Roof Truss Gable Ladder

If a truss roof is used with this method the gable truss is manufactured 3 shorter than the others.

Roof truss gable ladder.

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. Except for tack on ladders have the ladder framing extend into the roof a distance at least equal to the overhang. Although i hate building a truss roof sometimes it is called for. Then a 2 4 outlooker is placed over the dropped gable and butted into the side of the adjacent full height truss.

Gable end overhangs constructed using the ladder detail. Is equal to twice the design truss spacing less. Then the barge or fly rafter is attached to the end of the cantilevered outlooker. I nail the ladder to the decking and to the gable end truss.

Step 4 lay the two truss brackets from step 2 on the ground parallel to each other. Gable trusses are more expensive than common structural trusses because more lumber is required. 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. 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.

The ladder panels which are placed over each gable truss provide good ventilation and pleasing appearance. The picture above shows the plan view of a gable roof. 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. Simplified gable framing with trusses is possible with a ladder panel designed by the small homes council.

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. A gable truss isn t structural and needs a continuous bearing support underneath such as a beam or wall. 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.

Ladder trusses are made up using four noggins bridging at each corner to support a rafter outside the building. Although the panels were designed for use with single plane roof trusses they can be adapted to conventional. A gable truss sits on the end wall of a structure and has vertical studs every 2 feet or 16 inches. I turn my first layer of decking so that the crown is down forcing the lower end up.