Unusually tight construction means windows and doors are either tight fitting or are sealed construction and that walls are covered with a continuous, sealed vapor barrier and drywall or similar materials having sealed joints.
What is considered a tight house?
This measurement is often written in shorthand as CFM50. For an average home, between 500 and 1,500 CFM50 is considered “tight.” A home with CFM50 greater than 1,500 may benefit from air sealing.
Can a house be built to tight?
So, to answer our original question: Can a house be sealed too tightly? The answer is: No! With proper house ventilation systems, a tightly-sealed Eastern Shore house offers superior control of your home performance, from increased energy efficiency that will keep your energy bills down to higher indoor air quality.
What is a tightly built home?
A “tight” home relates to the overall size of all of the holes and penetrations in the exterior of the building envelope. Natural ventilation are the forces that drive air in or out through the leaks in the building envelope.
What is called tight?
(held or kept together) firmly or closely: I can't untie the knot - it's too tight. This lid is on very tight. The people stood talking in tight groups. Hold on tight when we go around the corner.
What is a builders gap?
What is Builder's Gap? This is a gap between the fascia board (where the gutter is hung) and roof decking. This gap is caused when roof decking is stopped too short and is not flush with the fascia. The gap is meant to help with airflow throughout the attic.