3.1602.6 Capping Dual-Cooling Up-Ducts

Topic:

Ducts

Subtopic:

Duct Sealing

Desired Outcome:

Dual-cooling up-duct Dual-Cooling Up-Duct Piece of duct located between the living space and attic to allow air flow in pressurized homes having evaporative coolers is sealed to prevent leakage

For supporting material, see Referenced Standards and Calculation of the Infiltration Credit.

Single-Family Homes

	Title	Specification(s)	Objective(s)
	3.1602.6a Backing and infill	Backing or infill will be provided as needed to meet the specific characteristics of the selected material and the characteristics of the up-duct opening A material will be rated for use in duct systems The infill will not bend, sag, or move once installed	Minimize hole size to ensure successful use of sealant Ensure closure is permanent and supports any pressure produced by wind or air handler fan Ensure sealant does not fall out
	3.1602.6b Sealant selection	Sealants will be continuous and be in accordance with 2012 IRC IRC International Residential Code R302.9	Select permanent sealant Ensure sealant meets or exceeds the performance characteristics of the surrounding materials

Title

Specification(s)

Objective(s)

3.1602.6a
Backing and infill

Backing or infill will be provided as needed to meet the specific characteristics of the selected material and the characteristics of the up-duct opening

A material will be rated for use in duct systems

The infill will not bend, sag, or move once installed

Minimize hole size to ensure successful use of sealant

Ensure closure is permanent and supports any pressure produced by wind or air handler fan

Ensure sealant does not fall out

3.1602.6b
Sealant selection

Sealants will be continuous and be in accordance with 2012 IRC IRC International Residential Code R302.9

Select permanent sealant

Ensure sealant meets or exceeds the performance characteristics of the surrounding materials