EFCO 8750XD - Manual (Page 15)

EFCO 2012 Page 15
Series 8750XD Unitized Curtain Wall Installation Instructions
8. Using an approved solvent or cleaner, clean the sealant contact surfaces of the corner splice joint of all oils and other contaminants.
9. The starter sill will be spliced at corner conditions. Refer to the approved shop drawings for project specific joint size.
10. Anchor the new starter sill section ensuring the starter sill is level and while maintaining the appropriate joint size at the splice joint.
11. Slide the base anchors into the corner, butting them together.
12. Apply sealant into the joint between the sections of starter sill and tool smooth to create a water tight seal. Use backer rods in the joint where appropriate.
The splice joint width will vary per project requirements. See Figure 11.
13. Apply a bed of sealant over joint then and use pieces cut from HC13 silicone splice sheet to cover joint. Apply sealant around the edges and seams of the
pieces cut from the splices sheet. See Figures 12 and 13.
Section 3 - Static Starter Sill Preparation and Installation (90° Inside Corner)
Figure 10
Seal over all
edges of
splice sheets.
Static Starter Sill
Bed of sealant
Serrated Washer
Anchor bolts as required.
Shim starter sill to
proper elevation
height.
Pieces of Silicone
Splice Sheet (2)
Slide base anchors into
final position before
securing anchors.
Sealant
Figure 12 Figure 13
Figure 11 90° Inside Corner
Butt Joint Typical
Seal over all
seams between
splice sheets.
Back seal down leg