Roof Ventilation

Introduction warm cold roofs this guidance offers guidance on the difference benefits between warm and cold roofs.

Cold deck flat roof ventilation.

The answer depends on the type of roof you have. Ventilation is required to the underside of the deck. Cold roofs and warm roofs. It depends on where the insulation is installed.

Hot roofs have the roof deck then insulation then the roofing material. What is flat roof ventilation. How much ventilation does a flat roof need. Any type of roof from tpo to epdm can be either hot or cold.

A cold deck roof is where the insulation is placed between the joists rafters or in between the ceiling joists in the case of a pitch roof. In this case ventilation is required and the roof can still become wet with condensation which may cause materials to decay. A cold roof or hot roof. Guidance advice on warm cold.

When thermal insulation is placed below the deck the ventilation must. There are two types of flat roof. There are two types of flat roof systems warm and cold roofs which affect the positioning of the ventilation. Cold roofs have the waterproof layer placed directly onto the roof deck and the insulation inside the roof just above the ceiling.

Flat roof ventilation allows for the circulation of air in the property particularly for warmer rooms in residential buildings. Ventilation is required for these roofs.