ATAS CastleTop User Manual

Up-turned edge

Alignment mark

Alignment Point

Alignment
Point

Locking Ta b

Down-turned Edge

Pre-Punched
fastening holes

Locking Ta b
Connecting Area

15-3/4”

Expanded
Polystyrene
Backer Board

Installation Guide

Valley @
Dormer Area

Eave Line

8-3/8”

22-1/4”

Strike square horizontal chalk line
at shingle course as a “benchmark”
to work at opposite side of valley.

Horizontal chalk line

for first course

CastleTop is a diamond shaped at metal shingle. These shingles have a unique
locking feature that allow for easy installation. The overlapping shingles have a
turned down edge on the lower front and a turned up edge on the upper front.
The panel is 15 ¾” square, net coverage is 13 ⁄” x 13 ⁄”. There are approximately
78 shingles per 100 square feet. The CastleTop shingle is packed 39 shingles
per carton, which equates to approximately half of a square.

Review and understand
complete guide before
beginning installation.

This guide has been prepared
as suggested details to
particular design conditions.
Each condition has cer tain
limitations to per formance, aesthetics
or economics. Professionals qualified to assess the
information regarding suitability for a specific project
should determine that the selection and installation
are made to their requirements. ATAS cannot assume
any responsibility for the actual selection and/or
installation of materials. The panels, flashings and trim
shown in this guide, illustrated over solid and plumb
substrate, assume that the structure has been
designed and prepared in accordance with local
building codes.

Published panel width dimensions are to be considered as nominal dimensions. Overall panel
width dimensions may vary during installation due to adjustments to accommodate as built roof
conditions.

Shingle Layout

It is recommended to apply
waterproof membrane, such as
ATA-Shield**, at eave, gable, and
valley. Place ATA-Guard*
underlayment up from the eave.
For re-roof applications, remove
the extended roof material and old
drip edge. After Starter Trim is
installed (see page 2), snap a
horizontal chalk line at 8 ⁄” from
the edge after squaring up eave.
Snap vertical lines at 11 ⁄” o.c.
Line-up shingle corners with chalk
lines to assure square alignment of
the shingles. To aid in squaring of
shingle, make sure alignment
points meet at the alignment mark
of the lower course. Shingles are
secured with three fasteners per
shingle.

Helpful hint: to square-up the
shingle, line up the top hole with the
vertical line.

Eave Detail

ATA-Guard*

Castle Top Shingle

2” Ring Shank
Grommetted Nail

HCA112
Drip Edge/
Starter Trim

ATA-Shield**

ATA-Guard*

Castle Top Shingle

2” Ring Shank
Grommetted Nail

Approriate
Fastener

HCA201
Gable Trim Cap

HCA200 Channel Trim

Butyl Ta pe

ATA -Guard*

Castle Top Shingle

2” Ring Shank
Grommetted Nail

HCA800
Valley Pan

HCA975
Joggle Cleat

ATA -Shield**

Remove foam backer from

lower part of shingle

first row only

Bend Line

Cut Line

1. When applying in a re-roof application, cut back
existing shingles and drip edge to be flush with the
eave and gable lines. Apply ATA-Shield at eave.

2. Install Drip Edge/Starter Trim. Place lap joint of
starter trim at center of shingles to hide seam.
Fasteners should be located under the center of each
shingle.

3. Apply ATA-Guard to entire roof.

4. Remove the foam backer from lower half of the first
row of shingles to assure a flat seal onto the starter
trim.

5. Cut lower part of locking edge from shingle (see
detail); bend the remaining tab inward under edge of
starter trim to avoid wind uplift. Fasteners must
penetrate solid substrate.

Gable Detail

1. Install Channel Trim on gable edge, fasten into
the substrate 12” o.c.

2. Insert cut edge of shingles into channel trim.

3. Hook Gable trim over channel, fasten with
appropriate fastners.

Valley Detail

1. Install ATA-Shield** 18” up both side of
the valley line.

2. Install the valley with the joggle cleat
maintaining a 3” clearance from valley’s
center. Place butyl tape between joggle
cleat and pan. Fasten through tape into
the substrate 6” o.c. max.

3. Overlap valley pans by a minimum of
6”.Apply butyl tape/caulk between all
valley metals.

4. Cut backer foam 1” from cut edge of
shingle and turn shingle under as shown.

5. Hook shingles onto the joggle cleat and lay in the valley pan and fasten.
Maintain square line-up of shingles.

Underlayments: ATA-Guard* is a polyolefin based, 100% asphalt free,
high strength reinforced roofing underlayment for use beneath
metal roofing on steep slope applications. 1000 sq. ft. per roll at 48”
wide.

Underlayments: ATA-Shield** is the recommended self adhesive
underlayment for eaves, sidewall and any critical areas exposed to ice
damming and extensive water run off. Available in 65’-8” x 39 ⁄” rolls
(200 sq. ft. per roll).