Notches or Holes, clip or not to clip?

[FatAlan]

Appart from the building regs specification on the size and positioning of notches and holes in joists is there a best practice on what to use? Is it just the case that notches are used in place of holes due to the cable positioning being outside that prescribed for holes. Are there any issues with not clipping cables under floor boards? I say this as when for instance you install down lights it seems prudent to have a fair bit of slack left for future work / fittings etc.

 

[chris murphy]

I would think ( and its just a hunch) that the "risk of reaction" would be greatest when the fire cement was wet, but reduce greatly once it was it was dry?

My previous home had a wood burner so I've used it quite a bit in its correct capacity but would never have thought of using it instead of polyfilla! Interesting thread!

Hello Pete E,

What a good point !

I am sure that you are correct about the Fire Cement being `reactive` when wet and then not when it has dried.

When dry there should be nothing to enable a `chemical reaction` between the Fire Cement and the Cable insulation.

In hindsight / after reading your comments it should have been more obvious to me - but I had not given any thought about the Fire Cement becoming `inert` when it dried.

Thanks for your reply Pete.

Regards,

Chris