Acoustic Wall Panel + Extra Insulation

[ray.birch]

Good evening all,

We have a small north-facing downstairs room which we have turned into an office. On one of the external walls, we’ve been considering putting up a few of the wooden acoustic panels for both aesthetic and acoustic reasons (the room turns into a bit of an echo chamber if on a call).

Given it’s north-facing and wanting to try and be a little more energy efficient, I’m wondering about putting some 25mm celotex/kingspan PIR against the wall first, and then the acoustic panelling over the top. My question is whether this:

A) Seems reasonable - and if there’s anything that may be worth noting before ploughing ahead?

B) How best to secure the PIR and Acoustic Panelling? For additional acoustic performance, the panel manufacturers recommend battening out the wall and using rockwool between the battens, but I’m prioritising thermal efficiency here over acoustic. Given this, my understanding is that using battens (which I could then screw the panels into) would decrease the thermal performance, relative to just covering the wall with PIR entirely? One thought I do currently have is using black 100mm washer head timber screws that would screw through both the panel, and the PIR into the wall - does that sound reasonable?

Many thanks in advance as always!!

 

[Wayners]

Just stick kingspan to wall with foam.
A few mechanical fixings through.
Stick the acoustics panels on with CT1 or stixall.

 

[ray.birch]

Thank you so much for the quick response @Wayners ! I'm now considering upping the insulation on this one wall to 50mm, or alternatively 50mm insulated plasterboard (given this is all before it is decorated, I may as well go for some thicker stuff now).

Given we're intending to have the acoustic panel over the top of this, would you suggest one is better than the other at all for these purposes?

The wall the PIR/PB is going on is an exterior, cavity wall. Do I need to be concerned at all about letting the wall "breathe"? I just want to make sure I don't make any problems by doing anything!

Lastly, with regards to mechanical fixings, are there any that you would recommend (or stay away from)? From reading with respect to the metal fixings, I'm unsure if I should be concerned about any cold bridging (but seems like I may be overthinking this?)

Many many thanks again for all the support!

 

[Wayners]

Mechanical fixings are like this.

I fit acoustic panels. They are thick coloured material coated foam you hang on walls.
Is that the sort you want?

 

[ray.birch]

Again, thank you Wayners - really appreciate the guidance. (I'm a very keen DIY'er, but as a bit of a perfectionist and having never done this before, I apologise if I'm asking tedious questions!!).

The Acoustic Wall Panels that I'm considering are these: https://woodupp.co.uk/product/akupanel-240/?attribute_pa_colors=classic-oak-black-felt

To your point, it's probably a bit inaccurate to refer to them as just acoustic panels (and there's certainly a bit of form over function here). Ultimately, it's mainly to try and keep the family warm if one of them is working in the study whilst looking reasonable at the same time!

Those mechanical fixings look spot on - thank you. Any thoughts on whether I can mess anything up by putting PIR on the wall? (i.e. reducing ability of the wall to "breathe"?)