Attic Foil With Ductwork In Attic

Empty attic spaces in mixed climate zones can benefit year round from the over insulation method.

Attic foil with ductwork in attic. In cold months foil on the floor of an attic helps to stop radiant heat loss from the living spaces below. See more diy project photos. You must have both. Regardless of the type of ventilation systems you have this is the best way to do it.

Attic ventilation is real simple. For homes like this using radiant barrier foil on top of the insulation gives you the best year round benefit by both. Holes in the top of your attic i e. Ductwork running through the attic space is another example of when a staple up method should be used.

Holes in the top of the roof exhaust vents and holes in the bottom soffits or eves. Hvac ductwork is typically visible in your attic especially flexible ductwork. Today s flexible ductwork is covered with a shiny metallic cover this is its vapor barrier. So no you cannot just lay foil over the duct work and get the same effect.

Good ventilation will put the ducts in a cooler environment. When hvac ducts are installed in a vented attic in a dry climate bury the ducts in attic insulation to protect them from temperature extremes in the unconditioned attic space. The shiny vapor barrier will protect the ductwork from sweating as long as it s exposed to the surrounding air. Wind turbines static vents or attic fans which consequently we do not recommend and holes in the bottom of your attic usually in the form of soffit vents that are clear and open.

Install ductwork so that it is in direct contact with i e laying on the ceiling and or truss lower cords. Attic ventilation is very simple. I called out the original hvac company and they took a look and said they saw no water. The attic ductwork is flex duct work.

If you have no ductwork in your attic and your attic floor is free and clear of hvac components and miscellaneous storage boxes then you can use the superperf or the original atticfoil for an over insulation method. Air cannot move out unless it can move in from the bottom. Either up the channel created by the foil between the roof deck and the foil or it will come into the attic below the foil. Heat is flowing into the ducts by conduction not radiation.