Best Barns New Castle Safety guide

New Castle Building Size 12'x16'
Revised September 28, 2022
Assembly Book
Best Barns USA
This manual is copyrighted. Under the copyright laws, this manual
may not be copied, in whole or in part, without consent from
RBS Holdings, LLC © Copyright 2022
Manufactured by RBS Holdings, LLC
205 Arlington Drive Greenville, PA 16125

Tongue Edge
LAP Edge
Tool List
Hammer & Phillips Screwdriver
Framing Square & Level
Hand or Circular Saw
Power Drill/Screwdriver
Measuring Tape
2 - 8' Step Ladders
Always wear safety glasses when cutting or nailing!
The siding is made in 4x8 sheets with grooves
cut into the face, the long edge is beveled so
that the siding overlays where they butt.
To identify which edge we want you to use,
we will refer to the edge as either the 'LAP'
Edge or the Tongue Edge. Nail siding with
6d galvanized box nails spaced 8" apart.
IMPORTANT INFORMATION ABOUT YOUR SHED KIT
Thank you for purchasing our shed kit. Read the instructions before starting the assembly of the
building. If you have any questions about assembling the kit, call 800-245-1577. Business hours
(8:00-5:00 ET) Monday thru Friday. After business hours call 724-866-HELP (4357).
The foundation size should measure 12'-0" wide by 15'-9" long. Do Not make the foundation
larger than the building size. The siding should project beyond the foundation for water to expel
properly from the sidewalls.
The material that is included in our kit is listed on the back page. The optional floor package,
if purchased, will be supplied by a local lumber supplier. Our kit does not include the shingles,
the quantity needed is listed on the back page. The siding is primed. You will need to apply a
finish coat using latex acrylic paint.
Most buildings are installed on a wood floor and the siding was designed to extend over the wood
flooring. If the foundation is a concrete floor cut the siding flush with the bottom of the wall
plate to prevent the concrete from contacting the siding.
Stacking the boards, according to size, will make them easier to find when needed. Some boards
may have colored ends. Do Not discard any material until your building is complete.
Before you begin construction, be sure to study this assembly manual. Also, obtain a building
permit and check all pertinent building code regulations.

1. Cut (2) two 2x4-8' boards into 2' long blocks. Butt the 4x4-8' timbers together to make 16'
runners. Secure the 4x4s together with the 2' long 2x4 blocks and 16d galvanized nails.
Nail 2x4 joist headers and
floor joist to 4x4 runners.
XX
XX
X
X
2x4 Joist Header X
X
16"
16"
15-1/4"
Material Description Qty. & Size
2x4 Treated Blocking
2x4 Treated Floor Joists
2x4 Treated Joist Headers
4x4 Treated Runners
Flooring: 5/8" or 3/4"
Galv. Spiral Floor Nails
Galvanized Deck Nails
2 pcs. 8'
13 pcs. 12'
2 pcs. 16'
8 pcs. 8'
6 pcs. 4x8
3 lbs. 8d
3 lbs. 16d
::::::::::::
:
::
:
::
:
DOOR WALL
It is important that the floor be level and square. Square the floor as follows: before nailing the
flooring, measure the floor diagonally (corner to corner). Then measure the opposite corners;
these measurements will be the same when the floor is square. Toenail frame to the 4x4 runners.
Install the flooring with 8d galvanized nails spaced 8" apart.
3. Cut 2x4-12' floor joist to 11'-9". Treated lumber may be thicker than 1-1/2". Take this into
account when cutting the length of floor joists. Shorten joist measurements if necessary to
obtain 12'-0" building width.
2. Cut (2) two 2x4 joist headers to 15' - 9". Layout for 16" on center joist spacing. 'X' marks
where floor joist will be placed.
Foundation size is 12'-0" x 15'-9". Check local building codes in your area, the construction may
have to change. For a concrete slab, install sill sealer as a moisture barrier between the concrete
and the wall plates. Foam sill sealer can be purchased at home centers in rolls 3-1/2" or wider.
Constructing Details for Deluxe Floor System
Deluxe floors include 4x4 runners
2x4 Floor Joist
spaced 16" o.c.
2x4 Joist Header
4x4 Treated Runners
Flooring
Outside Measurement
15' - 9" Floor Length
12' - 0" Wide
2x4 Blocking

