Fitting Roof Trusses To Wall Plate

Ten tips to safely install a simple domestic roof.

Fitting roof trusses to wall plate. The timbers trusses or rafters need securing to the wall plate. A ledger is a horizontal board that is attached to the top of the the wall. Mechanically this is the preferred method or manually lift the first truss onto the roof in the vertical plane. Mark out the wall plate to show the truss location.

Make sure that the roof truss is aligned properly on each side of the wall plates. Fitting roofing wall plates top plates setting out squaring levelling and fixing strapping gable and hip roof wall plates for rafters joists and roof trusses getting the wall plates or top plates as they are sometimes called right is important because all the ceiling joists roof rafters hips etc. 01 preparing the working area follow these steps to prepare the working area for receiving the roof trusses. Make sure wall plates are level and secured to load bearing walls.

Screw fix a c16 structural grade timber 150mm x 50mm length to the face of the. The beam extends to the far end of the roof hanging over the trusses still sitting there. Install the first truss so that it coincides. Insert a 6 cm 3 1 2 inch nail through the truss base where it sets on the wall plate.

Install the second truss in the same way 24 inches along the wall from the first truss. As the workers position each subsequent truss they attach it to the wall plates and to the ridge beam. Will all be fixed to them. Walls that are constructed of concrete block that need to be covered with a roof will require the use of a ledger.

This can be done by skew nailing on all form of roof but on trusses or trussed rafters there is a danger of skew nails disturbing the joint or themselves being deflected by the plates or connectors resulting in an ineffective joint. 5 step 1 step 2 step 3 step 4 crane lift the truss pack onto the wall plate. For example when setting trusses you will rest each of the two ends of the truss onto opposite walls which have wall plates at the top of each wall. Where trussed rafter roofs are not subject to uplift a minimum of two 4 5mm x 100mm galvanized round wire nails skew nailed one on each side of the trussed rafter or truss clips fixed in accordance with the manufacturer s instructions are acceptable.

Nail a long 2 by 4 to the underside of the rafter on the opposite side of the truss from your diagonal brace so that it extends along the length of the roof passing through the second truss.