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

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Presentation on theme: "1 2006 Building Code – Flashing Changes & Challenges Builder Breakfast and Luncheon Series Presented by:"— Presentation transcript:

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

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

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

4 4 Allowable Materials for Flashing & Lead, galvanized steel, copper, zinc, aluminum  No change in thicknesses or materials allowed The Standards for flashing galvanizing have changed

5 5 Flashing at Decks 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 6 Section 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 7 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 Section Flashing Can Be Omitted Where…….

8 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 Flashing Specifications for Wall Openings

9 9

10 10 Installation of Perimeter Flashing Siding can be clipped over the Perimeter Flashing or set on top of the flashing in a J Trim

11 11 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

12 12 Flashing Mechanical Penetrations 1997 Code 2006 Code

13 13 Penetrations All penetrations must be flashed, top and bottom

14 14

15 15

16 16 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.

17 17

18 18 Flashing at bottom of Batten 25mm

19 19 Batten & Flashing Detail Above Window 25mm 25mm Up Dam

20 20

21 21 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

22 22 Options for Flashing at Window Sills Acceptable Solution #1 Metal Sill Flashing

23 23 Flashing at the Window Sill Acceptable Solution #2 6% Slope Drip 5 mm beyond cladding Self-flashing sill

24 24 Drip Accessory – Potential Acceptable Solution Vinyl Window Metal Clad Window

25 25 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

26 26 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

27 27 Additional Resources and Information Questions on acceptable solutions  Local Code Authority  Municipal Affairs help line ( ) Flashing Details  Siding Contractors Association of Alberta ( )  Stucco Toolkit – CHBA AB or ANHWP (www.chbaalberta.com)  AWCA Stucco Resource Guide ( )  CMHC Flashing Guide (www.cmhc-schl.gc.ca)

28 28 Questions? Thank you! 2006 Building Code – Flashing Changes & Challenges


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