6. Repeat to assemble another side wall.
A
A
B
B
XX
XX
X
X
2. Install (8) eight 72" wall studs between the top and bottom plates. Assemble wall frames with
10d sinkers, (2) two nails at each stud end. Nail both wall frames together with (4) four 10d
sinkers (stagger nails on each side of the studs).
3. Square wall frame. Measure diagonally (corner to corner). The measurements will be the same
when the wall is square.
4.
Install the 1st siding panel with the 'LAP' edge extending 3-1/2" past the wall frame. The bottom
will extend 3/4" below the bottom plate.
Tip; use a 1x4 trim board as a gauge. Use 6d galv. nails
spaced 8" apart.
5. Install (2) two more siding panels. Cut the last panel to extend 3-1/2" beyond the wall frame.
X
X
X
X
X
X
68-1/2" Wall Plate
2x4-72" Wall Studs
Step 1 Assemble 12' Side Walls
1. Gather (4) four 2x4-68-1/2" boards an position together then indicate with 'X' marks, where
the wall studs will be located. Mark the ends that will butt together with the letters 'A' and 'B'.
68-1/2" Wall Plate
24"
19-3/4" 24"
23-1/4"
68-1/2" Wall Plate
AB
Siding to extend 3/4”
below bottom plate
LAP
Edge
A
B
Siding Extends 3-1/2"
Past 2x4 Stud
Do not discard any material until construction is complete. Including short blocks of 2x4s.

XX
XX
X
X
X
X
72" Wall Plate
X
X
A
A
B
B
X
X
Step 2 Assemble Back Wall
2. Install (8) eight 72" wall studs between the top and bottom plates. Nail both wall frames
together with (4) four 10d sinkers (stagger nails on each side of the studs).
3. Square wall frame.
4. Install the first siding panel with the 'LAP edge' flush the end of the wall and extending 3/4"
below the bottom plate.
5. Install (2) two more siding panels.
Siding Extends 3/4" Below Plate
LAP Edge
1. Gather (4) four 2x4-72" boards and position together then indicate with 'X' marks, where the
wall studs will be located. Mark the ends that will butt together with the letters A' and 'B'.
72" Wall Plate
24"
23-1/4" 24"
23-1/4"
72" Wall Plate
72" Bottom Plate
LAP
AB
Flush

3. Select the 12' back wall assembled in Step 2. Butt the 45" wall frame against the wall with
siding. DO NOT nail these frames together so they can be separated later.
4. Install a siding panel on the 45" frame. Cut panel flush with the end of the wall frame. DO NOT
nail along the long edge of siding that overlaps the 12' wall frame. You can nail this edge after
the wall panels are installed. Two separate walls are easier to handle when erecting kit.
1. Locate (2) two 45" long 2x4s and (3) three 2x4-72" wall studs.
2. Install (2) two 2x4-72" wall studs between wall plates at each end. Install (1) one stud in the
center of the wall frame.
Do Not Nail Along This Edge
12' Wall Panel from Step 2
45" Wall Panel
Step 3 Assemble Back Wall Continued
45" Wall Plate
Siding Extending 3/4"
Below Plate
72" Wall Stud

4. Gather (2) two 2x4-45" and (10) ten 2x4-72" boards. Cut (2) two 2x4-72" to a length of 62".
5. Position the 62" and 45" boards together and indicate with 'X' marks where the wall studs will
be located. Mark the ends that will butt together with the letters 'A' and 'B'.
71-1/2"
Header Support
6. Cut a 72" long 2x4 to a length of 71-1/2" and install on the wall frame flush with bottom plate.
A
A
B
B
XX
XX
X
X
X
X
X
X
Step 4 Assemble Front Wall Frames
1. Locate (2) two 2x4-72" boards. Cut (1) one 14-1/2" plate from each board.
Save the 57-1/2" long cutoffs, they will be used in a later step.
2. Assemble a wall frame using (2) two 2x4-72" boards an the (2) two 14-1/2"
wall plates cut above.
3. Locate (1) one 2x4-72" board. Cut board to a length of 71-1/2". Install as a
header support on the wall frame flush with bottom plate. Nail using (4) four
10d sinkers (stagger nails on each side).
2x4-14-1/2" Wall Plate
2x4-45" Plate
2x4-62" Plate
2x4-71-1/2" Header Support
72" Studs
62" Wall Plate
24"
13" 20"
45" Wall Plate

