Hot Roof Design Evaluation

A hot roof contains the highest r value because there are no chances for air to leak.

Hot roof design evaluation. Perks of a hot roof. Un vented roof solutions hot roof design problem solutions. A system most likely to be found in newly built homes. A cold roof design usually leaves a 50mm gap between the top of the insulation and the roof deck above.

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 definition allows simple unvented roof design just don t install vents in a previously recognizable climate zone ashrae s hot humid zone. Hot roof designs for un vented roofs aka dense packed insulated sloped roofs. The roof structure above the ceiling is not insulated at all.

This article series about roof and ceiling ventilation describes. These roofs have some pros and cons as explained in the article. Flat roofing systems are more appropriate for places that have hot and dry weather. The r value measures how well insulation is able to resist heat going through it.

However this also allows cold air to enter. As a result this type of roof is known as a cold roof. Here we used the regular style sheathing rather than insulated r sheathing once the panel seams are taped the roof is dry. 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.

A powerful argument can be made for unvented roof construction in hot humid climates in order to control interior moisture. This article describes various cold climate building 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. Bonnet roofing systems are basically a mansard roof backwards. Hot roof design hood 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. Practicality is also enhanced. 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. 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 bigger the r value the better it will insulate your home. If you live in a rainy region for instance consider having a sloped system which will reduce pooling. The roof needs to withstand weather elements such as rainfall snow strong winds and sunshine. This is a major structural issue in roof construction.