joists

  1. L

    Suspended floor anchor bolt spacing

    It is proposed to create a storage room utilizing the roof void above an integral garage. The span is 9' (2740) Plan to use 6x2 (47x150) rough sawn treated timber joists hung from wall plates at 450mm centres with 1 (offset) row of noggins. (I've checked these against tables and this size timber...
  2. D

    Sub floor over conc. base: Any suggestions?

    I treated the conc. base with sikka rapid dpm, then put membrane or damp course under the stud soles. I'll cover the whole base with a taped seam membrane anyway. I was thinking of masonry screwing a couple of treated 38x63 CLS down flat directly on the membrane at the base of the stud wall to...
  3. Dan watts

    Loft conversion issue: Short term solution with long term benefit.

    Hi all. Im currently doing a load of work on the house and decided the loft would be a good place to store some unused materials and some tools. This is not going to be anything like a loft conversion. I just want a few boards up there for storage, which is easy enough. Im planning on hanging...
  4. J

    Cottage bedroom floor joists need strengthening

    The bedroom floor joists in our old cottage need strengthening, the floor is very bouncy and noisy. Currently there’s a hardboard floor down which we will either replace with same or a wood floor. My question is, what kind of tradesman do I need to do this? Wooden floor installers don’t seem to...
  5. D

    Bouncing Floor Joists

    Hi, All my floor joist bounce but after recently rearranging my bedroom the joist next the wall is now getting walked on more and is bouncing. I have tried glueing and screwing plywood to it but no joy. There is a 60mm gap between the joist and the wall, the joist is over a patio door. See...
  6. A

    How much overlap for joining 6x2 roof joist over steel beam

    Hi all, so im doing my flat garage roof and need to join the joists over the steel beam and just trying to find out how much overlap you need, is a total 600mm join ok ? so 300mm eitherway from where the arrow is on the picture Also can they be screwed together or do they need to be bolted with...
  7. G

    Suspended floor advice

    Hi All, We're in the middle of renovating a house built around 1905. The kitchen for the house is in an extension at the back, this extension is thought to be a later addition but still built in the same style as the main house (block foundations, matching brick walls, etc.). The kitchen...
  8. D

    Second opinion on some work, please

    Hi all, I’ve recently had some major renovation on our house with a number of walls removed and RSJs installed on the lower ground floor. The builders have now gone and building control signed off the work. There’s still a lot to be done, however. I need to fix some rotten joists by the front...
  9. H

    Joist Hangers on Joist supported on Joist Hangers...?

    As per title really - is it ok to hang joists on a joist which is already supported at either end on joist hangers? I'm looking to get rid of the ugly timbers which are below ceiling level under a flat roof which is part of an extension from many years ago (1980's). It's a bungalow and the...
  10. C

    Dodgy? Supporting a joist with a parallel joist?

    Hi all, I want to replace the banister around my landing upstairs with a couple of stud walls so I can essentially create a separate enclosed space upstairs. Part of the stud wall that needs building cannot be built directly on top of the existing subfloor, as there would not be enough space on...
  11. C

    Storage in Victorian roof space 3 x 2 ceiling joists

    Hi, Would be nice to put some boards down for storage in this Victorian roof space and be able to move around, store Christmas decorations and other stuff. It's at the back above my sons bedroom, accessed from a hatch on the landing - headroom in centre is about 5', there is no lighting. The...
  12. N

    Low clearance decking over patio

    I'm looking to deck over an existing patio, the main issue is the low clearance from the door sill. There is roughly 75mm from the patio tiles to underneath the door sill and 100mm to the top of the door sill. Therefore I would need to use thinner joists or lay them flat. Will it be a problem...
  13. D

    Loft conversion underslung joists

    Evening chaps, I've just started to DIY a loft conversion of a Victorian terraced property. The existing ceiling joists run from front to back of the property. I plan to undersling new floor joists from a steel beam so that they're 25mm above the existing ceiling. These have been specified by...
  14. B

    Upstairs floor straddles block wall and joists at different levels

    Hi all. I had a squeaky uneven upstairs bedroom floor that seemed to go downhill at one end. I removed old t&g floor to find the room straddled the wall between utility room and the garage. The top of the breeze blocks being higher than the top of the joists. So am now a bit puzzled as to how to...
  15. J

    Unable to Sister Joists Due to Utilities

    I've read a lot of really helpful stuff on her over the past three years as I renovate my 200 year old money-pit of a house.. I'm on to the bathroom, not a huge space, approx 3m X 3m. It has old hand cut elm boards of varying sizes and elm joists every 35cm. The board are beyond saving due to...
  16. T

    Fitting restraint strapping ceiling joists?

    Hi guys/gals, I’ve recently had my building regs drawings through from my architect for a loft conversion where the truss roof is coming down and new roof put up, it states “restraint strapping - ceiling joists and rafters to be strapped to walls and gable walls, straps built into cavity across...
  17. S

    Hearth

    I've dug out a hearth and would like some advice on installing some joists. Please see photos. As you can see the hearth has left a gap. The front wall of the hearth supports the cross joist. I propose the following 1. Keep the cross joist and leave all existing joists as they are 2. Add...
  18. gill0s75

    Loft Conversion Questions

    Hi all, just in the final phases of planning a loft conversion, I am not going to apply for building regs but will be building to the regs, the rationale being there is an extension at our house that wasn't signed off when built (long story) and therefore I will need to get indemnity insurance...
  19. C

    Advice please on bracing timber joists

    Hi there. I am building a treehouse. It will be fixed to two joists that will sit either side of a tree. I plan to tighten the two joists toward each other, either side of the tree, but am unsure what bolts / fixings are best to use. The tree is at least 450mm / 18 inches wide, then each joist...
  20. P

    Flat roof advice

    I appreciate things are hard to explain without pics but here goes. I have a square house with an attached square garage (just say it is the same size as the house) but this is set forward of the house by around 2 metres. I am building a small extension to the rear of the garage so back of house...
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