A while ago I remember seeing some great photos someone had posted showing their ceiling insulation between web joists prior to boarding.

I am just about to start this job & seeing the photos again would be so helpful.

I have tried to find with lots of searches but to no avail.

Anyone remember this?

Thanks

 

Do you mean sound proof insulation?

 

Not posted before but this is mine

 

That's it Dave,

Thank you.

I have 100mm rockwool acoustic slab insulation.

I was wondering if I needed to prevent it sagging by supporting it to sit snug to the underside of the boards above?

I can do this by stapling nylon tape (the sort that comes with pallets of bricks) to the underside of the top wood part of the web joists at intervals to hold it in place.

I think I can see you have put lengths of board to hold yours in place

Should the ducting (quiet vent radial) for the MVHR be above or below the insulation?

Yes I used (cough) old bits of pallet wood slotted through the joists to hold the insulation in place. I wanted to keep the insulation from touching the plasterboard, just in case one day I need to add extra cables and I will stand more chance of threading a wire through if the insulation is not down on the plasterboard.

 

I put my insulation above the mvhr vents

Thanks for the info Dave.

Very much appreciated.

I will have a go at the insulation tomorrow.

I am starting to itch already.