Transcript Residential Weatherization and Ventilation Subcommittee Presentation to the Regional Technical Forum June 28, 2011

Residential Weatherization and
Ventilation Subcommittee
Presentation to the Regional
Technical Forum
June 28, 2011
History
2006 Last version of RTF Residential Specifications
Subcommittee evolved to RTF contracted management of group in Nov 2010.
55 Subcommittee members participated
Bi weekly teleconferences, weekly during hot topic season (ventilation) from Dec-May.
Delivered Updates to RTF, presented Jan, May and June
Ventilation Specifications Approved June 2011
These are the remainder of the retrofit specifications, approved line-by-line by
subcommittee
3-year revision cycle begins immediately after adoption.
Subcommittee: Residential Weatherization and Ventilation Specifications
2
General Revisions to 2006 Specifications
• Formatting
• Code references
• Avoided redundancy
• Improved detail of installation requirements
Subcommittee: Residential Weatherization and Ventilation Specifications
3
How Specification May
Change Measures
• Change in measure cost/savings:
– Inspection requirements may increase admin. cost
– Changes in compliance may change cost and
savings
• Other or follow-on work for RTF:
– Review measure savings and cost and update UES
General Specifications
• Inspector qualifications and inspection
requirements (I-3)
• Whole home mechanical ventilation compliance (I6)
• Indoor air quality materials
– Disclosure Form
– EPA Booklet
• Installer Certificate/Record (II-11)
Subcommittee: Residential Weatherization
and Ventilation Specifications
5
General Specifications
“An inspector or representative of the utility
(who has demonstrated competency of
understanding these specifications through
successful passing of an RTF approved written
test) shall inspect a minimum 25% of projects
to verify and document projects comply with
these specifications.”
General Weatherization
• Human Contact Areas (III-1)
• Electrical Wiring (III-2)
– Knob and Tube
– Junction Boxes
• Combustion Appliance Exhaust Ventilation
Inspection (III-3)
• Carbon Monoxide Detectors (III-4)
Subcommittee: Residential Weatherization
and Ventilation Specifications
7
Compliance Conditions
Weatherization
Measure
Compliance w/
Whole House
Mechanical
Ventilation
Prescriptive
air sealing
required
Prescriptive Duct
Sealing and
Insulation
Attic
No
Yes
Yes
Floors
No
Yes
Yes
Walls
No
Yes
No
Windows
No
Yes
n/a
Ducts Ins.
No
n/a
Yes
Whole House Air
Sealing
Yes
Yes
No
• Where combustion appliances are present in conditioned space a CO monitor
and combustion venting inspection is required.
Attic and Roof Insulation
• Added more detail to prescriptive air sealing
and duct insulation requirements (AR-1,AS, D)
• Prescriptive duct sealing required (AR-1, D)
• New references to Air Sealing and Mechanical
Ventilation sections
• Safety requirements for insulation near heat
producing fixtures (AS-7)
• Attic access varieties (AS-10)
• Attic wall insulation (AS-13)
• Unvented vaulted ceilings (A-19)
Subcommittee: Residential Weatherization
and Ventilation Specifications
9
Underfloor Insulation
• Added more detail to prescriptive air sealing
and duct insulation requirements (FI-2)
• Prescriptive duct sealing required (FI-2)
• New references to Air Sealing and Mechanical
Ventilation sections
• Underfloor access varieties (FI-5)
• Insulation support (FI-10)
• Exterior Perimeter Insulation section removed
• Blown Floor Insulation – Manufactured (FI.2-3)
Subcommittee: Residential Weatherization
and Ventilation Specifications
10
Wall Insulation
• Plugs to be sealed & ready to paint (WI-i)
Subcommittee: Residential Weatherization
and Ventilation Specifications
11
HVAC Duct Sealing and Insulation
• Replace uninsulated flex-ducts with R-8 flex
(D-a)
Subcommittee: Residential Weatherization
and Ventilation Specifications
12
Hydronic and Water Pipe Insulation
• Insulation must be designed &
manufactured for purposes of insulating
pipes (HW-a)
• Properly sized if pre-formed insulation is
used (HW-d)
Subcommittee: Residential Weatherization
and Ventilation Specifications
13
Windows/Doors
• Caulking, finish, air sealing, flashing
requirements added (WD-2)
• Re-worded safety glazing requirements
(WD-9,10)
Subcommittee: Residential Weatherization
and Ventilation Specifications
14
Air Sealing & Testing
• New section – Prescriptive and Whole House
• Incorporates previously separate Air Sealing requirements
– Field Verification Protocol for Determining Reduction in
Infiltration Levels and Mechanical Ventilation Requirements for
Site Built and Mobile Homes with Verified Air Sealing
•
•
•
•
•
•
Air Sealing Checklist
Define accessible/non-accessible locations
Air Sealing Checklist with required sealing locations
Contractor certifications for Whole House air sealing
Testing protocol
CAZ test procedure
Subcommittee: Residential Weatherization
and Ventilation Specifications
15
Mechanical Ventilation
• New Section
• Spot & Whole Home mechanical ventilation
requirements
• Ventilation duct installation requirements
Subcommittee: Residential Weatherization
and Ventilation Specifications
16
Committee Recommendations
• Evaluation of true market changes
– Savings
– Cost
– Ventilation/Air Sealing impact on prescriptive
measures
– Compliance
• Support a three year revision cycle
• Region understands the rigor required for
inspection requirements that are difficult but
important to assure persistence
• Adopt the specifications
RTF Proposed Motion:
“I ____________move that the RTF adopt the
Residential Weatherization Specifications
developed by the Residential Weatherization
Specification Subcommittee.”