Best Barns Aspen 12' x 8' Safety guide

the Aspen 12' x 8'
Assembly Book
Best Barns USA
Revised January 9, 2023
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
800-245-1577 - Mon - Fri 8AM - 5PM EST
724-866-4357 - After hours and weekends
Email - [email protected]
IMPORTANT INFORMATION ABOUT YOUR KIT
Thank you for purchasing our kit. Please read the following information before beginning construction.
Always check with your local HOA or building code office for any requirements or restrictions.
Tools Required: Hand or Circular Saw
Cordless Drill
Hammer
Pencil
Level
Measuring Tape
6'-8' Ladder(s)
Safety Glasses
Dust Mask
Phillips Screwdriver
Framing Square
Always wear safety glasses when cutting or nailing!
Additional Materials - Not included in kit:
Required: Shingles or metal roofing, Drip Edge, Roofing Nails or Screws, Paint
Optional: Caulk, Ridge Vent
Floor: Wood flooring is sold optionally. You may choose to build your own or pour a cement pad.
Terminology:
Square - Confirm corners are at 90 degrees
Plumb - Confirm walls and trusses are straight vertically
Wall Plate - Top and bottom 2x4s used to frame walls
Tie Plate - 2x4s connecting wall sections together
Header - Spans top of door opening
OSB - Oriented Strand Board
LAP - Edge of siding that overlaps Tongue
Tongue - Edge of siding that is overlapped
Organize:
Unpack all items & organize according to size and type. This will make items easier to find
when instructed.
Review the parts list on the back page. Should there be missing items or sub-par material
contact Best Barns Customer Service.
DO NOT discard any material including the pallet until your project is complete.
Assembly:
Review all instructions before you begin. Please follow steps carefully and in sequence for
successful results.
If you have any questions we are happy to assist you. Please contact us at:
Primed Siding Detail

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 (173").
2. Cut 2x4-8' floor joists to a length of 7'-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 8'-0" building width.
1. Treated lumber is not cut to exact length. Cut (2) two 2x4-12' boards to 12'-0".
Layout for 16" on center joist spacing. 'X' marks where floor joist will be placed.
Construction Details for Optional Floor System
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.
Material Description 8' x 12' Floor
2x4 Treated Headers 2 pcs. 12'
2x4 Treated Floor Joist 10 pcs. 8'
Flooring 5/8" 4x8 3 pcs. 4x8
8d Screw Floor Nails 1 lb. 8d
16d Galv. Box Nails 1 lb. 16d
If necessary use bricks, patio stones or similar material to level or provide additional support
to the floor. If your ground has low areas consider adding gravel and or 4x4 treated timbers
to rest the floor on. If you use 4x4 timbers you will need (3) three pieces 12' long.
3. Install the floor joists, over the 'X' marks, between the 12' long joist headers. Use 16d galv.
deck nails.
!
!
Joist 7' - 9" Long
2x4-12' Joist Header
12' - 0" Floor Length
8' - 0" Floor Width
Leveling Blocks
4' x 8'
4' x 4'
XX
XX
X
X
16"15-1/4"
Joist Header X
X
16"

Step 1A Assemble End Wall Frames
1. Install (3) three 2x4-72" wall studs between
(2) two 48" long 2x4s. Install the center stud
in the middle of the wall frame. Make (2) Two Frames
48" Wall Plate
Use (2) two 10d sinkers
at each end of stud.
2. Repeat to make (1) one more 48" frame.
Set aside.
3. Place (1) one of the 48" wall frames on floor positioned on the left. Square frame by measuring
diagonally (corner to corner). The measurements will be the same when square.
4. Locate the (2) two pre-built 48" wall frames. Position the one without the center stud against
the 48" wall frame with the angle part of the frame on the right.
You can temporality nail 1x4
boards, supplied in kit, to help
hold the wall frames in place.
1x4 Blocks
6. Install a 72" long 2x4 in the center of
the wall frame. Refer to the other pre-
built wall frame for proper position.
5. Nail both wall frames together
using 10d sinkers. Use (8) eight
nails per side equally spaced.
48" Frame

