The preassembled staircase has long been considered the most feasible method of stair building. Its advantages of fast installation and jobsite labor savings are well known. And now Cooper Stairworks’ most recent adaptations and enhancements to our stair systems demonstrate additional savings over site-built stairs, exceeding the quality expectations of the most discerning craftsman.
PREASSEMBLED STAIRS AND PREFIT RAIL SYSTEMS
INTEGRATING TRADITION AND INNOVATION SINCE 1974
For nearly five decades, Cooper Stairworks has been at the forefront
of blending centuries-old methods of stair building with state-of-the-
art design and construction techniques. As you peruse this product
catalog, you will discover our commitment to offering a complete
stair system for the most selective buyers. Starting with the finest
kiln-dried lumber, we seamlessly combine old-world joinery, cutting-
edge computer technology, innovative production equipment, and
years of experience to craft strong, beautiful, and cost-effective
stairs. Step into the world of Cooper Stairworks, where timeless
craftsmanship meets modern excellence.
TABLE OF CONTENTS
1
INTRODUCTION
4
ANATOMY OF A STAIR
5
CONSTRUCTION DETAIL
6
ABOUT PREASSEMBLED STAIRS
9
CURVED STAIRS
13
STRAIGHT STAIRS
14
PREFIT RAIL SYSTEMS
17
HOW TO ORDER
18
MORE FEATURES & BENEFITS
20
MONORAIL STAIRS
23
PREFINISHING
23
WARRANTY
24
PHOTO REFERENCE GUIDE
25
USE & CARE
THE ANATOMY OF A STAIR
OVER-THE-POST Handrail runs over the newels using a series of fittings. This design provides a continuous handrail.
POST-TO-POST Handrail runs between a series of newels.
Wrought Iron Baluster
Riser
Stringer
Wood Baluster
Volute
Starting
Step Tread
Newel Post
Railing
Box Newel
Gooseneck
THE COOPER DIFFERENCE IS IN THE DETAILS
POCKET SCREW FROM RISER INTO TREAD Secures the tread to the riser to ensure a tight connection without relying on glue.
HOUSED STRINGER (on closed side)
GLUE BLOCK
WEDGE
COVE MOULDING
TONGUE AND GROOVE Creates a sure fit for the riser and tread and virtually eliminates squeaks.
RETURN NOSING
MITERED STRINGER (on open side)
WHY CHOOSE PREASSEMBLED?
Cooper Preassembled Staircases are the pinnacle of efficiency in stair
building. With a streamlined production process, our preassembled
stairs are expertly crafted in our woodworking shop in Somerset, MA,
saving valuable time and resources during installation on the job site.
NAVIGATE BUILDING CODES WITH EASE
Cooper Preassembled Staircase embody both beauty and safety. We
prioritize safety throughout the design process, ensuring compliance
with various building codes across different states, while also educating
our customers. At Cooper Stairworks, our experts are well-versed
in the intricacies of rise and run ratios, baluster spacing, handrail
graspability, headroom clearances, and more, and can provide valuable
guidance throughout the decision-making process. Trust us to create
a staircase that is not only beautiful, but also prioritizes safety and
compliance at every step.
FROM SIMPLE TO EXTRAORDINARY
Whether you’re in need of a practical utility
stair for a basement, or a magnificent
staircase to make a grand impression
in a foyer, our preassembled stairs
can be tailored to meet your specific
requirements, ensuring both functionality
and architectural elegance.
STAIR LAYOUTS
With a simple understanding of the number of risers
manufacturers with fixed bending forms, our processes
you need, you may choose a layout that fits your space
allow complete dimensional flexibility, making custom
and determine the scale and balance so critical to the
sizes affordable.
overall preliminary design phase.
Each layout can be: Constructed in any width, made
The curved layouts shown walk safely with a 10”
opposite hand, treads can be added at either end, and
or 9” run at the walk line and are designed to meet
be built with or without supporting walls
residential building codes in most areas of the country.
