Quickwrap Duct Installation.qxd_Duct Installation.qxd - Unifrax

Quickwrap Duct Installation 

(ULC Test Method – For Canada Only) 

Installation Instructions 

EWC/FRD-PHV/120-01 

(Formerly Known as RQ/FRD-PHV/120-01) 

(Fire Resistance Ratings) Stability, Integrity and Insulation 

1 & 2 Hrs Fire Resistant Duct 

Commercial & Institutional Grease Duct Exhaust or 

Ventilation Air Duct System 

Tested for zero (0“) clearance to Combustible material per ULC 

Canadian Grease Duct Testing Protocol & Ventilation Air Duct system 

for both 1 & 2 hr fire protection per ISO-6944 Duct ‘A’ standard. 

Rated for Internal & External Fire Conditions 

Quickwrap


Quickwrap Duct Installation 

(ULC Test Method – 

For Canada Only) 

Grease & 2-hour Ventilation 

Air Duct Systems 

Two-layers of Quickwrap Fire Resistant duct 

insulation wrap constructed as follows: 

• First Layer installation allows butt seams 

throughout. 

• Second Layer installed with a MINIMUM 8” 

overlapping seam over the first layer using either 

butt seam Quickwrap Butt Wrap ‘Double 

Banding’ Method, Quickwrap ‘Pinning Only’ 

Butt Wrap Method, or Quickwrap ‘2nd Layer 

Overlap’ Method. 

• For 2 or 3-sided systems see Quickwrap ‘2 or 3’ 

Sided Pinning Only Method or Quickwrap ‘2 or 3’ 

Sided Banding Method. 

1-hour Ventilation Air Duct Systems 

• For one hour Ventilation Air Duct Systems, only 

one layer of Quickwrap Fire Resistant duct 

insulation wrap is required using butt seaming 

methods or 3” overlap method. 

Grease Duct System 

• Maximum 40” x 40” (1600 sq. inch) - 

Rectangular, Square, or Round #16 Gauge 

Grease Duct Assembly 

Ventilation Air Duct System 

• Maximum 2915 sq. inch Rectangular, Square, or 

Round #26 Gauge or Greater Air Duct Assembly 

1 

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Quickwrap Duct 

Installation 

rated for maximum 300 Pa negative pressure 

within the duct • Complying with SMACNA or 

NFPA 90A requirements. 

Support Rods & Cradles 

• Minimum 3/8” steel threaded rod & 1½” x 1½” x 

3/16” steel angle cradles for ductwork not 

exceeding 160 sq. inches in size 

• Minimum ½” steel threaded rod & 2” x 2” x ¼” 

steel angle cradles for ductwork exceeding 160 

sq. inches in size 

• Support rods to be anchored to concrete using 

pass thru method with a nut & washer on the top 

of the concrete slab, or by using suitable carbon 

or stainless steel masonry anchors penetrating a 

minimum 2” depth into the concrete slab. 

• Maximum distance of 60” allowed between noninsulated 

duct supports. 

NOTE: 

• As required by site conditions, it is acceptable to 

encase the cradle support assembly along with 

the duct within the Quickwrap insulation (i.e.: 

cocoon wrap) during the installation. A slit is 

allowed in the duct wrap in order to position 

around the threaded rod. Slit must be repaired 

and sealed using Quickstop Acrylic Latex 

Sealant to a minimum depth of 1/4" with a bead 

also placed around the circumference of the 

support rod. Seams can be sealed using any 

combination of the approved installation 

methods. 

Banding (not required with ‘Pinning Only’ method) 

• ½” stainless steel banding for all grease duct and 

2-hour ventilation air duct systems installed as


outlined in Quickwrap Double Banding Method 

and Quickwrap ‘2nd Layer Overlap’ Method. • ½” 

wide carbon steel banding for 1-hour ventilation 

air duct systems 

Firestop 

• Minimum 4” depth of 4 pcf (or heavier) mineral 

wool insulation or Quickwrap Biosoluble fiber 

firmly packed into 1 or 2-hour rated concrete. 

• Full depth of mineral wool or Quickwrap 

Biosoluble fiber (less caulking depth) into framed 

gypsum wall or framed wood floor/gypsum 

ceiling. 

• Assemblies are to be topped with Quickstop 

Acrylic Latex Sealant to a min. depth of ¼” on 

top of floor or both sides of wall assembly. 