LAP Edge
LAP Edge
9. Position the other set of end wall frames on the floor. This time with
the frame with the angle corner on the left as shown.
10. Working from left to right install (2) two more
siding panels as done above. DO NOT
REMOVE WALL FRAME from floor.
LAP Edge
7 Install the siding panel with the angle cut with the 'LAP edge' flush with the end of the wall
with the siding extending 3/4" below the bottom plate. The siding will extend 1/2" above the
angled 2x4 of frame and 1" above top plate. Use 6d galv. nails spaced 8" apart.
8. Install a full width x 76-3/4" siding panel on the left. Siding will extend 3/4" below bottom
plate andl extend 1" above the wall frame. Set wall aside.
Siding Extends 3/4"
Below Plate
Step 1B Assemble End Wall Frames Contined
Siding Extends 1"
Above Plate
Siding Extends
1/2" Above Angle
LAP Edge

Step 2 Assemble Roof Trusses
1x4 Block
1. Position one of the pre-built gable frames against the top edge of the end wall panels. Temporarily
tack nail 1x4 blocks to the floor along the edge of the gable frame and on the angle of wall.
The gable frame is not attached to wall in this step.
2. Remove the wall panels and the gable frame. Do not remove the 1x4 blocks. They will be
used in the next step to make sure the trusses are assembled identically.
3. Position a 69-1/2" long 2x4 and a 47-1/8" long 2x4s on the floor against the 1x4 blocks and
secure the 2x4s together with a wood gusset. Using (10) ten 6d common nails evenly spaced.
4. Turn truss over and apply wood gusset to the opposite side.
5. Assemble (4) four more trusses. Set all trusses aside and remove temporary 1x4 blocks.
1x4 Block
Pre-built Gable Frame
2x4 - 47-1/8" Long
2x4 - 69-1/2" Long

72" 2x4 Bottom Plate
2x4 Header
Support Flush
with Plate
72" Long Wall Plates
X
X
X
X
X
X
If you want to locate the door on the left turn the
walls over before applying the siding.
4. Install a 30" x 76-3/4" siding panel. The siding will extend 3-1/2" beyond the left end
of the wall frame. The siding should extend 3/4" below the bottom plate and will extend
1" above the top plate. Install a full width x 76-3/4" siding panel on the right side of the
wall panel. This panel will be flush with header support.
30" Siding
Cut Edge
Siding Extends 3-1/2"
Beyond Wall Frame
3. Install (2) two 72" wall studs between (2) two 13-1/2 long 2x4s .
Step 3 Assemble Front Wall Frames
1. Position (2) two 72" long 2x4 boards together and
indicate with 'X' marks, where the wall studs will
be located.
2. Install (4) four 2x4-72" wall studs between the 2x4s from above. Use 10d sinkers.
X
X
24"
24-1/4"
4. Install a 72" long 2x4 at the end of each wall frame
flush with bottom of bottom plate. Use (4) four 10d
sinkers each board. These will support the door
header installed later.
If you purchased optional windows
you can cut the opening now or later.
Refer to instructions in window box.
Extends 3/4" Below Plate

2. Install 52-7/8" long wall studs, between the wall plates, over the 'A', 'B' and 'X' marks. Use
10d sinkers. Nail wall frames together. Square wall frame.
3. Install a 30" long 2x4 as a tie plate flush with end of wall. Use 10d sinkers spaced 10" apart.
5. Install a 77" long 2x4 next. Finish another 30" long 2x4.
6. Install (3) three full width x 60" siding panels. The
siding should extend 3-1/2" beyond the wall frame
on left, 2" above top and 3/4" below bottom plate.
LAP Edge
LAP Edge
A
AB
B
XX
XX
XX
XX
X
X
X
X
Step 4 Assemble Back Wall
Siding Extends 3/4" Below Plate
1. Position (4) four 68-1/2" long 2x4s 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'.
77" Tie Plate
68-1/2" Bottom Plate
AB
Siding Extends 3-1/2"
Beyond Frame
Siding will extend 2"
above the top plate.
68-1/2" Wall Plate 68-1/2" Wall Plate
24"
19-3/4" 24"
23-1/4"
30" Tie Plate
30" Tie Plate

