Best Barns USA
Assembly Book
Revised November 1, 2018
the Mansfield - R
Manufactured by Reynolds Building Systems, Inc.
205 Arlington Drive Greenville, PA 16125 724-646-3775
This manual is copyrighted. Under the copyright laws, this manual
may not be copied, in whole or in part, without consent from Reynolds
Building Systems, Inc. © Copyright 2018
12' x 12'
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,
(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 12' long The siding should project beyond
the foundation for water to expel properly from the side walls.
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 and trim 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. 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.
call 800-245-1577. Business hours
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
8d galvanized box nails spaced 8" apart.
Tool List
Hammer & Phillips Screwdriver
Framing Square & Level
Hand or Circular Saw
Always wear safety glasses when cutting or nailing!
LAP Edge
Tongue Edge
Power Drill/Screwdriver
Measuring Tape
2 - 8' Step Ladders
Constructing Details for Deluxe Floor System
Shown below is a typical wood floor. Depending on your area, the construction may have to be
changed to meet local codes. When using a concrete slab, use the same overall foundation
measurements. Install foam 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.
1. Cut (2) two 2x4-12' joist headers to a length of 12 '- 0". Layout for 16" on center spacing.
'X' marks where floor joist will be placed.
2x4 Joist Header
X
X
X
X
16"15-1/4"
X
X
16"
X
X
2. 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.
12' - 0" Floor Length
idth
12' - 0" Building W
DOOR WALL
4x8 Flooring
4x4 Treated Runners
2x4 Joist 11' - 9" Long
Material Description 12' x 12' shed
2x4 Joist Headers 2 pcs. 12'
2x4 Floor Joist 10 pcs. 12'
4x4 Treated Runners 4 pcs. 12'
Flooring 5/8" or 3/4" 5 pcs. 4x8
Screw Floor Nails 2 lbs. 8d
Galv. Box Nails 1 lb. 16d
To keep 2x4 frame from
moving, toe nail to 4x4.
It is important that the floor be level and square.
Before nailing the flooring, measure the floor
diagonally (corner to corner). Then measure the
opposite corners. These measurements will be
the same if the floor is square.
Step 1 Assemble 12' Back Wall
Do not discard any material until construction is complete. Including short blocks of 2x4s.
1. Position 2x4-68-1/2" 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'.
68-1/2" Wall Plate
X
X
19-3/4"
68-1/2" Wall Plate
2x4-72" Wall Studs
X
X
X
X
24"
B
A
B
A
23-1/4"
2. Install (8) eight 72" wall studs between the top and bottom plates. Usd 10d sinkers, (2) two
nails at each stud end. Nail both wall frames together with 10d sinkers.
68-1/2" Wall Plate
X
X
24"
B
A
X
X
X
X
3. Square wall frame. Measure diagonally (corner to corner). The measurements will be the same
when the wall is square.
4. Install the first siding panel with the 'LAP' edge extending 3-1/2" past the wall frame and 3/4"
below bottom plate. Use 8d galv. nails spaced 8" apart. Tip: Use 3/4" trim board as a gauge.
5. Install (2) two more siding panels. Cut the last panel to extend 3-1/2" beyond the wall frame.
LAP
Edge
B
A
Siding to extend 3/4”
Siding Extends 3-1/2"
Past 2x4 Stud
below bottom plate
Step 2 Assemble 12' Long Sidewalls
1. Gather (4) four 2x4-72" boards and position together then indicate with 'X' mark where the
wall studs will be located. Mark the ends that will butt together with 'the letters A' and 'B'.
72" Wall Plate
A
X
X
23-1/4"
72" Wall Plate
X
X
X
X
24"
B
A
B
23-1/4"
A
72" Bottom Plate
2. Install (8) eight 72" wall studs between the top and bottom plates. Nail both wall frames
together. Use 10d sinkers.
3. Square wall frame.
4. Install the first siding panel with the 'LAP' edge flush with the end of the wall and extending
3/4" below the bottom plate.
5. Install (2) two more siding panels.
72" Wall Plate
X
X
B
24"
X
X
X
X
LAP
Flush
6. Repeat to assemble another sidewall.
LAP Edge
Siding Extends 3/4" Below Plate
Step 3 Assemble Door Wall - Offset Doors
To position the door opening in the center of the wall, go to Step 4. To position
the door opening on the right side of the front wall, flip the walls and apply
siding to the opposite side of the wall frames.
1. Cut (2) two 11" plates from a 34-3/4" long
2x4. Install (2) two 72" wall studs between the
11" long 2x4 wall plates.
2. Position (2) two 58-1/2" long 2x4s together
and indicate with 'X' marks where the wall
studs will be located.