2. Install a 16" wide siding panel with a tongue edge. The 'cut' edge should be flush with the side
of the door opening.
3. Install (2) two more siding panels. Cut the last siding panel flush with the end of the wall frame.
If installing the optional window you can cut the opening in
the siding. Instructions are packed in window box.
If you want the door opening on the right, flip the walls and apply siding
to the opposite side of the wall frames.
Step 5 Install Siding on Front Wall Frames
1. Install a 16" wide siding panel with a
LAP edge. LAP edge and 'cut' edge
should be flush with frame.
LAP Edge
71-1/2" Header
Support
71-1/2" Header
Support
Cut Edge Flush
Cut Edge Flush
Tongue Edge
Siding Extends 3/4" Below Plate
Siding Extends 3/4" Below Plate

6. Secure the 2x4 bottom plate to the truss rafter with
a 2-1/2" wood screw on both ends. Set gable aside.
7. Repeat steps 3-6 to assemble another gable.
72" long 2x4
3/4" Plywood Gusset
2. Repeat to assemble another
12' long bottom plate.
3. Place the bottom gable plate on the floor along with (2) two 80-1/2" long 2x4 truss rafters as
shown below. Bottom plate will be on edge.
4. Secure the top of the truss rafters together with a 1"x4" barbed metal drive-on plate.
5. Install (2) two 23-1/2" gable studs with angle cut at one end. Nail through the bottom plate
with 10d sinkers and secure the top with barbed metal drive-on plates.
Step 6 Assemble Roof Gables
1. Butt (2) two 72" long 2x4s together and secure them with a 3-1/2" x 31-3/4" long plywood
gusset across the top where they butt together. Use apply glue with a brush and (12) twelve
6d common nails. This will be used as the bottom plate on the roof gables.
23-1/2" Gable Stud
Bottom Gable Plate
Barbed Metal Plate
80-1/2" long 2x4
Truss Rafter
2x4 Block
2x4 Block

6. Remove and save the short 2x4 blocks. They
will be used in a later step.
Detail 'B'
Step 7 Assemble Roof Trusses
1. Place (2) two 80-1/2" long 2x4 truss rafters and a 82" long collar tie together as shown below.
The collar tie has an angle cut on both ends. Reposition the lower 2x4 blocks to hold the truss
rafters in place. See 'Detail B'.
2. Secure the 2x4 truss rafters at the top with a 8" x 16" wood gusset. Apply wood glue between
the 2x4s and the gusset. Nail the gusset to the 2x4s with (14) fourteen 6d common nails,
3. Secure the 2x4 collar tie with (4) four 3" long wood screws at each end. Tip: Pre-drill holes
with an 1/8" bit to prevent wood splitting at ends.
4. Turn this truss over and apply a wood gusset to the opposite side at the ridge.
5. Repeat to assemble (6) six more trusses.
Ridge Gusset
2x4-82" Collar Tie
!Install collar tie the same
distance from bottom end of
rafters.
80-1/2" Truss Rafter
2x4 Block
2x4 Block
2x4 Block
80-1/2" Truss Rafter
!
Collar Tie Flush
with Rafter

