Setting Glass in Glass Railing Base Shoe Molding

The glass may be set into the shoe with a wet or a dry glaze process. 

PanelGrip Installation:

  1. Plumbing PanelGrip Base Shoe Moulding

    Before completing attachment of PanelGrip Base Shoe Moulding to substrate – take all necessary steps to assure that the mounted Shoe is adjusted such that the inside channel of the Shoe is plumb to +/- 1/8″ at an extended height of 42″. Spend the time required to plumb the Shoe to this tolerance since the glass will only be as plumb as the Shoe.

  2. Clear the PanelGrip Base of All Debris.

  3. Place Isolators:

    Place the PanelGrip Plastic Isolators into the Base Shoe Moulding. On inclines, a dab of silicone may be used to keep them in place while placing glass. Space Plastic Isolators a maximum of 14″ on center with a maximum of 4″ in from the left and right edges of each panel – 4 isolators per 4 foot panel.

  4. Place Glass:

    Place the glass atop the Plastic Isolators in the Base Shoe Moulding.
    Warning: With multi-panel Railings, do not line up the edge of a panel with the end of the Base Shoe Moulding – place the panels so that they span PanelGrip Base Shoe Moulding butt joints to assist in alignment.

  5. Insert PanelGrip:

    Have someone hold the panel in place while you insert the Aluminum PanelGrip mechanism into place on the opposite side of the glass in alignment with the Plastic Isolators. Make sure that the plastic pad on the PanelGrip is facing the glass.

  6. Tighten PanelGrip:

    Using a 3/16″ hex head wrench or the PanelGrip Torque Wrench, tighten the Cap Screw on the PanelGrip mechanism. While tightening, the plastic pad will break away from the Aluminum as the unit expands.

  7. Confirm Alignment and Tighten:

    Confirm alignment and make adjustments prior to final tightening which will compress and lock the panel into place.
    Remember, PanelGrip is self-centering and self-plumbing. Make sure you have properly plumbed the Shoe as noted in Step 1.

  8. Insert Spacing Pads:

    Repeat with other lites of glass. Insert 1/4″ Spacing Pads between glass panels to prevent glass-to-glass contact. Trim as required.

  9. Seal top of shoe:

    Once glass is properly positioned, seal gap at the top of the PanelGrip Base Shoe Moulding using one of the two Gasket styles shown on page 108. Spray glass cleaner onto glass to facilitate insertion of gaskets.

  10. Removal of Glass:

    Should you need to remove a panel, this can be done simply by loosening the PanelGrip Cap Screw.











Click here to learn more about Wagner’s PanelGrip® dry-glaze

The following wet glaze method is historically the most common in setting glass in base shoe molding. It requires a “wet” filler of either quick setting expansion cement or silicone. The PanelGrip system provides a dry mount option that will reduce glass setting labor costs by 75%.

In a wet mount system, the general procedure for setting the glass is as follows:

1.     Place setting blocks into the shoe to center the glass, provide support, and prevent glass-to-metal contact. The setting block does not need to run continuously and should be placed 1/4 the width of the lite of glass from each end. Spraying glass cleaner on the setting blocks can make later glass placement easier.

2.     Set the glass into the setting blocks. Use shims to position the glass vertically plumb. Align your glass for its final position.

3.     Affix the glass into the shoe molding using a filler. As mentioned earlier, the choice of filler may vary depending on the installer and specifications. Some installers will use a silicone or expansion cement. Some will use a combination of the two. By far, the most common filler used are quick-setting expansion cements such as Rockite. Do not use epoxy-based fillers. Warning: Do not use Portland based cements as filler with laminated glass.

4.     Insert a backing rod and top with silicone for exterior applications to prevent water accumulation. Otherwise, use our gasket along the top.


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