4. Install the other end wall panel and
the 13-1-2" wall frame. Brace wall
frame with another 6' long 2x4.
2x4 - 51-1/2"
2x4 - 51-1/2"
2x4 Header Support
5-1/2" High Siding
Step 5 Set Walls
1. Set the back wall and left side end
wall on floor. Secure walls at corner
with (4) four 10d coated sinkers.
Nail bottom plate to floor.
2. Set the larger front wall panel.
5. Insure walls are plum and door
opening is square. Nail wall panels
to the floor through the bottom plate.
Use 10d sinkers or, if erecting on a
concrete slab, concrete anchor bolts
(not included) spaced 24" apart.
6. Install (2) two 51-1/2" long 2x4s.
Nail 1st board into top of header
supports using 10d sinkers. Then nail
2nd board to 1st.
3. Use a 6' long 2x4 to brace the front wall.
7. Install a full width x 4-3/4" siding
panel over the door header. Install
1" above top of 2x4.
8. Install a 18" x 76-3/4" siding
panel to finish.

3. Install metal flashing on top of the
siding. Nail with a couple of 6d galv.
nails to hold the flashing in place
until the siding is installed next.
4. Install flashing on opposite wall.
Metal Flashing
4. Remove a 6' long 2x4 used to brace wall and cut in
half. Install the 3' long 2x4 over the front wall plate,
butted against the gable frame. Use 10d sinkers.
5. Remove the other wall brace and
install next. Cut the 2nd 3' long
2x4 to fit against gable frame. Use
10d sinkers.
1. Position a pre-built gable frame on the end wall
flush with outside of 2x4 wall plate. NOT flush
with siding. Secure the frame by toe nailing into
the top plate of the end wall. Use 10d sinkers.
2. Repeat step to install the opposite gable frame.
Step 6 Set Gables - Install 2X4 Tie Plates
Front Wall of Shed

1. Install gable siding using 6d galv. nails. The siding
will extend above the gable frame to receive the
roof sheathing.
2. Repeat on opposite gable.
Step 8 Set Trusses
1. Install 2x4 roof trusses directly over each wall stud on the back wall. The 3rd truss will be
directly over the middle of the double studs. Secure trusses in place with metal truss hangers.
Use 7d hanger nails to secure the metal hanger to the 2x4 wall plates and trusses.
Metal Truss Hanger
Metal Bracket
2x4 Tie Plate
2. Install hangers on top of 2x4 tie plates on front
wall directly opposite of hangers on back wall.
Secure the trusses to the front wall.
Step 7 Side Gables
Siding Extends
1/2" Above
Front Wall of Shed
5-1/2" x 4-1/2" Siding
24-3/4" Wide Siding

2x4 Truss
OSB Sheathing
Straight Edge
22" x 48"
48" x 72"
1. Install (2) two 46" x 72" OSB sheathing panels across the front of the roof. Butt 46" edge
against back of gable siding. The 72" edge should be flush with the end of the 2x4 truss, see
detail below. Make sure the trusses are plumb and the roof sheathing meets the center of the
3rd truss. Use 6d common nails spaced 12" apart. The roof sheathing will be about 1" below
the ridge to allow for ventilation if a ridge vent is installed.
Step 9 Install Roof Sheathing
46" x 72" Sheathing
3. Starting in lower left rear corner install (2) one 48" x 72" OSB sheathing across roof. Butt the
48" edge against back of gable siding and position the bottom edge 2-1/2" past back wall siding.
4. Install (3) three 22" x 48" wide roof sheathing across the top of the building. Siding will be
about 1" below ridge.
1X3 Trim
5. Install 60" long 1x3 trim boards on
the back wall, flush with the siding
on the end wall. Use 6d galv. nails
spaced 12" apart.
1" Below Ridge