58-1/2" Wall Plate
X
X
X
X
X
X
X
X
24"
71-1/2" Header Supports
19-3/4"
3. Install (4) four 72" wall studs between (2) two 58-1/2" long 2x4 wall plates
4. Gather (2) two 2x4-72" 2x4s. Cut each board to 71-1/2" and install as a header support on each
wall frame flush with bottom plate. Use 10d sinkers.
LAP Edge Extends 3-1/2"
5. Select a 16" wide siding panel with a
'LAP' edge. Install
cut edge flush with
header support. The 'LAP' edge will
extend 3-1/2" beyond the wall frame.
Cut Edge Flush
71-1/2" Header
Support
Bottom edge will be 3/4" below the
bottom plate.
If installing the optional window you
can cut the opening in the siding.
Instructions are packed in window box.
6. Install a 16" siding panel with a
tongue edge.
Cut edge will be flush
with the header support.
71-1/2" Header Support
7. Install the last siding panel. The siding will
extend 3-1/2" past the wall frame.
Siding Extends
3/4" Below Plate
Step 4 Assemble Door Wall - Doors Centered
1. Locate (2) two 34-3/4" long 2x4s and position them together.
Indicate with 'X' marks where studs will be located..
34-3/4" Wall Plate
X
X
19-3/4"
X
X
X
X
Make (2) Two Frames
2. Install (3) three 72" wall studs between the 34-3/4" wall plates.
3. Locate (1) one 2x4-72" and cut to 71-1/2". Install as a header
support on right side as shown and flush with bottom plate. Use
10d sinkers.
4. Locate (2)
two 58-1/2" 2x4s and cut (1) one 34-3/4" plates from
each. Repeat steps 2 and 3 to assemble another wall frame.
71-1/2" Header
Support
5. Select one frame and position so header support is on right.
6. Locate a 16" wide siding panel with a 'LAP' edge. Install this panel with the
cut edge flush
with the 2x4 header support. Bottom edge should be 3/4" below bottom plate. Only nail along
cut edge until next panel is installed.
7. Cut a 48-3/4" wide siding panel in half lengthways.
8. Select cut panel with the 'Tongue' edge. Install this panel so cut edge extends 3-1/2" beyond
the end of the frame and tongue edge under the 16" panel. The siding should extend 3/4' below
the bottom plate. Nail both siding panels to frame.
Cut Edge Extends
Beyond Frame
Tongue
Edge
LAP Edge
Cut Edge Extends
Beyond Frame
Cut Edge Flush
71-1/2" Header Support
Left Side Wall Panel
Right Side Wall Panel
7. Locate a 16" wide siding panel with a 'Tongue' edge and the remaining 24" wide cut panel.
Install these on remaining frame. Make sure header support is oriented to the left.
Step 5 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 glue and (12) twelve 6d common nails.
This will be used as the bottom plate on the roof gables.
2. Repeat to assemble another
12' long bottom plate.
72" long 2x4
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. There are short 2x4s, that may have an angle on
one end, supplied in the kit. Use these to hold the truss rafter and bottom gable plate together
by temporarily screwing the blocks to the floor using 2-1/2" screws. This will ensure that the
gable frames and the trusses, assembled next, are identical.
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.
Barbed Metal Plate
3/4" Plywood Gusset
80-1/2" long 2x4
Truss Rafter
2x4 Block
Bottom Gable Plate
23-1/2" Gable Stud
2x4 Block
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.
Step 6 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
rafter and collar tie in place. See 'Detail B'.
2. Secure the 2x4 truss rafters at the top with a 8" x 20" wood gusset. Apply wood glue between
the 2x4s and the gusset. Nail the gusset to the 2x4s with (14) fourteen 6d common nails,
3. Install (2) two 12"x24" gussets at ends of the collar tie. Glue and nail using 14 nails per gusset.
4. Turn this truss over and apply wood gussets to the opposite side.
5. Repeat to assemble (4) four more trusses.
80-1/2" Truss Rafter
Top Gusset
!
!
80-1/2" Truss Rafter
12"x24" Gusset
!
2x4 Block
2x4-82" Collar Tie
Install collar tie the same
distance from edge of floor.
Detail 'B'
2x4 Block
2x4 Block
6. Remove and save the short 2x4 blocks. They
will be used in a later step.
2x4 Block
Step 7 Set Walls
67-1/2" Long 2x4
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. Nail header together from both
sides with 10d sinkers staggered 6" apart.
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 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 stud into the
ends of the header. Toenail into the top wall plates.
5. Remove the center (2) two 2x4-84" boards from pallet and temporarily install at both sides of
the door opening to hold the wall straight. Alternatively you can use 2x4-72" boards that will
be used later for tie plates.