7. Install (2) two 4-1/4" siding panels over
the door header. The siding should extend
3/4" below the door header. Cut length to
fit.Wall trim, installed later, will hide where
the siding butts the front wall panels.
Step 8 Set Walls & Install Door Header
2. Erect wall panels. IMPORTANT make sure walls are plumb and square. Secure together
at the corners using (4) four 10d sinkers per corner
3. Nail siding on 45" wall panel to 12' wall panel. Nail along siding edge where it overlaps front
and back walls at corners.
4. Install the 2x4 door header between the front wall panels. Nail through the wall studs into the
ends of the header. Toenail into the top wall plates.
5. Temporarily install (2) two 2x4-72" boards at both sides of the door opening to hold the wall
straight. These boards will be used later for tie plates.
6. Nail wall panels to the floor through the bottom plate. Use 10d sinkers or, if erecting on a
concrete slab, concrete anchor (not included) spaced 24" apart.
2x4 Door Header
45" Wall Panel
Left Sidewall
67-1/2" Long 2x4
OSB Filler
2x4-72" Wall Brace
Cut 4-1/4" x 48" Siding
Panels to Fit
Nail siding
Nail siding
1. Gather (2) two 67-1/2" long 2x4 boards and
a 3-1/4" x 67-1/4" OSB filler panel. Glue both
sides of OSB with a brush. Nail header
together from both sides with 10d sinkers
staggered 6" apart.
3/4" Below
Bottom of Header

4. Install another 46-3/4" long trim
board next. Cut to fit the last 46-
3/4" long trim board.
5. Install trim on the opposite side
wall and corner trim on front and
back walls.
2. Install a 75-3/4" long 1x4 trim board to the front wall flush with wall plate
and with 1x3 trim.
1x3 Trim 1x4 Trim
5. Repeat to install filler on
the opposite wall.
Soffit and Filler Flush
with Side Wall Trim
Tip; Paint the siding and trim boards before installing the trim.
Step 9 Install Trim
Front
Wall
1x4-46-3/4" Trim
Side Wall
Install All Trim Flush
With Top Plate
1. Install (2) two 75-3/4" long 1x3 corner trim boards to the side wall flush with the top 2x4 wall
plate and flush with siding on the front and back walls. Use 6d galv. nails, spaced 12" apart.
3. Gather (3) three 1x4-46-3/4" trim
boards. Butt (1) one trim board
against 1x3 corner trim and flush
with top plate. Nail along top with
6d galv. nails.
Step 10 Install Primed Soffit and Filler
1. Install a 7" wide x 48-3/4" long primed siding panel, as soffit, over the front wall with the
primed side facing down. Install soffit flush with the inside of the top 2x4 wall plate and
flush with the trim on the side wall. Tack the soffit with a couple 6d common nails. Installing
2x4 tie plates in a later step will provide more nailing.
2. Install (3) three more soffit panels cutting the last panel flush with the side wall trim.
Front
Wall
Side Wall
Soffit Flush with
Inside of 2x4
3. Repeat to install 7" soffit
boards on the back wall.
4. Install (3) three 4-1/4" wide
x 48-3/4" filler panls over
the side walls. Install the
filler flush with the 1x4 trim.
Cut last filler to fit.
7" Soffit
4-1/4" Filler

Step 12 Install Gables
Important: Bottom edge of siding extends
over 1x4 trim. Paint this edge.
2. Install gable on the opposite side wall.
Step 11 Install Siding on Gables
1. Select one of the gable frames. Turn the gable over so bottom plate is on edge on floor. Support
gable studs and rafters with (2) two 2x4-72" boards stacked. This will give you a solid surface
when nailing siding.
2. Install left gable siding panel with the 'LAP' edge flush with the end of of bottom plate. Siding
should extend 3/4" below bottom plate. Siding should not extend above top of frame.
3. Install center and right panels. Cut last panel flush with end of bottom plate.
LAP
Edge
Siding Extends 3/4"
Below Bottom Plate
4. Repeat to install siding on
the other gable frame.
LAP Edge
Flush
1. Install a gable on the left side wall. The gable siding will extend over the 1x4 trim on the
lower wall. Secure gable to wall by nailing through the gable plate with 10d sinkers spaced
16" apart. Nail siding along the 1x4 trim board with 6d galv. nails.
2x4s-72" Stacked to
Level Gable

