Case Study at Rickert’s House

Ms. Rickert’s house has a semi-flat roof. The third floor of the house was an expansion into the attic space. The ceiling on the third floor was vaulted with very limited clearance between the drywall and the roof deck which implies that there is no manual air sealing that can be done. The vaulted ceiling had no insulation which impacted the level of comfortability in the living space, as well as Ms. Rickert’s energy bill. So, our team had to cut access strips in the vaulted ceiling and used five inches of semi-rigid cavity rock insulation. They placed the semi-rigid cavity rock right up against the drywall, leaving about an inch to two inches of clearance from the roof deck. In addition, our team installed an attic fan towards the peak of the roof, which was built on an eight-inch curb. The fans purposes is too cool the attic area and remove any stagnant air, especially during the summertime.

This picture shows the cavity rock next to the slop of the vaulted ceiling .
This picture shows the cavity rock placed into the vaulted ceiling.
this picture is the attic fan that was installed.
Attic fan looking in from the attic.

Our team also installed vents at the front, back and lower part of the attic to feed air to the attic fan so that the third-floor space would not get completely hot and saturated with heat. There was also a significant amount of cavity space in the lower attic that was also filled with fiberglass insulation so having a sufficient venting system in the attic will help persevere the effectiveness of the fiberglass insulation.

This picture shows two vents that
were installed.
This picture shows the open blow fiberglass in Ms. Rickert’s attic.

Keep in mind, the cavity rock, it is an alternative method to spray foam. However, it is more affordable and less invasive as far as the persistent chemicals associated with spray foam installation.

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