Thanks for all your advice to the people who replied to the original thread dated 16/10.
I have taken some pictures as best I can of the current bracing in the loft. These are at:
The first two show diagonal bracing. The apex of the bracing is in the middle of the roof slope at the top. This is present on both roof sides. Each slope that forms the bracing does not go right to the corner of the loft space, I have tried to show this on the picture with the red arrow. There is probably a 1.5 meter gap between where the brace starts and the end of the roof, on both sides of the brace and both sides of the roof.
The third picture I think shows horizontal bracing, this does not go the full length of the roof space. I would say is covers 75% of the length of the roof.
There does not appear to be any other form of bracing.
Any comments would be appreciated.
I would also like to lay some loft flooring, this will only be in the middle of the 'W' shape. Currently the floor is made up of rough pieces of chipboard, paintings (its true..) and off cuts of wood. Most are nailed to the joists.
I want to pull this up and lay some tongue and groove chipboard. The floor will not be walked on often, I will be storing empty cardboard boxes, a few spare carpet tiles and some christmas decorations up there. There is also a suspended shelf in the loft which used to hold a water tank, the tank has been removed, but the shelf remains. I just have boxes on it now.
I just want to check that no additional strengthening work would be needed to do what I have described above.
Thanks,
James