Step 13 Install 2x4 Tie Plates & Door Trim
Cut 57-1/2" long
2x4 to fit
5. Install 1x3-72" trim boards along each side of the door opening, flush with the bottom edge
of the siding. Tack these boards with a couple nails; you may want to move the trim later
when you install the doors. Use 6d galv. nails.
6. Install a 1x3-72" trim board centered across the top of the side trim.
2x4-72"
Tie Plate
2x4-6' Tie Plate
1. Remove 2x4s used for bracing door opening. Install
these boards on the front wall starting at the front
right corner. Boards should be flush with the inside
of the 2x4 top plates and soffit. Use 10d sinkers
spaced 16" apart.
2. Cut to fit a 57-1/2" long 2x4 (from Step 4) to
finish.
3. Install (2) two 2x4-72" boards starting at the back
left corner.
4. Cut to fit a 57-1/2" long 2x4 (from Step 4) to
finish.
1x3-6' Trim

Inside of Building
Detail 'D'
2x4 Tie Plate
Step 14 Layout Roof Trusses
24"
21-3/8"
Measure from
Backside of 2x4
1. Layout the truss spacing from the left side wall of the building. Measure from the backside
of the 2x4 gable frame when marking the location of the first truss. Continue 24" spacing
to other gable. Important: When marking the opposite wall, place the 'X' mark on the same
side of the line so your trusses are parallel when they are installed.
2. Install metal hangers to the tie plate with hanger nails. The opening should line up with the
'X' mark, the bottom of the opening, flush with the 2x4 tie plate. Detail 'D'.

Step 15 Set Roof Trusses and Soffit Blocks
2x4 Blocks
1. Set roof trusses. Secure trusses to metal hangers with hanger nails.
2. Install short 2x4 blocks at both ends of each truss. Secure 2x4 blocks to the soffit panel
using (2) two 1-1/2" long exterior screws.
3. Install a 2x4 block at each end of the soffit, flush with the 2x4 gable frame. Not siding.
Step 16 Install Siding Filler
Install small primed siding fillers, packed with the hardware,
over the 2x4 soffit blocks. Siding fillers will be flush with
the gable siding. Use 6d galv. nails.
Siding Filler
Block Flush with Gable 2x4

24" x 48"
48" x 48"
2. Install 1x4-6' fascia in the center of the building.
3. Cut to fit and install a 1x4-4' fascia at the right end of the building.
1. Starting at the front left of the building, install a 1x4-6' fascia board flush with the face of
the siding on the left gable. See Detail 'E'. Install the fascia so the bottom edge of the roof
sheathing will rest on the edge of the 1x4. Use a straight edge to align the 1x4 boards with
the top of the trusses. Install fascia with 6d galv. nails.
Step 17 Install 1x4 Fascia & Roof Sheathing
1x4 -6' Fascia Board
4. Install roof sheathing per layout below. Sheathing should be flush with gable siding. Make
sure the trusses are plumb and the roof sheathing meet at the center of the truss. Use 6d common
nails spaced 12" apart. The top row of roof sheathing will be about 1" below the ridge to allow
for optional ventilation.
5. Repeat on back of building to install fascia and roof sheathing.
36-1/2" x
48"
1x4 Fascia
2x4 Truss
Roof Sheathing
1" Below Top
Straight Edge
2x4 Tie Plate
2x4 Soffit Block
Nail Fascia to
2x4 Block
Detail 'E'
36-1/2" x
48"
36-1/2" x
48"
36-1/2" x
48"
24" x 48"
48" x 48" 48" x 48"

Air
Space
Truss
Shingles
Felt
Paper
1x4 Fascia
1x4 Gable Trim
Step 18 Install Gable Trim
1x4 Gable Trim
2. Install shingles according to the instructions on the wrapper. If you need more
detailed instructions on installing shingles, there are good publications online.
Building Tip: Install ridge vent in lieu of shingles caps. Ridge vent provides ideal
ventilation, preventing heat and moisture from damaging your building or its contents.
Optional ridge vent provides
ideal ventilation.
Step 19 Install Roofing — Not Supplied in Kit
1. Install metal roof edging on the
perimeter of the roof area. If you are
not installing shingles at this time, you
can purchase felt paper to protect the
roof sheathing. Install the felt paper
before you install the metal roof edge.
1. Install a 8-1/2" long trim board, called a keystone,
at the top of the gable flush with the top of the
roof sheathing. Use 6d galv. nails.
2. Install (2) two 81" long 1x4 trim boards
flush with the top of the roof sheathing.
Use 6d galv. nails.
3. Repeat to install trim on other gable end.

