An alternative fixing to triple grip and multi grip in most cases for tiled roof.
How to fix roof trusses to wall plate.
Level and nail fix both sides of the truss with a brace fixed to the structural timber on the adjacent table lift.
Position the new timber with fixed repair plates into place with the non plate end sitting in or on top of the wall depending on how the original was and ensure that the plate end sits over the original timber and that they are butted together firmly.
Make sure that the roof truss is aligned properly on each side of the wall plates.
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.
Insert a 6 cm 3 1 2 inch nail through the truss base where it sets on the wall plate.
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.
Roof truss damage and repairs.
As with rafter style roofs toenailing is one of the most common ways of attaching a truss style roof to a wall plate.
Step 1 get ready.
The first thing you need to do is to assess the damage.
Faster and easier to fix than triple grip no need for left or right hand.
Walls that are constructed of concrete block that need to be covered with a roof will require the use of a ledger.
Align the truss to the marks you made on the wall plate.
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.
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.
Joist end repair plates for roof trusses.
Carry the truss to the opposite end of the roof.
Roof trusses are engineered components.
Pre punched formed galvanised steel connector for securing timber rafters and trusses to timber top plates.
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.
The ledger is needed to properly attach the perpendicular roof trusses to the top of the structure.
These pre punched and formed galvanised steel timber connectors are ideal for.
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.
When damaged or altered this can effect structural integrity of th e roof system.
Given that this section of the bottom chord is likely where one of the connector plates that hold the truss.
A ledger is a horizontal board that is attached to the top of the the wall.