6. Nail all wall panels to the floor through the bottom plate. Space 10d sinkers 24" apart.
OSB Filler
2x4 Door Header
Nail siding
Drawing shows a building
with the doors offset.
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 siding.
Cut 4-1/4" x 48" Siding
Panels to Fit
3/4" Below
Bottom of Header
Step 8 Install White Pine Trim
Tip; Paint the siding and trim boards before installing the trim.
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 8d galv. nails, spaced 12" apart.
2. Install a 75-3/4" long 1x4 trim board to the front wall flush with wall plate
and with 1x3 trim.
3. Butt a 1x4-6' board against
1x3 corner trim and flush with
Install All Trim Flush
With Top Plate
top plate. Nail along top with
8d galv. nails.
1x4-6' Trim
4. Cut a second 1x4-6' trim board
to finish at opposite corner.
5. Install trim on the opposite
side wall and corner trim on
front and back walls.
Side Wall
1x3 Trim
Front
Wall
1x4 Trim
Step 9 Install Primed Soffit and Filler
1. Locate (1) one 7" wide x 48-3/4" long siding panel and cut in half. Install one half over the
front wall with the primed side facing down. Cut edges should be 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.
3. Repeat to install 7" soffit
boards on the back wall.
4. Install (3) three 4-1/4" wide
x 48-3/4" filler panels over
the side walls. Install the
flush with the 1x4 trim.
filler
Cut last filler to fit
Soffit Flush with
Inside of 2x4
7" Soffit
4-1/4" Filler
Soffit and Filler Flush
with Side Wall Trim
5. Repeat to install filler on
the opposite wall.
Front
Wall
Side Wall
Step 10 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. Use
6d galv. nails across the top of the 2x4 frame and gable studs. Use 8d galv. nails across the
bottom plate. The siding will extend 3/4" below the bottom 2x4.
3. Install center and right panels. Cut last panel flush with end of bottom plate.
4. Repeat to install siding on
the other gable frame.
LAP
Edge
2x4s-72" Stacked to
Level Gable
LAP Edge
Flush
Siding Extends 3/4"
Below Bottom Plate
Step 11 Install Gables
1. Install a gable on the left sidewall. 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. Nail
siding along the 1x4 trim board with 8d galv. nails.
2. Install gable on the opposite sidewall.
Important: Bottom edge of siding extends
over 1x4 trim. Paint this edge.
Step 12 Install 2x4 Tie Plates and Door Trim
1. Cut a 2x4-72" in half and install one 3' piece over the front wall, against the
gable plate and flush with the inside of soffit. Use 10d sinkers.
Install
Soffit Boards
2. If used for a wall brace, remove a 72" long 2x4
and install this next to the 3' long 2x4. Cut a 3'
piece to fit against opposite gable.
3. Repeat to install tie plates on the back wall.
Flush
Front Wall
2x4-72" Tie Plate
1x3-72"
Door Trim
4. Install (2) two 1x3x72" 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 8d galv. nails.
5. Install a 1x3x72" board across the top of the side trim.
Step 13 Layout Roof Trusses
1. Layout the truss spacing from the left sidewall 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 6d common nails . The opening should line up
with the 'X' mark, the bottom of the opening, flush with the 2x4 tie plate. Detail 'D'.
Measure From
Backside of 2x4
20-5/8"
Detail 'D'
2x4 Tie Plate
Inside of Building
24"
Step 14 Set Roof Trusses and Soffit Blocks
1. Set roof trusses. Secure trusses to metal hangers with 6d common nails.
2. Install short 2x4 blocks in
front 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
he 2x4 gable frame.
4 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
Step 15 Install Gable Trim
1. Install a 8-1/2" long trim board, called a keystone,
at the top of the gable flush with the top of the
gable frame. Use 8d galv. nails.
2. Install a 81" long 1x4 trim boards at flush
with the top of the gable frame.
Use 8d galv. nails.
3. Repeat on opposite gable.
Step 16 Install 1x4 Fascia and Roof Sheathing
1. Starting at the front left of the building, install 1x4-6' white pine fascia board against the left
gable trim. Install the fascia so the bottom edge of the roof sheathing will rest on the edge of
the 1x4. See Detail 'E'. Use a straight edge to align the 1x4 boards with the top of the trusses.
Install fascia with 8d galv. nails
2. Select a 1x4-7' white pine fascia board next.
Cut this board to fit against right gable trim.