Step 20 Install Doors & Hardware
4. Before fastening the hinges to the side trim,
temporarily prop the doors in the opening. Leave
a space at the top and bottom of the doors and
between the doors and the side trim to allow
room for the doors to expand due to humidity.
If your door opening is out of square, the space
around the doors will not be even. You can
remove and re-position the side trim to make
allowances for this. The side trim does not have
to be flush with the frame of the door opening.
You can move the trim in or out to make the
door spacing equal.
5. Determine position of hinges and install to side
trim with 2" screws.
6. Installdoorhaspon doubledoors.Whenproperly
installed the hasp will fold in half to receive
locking latch and the screw heads will be
covered.
7. Install a barrel bolt on the lower back of the door
to secure this door in place when closed. You
will need to drill a hole for the round shaft to
drop into.
8. Install another barrel bolt at the top of the door.
Barrel Bolt on the
back of left door
Left Door
Siding Extends Past Trim Fold Hasp to Cover
Screws
1. Lay the left door with the trim facing up. The
siding on the left door extends past the door trim.
See detail below.
2. Install 5" hinges to the left side of the door frame.
To position the hinge properly, hold the rectangular
plate against the frame. Use 1-1/4" black screws.
3. Install hinges to the right side of the other door.

Material List
Roof Covering - not supplied in kit
9 bdl. Roof Shingles
8 pcs. Roof 'drip' Edge 10'
3 1 lb. box 10d Sinkers
5 1 lb. box 6d Galv.
2 1 lb. box Hanger Nails
3 1 lb. box 6d Common
6 ea. 5" Door Hinges
1 ea. 4" Door Latch
2 ea. 6" Barrel Bolts
25 ea. 2" Hinge Screws
25 ea. 1-1/4" Hinge Screws
40 ea. 1-1/2" Exterior Screws
25 ea. 2-1/2" Deck Screws
58 ea. 3" Deck Screws
16 ea. 3/4" Pan Head Screws
6 ea. 1"x4" Metal Plates
1 ea. Bottle Glue
4 ea. 1x4 Gable Trim 81"
4 ea. 1x4 Fascia Trim 72"
2 ea. 1x4 Fascia Trim 48"
4 ea. 1x4 Corner Trim 75-3/4"
4 ea. 1x3 Corner Trim 75-3/4"
6 ea. 1x4 Wall Trim 46-3/4"
3 ea. 1x3 Door Trim 72"
2 ea. 1x6 Keystone 8-1/2"
Roof Sheathing & Door Filler
6 ea. Sheathing 7/16" 48" x 48"
4 ea. Sheathing 7/16" 24" x 48"
8 ea. Sheathing 7/16" 36-1/2" x 48"
1 ea. Dr Filler 7/16" 3-1/4" x 67"
7 2x4 for Collar Ties 82"
18 2x4 for Truss Rafters 80-1/2"
54 2x4 for Wall Studs & Plates 72"
8 2x4 for Wall Plates 68-1/2"
2 2x4 for Door Header 67-1/2"
4 2x4 for Wall Plates 45"
4 2x4 for Gable Studs 23-1/2"
18 2x4 for Soffit Blocks 6" to 8"
14 Truss Gussets 7/16" 8" x 16"
2 Plywood Gusset 3/4" 3-1/2" x 32"
14 2"x4" Metal Truss Hangers
2 ea Pre-built Doors 32" x 71-3/4"
LP Primed Exterior Siding
12 ea Siding Panels 48" x 75-3/4"
2 ea Siding Panels 16" x 75-3/4"
2 ea Gable Siding 48" x 40" angle cut
4 ea Gable Siding 48" x 28" angle cut
8 ea Soffit Panels 48" x 7"
6 ea Filler Panels 48" x 4-1/4"
2 ea Siding Panels 48" x 4-1/4"
Packed in hardware bag
4 ea Siding Fillers 3-1/2" x 2-1/2"