Therma-Tru SHOP 3 Door Preparation - U1 Revised - Manual (Page 45)

Door
Preparation
Shop 3 2014 (U1 REVISED) 3.45
Door Bottom Selection & Installation
Kerf Door Bottoms
Caulk and Fasten Door Bottom
Select a sealant (Elastomeric or Polyurethane)
that provides excellent adhesion to both plastic
and wood.
Apply sealant as shown to both ends of door
bottom.
Center door bottom and press into rail kerfs.
Fasten ends of door bottom with (2)
1/4” or 1/2” crown x 3/4” or 7/8” staple
on each end.
CAUTION:
Outswing units with bumper sills
do not require door bottoms.
Fasten Door Bottom
‘90-Minute Fire Door’ Door Bottom
Slide door bottom between door and sill. Align at
ends and against inside face with lip. Screw door
bottom in place with (5) # 8 x 1/2 self piercing spear
tip screws beginning in the center and working out
to ends.
”
Door
Interior
Door/Sill
Gap
1/4” or 1/2”
crown x 3/4”
or 7/8” staple
Interior
side
of
door
Fig 1.1
Sealant
Interior
side
of
door
Sealant
1/4” or 1/2”
crown x 3/4”
or 7/8” staple