Stud wall?????

[Richard C]

Would it be normal to have some kind of insulation in the stud wall?

If the stud wall divides a room with a w/c from another habitable room (but not the bedroom it’s in if an en-suite) then you must have min 25mm mineral wool sound insulation & the plasterboard must be either Wallboard 10 or Soundblock (not ordinary wallboard). Otherwise it’s not compulsory so it’s up to you; personally if it’s dividing bedrooms then I would sound insulate anyway.

 

[andy2306]

It seperates an upstairs bendroom from the bathroom, so i presume that i will need to insulate the wall with mineral wool, is that just the same stuff you insulate the loft with?

 

[Richard C]

Yes you will have to sound insulate; I did use 50mm cavity bats, it’s a bit of a grey area & our Building Inspector didn't have a problem with it but it may be worth a phone call to your LABC &, as I said, do not use ordinary wallboard, use Wallboard 10 or Soundblock.

Is this a refurbishment or are you forming a new bathroom? If it’s a new room with new drainage connections then I assume your aware that it’s notifyable work & should be inspected?

 

[andy2306]

No im not forming a new bathroom, just making it slightly bigger, the previous owner had left about a foot next to the chimney breast in the bedroom, which creates a small alcove which wont even fit a vac in and looks stupid, so initially it was for cosmetic reasons and i was just going to batton out the alcove when i had the bedroom skimmed, however we need a new bathroom and currently its like a corridor, so an extra foot width and a lower cladded ceiling will make it much more asthetically pleasing.

I will be moving the plumming around in the bathroom, and probably replacing the wastes that are already in situ, but that will be about it?

 

[Richard C]

Sounds OK on the drainage side, just make sure things in are accordance with Part H & manufacturers design guides; depending on who did the work & how long ago, it may not be! Does the room currently have an extractor fan?

 

[andy2306]

No extractor fan at the moment, but it soon will have.

 

[Richard C]

Current regulations require a fan in new or refurbished bathrooms; you can DIY but it gets a bit complcated with notification & inspection & by far the easiest route is to get one wired by a Part P registered spark (you will need to produce a compliance certificate in the future) even if you do the mechanical installation yourself.