Step 1 get ready.
Fixing roof trusses to wall plate.
In scotland 100mm x 25mm wall plates should be used in long lengths butt jointed.
Roof truss damage and repairs.
Level and nail fix both sides of the truss with a brace fixed to the structural timber on the adjacent table lift.
Pre punched formed galvanised steel connector for securing timber rafters and trusses to timber top plates.
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.
You can nail fix the truss into position using either method one opposite or method two below right.
Fixings used to connect the roof structure to the wall plate should be specified according to the roof construction and exposure of the site.
A ledger is a horizontal board that is attached to the top of the the wall.
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.
When damaged or altered this can effect structural integrity of th e roof system.
If the roof truss has a small crack you will be using the two wooden boards to patch it up but if the crack is much more severe you should use the steel plates because they offer much stronger support to the damaged truss.
A galvanised nail has a slightly rough surface to a plain nail and therefore gives an improved resistance to movement.
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.
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.
The ledger is needed to properly attach the perpendicular roof trusses to the top of the structure.
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.
Faster and easier to fix than triple grip no need for left or right hand.
Roof trusses are engineered components.
This could lead to premature corrosion of nails and fixings.
The roof can suffer from localised condensation especially if not adequately ventilated.
These pre punched and formed galvanised steel timber connectors are ideal for.
Align the truss to the marks you made on the wall plate.
Truss clips hold truss or rafter to the wall plate.
Carry the truss to the opposite end of the roof.
An alternative fixing to triple grip and multi grip in most cases for tiled roof.
Wall plates should be joined using half lapped joints at corners and in running lengths.
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.
