Therma-Tru Doors Troubleshooting - Manual (Page 4)

Trouble Shooting
4.4 2014 SITE 4
Water Leakage Around or Under Sill
SITE 5 - Weatherstrip
Replacement
PROBLEM: Water leakage around or under sill.
Cause Solution Refer to…
Door not meeting weatherstrip
evenly when it closes, hitting
the top to bottom first.
Damaged or painted
weatherstrip.
Improper/insufficient sealant
and/or sealant breakdown
between sill and subfloor.
Broken seal where the sill
meets the jamb.
Sill humped or depressed
beyond range of door
bottom’s sealing capacity.
Humped sill.
Damaged sill saddle causing
door bottom bulb seal to
bunch up and wrinkle when
the unit closes.
Realign, reshim, readjust
lockside jamb so door
meets weatherstrip evenly
from top to bottom.
Replace weatherstrip.
Reseal under sill using
Elastomeric and Polyurethane
sealant.
Remove corner seal pad, pull
out weatherstrip at bottom, and
place a bead of Elastomeric and
Polyurethane sealant along
entire joint where jamb and sill
meet. Replace weatherstrip
and reapply corner seal pad.
Anchor sill to draw down
straight by drilling pilot
holes and securing with
galvanized screws.
Replace any wrinkled/torn
door bottom.
Shim jamb legs up to allow
sill to straighten. Reseal with
Elastomeric and Polyurethane
sealant under sill and anchor
sill in place.
Replace the saddle and
screw down.
SITE 1 - Pre-hung
Unit Installation
SITE 1 - Pre-hung
Unit Installation
SITE 1 - Pre-hung
Unit Installation
SITE 5 - Adjustable Sill
Threshold Replacement