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Best Barns Sierra II Assembly Book
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Best Barns Sierra II Assembly Book

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Sierra II
Manufactured by RBS Holdings, LLC
205 Arlington Drive
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
Assembly Book
Revised October 31, 2023
Building Size 12'x16'
Greenville, PA 16125
© Copyright 2022

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Summary of Contents for Best Barns Sierra II

  • Page 1 Assembly Book Revised October 31, 2023 Sierra II Building Size 12'x16' Manufactured by RBS Holdings, LLC 205 Arlington Drive Greenville, PA 16125 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 ©...
  • Page 2 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.
  • Page 3 Optional Wood Floor System Shown below is a typical wood floor. Depending on your area, the construction may have to be changed to meet local codes. The foundation size should be 12' - 0" x 16' - 0". 1. Cut (2) two treated 2x4-8' boards in half. 2.
  • Page 4 Optional Wood Floor System 8. 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 if the floor is square. The diagonal measurement should be 20' - 0".
  • Page 5 Step 1 Assemble Side Walls Do not discard any material until construction is complete, including short 2x4 blocks. 1. Cut (2) two 2x4-16' (one will be treated) to a length of 185". Position the boards together and indicate with 'X' marks where the wall studs will be located. Wall Plates 185"...
  • Page 6 Step 3 Assemble 12' Back Wall 1. Cut (2) two 2x4-12' (one will be treated) to a length of 144". Position the boards together and indicate with 'X' marks where the wall studs will be located. Wall Plate 144" Top Wall Plate Treated Bottom Plate 24"...
  • Page 7 Step 4 Assemble Front Wall Frame 1. Cut (2) two 2x4-12' boards (one will be treated) to a length of 144" for wall plates. Position the boards together and indicate with 'X' Marks where the wall studs will be located. Treated Bottom Plate 96"...
  • Page 8 Step 5 Set Wall Panels 1. Erect back wall and side walls. Secure walls together at the corners. Use (4) four 10d sinkers per corner. Brace side walls with pre-cut wall studs to hold walls secure and plumb. 2. Starting at back corner install a full width siding panel with the 'LAP' edge flush with the siding on back wall and flush with top plate.
  • Page 9 Step 6 Assemble Roof Gables 1. Cut (2) two 2x4-12' boards to a length of 144". 2. Place one of the 144" boards on the floor along with (2) two 80-1/2" long 2x4 rafters as shown below. Bottom 144" plate will be on edge. Rafters will lay flat. There are short 2x4s, that may have an angle on one end, supplied in the kit.
  • Page 10 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.
  • Page 11 Step 8 Install Primed Soffit and Fillers 1. Install a 7" wide x 48-3/4" siding panel over the side wall with the primed side facing down. The 'tongue' edge should be flush with front wall plate, NOT over siding. Tack the soffit with a couple 6d common nails.
  • Page 12 Step 10 Install Siding on Gables 1. Locate pre-cut gable siding. Working left to right install a siding panel with a 'tongue' edge along right side. Install flush with end of frame and top of gable frame. When properly set the bottom edge will have a slight gap between 'Z' flashing.
  • Page 13 Step 12 Layout Roof Trusses & Install Soffit Blocks 1. Starting on back corner 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.
  • Page 14 Step 13A Install Trim Do not install gable trim on front in this step. 2. Install (4) four 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.
  • Page 15 Step 13B Install Trim 5. 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 6d galv. nails. 6. Locate (2) two 82-1/2" long 1x4 trim boards. Butt each board against the keystone and flush with the top of the gable frame.
  • Page 16 Step 14 Install Fascia on Side Walls 1. Install a 1x4-6' fascia board against the rear 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 board with the top of the trusses.
  • Page 17 Step 15B Install Roof Sheathing continued Sheets should meet at center of trusses when installed 4. From 4x8 sheets of OSB cut to the sizes indicated with an * below. Repeat for opposite side. 36-1/2" x 48" 36-1/2" x 48" 36-1/2"...
  • Page 18 Step 17 Install Door Jamb 1. Install (2) two 48" long x 5-3/8" wide primed siding on the top of the door opening, flush with the front wall siding. Cut 2nd piece to fit. Use 6d galv. nails. 2. Locate (2) two 84" long x 5-3/8" wide primed siding.
  • Page 19 Step 19 Install Gable & Door Trim Keystone 1. Install a keystone and gable trim under the roof sheathing as done in Step 13. 2. Measure from bottom of siding to bottom of door header. Cut (2) two 1x4-8' trim boards to this length and install boards to the sides of the door opening, flush with jamb.
  • Page 20 Step 21 Install Roofing — Not Supplied in Kit 1. Install metal roof edging along the end walls and the front edge of the roof sheathing. 2. Install felt paper and shingles according to manufacture's instructions. Metal Roof Edge Optional Roof Covering Roof Sheathing 10 bdl.
  • Page 21 Sierra 12x16 Material List 2x4 for Collar Ties 82" lbs. Sinkers 2x4 for Truss Rafters 80-1/2" lbs. Galv. 2x4 for Gable Studs 23-1/2" lbs. Common 2x4 for Soffit Blocks 5" or longer lbs. Hanger Nails 1x4 for Side Wall Fascia 72"...