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General Instructions

Failure to use these guidelines may void the product warranty.

Local building codes may require additional application

techniques beyond these instructions. In such cases, the local

codes must be followed.

Note: Do not use lead or copper with this steel roofing system.

Install on roof slopes of at least 4:12. Slopes less than 4:12 are

considered decorative and must be applied over a roof system

complying with local codes.

New Construction: Panels are to be installed over solid decking.

Acceptable substrates include exterior grade plywood (min.

3/8) conforming to specifications of the American Plywood

Association and/or 7/16 oriented strandboard or chipboard.

When installing over existing asphalt shingles, cut-back the

Screws: Use a minimum of at least 4 corrosion resistant screws

not smaller than a #8 hex head. Make sure they are long enough

to penetrate the deck by a minimum of 1/2. Recommended

length is 1-1/2 long.


High Wind

In areas prone to hurricanes and high winds (in excess of

100 mph 3 second gust), installation must meet local standards

and codes. A minimum of four #12 screws must be used in the

field of the roof. Panels around the perimeter at rakes, directly

along the hips and gables, on the top two courses and bottom

two courses should be fastened with eight #12 screws at

eight evenly spaced locations. Also, these panels around the

perimeter should have a DECRA Shingle High Wind Channel

over the back Clip-Lock.

Standard underlayment should consist of one layer of Type 15 or one

layer of Type 30 felt. It is required that a layer of underlayment be used

before applying the DECRA Shingle.

In areas subject to ice build-up, a self-adhering modified bitumen sheet

shall be used in lieu of a standard underlayment around the perimeter of

the roof and any other areas prone to ice build-up or as code requires.

This protection should extend from the roof edge to a point at least 36

inside the exterior wall line of the building.


Use the Shingle Starter Clip with Drip Edge along the eave and paint

the Drip Edge before installing. Prior to fastening the Shingle Starter,

cut the top clip where it meets the rake/gable, valley, and roof-to-wall

to allow for installation of the channels and valley. Cut back Top Clip

approximately 3 for Shingle Rake/Gable Channel & Shingle Roof-to-

Wall Channel. For Shingle Valley, cut back clip enough to accommodate

Shingle Valley. All channels and valleys must be installed over the

Starter Clip and extend 1 over the fascia.

Notch and overlap Starter pieces 1 when joining two pieces together.

Fasteners should be spaced 6 on center.

In the event that the Shingle Short Course Clip is used in place of the

Starter Clip w/ Drip Edge, a bead of polyurethane sealant is required

between the Short Course Clip and the existing drip edge. The bead

should be of adequate size to alleviate any water penetration between

the two materials. Follow notching and installation instructions above.

Standard metal drip edge should be installed along all rake/gable

edges. Position and fasten the Rake/Gable Channel directly to the

drip edge allowing it to extend 1 minimum beyond the fascia. Install

channels overlapping pieces 1. Screws should be spaced 6. Where

the Shingles fit into the Rake /Gable Channel, proper drainage will be

attained by removing 2 from the front and back Clip-Locks on each

panel. The Rake/Gable Channel provides a finished channel/cover for

the panels at the roofs edge.

Roof Penetrations

Roof penetrations should be finished by installing standard roof

jacks over a corrosion resistant Underpan which drains over the panel

immediately below. A 2 wide notch must be cut out of the front

Clip-Lock of the Shingle panel covering the jack. This will allow

water drainage from the Underpan onto the Shingle panel below.

Roof-To-Wall Side Flashings

Install the Roof-To-Wall Channel overlapping pieces 1. Channel

must extend 1 beyond the fascia or onto the panel below. Cut the

shingle panel to length. Make a 2 notch at the front and back

The Shingle Valley must be positioned along the center line of each

valley area. Overlap valley a minimum of 6 over the valley piece

below. Fasteners should be positioned outside the last turn-up on each

To notch the panels, cut 2 off of the front and back Clip-Locks of

each panel on the side that fits into the Shingle Valley. The first panel

on each side at the bottom of the valley must also have a 1 notch cut

4 from the end of the panel where it fits into the DECRA Shingle

Valley. The figure below shows the areas that must be notched.

Field Panels

DECRA Shingle Installation PATTERN uses full and 1/2 panels. The

first course of panels lock into the Starter Clip w/Drip Edge. Subsequent

courses of panels simply lock into place by sliding the nose of

each panel onto the clip that is formed at the top edge of each panel.

The right side of each panel must be compressed and pushed into position

to engage the Side-Lap locking mechanism. This will secure the

right Side-Lap and provide a clean appearance. Stagger Shingle panels

and install from right to left. Make sure the front Clip-Lock at the nose

of each panel is not bent.

1. FIRST COURSE: Start at the rake edge, valley or hip and continue

course with full panels locking into the Starter Clip w/Drip Edge.

2. SECOND COURSE: Start at the rake edge, valley or hip with a panel

that is 28 in length (panel exposure is 25). Measure from the left

side of the panel 28 to make the cut. See diagram above.

3. THIRD COURSE: Start at the rake edge, valley or hip and continue

course with full panels.

4. FOURTH AND SUBSEQUENT COURSES: Continue application,

repeating second and third course instructions.

Field Panel Installation (suggested)

1. Set the panel into the top Clip-Lock of the panels on the course

below. Firmly push (by hand or foot) at the front edge of the

panel in the area that overlaps the joint of the two panels below.

2. After positioning the panel in Step #1, firmly push (by hand

or foot) on the left side of the panel until it is locked firmly into

3. Firmly push (by hand or foot) on the right side of the panel and

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