joists

  1. C

    Size of trimmer and trimming joists for stairwell

    Hi all, Doing home renovation in my 1930's semi detached involving moving stairs so need to cut some joists and hoping for some advice. Please note I will be seeking services of a structural engineer closer to the time. Currently upstairs joists run left to right. I plan of fitting a double...
  2. S

    Extending floor joists

    Hi Guys, I'm removing my planked floor and replacing it all with 18mm plywood. I'm then going to add decoupling membrane to tile over. I've come into a little snag where some of the floor joists don't go to the end of the room. Pic below: What is the best way of extending these to the edge...
  3. I

    Moving stud wall under roof joist joint...

    Hi, I'm planning to rearrange the walls in my 2 bed semi to allow for another bedroom. To do this effectively I need to move a stud wall that runs across the roof joists, by about 300mm. I've been up in the loft and there's a joint in the roof joists that sits on the stud wall. When i move the...
  4. TeachMeObiWan

    Thoughts on a beam

    Hi, I'd appreciate anyone's thoughts or suggestions or recomendations. I have a crappy old conservatory that needs something doing. Also it's too hot, so my thinking is to convert it into a garden / sun room. It's currently a lean-to with the left side wall being the garage wall, so the front...
  5. S

    Roof Joist Prop

    Hello! First post here, so I post this humbly. I moved into a new house a couple of years ago which has an original garage on the side of the house but has been extended up to accommodate a bedroom above the garage. Originally there was a lean-to roof that would have been attached to the...
  6. G

    How can I check woodwork under floor

    Hi, I have an old house around 1910 I think. I can't see any access hatch to crawl space - would it normally be behind the front door? That is tiled,. If I want to know the condition of joists etc what is the best way? Is it some specialist survey? Thanks
  7. Moonhead

    No joist in front of loft hatch?

    I'm currently re-securing the ceiling in our bedroom as it has a bulge above the bed that is disconcerting. I've managed to find the joists either side of the loft hatch but cannot for the life of me find one between them, it's a gap of almost a meter. Any ideas? Is it possible that there are...
  8. G

    Flitch beam / joist

    Hello, have to repair an undersized and badly notched joist 38x175mm sitting in an intermediate floor connected to the ceiling below. The joist is sagging but also has a slope resulting in a lower level support in the middle of the flat (double span joists). A metal plate 8x150mm would be...
  9. A

    False Ceiling Joists

    Hi, So I have an extremely noisey neighbour above me and I cant afford to move so my only solution install a false ceiling with "sound" insulation. I have total of 175mm clearance to work with and my plan is to afix battens around the walls with coach bolts and then screw 45mm x 120mm joists...
  10. T

    joists for decking are warped, how to rectify them?

    Hi all, been busy building a decking and I received all the materials for the frame four weeks ago. The joists have been stored outside on their sides on some brick footers. Made some progress at the beginning then had to stand still for a while; thus out of the ten 4.8metres 120*47 joists I...
  11. Gary 41

    Loft insulation - over joists or cut-to-fit?

    Hi, New member with an odd query. I am having to do my own loft insulation in my apartment building on the top floor. (*I have permission from building owner). The professionals won't do it because they cannot install a hatch in between the joists (too small), and the only access point is...
  12. T

    Ridge in floor over breeze block wall

    Looking to re carpet one of our bedrooms, which has a pronounced ridge running the length of it, around 2ft from the nearest wall. Seems this is because the breeze block wall of the room below is higher (especially with joist hangers) than the joists that the chipboard rests on either side...
  13. SS-ProjectBuild

    PIR Insulation between rafters - Cold Roof

    Hi Guys, I am about to put in my insulation between the rafters after my electrics first fix, The question being do I put the insulation in so they are flush to the bottom of the rafters or can I put them above my wiring as long as I leave my 50mm air ventilation gap? There will be 50mm pir...
  14. 20pictures

    Joist Repair

    Would timber plugs sealed in with resin be a suitable repair for this joist? We could thread the cable through just one hole ...the remaining four would be redundant. Replacing it would be quite complex so we would like to avoid that.
  15. A

    Joist replacement (woodworm)

    I've discovered a pretty severe woodworm problem when I went to fit a new carpet in the bedroom upstairs. It appears two of the joists have born the brunt of it and I think they need replacing. I'm going to attempt it myself as well because I'm struggling to get hold of a joiner due to them...
  16. C

    Constructional Hearth Guidance

    Hello everyone, I have spent the last few days reading lots of posts on constructional hearths for solid fuel stoves but very little reference to gas fires. The background: I have bought an 1890's victorian semi which was unoccupied for 16 months and previously rented out. The property...
  17. M

    There's a stream in my house

    Hi. I have just purchased a terraced house. Built circa 1890. It's in a row of 24 houses built on a relatively steep hill. The houses are built in pairs. Each pair is lower than the pair before as they step down the hill. I'm near the bottom. I'm situated so that, looking at the house, the house...
  18. A

    Strengthening loft joists

    Hello, apologies if this question is asked a lot, but I find mixed answers in my searches. I want to board the loft of my 1870-ish mid-terrace house for storage, not a living space, but I also don't want to worry about the weight of the things I'm storing so might want to strengthen my joists...
  19. D

    Experience with wooden floors?

    Hi, first post here. We bought a home just two weeks before the pandemic kicked off... about 2 months later we noticed the living room floor can wobble. We viewed the house three times and visited for measurements many times after, we didn’t notice the floor shift once! There was nothing in the...
  20. D

    Joining joists together, building code

    Hi, Would anyone be able to point me to the relevant building code documents where it details the fixings required to join to joists together to make 1 longer joist. It's my understanding that bolts are required in this situation but after googling I can't find the building code where this is...
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