Impower series, Hr3 roof panel installation – Metal Sales IMPower Series User Manual
Page 20
© Metal Sales Manufacturing Corporation / Subject to change without notice 1/14
19
IMPower Series
TM
20.4 The starter panel should be fastened as shown on the shop drawings. The panel should be fastened at each purlin at the rake edge.
20.5 A
3
/
32
" x
1
/
2
" wide strip of butyl tape sealant should be placed on the hi rib starter panel to be overlapped.
Note: for extreme conditions, (optional) liner-side caulking should be considered in addition to tape sealant at overlaps.
20.6 Once the caulking has been placed, the overlapping panel should be placed as soon as possible.
20.7 Square each panel before installing fasteners. Prior to installing, panels may need to be placed in a shaded area to prevent excessive
thermal bow which may hinder panel engagement.
20.8 If pre-drilling is required, use the drill bit sizes listed below.
Material
Fastener
Type
Drill
18 GA. to 16 GA.
1
/
4
- 14 Hex Head 3 Self-Drilling Fastener w/ Seal Washer
5
/
32
" Pilot
14 GA.
1
/
4
- 14 Hex Head 3 Self-Drilling Fastener w/ Seal Washer
3
/
32
" Pilot
12 GA.
1
/
4
- 14 Hex Head 3 Self-Drilling Fastener w/ Seal Washer
#3 Drill
11 GA.
1
/
4
- 20 Hex Head 3 Self-Drilling Fastener w/ Seal Washer
#3 Drill
3
/
16
" to
3
/
8
"
1
/
4
- 20 Hex Head 3 Self-Drilling Fastener w/ Seal Washer
#1 Drill
3
/
8
" & Heavier
1
/
4
- 20 Hex Head 3 Self-Drilling Fastener w/ Seal Washer
0.231" Pilot
20.9 Panels are to be fastened per the roof panel fastening schedule and calculations noted on the shop drawings. To install fastener, pre-drill
using the correct drill size (see 20.8, above). Prior to placing saddle washer, a bead of butyl caulk should be placed into the pilot hole.
Set the "SW-01" saddle washer in place and insert the fastener through the clip. Apply pressure to connection point by standing directly
on the overlapping hi rib panel to ensure that the joinery is fully nested and tighten down until assembly is snug. Use a 600 rpm electric
screw gun to drive fasteners. Do not use impact tools as these devices will over-tighten and cause damage.
20.10 The fastening pattern will depend on the panel thickness, span, substrate, and design loads. Consult your all weather insulated panels
representative or the factory for allowable panel and fastener design loads. If (2) saddle washer assemblies are required, always put the
second saddle washer assembly next to the overlapping hi rib (see figure 13, below).
20.11 After the main fasteners are in place the overlapping rib should be fastened down with #14 x
7
/
8
" self-drilling stitch lap screws, finished to
match panel (see figure 14, below).
Figure 13
Figure 14
"SW-01" saddle washer
w/
1
/
4
" - Tek fastener
into support member
1
/
4
" - 14 x
7
/
8
" Stitch
at 16" on center
1
/
2
" x
3
/
32
" butyl
tape sealant
1
/
2
" x
3
/
32
" butyl
tape sealant
20"
HR3 ROOF PANEL INSTALLATION