Installation Instructions

FLASHING AND MOISTURE CONTROL:
The structure on which MiraTEC trim is applied should be well ventilated and dry. Do not apply MiraTEC
trim over wet sheathing, or any closer than 6˝ to finished grade such as flower beds, mulch, or final
landscaping per local building codes. As with all wood products, MiraTEC trim should not come in
direct contact with masonry or concrete. At foundations or exterior brick veneer, the product should be
separated from the masonry by metal flashing, polyethylene film, 30 lb. felt or a 1/4˝ to 1/2˝ air space
using masonry standoffs. In all applications, MiraTEC trim should not be allowed to stand in water.
Seal the trim applications to prevent water intrusion. Do not allow water to stand on or leak behind any MiraTEC trim. MiraTEC trim used in a horizontal application,
including window and door headers, must be properly flashed in accordance with the siding manufacturers’, window manufacturers’ or door manufacturers’
application requirements and local building codes.
ADHESIVES:
Glues or adhesives can be used on MiraTEC trim, such as on mitered joints for outside corners or column wraps. JELD-WEN, inc.
recommends a high quality exterior grade yellow carpenters glue or a high quality polyurethane adhesive.
Vinyl J-Channel:
Maintain a min 1/4” gap and fill with caulk
where the MiraTEC butts against vinyl
j-channel. This applies for both vertical and
horizontal applications of trim and j-channel.
16'' O.C.
Framing
1/2'' min
Continuous
horizontal
flashing with
drip and 2˝
(min.) overlaps
and joints
Siding
Window or door
head casing, water
table or other
horizontal trim
Gap 1/8''
Seal Joint
Double nail on both sides of butt joint
CORRECT
INCORRECT
16'' max
16˝ O.C.
Fascia Application
Rafter
Fascia
24" max
Sub-fascia is
recommended
in regions of
high humidity
or extreme
humidity changes.
MiraTEC trim
Flashing
1/2˝ Space
MiraTEC
MiraTEC trim
Flashing
1˝ gap
between
the shingles
and trim
MiraTEC trim
Flashing
1/2˝ Space
MiraTEC
MiraTEC trim
Flashing
1˝ gap
between
the shingles
and trim
1/2'' Gap Between
Trim and Flashing
Flashing
MiraTEC
Flashing
MiraTEC
MiraTEC
Paint bottom edge
before install
1/4˝ Clearance
Properly flash and space at least
1/2˝ from any concrete flatwork
(such as porches, patios, or
driveways) or horizontal brick
ledge.
MiraTEC
Shutters
24˝ max.
spacing
MiraTEC trim can be used to make
decorative shutters. The shutter must
be fastened to the home a minimum of
24˝ on center around the perimeter of
the shutter as shown in the illustration.
Working shutters will not be covered by
the MiraTEC limited warranty based on the
inability of providing adequate fastening on
the non-hinge side of the shutter.
When facing the skirt boards on deck,
properly flash the top edge to prevent
water from getting behind the trim. As a
substitute for flashing, use 1/2˝ standoffs
to provide a space behind the backside of
the trim and the deck skirt board.
When vertical trim meets flashing at
the top of trim or siding, provide a 1/4˝
clearance from the bottom of the trim to
the top of the flashing.
MiraTEC
Trim
1/4˝ Gap
Caulked
MiraTEC
Trim
1/4˝ Gap
Caulked
Vinyl
J-Channel
Siding
MiraTEC
Trim
1/4˝ Gap
Caulked
MiraTEC
Trim
1/4˝ Gap
Caulked
Vinyl
J-Channel
Siding
SPECIFIC APPLICATIONS
For applications near rooflines, such as dormer and chimneys,
the trim should be installed with a minimum of 1˝ clearance
between the roofing and the bottom edge of MiraTEC trim.
At the junction of the roofing material and vertical surfaces,
flashing is required per the roofing manufacturers’ application
requirements and local building codes.
SEALANT:
Sealant is required at butt, mitered, scarfed and beveled joints and where MiraTEC trim abuts
siding, windows, doors or other materials. Use only exterior quality sealant that remains flexible
over time. Do not use hard-setting caulk. Apply caulk according to the manufacturer’s written
instructions. JELD-WEN, inc. recommends caulks and sealants that meet ASTM C920. Do not
use Bondo
®
or similar hard setting fillers or putties on MiraTEC trim. They will crack over time
due to the natural expansion and contraction of the trim.
Windows:
Maintain a min 1/4" gap and fill with
caulk where the MiraTEC butts against
windows. If the window installation
instructions call out a different gap, then
default to their published instructions.