Fixing Roof Trusses To Wall Plate

The roof can suffer from localised condensation especially if not adequately ventilated.

Fixing roof trusses to wall plate.

Wall plates should generally be in lengths of not less than 3m but shorter lengths should extend over at least 3 joists rafters or trusses. This could lead to premature corrosion of nails and fixings. Carry the truss to the opposite end of the roof. Fixing roof trusses to a wall plate requires a small amount of carpentry knowledge such as the abilities to read a tape measure and operate a framing square.

Fixings used to connect the roof structure to the wall plate should be specified according to the roof construction and exposure of the site. Step 1 get ready. A galvanised nail has a slightly rough surface to a plain nail and therefore gives an improved resistance to movement. Truss clips hold truss or rafter to the wall plate.

A ledger is a horizontal board that is attached to the top of the the wall. An alternative fixing to triple grip and multi grip in most cases for tiled roof. When damaged or altered this can effect structural integrity of th e roof system. Faster and easier to fix than triple grip no need for left or right hand.

Localized damage to one or two trusses will typically not result in structural failure of the roof system but could cause the roof or ceiling to sag. You can nail fix the truss into position using either method one opposite or method two below right. Roof trusses are engineered components. To fix the joists and rafters down on to the wall plates they should be toe or skew nailed to the top plate like below.

Otherwise setting roof trusses onto wall plates can be done by the average do it yourselfer usually in one to two days depending on the size and scope of the project. Align the truss to the marks you made on the wall plate. The ledger is needed to properly attach the perpendicular roof trusses to the top of the structure. Level and nail fix both sides of the truss with a brace fixed to the structural timber on the adjacent table lift.

Roof truss damage and repairs. 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. Walls that are constructed of concrete block that need to be covered with a roof will require the use of a ledger. Set out the ceiling joists onto the wall plates the ceiling joists are installed before the rafters as they will stop the roof spreading and also give something for you to lay planks across to stand on when building the roof.

In scotland 100mm x 25mm wall plates should be used in long lengths butt jointed. These pre punched and formed galvanised steel timber connectors are ideal for. The first thing you need to do is to assess the damage.