4.1006.2 Access Doors and Hatches

Topic: 
Attics
Subtopic: 
Attic Openings
Desired Outcome: 
Attic access door properly sealed and insulated
For supporting material, see Calculation of the Infiltration Credit, Referenced Standards and Building America Solution Center.
TitleSpecification(s)Objective(s)
4.1006.2a
Installation

Hatches will be insulated to the maximum R-value structurally allowable up to the R-value of the adjoining insulated assembly

Attic hatches rough opening will be surrounded with a durable, rigid protective baffle that is higher than the level of the surrounding attic floor insulation

Achieve uniform R-value on the attic door or hatch

Achieve uniform R-value on the attic floor

Prevent loose attic floor insulation from entering the living area
4.1006.2b
Sealing

 Access hatch frames will be sealed using caulk, gasket, weather-strip, or otherwise sealed with an air barrier Air barrier The separation between the interior and exterior environments of a building that slows air flow to the point that no smoke movement is visible at 50 pascals of pressure difference across the boundary material, suitable film, or solid material 

Options will include installing a latch or lock or frictionally engaged components that do not require a latch 

The measure must include a protective baffle or insulation barrier 
 

Prevent air leakage
4.1006.2c
Attachment

Insulation will be permanently attached and in complete contact with the air barrier Air barrier The separation between the interior and exterior environments of a building that slows air flow to the point that no smoke movement is visible at 50 pascals of pressure difference across the boundary

Insulate to prescribed R-value
4.1006.2e
Onsite documentation

A dated receipt signed by the installer will be provided that includes:

  • Coverage area

  • Thickness

  • R-value
    		•

    Document job completion to contract specifications

    Confirm amount of insulation installed

    Comply with 16 CFR 460.17