Hot Roof Design Evaluation

The roof structure above the ceiling is not insulated at all.

Hot roof design evaluation.

Here we used the regular style sheathing rather than insulated r sheathing once the panel seams are taped the roof is dry. This definition allows simple unvented roof design just don t install vents in a previously recognizable climate zone ashrae s hot humid zone. However this also allows cold air to enter. The bigger the r value the better it will insulate your home.

As a result this type of roof is known as a cold roof. Perks of a hot roof. The term hot roof is something of a misnomer as the attic space will only be a few degrees warmer than in a traditional roof. Likewise referred to as kicked eaves a hood roof has 4 sides with a high top incline as well as a much more mild reduced incline offering cover around the sides of your home for a veranda.

The unit of measurement for insulation is called the r value. Bonnet roofing systems are basically a mansard roof backwards. This article describes various solutions for un vented cathedral ceilings and similar under roof spaces offering advice on how to avoid condensation leaks attic mold structural damage when roof venting is not possible. This allows air to circulate.

This article series about roof and ceiling ventilation describes. A good roof pitch would be atleast 30 degrees although traditional vernacular samples may go as high as 45 degrees which i think is better. A powerful argument can be made for unvented roof construction in hot humid climates in order to control interior moisture. Practicality is also enhanced.

A system most likely to be found in newly built homes. This is a major structural issue in roof construction. To do this we designed an unvented hot roof the framing crew erected a structural ridge hand cut 2 8 rafters and sheathed the roof with 5 8 in. Hot roof designs for un vented roofs aka dense packed insulated sloped roofs.

A cold roof design usually leaves a 50mm gap between the top of the insulation and the roof deck above. Flat roofing systems are more appropriate for places that have hot and dry weather. The roof needs to withstand weather elements such as rainfall snow strong winds and sunshine. These roofs have some pros and cons as explained in the article.

The r value measures how well insulation is able to resist heat going through it. If you live in a rainy region for instance consider having a sloped system which will reduce pooling. Un vented roof solutions hot roof design problem solutions. There are examples of bahay kubo with the house to roof ratio of one is to three meaning the height of the walls of the house is one third the height of the roof which makes for very cool interiors since the inhabitants are very far from the.