I then build up a ladder of 2x4 s on the ground after decking the roof.
Roof truss gable ladder.
2x6 ladders with one dropped gable truss and one dropped truss are applicable for overhangs up to 3 ft.
That rafter outside forms the overhang for the barge boards to fix to and so the soffit boards and ventilation are continuous all the way around the structure.
2x4 ladders with one dropped gable truss are applicable for overhangs up to 2 ft.
Is equal to twice the design truss spacing less.
A gable truss sits on the end wall of a structure and has vertical studs every 2 feet or 16 inches.
I nail the ladder to the decking and to the gable end truss.
Cut enough 2 by 4 supports to allow you to space one every 12 inches along the length of your truss brackets from step 2.
If the roof eave extends beyond the gable end wall by more than 1 then a dropped gable is normally used to support the roof sheathing.
Simplified gable framing with trusses is possible with a ladder panel designed by the small homes council.
Although the panels were designed for use with single plane roof trusses they can be adapted to conventional.
Cut a number of 2 by 4 plank supports the width you would like the truss to be minus 3 inches to allow for the two lengthwise 2 by 4s.
The picture above shows the plan view of a gable roof.
Except for tack on ladders have the ladder framing extend into the roof a distance at least equal to the overhang.
Gable trusses are more expensive than common structural trusses because more lumber is required.
I turn my first layer of decking so that the crown is down forcing the lower end up.
Gable end overhangs constructed using the ladder detail.
Then a 2 4 outlooker is placed over the dropped gable and butted into the side of the adjacent full height truss.
Step 4 lay the two truss brackets from step 2 on the ground parallel to each other.
Gable ladders to be fixed directly to last truss with wallplate may be extended over the gable ladder width for added support if required bargeboards and soffits to be nailed directly to the gable ladder jack rafter 25mm deeper than trussed rafter and birdmouthed over wallplate d max.
If the gable end ov erhang uses the ladder detail method of construction and the length of the ov erhang is greater than 8 inches to 12 inches you may be able to strengthen the connection of the ov erhang by installing from the attic inch diameter lag screws that are long enough to go through the gable truss or rafter through the wall sheathing and 1 1 2 inches into the inside framing member of the ladder framing.
The top chord of the gable is dropped so that the framer can run a series of outlookers or ladders from the fascia back to the first common truss.
Ladder trusses are made up using four noggins bridging at each corner to support a rafter outside the building.
A gable truss isn t structural and needs a continuous bearing support underneath such as a beam or wall.
Then the barge or fly rafter is attached to the end of the cantilevered outlooker.