• Maximum annular space of 4” between duct and 

floor or wall substrate is allowed. 

• See Intertek Testing Services (ITS) listing 

RQ/PHV 120-01 for additional firestop details. 

Gypsum Shaft Transition (if required) 

• Should a transition be required from a gypsum 

shaft system to a Quickwrap Duct Wrap System 

the annular space around the duct and the shaft 

must be filled with a minimum of 4” depth of 

Quickwrap insulation and topped with a ¼” 

depth of Quickstop acrylic latex firestop sealant 

flush with the surface of the gypsum. 

• Quickwrap Duct insulation used for wrapping the 

duct must firmly abut the firestop. 

2 




Quickwrap ‘Double-Banding’ Method 


• Requires two (2) layers of Quickwrap fire 

resistant duct insulation in accordance with 

manufacturer’s instructions for grease & 2-hour 

ventilation air duct systems. 

• Only single layer of Quickwrap required for 1hour 


• All cut ends of insulation to be repaired with 

aluminum tape. 

• Longitudinal seams on 2nd layer to overlap 

longitudinal seams on 1st layer by minimum of 

8”. 

• Circumferential seam of 2nd Quickwrap layer to 

overlap circumferential seam of 1st layer by a 

min. of 8”. 

• 1st and 2nd layer seams installed either by 

compression fitting or by sealing any maximum 

¼” wide voids in the insulation seams with 

minimum of ½” depth of Quickstop Acrylic Latex 

Sealant. 

• Pinning required on 2nd layer Quickwrap joints 

per Figures 1 to 3.




Note: Additional pins are allowed to enhance the 

integrity of the Quickwrap Installation 

3 

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Fastening 

• 1/8” copper coated steel insulation pins or Cup- 

Head Weldpins® required to be stud welded on 

bottom side of a horizontal duct equal to or 

exceeding 24” width. Pins are to be located a 

maximum 8” from edge of duct and on maximum 

12” centers in 2 rows per 24” wide exterior 

Quickwrap section. Pins are centered between 

banding on each individual wrap section – See 

bottom pinning detail (Figures 2 & 3). 

Note: No pins are required between the 

circumference seaming bands other than at the 

longitudinal joint. Additional pins may be 

installed to enhance the integrity of the 

Quickwrap installation. 

• Pins are also required on widest side of a 

vertical duct exceeding 24” in width. 

• Maximum pin-free space of 8” in from edge of 

ductwork is allowed. 

• Quickwrap is impaled on pins and held in place 

with speed clips or maybe installed prior to 

pinning with Cup-Head Weldpins®. 

• Longitudinal seams on the outside layer of wrap 

material require Quickwrap Pinning Only pins or 

a double row of Cup-Head Weldpins® located 

1½” on both sides of the seam (3” apart) midway 

between the banding on each individual exterior 

wrap section –see ‘bottom pinning’ detail. (See 

Figure 2 & 3) 

• Quickwrap is held in place by banding the 

second layer of insulation around the duct 

approx. 1½” on both sides of the seam and in 

the center of each external wrap layer. 

• No aluminum tape is required on seams, but it 

may be used for cosmetic reasons if desired. 

• Filament tape may be used around the 1st layer 

to hold the material in place while applying the 

2nd layer. 

4 




The recommended sizes Cup-Head Weldpins® 

to be used: 

Cup-Head Weldpins® Size 

1-layer Quickwrap 1 ½” – 1 5/8” 

2-layers Quickwrap 3” – 3 1/8” 

Quickwrap Pinning Only’ Method 




manufacturer’s instructions for grease & 2 hour 




• All cut ends of insulation to be repaired with 




8”.




min. of 8”. 

• Seams are installed either by ‘compression fit’ or 

by sealing any max. ¼” wide voids in the seams 

with a minimum of ½” depth of Quickstop Acrylic 

Latex Sealant. 

Fastening 

• 1/8” copper coated steel insulation pins required 

to be stud welded on all sides of duct at max. 

12” centers – max. 6” pin-free space from edge 

of ductwork is allowed. 

• Pins are to be located between the seams of the 

1st and 2nd layers of duct insulation when using 

Pinning Only pins, or 1½” on either side of 

seams (3” apart) when using Cup-Head 

Weldpins® 

• Install Cup-Head Weldpins® on both sides of 

seam. Cup-Head Weldpins® must be located 3” 

apart (1½” on either side of the Quickwrap 

insulation seams). 

