EFCO Terrastile Door - Manual (Page 12)

EFCO CORPORATION 6/8/2012 PART NO. YW42 Page 12 of 13
TERRASTILE DOOR INSTALLATION INSTRUCTIONS
SECTION IV: Deglazing / Reglazing
A. Deglazing
1. Cut the cap bead and glazing tape away from the door and the glass. Next, remove the glass
stops with the glazing tool. If heel beaded, cut the heel bead out as much as possible, and
remove all shims and setting blocks. Lift the old glass out of the door and discard.
2. Scrape glazing leg clean from any remaining tape or sealant.
B. Reglazing
1. Careful consideration must be used for determining the appropriate preshim back bed tape.
The back bed thickness is based on the actual glass thickness.
Measure the metal to metal gap and subtract the actual glass thickness and nominal ¼” for the
compression gasket. This should be the appropriate gap for the tape in the compressed stage.
The compressed state of the tape is typically to the diameter of the preshim rod or 10 to 25
percent of the total tape thickness. Install the tape in accordance to the tape manufacturer’s
recommendations.
2. Insert setting blocks on each side of the glass, 6” from the glass corners, as required, based on
configurations shown in Fig. E below. Use silicone on the back of the setting blocks to keep
them in the correct position until the glass is installed. The glass must be blocked tightly at the
four locations shown in Fig. E for a smooth operating, nonsagging door leaf. Block so that the
two diagonal dimensions of the door leaf are equal. Operate the door. Should the door leaf
bump or hit the sill, which will usually be the case, adjust the upper block by adding extra shims.
Add shim/blocks until the sill end of the door leaf operates smoothly over the door frame sill. A
properly aligned door will have a nominal 1/8” or equal gap between the frame and operable
door leaf. (See Fig. C on page 6)
3. To reinstall the glass stops, follow the slide and hook diagram shown in Figs. F and F1 on the
following page.
Setting Blocks
Head of Door
Hardware
Side
Sill of Door
Hinged
Side
Fig. E
6”
6”
Upper
Block
Block
Block
Block
Add extra
shims to the
upper block
to adjust the
hardware
side rail up.