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How to fix roof joists to wall plate.
Place the bottom of the truss onto the wall plate aligning the left edge of the truss with the edge marks placed on the.
Mark the holes with the pre drilled wall plate make sure you drill the plate and then the wall square blow the dust out of the holes although pull out is not a major issue here you won t tighten the plate if the studding threaded bar is not tight you can enlarge the wall plate holes afterwards if needs be.
The plate should be 50mm deeper than the joists that you are fixing presumably on hangers.
The joist plate is bolted to the timber making the joint b as strong as the original joist.
Piers and plates to raise the roof duration.
Fitting roofing wall plates top plates setting out squaring levelling and fixing strapping gable and hip roof wall plates for rafters joists and roof.
Squaring and fixing the wall plates to the brickwork.
A new piece of timber is cut a to replace the damaged piece and the joists plates are positioned ether side of the joists with the end of the joist plate right up against the edge of the timber so it is the joist plate that site on the bearer a.
First work your way along the brickwork and clear any snots off.
Same size timber as your joists preferably i d look at fitting a 6x2 or whatever size joists are being used timber to the wall using m12 threaded bars around 200mm long drilled through the timber and wall using a 14mm drill bit at 600mm centers.
Clean the hole out thoroughly of all dust and debris either with a pump or hoover.
Drive the nail through at an angle beginning the nail 5 cm 2 inches up from the bottom of the truss.
To ensure a secure fix for the rafter to the wall plate a fixing process known as toenailing is normally used whereby nails are driven in to each side of the rafter at an angle and down in to the timber that forms the top of the wall plate.