3. Repeat to install fascia on rear of building.
Straight Edge
Detail 'E'
Roof Sheathing
2x4 Soffit Block
2x4 Truss
1x4 Fascia
2x4 Tie Plate
1x4 -6' Fascia Board
Nail Fascia to
2x4 Block
2. Make sure the trusses and gables are plumb and the roof sheathing meets at center of 3rd truss.
Starting at the left end of the building, install a 48"x72" OSB roof panel flush with the 1x4
trim on the gable. See detail below. Use 7d sinkers spaced 12" apart.
3. Select a 48"x83-1/2" sheet and install next. Cut this panel to be flush with right gable trim.
4. Install the top row of roof sheathing. The roof sheathing will be about 1" below the ridge to
allow for optional ventilation. Cut the 36-1/2"x83-1/2" sheet to fit.
5. Repeat to on opposite side.
Install Roofing — Not Supplied in Kit
Install metal roof edging 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.
Ridge
Vent
Shingles
Truss
Air
Space
Optional ridge vent provides
ideal ventilation.
36-1/2" x 72"
48" x 72"
Cut to
Length
Cut to
Length
Step 17 Install Doors & Hardware
1. Locate the door that has a 2x4 fastened, on edge, to the
back side of the door. When doors are closed this 2x4 will
be in the center where doors meet. Lay the door with the
trim facing up and install (3) three 5" hinges to the right
side. To position the hinge properly, hold the rectangular
plate against the frame. Use 1-1/4" black screws.
2. Install hinges on the left side of the other door.
3. 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 d
Left Door
to be flush with the frame of the door opening.
You can move the trim in or out to make the
door spacing equal.
4
. Determine position of hinges and install to side
trim with 2" screws.
oes not have
Siding Extends Past Trim
Barrel Bolt on the
back of left door
6. 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.
7. Install anothe
r barrel boltat the top of the
door.
5. Install door hasp on double doors. When properly
installed the hasp will fold in half to receive
locking latch and the screw heads will be
covered.
Fold Hasp to Cover
Screws
Material Packaged In Component Kit
5 Collar Ties 2x4 82"
14 Truss Rafters 2x4 80-1/2"
48 Wall Studs 2x4 72"
4 Wall Plates 2x4 68-1/2"
2 Wall Plates 2x4 67-1/2"
2 Wall Plates 2x4 58-1/2"
2 Wall Plates 2x4 34-3/4"
4 Gable Studs 2x4 23-1/2"
10 Truss Gussets 7/16" 10" x 24"
20 Truss Gussets 7/16" 12" x 24"
7 Soffit Panels 3/8" 7" x 48"
8 Filler Panels 3/8" 4-1/4" x 48"
2 Fascia Boards 1x4 x 84"
2 Fascia Boards 1x4 x 72"
10 Siding Panels 48" x 75-3/4"
2 Siding Panels 16" x 75-3/4"
2 Gable Siding Panels 48" x 40"
4 Gable Siding Panels 48" x 28"
2 Roof Sheathing 48" x 72"
2 Roof Sheathing 48" x 83-1/2"
2 Roof Sheathing 36-1/2" x 72"
2 Roof Sheathing 36-1/2" x 83-1/2"
Material not used in this model
8 Boards 2x3 x 42-3/8"
4 Soffit Boards 3/8" x 7" x 48"
4 1 lb. box 10d Sinkers
4 1 lb. box 8d Galv.
2 1 lb. box 7d Sinkers
1 1 lb. box 6d Galv.
4 1 lb. box 6d Common
50 ea. 1-1/2" Exterior Screws
25 ea. 2-1/2" Deck Screws
6 ea. 5" Door Hinges
1 ea. 4-1/2" Door Latch
2 ea. 6" Barrel Bolts
25 ea. 2" Hinge Screws
25 ea. 1-1/4" Hinge Screws
6 ea. 1x4 Metal Plates
10 ea. 2x4 Metal Truss Hangers
2 ea. Bottle Glue
2 ea. Plywood Gussets 3-1/2" x 32"
1 ea. OSB Filler 3-1/4" x 67-1/4"
18 ea. 2x4 Truss Jig Blocks 6" to 8"
2 ea. 1x6 Keystone 8-1/2"
4 ea. 1x4 Gable Trim 81"
4 ea. 1x4 Corner Trim 75-3/4"
4 ea. 1x3 Corner Trim 75-3/4"
4 ea. 1x4 Wall Trim 72"
3 ea. 1x3 Door Trim 72"
2 ea. Pre-built Door 32" x 71-1/2"
4 ea. Gable Siding Fillers 2"x3"
Qty.
7 bdl. Roof Shingles
6 pcs. Roof 'drip' Edge 10'
Optional Shingles
Install Shingles. Purchased Separately
Install metal roof edge the perimeter of the
building. Install shingles according to the
instructions on the wrapper. If you need more
detailed instructions on installing shingles, there
are good publications at book stores or online.
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