Oldcastle BuildingEnvelope Signature Series Unit Wall - Manual (Page 11)

July 2013 10-Install-Starter-Sill 1-866-Oldcastle (653-2278) www.oldcastlebe.com
STARTER SILL CONDITION
1. INSTALL STARTER SILL
Locate starter sill per approved shop drawings. The starter sill must be level and straight. The starter
sill should run continuously across elevation, whenever the splicing is necessary, a min. 3/16" gap
should be left for proper seal in-between starter sills.
Install windload anchor lug at each mullion location, crimp the windload anchor lug in place on starter
sill. Install starter sill fasteners. Ensure fastener heads will not interfere with frame sill horizontals.
Seal over all fastener heads and tool sealant.
2. CHECK AND PROPERLY LOCATE PVC SPACERS
The 4" long V927 rigid PVC spacers should be pre-assembled on each starter sill. Three pieces of
PVC spacers are required per module. One should be located at center of the module, two other
pieces should be located at each mullion location.
3. PROPER SEAL AT STARTER SILL
Clean and prepare substrates for sealing per sealant manufacturer's recommendations. Apply backer
rod and perimeter seals under starter sill. Tool sealant. Apply sealant at splice joints. All splice joints
should be sealed from the drainage hole on the starter sill to the top of the upturned leg. Connect
sealant at underside of starter sill with sealant at splice joint. See illustration on p.11.
Apply sealant at outer surface for approximately 1" on each side of the joint as shown; set 1-1/2" wide
by 3" long silicone sheet on top of the silicone sealant.
SIGNATURE SERIES UNIT WALL INSTALLATION MANUAL
Ensure starter sill fixing bolt
will not interfere with frame
sill horizontals
Requires a min. 3/16" gap
at splice joint
for proper seal
The windload anchor lug
should be crimped in place
at every mullion location