Attic Sheathing Insulation

Baffles establish a channel for air to circulate between the insulation and the roof sheathing.

Attic sheathing insulation.

The problem arises with moisture. This roof assembly has no insulating sheathing installed above the roof deck. As with attic floor insulation moisture and heat removal are the reasons for creating proper air. Rigid foam insulation also known as insulating boards provide high r values.

For diy attic insulation you ve got two choices. You can even place it under the foundation slab. This retrofit assembly is appropriate for homes with conditioned attics or where the retrofit is intended to create a conditioned attic. Mildew can be very dangerous to your health.

Figure 5 shows the potential for condensation of an unvented roof assembly in dallas tx. The moisture is held in place by the insulation which allows for damage to the framing and other building components. T he problem with the insulation against the sheathing expands. Once you ve decided which type is best for you examine the material options and prices to home in on the right product.

Install insulating sheathing above the roof deck on existing homes. Remove existing roofing and non adhered underlayment to expose roof sheathing. Mold growing on the sheathing in your attic is a serious problem that shouldn t be ignored. Rigid insulation is one of the best tools to reduce your energy costs.

Featuring integrated moisture air and thermal protection zip system r sheathing completely reimagines traditional wall assemblies by streamlining exterior water air and thermal management. In warm climates zones 1 through 4 low density open cell spray foam insulation is the typical choice since it is vapor permeable and will allow drying of the exterior sheathing and roof framing if they happen to get wet via diffusion into the interior of the building. In the winter humidity from the house s interior will get past the insulation and come in contact with the cold roof sheathing where it will condense into water. They keep your home at a comfortable temperature without the need to crank your heat.

Note that this roof assembly has rigid insulation installed above the roof deck in order to control the condensation potential. Loose fill or batt the common term for blanket insulation. Install it anywhere from the roof to the foundation. If there is a roof leak the insulation will be damaged by the water leaving you with less insulating value.

Both can be added to uninsulated attics or layered over existing material. Without a proper air space to allow the insulation and roof to dry out this water will collect potentially leading to rot and mildew.