joists | Page 3

joists

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  1. R

    Help with location of holes in joists

    Hi Bit of clarification please. When I want to drill a hole in a joist it says in the building regs book that the hole should be between 0.25 and 0.4 x the span. so is the span the entire length of the joist from front to back of building or is it between the supports? ie in the kitchen i'm...
  2. D

    wiring through joists.

    Morning All... Another quick question I'm sure one of you will have the answer to... I am going to be running cables under my floorboards but as the house is over 100 years old this has been done many times before. The joists have already been notched out but not to the latest depth as per...
  3. S

    Drilling through joists

    Hi all i need to drill a lot of holes through joists. Just wondered what people thought was the best tool flat wood bit or auger ? Thanks
  4. M

    Board cutters

    Somebody mentioned these to me the other day. Silverline do one for £30 (plus arbour) with 5 plugs. Anybody use one and what are the advantages and disadvantages please?
  5. B

    Downlighters - joists - best thing to use to cut out

    Installing 5 downlighters down the centre of a hallway - the downlighters cant be moved to one side - need to go central but I am just catching the joists - about 1/4 of the hole is covered by joist - whats the best tool to notch out this part of the joist - it's pretty hard wood as the house is old
  6. S

    cordless sdsd drills

    need to replace my dewalt 24v sds (2nd in 2 years) has been ultra-unreliable, firsts was repaired under warrenty, then packed up just out of warrenty. so i brought the same again body only which has caused me loads of problems from that i have been repairing my self. I dont think i want another...
  7. J

    Downlight installatio near joists

    Hi, I am fitting a set of 15 kitchen downlights (50w) but have made the classic mistake of cutting out some holes right next to the joists. The manufacturers intructions dont actually mention distance from joist, just says keep 100mm from insulation material, however I have a concern over the...
  8. S

    Help with installation methods please.

    Currently doing a rewire on an old house. Loft has 50mm joists at right angles to a large central joist 200mm. So I can clip cables along the centre of the loft with no problem. Using installation method 101 it would seem that I can lay the cables out to light fittings between the joists on...
  9. S

    drilling joists

    for the above, do you's use a dedicated angle drill or an angled attachment for your cordless drill to fit easily between joists?
  10. A

    Pozi Joists.

    Usually found in timber frame builds. They are the ones with a bit of 50x50mm batten top and bottom with metal webbing down the sides.Just wondering what you boys do? There is no joists to clip your cables to?! P clips maybe? Some people don't care about their first fix but I always like it...
  11. R

    Existing cable routes through joists etc

    I am rewiring a property built in 1953. Where possible all new cables have been passed through holes drilled in the permissible areas of the floor joists however there are some areas where this is not practical. Notably there are some very large notches cut out of some joists (way bigger than...
  12. P

    Notches in joists

    So I go to way a job up today at a flat,.....concrete ceilings was the first disappointment the to make matters worse there had been sister joists put in for extra support so i do not have enough room to get my drill in, so got my onsite guide out and had a look on the regs regarding notches...
  13. N

    Protect joists near DB?

    Hi, I have my assessment on the 23rd June and I've done my CU change which is mounted direct to brick garage wall however directly above is the garage roof which is joist and then a timber t&g deck above. The timber is about 50mm away from the DB. Do you think I should plaster board this? Fire...
  14. B

    Plasterboard ceiling fixing solutions

    I intend replacing a pendant light fitting with a new light and fan unit (heavy weight), however the screws of the pendant were only fixed into plasterboard and not into the joist because the wiring exited the plasterboard in between the two joists. The plasterboard is not going to support the...
  15. S

    Requirements for drilling holes in joists

    Could anyone point me in the right direction for requirements to drilling joists? eg. distance out from end of etc... Have used a guidance sheet before but really dont have the time to trawl google searching for regs. Cheers
  16. W

    Ceiling Joists

    What is the best way to find the ceiling joists when installing lights?
  17. G

    Steel plates to cap off notched joists

    Can anyone tell me where I can buy these, cannot locate them anywhere...
  18. A

    New Build Installations

    I went to quote for fitting fire rated downlighters in a new build property tonight, but the customer is looking for them to replace existing pendants and batten holders. Does anyone know if these are normally fitted adjacent to joists in a new build property? Didn't think about it till I...
  19. E

    Powerful SDS for drilling joists

    Hi guys I have been using a Bosch 710w corded SDS drill for about 3 months now for drilling joists but am finding on older joists it just keeps getting stuck and the clutch keeps coming in. I am now looking at buying a better quality SDS Plus to use with a 25mm auger bit. Does anyone use a...
  20. B

    Mechanical protection through joists

    where the other measures of 7671 522.6.5 are not used and a cable passes through a joist less than 50mm from the top, the cable must have adequate mechanical protection against nails, etc. Please tell me, does this requirement only apply to the parts of the cable passing through the joist? or...

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