That moisture generates cracks and splits as it continues to dry out. Kiln dry wood contains a small amount of moisture and it is used in all furniture. Through extensive research, we learned that manufacturers claim that wood can deteriorate faster if it is allowed to “breathe”.
According to designers and builders, the reason for this happening is because wood needs to breathe.Īs it turns out, the “breathing wood” issue is not much of an issue since most furniture manufacturers actually kiln dry wood before it is used. It is argued that this system can cause the shingles on your roof to overheat and curl off. The attic then becomes as comfortable as any other room in the house, since it is now a “conditioned” space. This provides the attic with the type of insulation that blocks out severe temperatures. To achieve insulation of the attic space from the extreme heat that radiates through the roof, the sheathing, and the singles, spray foam needs to be applied directly to the underside of the roof deck. There is also opportunity for moisture to form due to condensation on these appliances. There’s no reason for your air-conditioning and vent-ductwork to have to work in that type of severe conditions. However, inside a vented attic, it will get up to approximately 130-degrees in the summer. The traditional practice of insulating the underside of the roof in the attic has raised much debate in the building industry because “standard” roofing and design techniques call for the attic to be ventilated in order to reduce moisture problems and heat build-up in the hot summer months. The air barrier is created by applying foam directly in between the joists, on the gable wall ends, and down around the rim and into the soffits of the underside of the roof. This is considered the most effective application by members of the spray foam industry because it effectively seals off and insulates the entire attic space from any air infiltration. Although it is not the most effective system, it is the most common engineered system used throughout the U.S. The attic, via soffit, ridge, and gable vents, remains highly vented. However, no insulation is applied to the rest of the attic. Between the floor joists, where cellulose and fiberglass insulation is traditionally used, spray foam is also applied. Insulation is used on the attic floor to insulate the ceiling from the seasonal cold and/or heat in a traditional vented attic setting. Attic Floor Spray Foam Insulation Application (Through a Vented Attic)īuilding science and design principles that your builder/architect subscribes to can often dictate the method of spray foam used in the attic.There are two common ways to insulate your attic space and protect your home from other weather and moisture related damages using spray polyurethane foam.
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