Attic Foil With Ductwork In Attic

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.

Attic foil with ductwork in attic.

When done this way fresh outside air will enter the attic low at the soffit level and it will go one of two routes. Attic ventilation is real simple. Recently i had another hvac company come out and put in a new bathroom vent and they told me they believed the duct work was full of water. Regardless of the type of ventilation systems you have this is the best way to do it.

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. 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. Install ductwork so that it is in direct contact with i e laying on the ceiling and or truss lower cords. It was new when the ac was put in 7 years ago.

Today s flexible ductwork is covered with a shiny metallic cover this is its vapor barrier. I called out the original hvac company and they took a look and said they saw no water. Ductwork running through the attic space is another example of when a staple up method should be used. So no you cannot just lay foil over the duct work and get the same effect.

In cold months foil on the floor of an attic helps to stop radiant heat loss from the living spaces below. Heat is flowing into the ducts by conduction not radiation. The shiny vapor barrier will protect the ductwork from sweating as long as it s exposed to the surrounding air. Good ventilation will put the ducts in a cooler environment.

You must have both. Holes in the top of your attic i e. Hvac ductwork is typically visible in your attic especially flexible ductwork. Holes in the top of the roof exhaust vents and holes in the bottom soffits or eves.

Empty attic spaces in mixed climate zones can benefit year round from the over insulation method. Air cannot move out unless it can move in from the bottom. Attic ventilation is very simple. For homes like this using radiant barrier foil on top of the insulation gives you the best year round benefit by both.