Instructions / Assembly

ManualsBrandsArmstrong Ceilings ManualsBuilding materialsAcoustAffix 2 ft. x 4 ft. Surface Mount Mineral Fiber Ceiling Tile in White (48 sq. ft./case / 8 sq. ft. / piece)

4. INSTALLING SUSPENSION SYSTEM FOR ALL-IN-ONE SELF-STOP FASTENERS

4.1 Suspension System Overview

AcoustAfﬁx

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panels are required to be screw-attached to Furring or Armstrong

Drywall Grid. The use of furring or grid helps to

increase the product’s overall NRC performance.

4.2 Furring Recommendations

Furring for AcoustAfﬁx panels can be either metal or wood. For steel channel/hat channel, Armstrong Ceilings recommends

25-gauge 7/8" furring, however, ranges of 20- to 25-gauge metal furring can be used. For wood furring, 3/4" x 1-1/2" or

3/4" x 2-1/2" is recommended. Furring layout will be based on panel orientation.

The furring must be attached to the structure in a method that supports the full weight of the panels. Armstrong Ceilings does

not provide guidance regarding the attachment of furring to structure and is therefore not liable for any damage or installation

complications that may occur from an improper installation of furring. For guidance on the attachment of the furring to structure

please refer to the manufacturer’s instructions.

4.3 Armstrong Drywall Grid Recommendations

All installations using Armstrong Drywall Grid will require 12' Drywall Grid mains (HD8906) and Uptight Clips (QSUTC). For

side-by-side installations, you will also need 40" Drywall Grid cross tees spaced 48" on center between the two main beams.

A row of 48" Drywall Grid cross tees (XL8945P) will be installed at the midpoint of the 40" cross tees to provide attachment

points for the center row of hardware. End-to-end installations will only require Drywall Grid main beams spaced 16" apart,

and Uptight Clips.

4.4 Drywall Grid or Furring Layout

The layout of the suspension is dependent upon the desired panel layout. Panels are installed in single panel width rows with the

edges butting together long edge-to-long edge (nominally 4' wide) or short edge-to-short edge (nominally 2' wide).

NOTE: The spacing and straightness of structural components in the deck may vary so it is recommended to use an alignment

method that can operate independently from these components (e.g. laser, chalk line). The drywall grid or furring should be

leveled to within 1/4" over 10' (ASTM C636) to ensure a satisfactory visual.

Make sure at least 6" of clearance is given between the outside edges of the and the nearest possible obstruction as the panels,

when installed, will extend 4" beyond the edge of the suspension and may interfere with obstructions if sufﬁcient clearance

is not given.

4.5 4' (nominal) Wide Rows

Rows with panels butting long edge-to-long edge require three rows of

suspension. Suspension is installed perpendicular to the length of the panels.

Suspension must be spaced 4" On Center (O.C.) in from the desired short edges

of the panels, with a center row of suspension installed at the midpoint of the

panels, leaving 20" O.C. spacing between the three rows. Where the rows start

and end, the suspension should be cut 1"- 2" short of the desired panel edges

to avoid visibility of the suspension (illus. 4.5).

4.6 2' (nominal) Wide Rows

Rows with panels butting short edge-to-short edge require two rows of

suspension. Suspension is installed parallel to the length of the panels.

Suspension must be spaced 4" O.C. in from the desired long edges of the

panels, leaving 16" O.C. spacing between the two rows. Where the rows

start and end, the suspension should be cut 1"- 2" short of the desired

panel edges to avoid visibility of the suspension (illus. 4.6).

How to Install AcoustAfﬁx

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Surface Mount Ceiling Panels

20"

illus. 4.5

16"

illus. 4.6

RC-3832-1019