• Longitudinal seams of the outside layer of wrap 

material require Quickwrap Pinning Only pinning 

at max 10 ½” centers and max. 2” from each 

edge the ductwrap material. 

• For horizontal ductwork where the bottom 

surface exceeds 24” wide; pin both sides of the 

exposed bottom seam at 1 ½” in from seam 

edge and fasten with Cup-Head Weldpins®. 



• Filament tape may be used around the 1st layer 

to hold the material in place while applying the 

2nd layer. 

5 




The recommended sizes Cup-Head Weldpins® to 

be used: 

Cup-Head Weldpins® Size 

1-layer Quickwrap 1 ½” – 1 5/8” 

2-layers Quickwrap 3” – 3 1/8” 

Quickwrap ‘2nd Layer Overlap’ Method 




manufacturer’s instructions for grease & 2 hour 




• Cut ends of insulation to be repaired with 




8”.




min. of 8”. 

Fastening 

• 1/8” copper coated steel insulation pins or Cup- 

Head Weldpins® required to be stud welded on 

the bottom side of a horizontal duct exceeding 

24” in width at maximum 12” centers. 

• Pins also required on the widest side of a 

vertical duct exceeding 24” in width with 

maximum pin-free space of 12” in from edge of 

ductwork is allowed. 

• 1st layer seams installed with butt joints either 

‘compression fit’ or by sealing any max ¼” wide 

voids in the insulation seams with a minimum of 

½” depth of Quickstop Acrylic Latex Firestop 

Sealant. 

• 1st layer insulation is fastened using filament 

tape awaiting the application of the 2nd layer. 

• Second layer of insulation installed around the 

duct is overlapped 3” in all directions. 

• Wrap is held in place by banding the second 

layer of insulation around the duct in the center 

of the overlapped seam. 



6 




Quickwrap ‘2 or 3’ Sided 

Pinning Only Method 




manufacturer’s instructions. 

• Duct to be located a maximum of 6” from the 

floor or wall assembly. 

Fastening 

• Install Pinning Only pins (or alternatively pin 

both sides of seam as outlined in Quickwrap 

‘Pinning Only’ Method) on exposed sides of duct 

and install Quickwrap duct insulation using 

instructions shown in Quickwrap ‘Pinning Only’ 

Method. 

• Overlap both layers of Quickwrap fire resistant 

duct insulation over concrete by minimum of 3” 

and fasten using min 1 ¼” OD fender washers 

over a minimum ¼” diameter steel concrete 

anchor inserted a minimum of 1 ½” into concrete 

slab spaced a maximum of 8” apart.


Quickwrap ‘2 or 3’ Sided Banding Method 




manufacturer’s instructions. 

• Duct to be located a maximum of 6” from the 

floor or wall assembly. Fastening 

• Install pins on exposed sides of duct (if required) 

and install Quickwrap duct insulation using 

instructions shown in Quickwrap ‘Double 

Banding’ Method. 

• Overlap both layers of Quickwrap fire resistant 

duct insulation over the concrete by a minimum 

of 3”. 

• Anchor with a continuous length of min. 3/16” x 1 

½” wide steel flat bar over flared ends of the 

wrap material and fasten using min. 1 ¼” OD 

fender washers over a minimum ¼” diameter 

steel concrete anchors inserted a minimum of 1 

½” into the concrete slab spaced a maximum of 

8” apart. 

• Banding to be installed over the wrapped duct 

with ends looped around the steel flat bars, 

tightened and clipped as required. 

• Quickwrap fire resistant duct insulation is to be 

installed essentially to the requirements of 

Quickwrap ‘Double Banding’. 

7 



Installation


Access Door Detail 

Section View of Assembly 

Assembly 

• Cut three pieces of Quickwrap. Two pieces must 

have a min. 1-in overlap over the access door 

opening. The third piece is sized to the access 

door. Per above drawing. 

• Cover all exposed insulation piece ends with foil 

tape. 

• Weld 4 insulation pins on each corner of a light 

gauge galvanized steel cover plate. Tighten all 

8 




three Quickwrap layers through the insulations pins 

and fasten assembly with speed clips. 

• Weld 4 threaded rods to the door flange. Per above 

drawing. 

• Thread through the threaded rods the access door 

cover, and the entire 3-layer Quickwrap assembly. 

Fasten tightly with butterfly nuts.

Quickwrap Duct Installation.qxd_Duct Installation.qxd - Unifrax

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