Morning all.
I have dropped a real clanger here that could prove to be quite a costly mistake.
In my loft I have already installed new 200x47mm joists to take a new floor (just for storage). These joists run parallel and in between the original ceiling joists. They rest on the wall plate at each end of the house, bolted to the rafters, and also on a load bearing wall in the middle. This was all fine for one side of the house, however the other side there is no load bearing wall for joists to rest on, so it would be a span of 8m. Plus the loft hatch and binders would be in the way.
So my idea was to fit new smaller joists, 125mm x 47mm C24, perpendicular to those that I have already installed, a span of 2.15m, passing over the top of the original ceiling joists, hung off joist hangers one end and resting on a packer that would rest the wall plate the other end, and bolted to the rafter again. (Please see picture attached).
Now when taking measurements, I failed to account for the angle of the rafter, so effectively the higher up the beam is, the shorter it is, I now have the problem that when the beams are level with the top of the already installed joists that they will be hanging off, they are not long enough to rest on the wall plate.
If I buy 150mm joists and shave about 10mm off the depth making them 140mm they will be level with the joist they will be hanging off, they will be small enough to pass over the ceiling joists, and there will be enough to rest on the wall plate. However, I have just paid more than double what id usually pay for the 125mm joists due to lock down, and id have to pay double again to get the 150mm joists. All this and I have just been furloughed from work. Is there a way I can make the 125mm joists work? Does some sort of bracket exist or something? Or do I have to bite the bullet and buy the bigger joist?
Many Thanks
I have dropped a real clanger here that could prove to be quite a costly mistake.
In my loft I have already installed new 200x47mm joists to take a new floor (just for storage). These joists run parallel and in between the original ceiling joists. They rest on the wall plate at each end of the house, bolted to the rafters, and also on a load bearing wall in the middle. This was all fine for one side of the house, however the other side there is no load bearing wall for joists to rest on, so it would be a span of 8m. Plus the loft hatch and binders would be in the way.
So my idea was to fit new smaller joists, 125mm x 47mm C24, perpendicular to those that I have already installed, a span of 2.15m, passing over the top of the original ceiling joists, hung off joist hangers one end and resting on a packer that would rest the wall plate the other end, and bolted to the rafter again. (Please see picture attached).
Now when taking measurements, I failed to account for the angle of the rafter, so effectively the higher up the beam is, the shorter it is, I now have the problem that when the beams are level with the top of the already installed joists that they will be hanging off, they are not long enough to rest on the wall plate.
If I buy 150mm joists and shave about 10mm off the depth making them 140mm they will be level with the joist they will be hanging off, they will be small enough to pass over the ceiling joists, and there will be enough to rest on the wall plate. However, I have just paid more than double what id usually pay for the 125mm joists due to lock down, and id have to pay double again to get the 150mm joists. All this and I have just been furloughed from work. Is there a way I can make the 125mm joists work? Does some sort of bracket exist or something? Or do I have to bite the bullet and buy the bigger joist?
Many Thanks
