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2006 Building Code – Flashing Changes & Challenges

2006 Building Code – Flashing Changes & Challenges. Builder Breakfast and Luncheon Series Presented by:. 2006 Building Code – Flashing Changes & Challenges. Speakers Mick Ryan , President, Siding Contractors Association of Alberta (SCAA)

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2006 Building Code – Flashing Changes & Challenges

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  1. 2006 Building Code – Flashing Changes & Challenges Builder Breakfast and Luncheon Series Presented by:

  2. 2006 Building Code – Flashing Changes & Challenges • Speakers • Mick Ryan, President, Siding Contractors Association of Alberta (SCAA) • Michael Andrade, Gienow Windows & Doors/AHITC Subcommittee

  3. Code Areas Affected by Flashing Changes • 9.3.3.2 & 9.27.3 Materials for flashing • 9.26.4.1 Decks as Structures • 9.27.3.8 Flashing Installation • These changes apply to all types of exterior cladding materials (siding, stucco, masonry, etc.)

  4. Allowable Materials for Flashing9.27.3 & 9.3.3.2 • Lead, galvanized steel, copper, zinc, aluminum • No change in thicknesses or materials allowed • The Standards for flashing galvanizing have changed

  5. Flashing at Decks 9.26.4.1 • Decks & balconies that do not permit the free drainage of water through the deck must be treated as a roof. • Unless the surface slopes to the outside of the building so water can freely drain over the edge. • Flashings should installed • between walls and decks • at guards in contact with the decks

  6. Section 9.27.3.8 Flashing Installation • Flashing must be installed at • every horizontal change in cladding element • every horizontal offset in the cladding • every horizontal line where the cladding substrate changes, and • top and bottom of all penetrations

  7. Section 9.27.3.8 Flashing Can Be Omitted Where……. • the upper cladding elements overlap the lower cladding elements by at least 25mm • Where drained & vented air spaces are used • Horizontal joints in stucco with expansion strips

  8. Extend at least 50mm upward (1997) Have a minimum 6% positive slope (2006) Have end-dams not less than 25mm high Lap a minimum of 10mm vertically over the building element below (2006) Terminate with a drip that extends at least 5mm out from the face of the building element (2006) Section 9.27.3.8 Flashing Specifications for Wall Openings

  9. Installation of Perimeter Flashing Siding can be clipped over the Perimeter Flashing or set on top of the flashing in a J Trim

  10. Penetration Options • Flash each penetration individually • Mount all penetrations on battens to allow the flashing to be placed on the battens rather than each penetration individually. • Use self draining/flashed covers that meet code requirements

  11. Flashing Mechanical Penetrations 2006 Code 1997 Code

  12. Penetrations • All penetrations must be flashed, top and bottom

  13. Weather Resistant Barrier to overlap 9” on vertical joints • Weather Resistant Barrier to overlap 4” on horizontal shingle laps • Caulk behind batten & J Trim on verticals • Caulk behind reverse flashing on horizontals.

  14. Flashing at bottom of Batten 25mm

  15. Batten & Flashing Detail Above Window 25mm 25mm Up Dam

  16. Flashing at the Window Sill • The 2006 ABC requires flashing at window sills • 2 acceptable solutions are recognized • Metal sill flashing • A self-flashing sill

  17. Acceptable Solution #1 Metal Sill Flashing Options for Flashing at Window Sills

  18. Flashing at the Window SillAcceptable Solution #2 6% Slope Drip 5 mm beyond cladding Self-flashing sill

  19. Drip Accessory – Potential Acceptable Solution Vinyl Window Metal Clad Window

  20. In Summary • The 2006 flashing requirements • have created additional complexity • Number of locations requiring flashings has increased • Configuration of the flashing • Up dams • “Leg” length may vary depending on application • Will result in additional cost due to • increased install time required • increased amount of flashing materials

  21. In Summary • Talk to your contractors to • Ensure that the flashing materials and configurations used meet code requirements • Galvanization, “leg” length, 6% slope • Ensure deck interfaces are flashed • Review designs and add flashing transitions • Discuss with your contractors

  22. Additional Resources and Information • Questions on acceptable solutions • Local Code Authority • Municipal Affairs help line (866-421-6929) • Flashing Details • Siding Contractors Association of Alberta (403-291-9707) • Stucco Toolkit – CHBA AB or ANHWP (www.chbaalberta.com) • AWCA Stucco Resource Guide (403-250-7045) • CMHC Flashing Guide (www.cmhc-schl.gc.ca)

  23. 2006 Building Code – Flashing Changes & Challenges • Questions? • Thank you!

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