Our manufacturing system allows us to build each
For an expanded collection of layouts, visit our website
stair to your unique conditions and dimensions with
www.cooperstairworks.com or call for technical
no additional labor or setup. Unlike curved stair
assistance 508.235.4397
CURVED STAIRS
Cooper Stairworks has revolutionized the traditionally labor-intensive process of building curved staircases. We have
transformed what was once a challenging endeavor into a streamlined and efficient process. With our expertise and
innovation, builders can now easily incorporate the opulence of a curved staircase into any project, expanding the
possibilities of home designs.
RH
RH
60
18
18
17
17
16
16
97 15/16
15
15
14
14
13
13
12
12
11
11
15
16
14
13
10
10
12
9
9
11
8
8
10
9
7
7
8
6
6
7
5
5
6
4
4
5
3
3
4
2
2
3
1
1
2
1
FN
FN
281 3/8
CS-01
CS-02
RH
RW
97 15/16
14
13
12
14
11
13
12
10
11
9
10
RH
RW
142 7/16
9
8
8
7
7
6
6
5
14
13
12
11
10
9
8
7
6
5
5
4
4
4
3
3
F
F
46 3/4
3
2
2
2
1
1
1
CS-03
CS-04
CS-05
RH
RW
117
RH
RW
112 7/16
14
13
12
11
RW
RW
148
10
14
13
12
11
10
9
9
8
8
7
7
6
8
6
7
9
6
5
5
10
5
4
11
4
4
3
12
3
3
2
13
2
2
1
14
1
1
CS-06
CS-07
CS-08
Drawings are not to scale and dimensions shown are not meant to be read. Visit www.cooperstairworks.com to download DXF or PDF drawings.
MORE CURVED STAIRS
RH
RW
97 15/16
RW
RW
128 15/16
14
13
12
11
10
9
6
5
7
8
4
8
7
3
9
6
2
10
5
1
11
4
12
3
CS-10
13
2
14
1
CS-09
RH
RW
72 7/16
14
13
12
11
RW
RW
128 15/16
10
14
13
12
11
9
10
9
8
9
8
10
8
7
7
11
7
F
F
44
6
12
6
6
5
5
5
13
4
4
4
14
3
3
3
F
F
46 3/4
2
2
2
1
1
1
CS-11
CS-12
CS-13
RH
RW
127 15/16
8
9
14
7
13
10
12
11
6
10
11
14
13
12
11
10
9
9
5
12
8
8
7
4
7
13
6
6
3
5
14
5
4
2
15
4
F
F
44
3
16
3
1
2
2
17
1
18
1
CS-14
CS-15
CS-16
RW
RW
128 15/16
RW
RW
128 15/16
12
13
11
14
10
10
15
9
16
9
8
8
7
9
10
7
6
8
10
11
17
5
11
6
12
7
18
4
12
5
13
6
3
13
4
14
5
2
14
3
4
1
15
2
3
2
1
16
1
CS-17
CS-18
CS-19
RW RW
RW RW
255 13/16
RH
RH
97 15/16
97 15/16
60
15
16
16
15
14
14
13
13
12
12
11
11
10
10
9
9
8
8
7
7
6
6
5
5
4
4
3
3
2
2
1
1
CS-20
RW
RH
RW
RW
86
223
14
RH
RH
RW
RW
86
51
86
13
F
F
44
12
PLATFORM HT.
11
14
13
12
11
10
PLATFORM HT.
PLATFORM HT.
14
13
12
11
10
10
11
12
13
14
10
10
10
10
9
9
9
9
8
8
F
F
44
8
8
7
7
F
F
F
F
44
44
7
7
6
6
6
6
5
5
5
5
4
4
4
4
3
3
3
3
2
2
2
2
1
1
1
1
FL-01
FL-02
FL-03
Drawings are not to scale and dimensions shown are not meant to be read. Visit www.cooperstairworks.com to download DXF or PDF drawings.
