SUPPLEMENTARY

MULTIFLEX FIRE BARRIER

90° CORNER SPLICE

INSTALLATION INSTRUCTIONS

IMPORTANT:

READ THROUGH ALL INSTRUCTIONS PRIOR TO STARTING INSTALLATION

Prior to the commencement of Installation all materials MUST be

inspected for Damage. Any damage must be reported to Construction

Specialties as soon as possible, so that replacement materials may be

furnished without delay.

All work must be completed as per Architect's Approved "Shop

Drawings", and in accordance with these Installation Instructions. When

installation is complete, all materials must be protected from damage

until the Architect's FINAL INSPECTION.

IMPORTANT

INFORMATION

All materials should be arranged in the order that they are

to be installed. All hardware required for each portion of

the work should be placed with the appropriate materials.

Please review all Approved Shop Drawings and this

Document to familiarize yourself with all the details and

components of this assembly.

10/9/14

12ET

This document is the property of Construction Specialties, Inc. and contains

CONFIDENTIAL PROPRIETARY INFORMATION that is not to be disclosed to

third parties and is not to be used without approval in writing from

Construction Specialties, Inc.

General Instructions:

* Fire Barriers must be installed in accordance with installation instructions to maintain UL Rating.

* These instructions are for all horizontal Multiflex and Monoflex installations. For 7"-20" nominal joint widths galvanized

flanges are welded to the fire barriers as shown on the following pages. For 1"-6" nominal joint widths galvanized

flanges are not attached, follow instructions and notch flanges as required. Galvanized flanges are always required for

installation.

* The 7"-12" nominal joint width barriers are a single draped system.

* The 13"-20" nominal joint width barriers are a double draped system as shown.

* Typically, the same fasteners can be used to fasten the cover plate mechanism and the fire barriers.

* See separate installation instructions for straight runs of fire barrier.

* Wear heavy duty work gloves and eye protection during the entire installation process.

Packaging:

One kit with the necessary material for splicing.

Material Preparation:

Set the product out face up (the side with the UL label) and cut to length.

GENERAL NOTES

CRIMP AT CENTER

OF INSULATION

TO HELP FACILITATE

INSTALLATION

Fig. A - 90° Corner Splice

Material Preparation

GALVANIZED

FLANGE

ATTACHED

PAGE 2

INTER-LEAFING CUTS

SPLICE PINS

90° CORNER SPLICING INSTRUCTIONS

The following instructions are to be used to splice together two pieces of expansion joint fire blankets creating a 90° corner. It is

recommended that this procedure be performed prior to installation on a flat surface. After the splicing of the 90° corner is completed,

the installation procedure remains the same as described in the model size fire barrier type installation instructions.

Note: Fire Barriers must be spliced in accordance with splicing instructions to maintain UL Rating.

Fig. 1

Fig. B

JOINT WIDTH SPLICE ZONE

PAGE 3

*THIS SIDE OF THE FIRE BARRIER /

GALVANIZED FLANGES FORMS

THE 90° INSIDE CORNER TRANSITION

TOP VIEW OF GALVANIZED

FLANGES TO BE SPLICED

JOINT WIDTH SPLICE ZONE

* THIS SIDE OF THE FIRE BARRIER /

GALVANIZED FLAGES FORMS

THE 90° OUTSIDE CORNER TRANSITION

NOTCH OUTSIDE CORNER

FLANGE 1

1

4

" IN FROM

SPLICE FACE

STEP 1

Lay each blanket segment on a flat surface. Measure and mark the joint width distance on the inside 90° corner of the galvanized

flange of each blanket to be spliced. This will be the splice zone. Remove only the tie pins within the splice zone of each blanket

segment (See Figs. 1,2,& B).

90° CORNER SPLICING INSTRUCTIONS

STEP 2

On the opposite side of the fire barrier at the galvanized flange blanket portion (surface mount or low profile flanges) measure and

mark 1

1

4

" in from the end on the blanket portion of the flange only. If fire barrier flange is a low profile flange (* As seen in Fig. 3 below)

measure and mark 3/4" in on the anchor portion of the galvanized flange a "V" CUT. Cut out only these marked locations on the

flange.

Fig. 2

Fig. 3

MEASURE 1

1

4

" ON BLANKET PORTION

OF GALVANIZED FLANGE

PAGE 4

THIS SIDE OF THE FIRE BARRIER /

GALVANIZED FLANGE FORMS

THE 90° OUTSIDE CORNER TRANSITION

BLANKET PORTION

GALVANIZED

FLANGE

ANCHOR PORTION

GALVANIZED

FLANGE

MEASURE 3/4" ON ANCHOR

PORTION OF GALVANIZED

FLANGE

90° CORNER SPLICING INSTRUCTIONS

STEP 3

Cut off the pre-welded flanges in the joint width splice zones of the inside 90° corner (See Fig. 4). At the outside 90° corner, trim off

the 1

1

4

" of the blanket portion flange and

3

4

" of the anchor portion of the low profile flange (See Fig. 5 below).

