G L A Z I N G

GENERAL NOTES

Glass Surface Conditions

A. Examine the areas and conditions under which work will be performed. Correct any conditions detrimental. Do not proceed until unsatisfactory conditions are corrected.

B. After preparation of the glazing system, clean glazing channels, stops and rabbets to receive the glazing materials, making free from obstructions and deleterious substances which might impair the work.

1. Remove protective coatings which might fall in adhesion or interfere with bond of sealants.

2. Comply with Manufacturer’s instructions for final wiping of surfaces immediately prior to application of primer and glazing compounds or tapes.

IMPORTANT!!! USE ONLY NEUTRAL CURE SILICONES. DO NOT USE ACETIC SILICONES!!!

The following sealant is recommended by Smart Glass Group Engineers

DOWSIL 737 Neutral Cure Sealant Clear/Black/White

I N S T A L L A T I O N

A. Inspect each piece of glass immediately prior to start of installation.

1. Do not install items that are improperly sized, have damaged edges, or are scratched, abraded, or deficient in any other manner.

2. Do not remove labels were provided by the glass supplier from glass until so directed by the Architect.

3. Adhere to all installation instructions and installation drawings.

4. Locate setting blocks of standard width and thickness at quarter points of all glass panes unless otherwise recommended by the Manufacturer or Supplier.

5. Use blocks of proper durometer size and thickness to support the glass in accordance with the manufacturer’s recommendations.

6. Glass lap and edge clearances must be provided accordingly to pertinent codes and standards of the Manufacturer.

 

B. Set the glass in a manner that produces the greatest possible degree of uniformity of appearance.

  • Indicate clearly when glass is installed in dynamic frames such as operable windows or sliding doors.
  • Pressure glazing systems without positive positioning stops are not to be used with this glass.
  • Glazier to place electrical connections properly to allow access by an electrician.
  • In wet environment applications, electrical connections must exit at the head condition of any framing system.

C. Cut and seal the joints of glazing gaskets in accordance with the Manufacturer’s recommendations, provide a watertight and airtight seal at corners and other locations where joints are required.

P R O T E C T I O N

Protect glass from breakage after installation by promptly installing streamers of ribbons, suitably attached to the framing and held free from the glass.

Do not apply warning markings, streamers, ribbons or other items directly to the glass except as specifically directed by the Architect.

NOTE: Windblown objects, welding sparks, or other material applied to the glass surface during construction may cause irreversible damage.

C L E A N I N G

Cleaning of the glass during the subsequent weathering period is necessary. Abrasive cleaners should never be used, particularly when the surface to be cleaned has a reflective coating.

For routine cleaning, use a conventional window washing solution or mild soap and water.

Uniformly spray the cleaning solution or apply it with a clean, soft, grit free applicator and rinse thoroughly.

The glass surface should then be either wiped dry with a clean, grit free cloth or squeegeed dry.

Do not allow any metal or hard parts of the cleaning equipment to contact the glass surfaces.

Butt-Joint Glazing

IMPORTANT!!! USE ONLY NEUTRAL CURE SILICONES. DO NOT USE ACETIC SILICONES!!!

The following sealant is recommended by Smart Glass Group Engineers

DOWSIL 737 Neutral Cure Sealant Clear/Black/White

FRAME DESIGN

  • Standard frame edge clearance and face clearances may be used, EXCEPT edge bite must be 11mm minimum and framing must have a hole of at least 6mm diameter for wiring. To maintain a proper seal against the infiltration of water and air, adequate bite is required. 
  • Inadequate clearance for the edges can cause damage due to glass-to-metal contact.
  • The industry standard for framing deflection must be adhered to. The deflection must not exceed either the length of the span divided by 175mm, or 18mm, whichever is less.
  • All expansion joints and anchors must be designed so that the glass framing does not incur a load due to structural movement.

SETTING BLOCKS

  • Glass larger than 0.5 square metres should be placed on two EPDM or neoprene setting blocks.

  • These blocks should have a durometer hardness of 85±5.

  • They should be centred at the bottom quarter points (i.e. equal distance).

  • The blocks should be 1.5mm narrower than the channel width.

  • Lock-strip gasket systems also require setting blocks.

    Recommendations can be obtained from the gasket manufacturers.