STRAIGHT STAIRS
Discover the versatility of straight stairs with Cooper Preassembled Staircases. Our range extends beyond the
conventional straight design, encompassing shapes such as L-shaped, U-shaped, scissor-shaped, and more. Straight stairs
can be just as captivating as their curved counterparts.
16
15
14
14
RH
RW
14
126
14
13
13
13
13
12
12
12
12
PLATFORM HT.
11
11
11
18
17
16
15
14
13
12
11
10
11
F
F
44
F
F
44
F
F
44
F
F
10
44
10
10
10
10
9
9
9
9
9
8
8
8
8
8
7
F
F
44
7
7
7
7
6
6
6
6
6
5
5
5
5
5
4
4
4
4
4
F
F
46 3/4
F
F
3
49 1/2
3
3
3
3
2
2
2
2
2
1
1
1
1
1
SS-01
SS-02
SS-03
SS-04
LS-01
RH
RW
86
RW RW
RW RW
210 3/4
RW
RW
76
76
16
15
PLATFORM HT.
F
F
RW
RW
60
89 1/4
14
14
13
12
11
10
13
10
PLATFORM HT.
9
PLATFORM HT.
PLATFORM HT.
PLATFORM HT.
9
10
11
12
12
11
10
9
8
F
F
44
10
10
8
7
7
6
9
6
8
8
F
F
44
5
10
5
7
7
F
F
44
4
11
4
6
6
F
F
44
3
12
3
5
5
F
F
2
13
44
2
4
4
1
14
1
3
3
2
2
SC-01
LS-02
1
1
US-01
RW
RW
RW
RW
RW
RW
95 1/4
120
110
RH
RW
RH
RW
76
66
PLATFORM HT.
PLATFORM HT.
PLATFORM HT.
PLATFORM HT.
PLATFORM HT.
10
8
7
9
9
8
7
10
8
7
9
6
6
6
11
10
F
F
44
F
F
44
10
5
5
5
12
11
F
F
44
F
F
44
11
4
4
4
13
12
F
F
F
F
44
44
12
3
3
3
14
13
13
2
2
2
14
15
14
1
1
1
16
SC-020
US-02
US-03
Drawings are not to scale and dimensions shown are not meant to be read. Visit www.cooperstairworks.com to download DXF or PDF drawings.
PREFIT RAIL SYSTEMS
Efficiently combine Cooper Prefit Rail Systems with our preassembled
stairs to simplify your project. Choose from a variety of stock or custom
balustrade styles, as our professional stair builders expertly configure and
prefit the correct parts to ensure a seamless installation. Streamline your
railing needs with our precise and hassle-free solution.
Introducing the game-changing ZIPBOLT™ UT Rail Bolt, now featured on
all Cooper Preassembled Stairs. As a key component of our comprehensive
range of fasteners and connectors designed specifically for the stair
industry (see Cooper Stair Parts brochure), the ZIPBOLT™ UT Rail Bolt
eliminates the hassle of dealing with multiple pieces like nuts, washers, and
specialized wrenches. With its innovative design, the ZIPBOLT™ UT Rail
Bolt securely fastens rail parts together using a standard hex-style driver,
offering unparalleled convenience, speed, and strength.
PREFIT RAIL SYSTEM DETAILS
Post is notched for exact location and height.
Stair is notched for post.
Treads are drilled for balusters, and inserts are installed.
One end of rail is precut for quick field installation with post to post rail systems. Opposite end is cut to fit in field.
Rake rails on stair are drilled for easy baluster insertion, up into rail and down into tread.
EXPERT STAIR DESIGNERS AT YOUR SERVICE
Designing a staircase can be an intricate and overwhelming process, demanding a
delicate balance between aesthetics and functionality. A well designed staircase not
only becomes the centerpiece of a home but it must also be structurally sound and
building code compliant. At Cooper Stairworks, we take great pride in our exceptional
team of skilled stair designers and builders who excel in this challenging endeavor.
HOW TO ORDER
WHEN DO I START?
It’s best to reach out to us to plan your stair during the initial stages of the building design process. By doing
so, you’ll maximize your options and avoid costly framing changes down the line.