Step 10 Install Soffit and Trim
2. Install (1) one 1x4x47-1/4" and (1) one 1x4x72" long gable trim, flush with the top of the roof
sheathing on each end wall. Use 6d galv. nails.
3. Install (2) two 77-1/2" long 1x3 trim on the front corners, flush with the siding on the sidewall.
4. Install the remaining (4) four 1x4 trim boards at the end wall corners flush with the 1x3 trim
on front and back walls.
77-1/2" Long 1x3 Trim
5. 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. Install a 1x3x55-1/4" board, that has angle cuts on both ends, across the
top of the side trim. About 3/4" of siding will hang below top trim.
1x4x47-1/4" Gable Trim
1x4x72" Gable Trim
1. Install 6-1/4" x 48" soffit panels under the
front truss overhang. Use 6d galv. nails.
79-1/2" Long 1x4 Trim
58" Long 1x4 Trim
Siding 3/4"
Below Trim

1. Install 1x6 fascia over the ends of the trusses, flush with the top of the roof sheathing.
Cut a 75" long 1x6 board so to be flush with the face of left wall gable trim and center
of 3rd truss. Use 6d galv. nails.
2. Cut to fit the last 1x6x75" board and install to finish.
Air
Space
Truss
Shingles
Step 11 Install Front 1x6 Fascia
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.
Step 12 Install Roofing — Not Supplied in Kit
1x6 Fascia
Felt
Paper
1x4 Gable Trim
Top of 1x6 Flush with Top of OSB
Center of 3rd Truss
Install shingles or metal edge according to
manufacturer's instructions. Optionally install
felt paper before applying.

Step 13 Install Doors
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. Installdoor hasp on 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
2x4 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.

Packing List For Material Shipped on Pallet
19 2 x 4 72" 2 1 x 4 79-1/2" 1 Door Latch 2 lb. 10d Sinkers
5 2 x 4 69-1/2" 2 1 x 4 72" 6 4" Hinges
4 2 x 4 68-1/2" 2 1 x 4 47-1/4" 2 6" Barrel Bolt 1 lb.7d Hanger Nails
8 2 x 4 52-7/8" 2 1 x 4 58" 10 H1 - Truss Hangers 3 lb. 6d Common
4 2 x 4 48" 2 1 x 3 60" 25 2-1/2" Deck Screws
3lb. 6d Galv.
5 2 x 4 47" 2 1 x 3 72" 2 Z Flashing - 6' 2 Bits for screws
2 2 x 4 51-1/2" 1 1 x 3 55-1/4"
2 2 x 4 13-1/2" 2 1 x 3 77-1/2" 10 Wood Gussets for Trusses 8" x16"
2 1 x 6 75"
2 1 x 3 60" 3 LP Primed Soffit Panels 6-1/4" x 48"
1 2 x 4 8 Truss Jig Blocks 1 x 4 - 12"
2 Pre-built Wall Panel 48" x 75" w/ Angle Corner 5 48-3/4" x 76-3/4" 1 18-3/4" x 76-3/4"
2 Pre-built Gable Frames 64-1/4" 3 48-3/4" x 60" 1
2 Barn Doors 24" x 72" 1 30" x 76-3/4"
2 48" x 72" ( 1 Attached to Pallet) 2 Gable Siidng
2 46" x 72" 3 2 Gable Siidng 24-3/4" x 14-5/8"
2 Gable Siidng - End Fillers 5-1/2" x 4-1/2"
48-3/4" x 4-3/4"
7/16" OSB Sheathing
47" x 19"
Pre-Built Components
Aspen 12' x 8' Shed Kit
2x4 Framing & Trim Hardware
Miscellaneous Material
22" x 48"
LP Primed Siding
77"
2 2 x 4 30"
5 Bundles of Roof Shingles
5 Pieces of 10' Long Roof Drip Edge
Material for Roof - Not Included