Fig. 4

Fig. 5

PAGE 5

90° CORNER SPLICING INSTRUCTIONS

STEP 4

At the splice zone areas, inside 90° corner, cut back the top screen and foil areas. Carefully fold back the top screen and foil layer

exposing the fire barrier insulation layers. (See Fig. 6 & 7) Note: Monoflex (OFX) fire barrier does not have a top or bottom screen

layer.

Fig. 6

Fig. 7

PAGE 6

90° CORNER SPLICING INSTRUCTIONS

STEP 5

Make a cardboard concave and convex template to create the splicing arch of the insulation fire barrier layers. The template will equal

the joint width plus 4". The template width is the fire barrier blanket width. The convex or concave arch is 2 1/2" from the diagonal line.

Mark on template the outside corners.

Fig. 8

Section of Splice Zone

Fig. 9

METALLIC SEPTUN LAYERS

BETWEEN INSLUATION

LAYERS

TOP SCREEN AND FOIL

PAGE 7

SPLICE ZONE

DISTANCE =

JOINT WIDTH

SPLICE ZONE

DISTANCE =

JOINT WIDTH

CL

TEMPLATE

WIDTH =

FB BLANKET

WIDTH

DRAW DIAGONAL

LINE BETWEEN

CL CL

2 1/2" DISTANCE

STEP 6

Using the cardboard templates to make convex and concave type archs, alternating at each insulation blanket layer, cutting away the

layer of insulation in the splice zone of each blanket segment. Be careful not to cut away the metallic septum layer (foil layers between

blanket layers) in cutting the insulation (See Figs. 8 - 13). Fold the septum (foil) layer back before cutting the next fire barrier insulation

layer. Make the opposite cuts on the other half of the splicing fire barrier.

T

R

IM

A

W

A

Y

CARDBOARD TEMPLATE

INSULATION BLANKET AREA

TO BE TRIMMED AWAY

2" 2"

OUTSIDE

CORNER

OUTSIDE

CORNER

90° CORNER SPLICING INSTRUCTIONS

ALTERNATE CUTTING A CONVEX

TO A CONCAVE CURVE FROM THE

INSULATION BLANKET LAYERS

PAGE 8

FOLD BACK EACH SEPTUM (FOIL)

LAYER PRIOR TO CUTTING THE

NEXT INSULATION BLANKET

LAYER

Fig. 10

Fig. 11

Fig. 12

Fig. 13

90° CORNER SPLICING INSTRUCTIONS

STEP 7

Overlap the bottom foils bringing together the two blanket segments and flanges, then interweaving the septum (foil) and insulation

layers (See Figs. 14 - 16). The splice should not have any gaps. Overlap the top two screens . Install two pins joint sizes 10" and

smaller, three pins for joint sizes larger than 10". Install pins from the bottom of the slpice zone, through all foil and insulation layers

and both of the outer screen layers (See Fig 17). *Note: Monoflex (OFX) Fire Barrier does not have a top or bottom screen layer.

Fig. 14

INSULATION BLANKET

LAYERS

Fig. 16

SPLICE ZONE

WIDTH

BOTTOM SCREEN

AND FOIL

PAGE 9

Fig. 15

MATCH UP INSULATION LAYERS

FROM THE TWO FIRE BARRIER

SEGMENTS THEN THE SEPTUM

(FOIL) LAYERS CREATING A

45° ANGLE

90° CORNER SPLICING INSTRUCTIONS

STEP 8

Note: Pinned together laying flat the fire barrier will not be at a 90° angle (See Fig. 18).

To install 90° corner splice into the joint cavity, fold fire barrier along the center line of the blanket bending into a "U" shape being

careful not pull apart the splice area (See Fig. 19). Drill the appropriate size holes and secure the flanges with fasteners with a

maximum spacing of 18 inches (Reference fire barrier installation instructions for mounting Surface Mount and Low Profile Flanges).

Fig. 17

Fig. 18

SPLICE PINS

TOP VIEW OF SPLICE

PAGE 10

PAGE 11

90° CORNER SPLICING INSTRUCTIONS

STEP 9

To install the galvanized trim piece at the inside 90° corner (See Fig. 19) notch a 45° angle cut on the 12" long galvanized flange drop

piece, 1

1

2

" each side of center on the top of the flange only.

Bend trim piece at the center creating a 90°angle and install at the inside corner of the fire barrier. Attach trim miter through the top of

the attachment angle of the fire barrier using four fasteners.

Fig. 19

GALVANIZED FLANGE

NOTCHED AT CENTER

TO CREATE A 90°

MITERED CAP PIECE

45°

1

1

2

"

12"