Green Building How To Build A Conditioned Attic

You can reduce dust buildup using an unvented attic versus a vented attic.

Green building how to build a conditioned attic.

Check out our latest creation. The loss of energy efficiency means some designers choose to move the ductwork into the conditioned areas of the home and leave the attics unvented. The irc has permitted unvented conditioned attics since 2006 with certain requirements. Compact assembly or hot roof ventilated roof assembly you can insulate the rafter space provided that you leave a ventilation space between the top of the insulation typically fiberglass batts or blown cellulose and the underside of the roof sheathing section r806 1 ventilation required.

The roof deck in an unvented attic must be exceptionally airtight. Department of energy through the building america program to research conditioned attics in nevada and texas. Unvented attics are built with insulation of the attic is placed at the roof level and the area inside the attic is a conditioned space. That decision he writes has added a whole new level of complexity to his building process.

An unvented attic assembly a k a. The acceptance of unvented conditioned attics continues to grow among builders and building officials. This has several advantages including less air transfer and what air does transfer is conditioned. After experimenting with cellulose insulated roof assemblies and fiberglass insulated roof assemblies lstiburek began promoting conditioned attics.

One of them is what to do about the attic. Code requirements vary across the country. Fincher is weighing the relative merits of making the attic a conditioned space where he could safely house heating and air conditioning equipment or keeping it an unconditioned space. My name is matt risinger of risinger homes and welcome to my video blog on green building and building science topics.

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