1st Floor Stair Plan
2nd Floor Stair Plan
Elevation
Stair Facts Form Available at: cooperstairworks.com
HOW DO I START?
Submit a copy of your plans in the area of the stair at each level and provide the height from floor to
floor. You may request literature or view our website for our offerings to consider your rail and baluster
preferences. Our “Stair Facts” form is available online to guide you through the planning process. We
will send you a quotation for the complete stair system with your choice of balustrade or one we have
recommended to meet your budget.
HOW DO I ORDER?
Simply approve the quotation. We will finalize the details and send a contract for you to sign. A shop drawing
will follow for approval and if you are within reach of our service areas, a field technician will confirm field
dimensions. If you have purchased a curved stair system we provide the curved wall plates, curved floor
templates and a positioning diagram to coordinate the fit of the stair system while framing. This allows you
to complete most of the framing and wall finish prior to taking delivery of the stair and rail system.
WHEN DOES THE STAIR ARRIVE?
Once the job is weather tight, the stair and rail system will be delivered. The stair will be wrapped with
six-mil polyethylene wrap and tread guards will be applied to protect the stair from jobsite traffic. When
ready the protective wrap may be turned back and the rail system unpacked and applied. Complete
installation is available within service areas.
WHY CHOOSE COOPER STAIRWORKS? FEATURES + BENEFITS
1
3
5
2
4
6
1
3
5
FIELD MEASUREMENT In our direct service area all our Tech people field measure the job completely, make recommendations as needed, and work with a Project Manager from beginning to end. CAD SUPPORT Not all stair projects require CAD support, but when necessary we provide very detailed drawings of the project for review. 2
STATE-OF-THE-ART TECHNOLOGY We have invested in the latest technology available. Automatic stair design software is used to support two CNC routers with 4 and 5 axis machining capabilities. TONGUE & GROOVE CONSTRUCTION This superior method of assembly creates a sure fit for the riser to the tread and virtually eliminates squeaks. 4
NOTCHED NEWELS With our prefit rail system, all newels are notched to the proper height to comply with code in conjunction with the rail system. They are dry fitted and marked for location. ZIPBOLT™ UT RAIL BOLT All our rail joint connections are made using the ZIPBOLT™ UT Rail bolt. Easier, Faster, and Stronger. Tighten joints in seconds. 6
Our goal is to make it easy for you every step of the way. Beginning with the basic elements: treads, risers and rail systems,
we will help you determine the best layout for your home. We will take into account all of your design parameters and with
our many years of experience, provide you with a completely coordinated stair and rail system to meet your unique needs,
7
9
11
8
10
12
7
9
11
THREADED INSERTS On wooden, turned, tapered-top balusters, we use a threaded insert in the tread and a machine/lag screw in the baluster for superior strength and ease of installation. FAS-N-FAST A strong machine screw style connector is used to connect all pin bottom newels to the starting step. 8
BLIND FASTENERS When we apply a return to a stair tread, all work is done on the backside so fasteners are never visible on the finish face and edge of the tread. PACKAGING The stair is wrapped in clear plastic with custom water resistant double thick cardboard tread and riser guards applied for protection during construction. 10
PLYWOOD TEMPLATES Plates are provided for framing balcony sections and supporting walls. Stairs are assembled back in our shop using exact duplicates of these templates. EASY INSTALLATION As soon as the project is weather tight, the stair is normally installed in less than half a day so it can be used during the construction process. 12
PREST IGE MONOSTRINGER STAI RS
Introducing Prestige Monostringer Preassembled Stairs, a stunning
addition to the Cooper Stairworks Preassembled Stair line up. These
stairs, created in partnership with Prestige Metal, offer a unique and
sleek design for modern style homes. With their floating steps and
minimalist aesthetic, monostringer stairs are a work of art that seem to
defy physics. They are the ideal choice when space is limited, providing
a compact yet visually striking solution. Crafted with precision and
expertise, Prestige Monostringer Preassembled Stairs combine innovation,
advanced engineering, and high-quality materials to create a durable and
aesthetically pleasing staircase that looks breathtaking from any angle.
