How To Insulate Around Air Ducts In Floor Joists

Use caulk or foam sealant to seal the joint between the top.

How to insulate around air ducts in floor joists. Enjoy better floor to floor climate control in your home by installing ceiling insulation. Place rigid roam against the rim joists then caulk along the insulation. Whenever possible run the insulation between the obstructions and the subfloor. If the air distribution is in the attic space then consider insulating the rafters to move the distribution into the conditioned space.

Cut slits in the insulation so you can run it on either. Adding insulation to your water heater can reduce standby heat losses by 25 to 45 percent which in turn reduces your energy bills. Use foam sealant such as great stuff to seal the joints. Install the insulation with the vapor barrier facing up toward the heated living area of the house.

To install sleeves you must either disassemble the ductwork and slide it on before reassembling the ducts or as many homeowners find themselves doing slit it and wrap it around like the blanket style material. Fiberglass insulation works as an insulator because it traps air in the fibers of the insulation and slows the collision of warm and cold air. Fill the ends of joist bays with rectangles cut from rigid board insulation. How to finish a basement wall.

Airtight insulation reduces heat loss through the rim joist band joist. Wrapping hot water pipes in tubular insulation will also help reduce loss in water heat. If the fiberglass insulation gets wet or very damp it will begin to collapse get heavy and fall from the floor joists rendering it useless to trap air and be an insulator. To insulate the exterior you have a choice between sleeve style insulation and blanket wraps which literally wrap around the ductwork.

1a attic access door. If there s room for a 3 5 batt with a paper facer to snug up to the duct fiber side to the duct paper downward toward the ceiling gypsum that s good enough foil tape works well if the ducts are shiny and clean but for older dirtier ducts duct mastic is more reliable. If the crawl space is ventilated which is ideal because it aids in the elimination of moisture then fiberglass insulation can be easily installed under the subfloor between the floor joists. In unfinished attic spaces insulate between and over the floor joists to seal off living spaces below.

Work the insulation around pipes wires and heating ducts. Water heater and water pipes.