Flat Roof Wall Plate Fixing

If the wall plate of the flat roof is level with the wall plate of the existing house can you make the two wall plates the same height then you will need to strip off some roof tiles and run the new joists through butting and fixing them up to either the roof rafter or the ceiling joist on top of the house wall plate.

Flat roof wall plate fixing.

Fixing a wall plate hi. And attaching the wall plate for it theme. Where a new flat roof abuts an existing external wall the joists can be hung on metal joist hangers which are fixed to a horizontal timber plate wall bolted to the 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.

The plate straps at least should be in your spec also yes to the half laps. 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. Generally wall plates are in lengths of not less than 3 m. However when using a 100x75mm wall plate what size anchor bolts should i use for fixing to a normal brick wall.

Creating a fall on a flat roof. 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. A cavity closer should be provided to the top of the walls to prevent fire spread and to stop damp air entering the roof space. Fixing joists to an existing wall.

I m having an extension built and would like to know how to properly and safely fix for example anchor bolts what size etc a wall plate to an external masonry wall so that the joist will hold a 102kg rooflight. Fixings used to connect the roof structure to the wall plate should be specified according to the roof construction and exposure of the site. These are typically 1 2 m long with a cranked end and are fixed to the wall plate at 2 m centres. We are converting the flat roof on an old outbuilding on the front of our house to a lean to pitch roof.