OUR SIGNATURE THICK HARDWOOD TREADS
Our signature thick hardwood treads are
skillfully handcrafted in our woodworking shop in
Somerset, MA. These substantial treads harmonize
flawlessly with Prestige’s robust steel stringer,
culminating in a mesmerizing visual experience
of weightlessness. With each step effortlessly
ascending to the next, the finished staircase
exudes architectural excellence.
UNSUPPORTED STAIRS
Unsupported Staircases, also known as
a 'flying' or 'gallery' staircases, shoot up
from the center of an open space and
are unsupported on either side and open
underneath. The unsupported staircase
makes a dramatic impact, both in the room
as a whole and on the person ascending
the stairs. Some designs are difficult to
construct properly from scratch on-site.
The unsupported staircase is just one of
our many specialties.
LET US SAVE YOU A STEP FACTORY PREFINISHING
Enhance the quality and efficiency of your project with the expertise of our skilled professionals in the
prefinishing department. Using our state-of-the-art Fortress coatings systems, they will meticulously
sand and flawlessly apply primer to your stringers, risers, balusters, or newel posts. Enjoy the benefits
of time and cost savings, while reveling in the unmatched beauty that can only be achieved through a
factory-applied spray finish.
5 YEAR WARRANTY
North Atlantic Corp. takes great pride in its workmanship and undertakes to manufacture the very best
preassembled staircase product possible. This commitment to quality allows us to offer a Five Year (5)
Warranty limited to the original contractor/consumer purchaser covering only defects in material or
workmanship. The warranty period shall commence from date of delivery providing all recommendations
are followed as noted in our Use & Care Guide. Natural variations in color and grain of wood shall not be
considered defects. Defects resulting from or attributed to normal wear, abuse, or alteration shall not be
covered. Defects resulting from installation shall be covered only when installation is provided by North
Atlantic Corp and its subsidiaries. Upon written notification of a claim describing a possible defect and
presentation of this certificate we will inspect the staircase within 5 business days. If after such inspection
we determine there to be a defect, we will repair or replace it, unfinished, FREE OF CHARGE.
EXPLORE MORE
Learn about our other stair products from North Atlantic Corp. at cooperstairworks.com
STAIR SELECTION GUIDE
www.cooperstairworks.com | page 1
Cooper Stairworks Stair Parts
House of Forgings Metal Balusters
Fitts Stair Parts
Rintal Spiral Stairs
PHOTO REFERENCE GUIDE
Page 12 Open one side stair,White Oak treads, Primed risers: primed and stringers, primed F5911 balusters, F4910 Sapele Mahogany pin top newels w/6014 Sapele Mahogany over the post rail. Pages 14-15 Custom curved winder/open tread stair w/White stringers + risers, w/Quarter Sawn White Oak treads, custom turned 1-½” round base balusters, custom Sapele Mahogany handrail. Page 16 Custom buttress open riser style stair w/4-¼” thick stringers, Custom 3-1/4” White Oak treads, 6000 White Oak top rail, 2” Square black Powder Coated newels, Cable balustrade system. Pages 20-21 Top: Custom white powder coated mono stringer w/4-1/8” thick Rift + Quarter White Oak treads/Platforms, glass balustrade system capped with 6000 White Oak top rail. Bottom: Custom black powder coated mono stringer w/Red Oak treads w/safety riser, 2” Square black Powder Coated newels, glass balustrade system, 6000 red oak handrail.
