How to Build a Pole Barn Style Garage

A third man in the crew helping with nailing makes this job even easier. Thirteen trusses should be erected in about two hours start to finish. With all the spacers nailed in place, a least two two by fours are required along the bottom chords of the truss as a permanent truss spacer as well. A typical W truss has two equal bays that the 2 x 4 may be run straight down the center on top of the chord and the ends nailed to the top of perimeter 2 x 12. While you have the extra manpower, pass some sheets of AC Repair in Gwinnett County plywood up on the roof. Use 5/8" plywood if possible. 1/2" plywood meets code with metal support clips but is nowhere near as permanent a roof as 5/8 plywood.At this point I install the 2 x 4 "girts" or perimeter horizontal boards that the side wall plywood will be nailed to. On the bottom of the posts at the finished floor height another 2 x 10 or 2 x 12 is installed around the entire perimeter with the exception of the spaces between the garage door openings. A temporary board is nailed across the opening to hold back the concrete when it is poured and then removed later for car traffic. Install the side plywood on both gable ends and the walls. This helps stiffen the structure as well. Install a one by two along both gable ends flush with the top of a scrap piece of plywood laying on top of the truss. It will stick up past the truss top 5/8 inches. Install your fascia boards on the truss bearing sides remembering the roof plywood when installed must be flush with the fascia so as not to create a bump in the shingles. Now install your roof sheathing (plywood). If you have access to an air nailer it will greatly speed this work. Make the roof plywood flush with the inside edge of the perimeter one x two you nailed on earlier.

Start with a full sheet of plywood. If you did your truss spacing properly, the eight foot sheet of plywood will fall directly in the center of a truss for nailing. Tack all four corners and perhaps the middle and move to the next sheet and so on. Start your second row with a ½ sheet of plywood to avoid having any vertical joints line up on the trusses in two consecutive rows. Then go to full sheets and so on. The third row starts with a full sheet again. Leave at least a 2" air space along the top of the roof at the highest point or ridge. On both ends of the ridge on a twenty-four foot garage make the plywood go all the way to the top for about two feet. This will leave a twenty foot slot. When the roof shingles are completed and the vent cap is installed, this slot will let the summers hot air escape out the roof. With all the plywood in place now proceed to nail it all as per your drawings specs but eight inch spacing on the edges of the sheet and 6 inch centers on the field of the sheets should be fine.