Page 22 Straight, unsupported, treads: American cherry, risers: American cherry, stringers: American cherry, rail: 6009 American cherry, posts: custom American cherry newels, balusters: 1/2” square black iron. Page 25 Series of three elliptical stairs starting at the basement level and continuing to the third floor. The 1st to 2nd, and 2nd to 3rd floor stairs were achieved with minimal support and do not have any walls under either stair. Treads: quarter sawn white oak, risers: poplar painted, stringers: buttress style poplar painted, balusters: solid 5/8” stainless steel, newels: 2” stainless steel, rail: custom white oak. Back Cover Custom buttress style curved stairs w/primed stringers, Reclaimed White Oak Plank style treads, Reclaimed White Oak risers, 2” round 6041 handrail. ½” round black iron balusters.
Front Cover Custom unsupported open tread stair w/White stringers + risers, w/Plain Sawn White Oak treads w/plank nosing, 2” Square Satin Black Steel posts, 5/8” Diameter Satin Black Steel balusters, custom White Oak N-3415 handrail. Page 1 Custom curved, open one side, balusters: House of Forgings Harmony Collection Arch, 6088 white oak handrail. Pages 2-3 Custom buttress style U Shaped stairs w/3” thick stringers, Character grade White Oak treads, 6014 Sapele Mahogany Handrail w/custom Volute capping a custom welded steel balustrade system w/Bronze Finish. Page 4 Left: scissor style, treads: red oak, risers: primed, stringers: primed, balusters: Fitts FI5512, FI5515 wrought iron, rail: Fitts 6010 red oak, posts: Fitts 4410 and Fitts 4454 red oak, starting step: 8010 style.
Right: L-shaped stairway with custom starting step, treads: red oak, risers: primed poplar, stringers: primed poplar, balusters: Fitts 5415 fluted primed, rail: 6014 red oak, posts: custom red oak box newels.
Page 5 Flare stair, open one side, treads: recycled heart pine,
risers: primed, stringers: primed, balusters: 5060 primed, rail: 6009 sapele, posts: 4092BD box newel with sapele cap. Pages 6-7 Custom buttress style curved stair w/4-¼” thick stringers, Custom 2-7/8” White Oak treads w/ custom nosing detail, Glass risers, 6008 White Oak top rail, 2” round 6041 secondary handrail. Square brushed square newels, glass balustrade system. Page 8 Custom unsupported Buttress style curved stair w/2-½” Pained stringers + risers, w/Rift + Quarter Sawn White Oak treads, 2” round Brushed Stainless Steel posts, 5/8” Diameter Brushed Stainless Steel balusters, custom Sapele N-3415 handrail.
USE AND CARE GUIDE:
• Staircase must be installed level and square.
• Shim any void between framing and back of stringer (usually wall finish thickness) and screw through stringers into framing at
each stud above and below tread. Where walls are not used to support the staircase adequate substringers must be used.
• Use glue under landing tread and glue nailing cleat behind bottom riser or squeak will result in these areas.
• Apply a minimum two to three top coat paint / finish system within 60 days of delivery to effectively seal wood.
• Staircase should be backpainted or ceiling installed underneath to provide vapor barrier from basement, crawl space, or other
damp areas to prevent squeaks. Likewise shield under side of stair from heat sources such as water heaters, furnaces, etc.
• Do not subject staircase to extremes of temperature or humidity.
• Intense exposure to direct sunlight such as in sunrooms or windows with southern exposure, especially in enclosed areas,
should be avoided.
WWW.COOPERSTAIRWORKS.COM // 508-235-4397
MANUFACTURED BY NORTH ATLANTIC CORP
Learn about our other custom millwork products made in Somerset, MA:
STAIR SELECTION GUIDE
www.cooperstairworks.com | page 1
Cooper Stair Parts cooperstairworks.com
Captiva Custom Wood Doors captivacustom.com
Captiva Custom MDF Doors captivacustom.com
Captiva Custom Mouldings captivacustom.com
7/2023
Page 1 Page 2 Page 3 Page 4 Page 5 Page 6 Page 7 Page 8 Page 9 Page 10 Page 11 Page 12 Page 13 Page 14 Page 15 Page 16 Page 17 Page 18 Page 19 Page 20 Page 21 Page 22 Page 23 Page 24 Page 25 Page 26 Page 27 Page 28Powered by FlippingBook