PIR Insulation

[Bristol_Rob]

I'm about to buy some 100mm PIR insulation.

Has anyone researched this recently and have any recommendation of suppler (that delivers to the south west)?

I'm looking for best value.

I believe most PIR to be of similar quality. Especially as it's for a shed!

TIA

 

[Phil Pascoe]

https://www.secondsandco.co.uk/are good if they happen to have what you want in the quantities you need it. I did my garage/workshop with 95mmm stuff when I realised there was a single block wall between the bedroom/kitchen and the garage.

 

[Bristol_Rob]

https://www.secondsandco.co.uk/are good if they happen to have what you want in the quantities you need it. I did my garage/workshop with 95mmm stuff when I realised there was a single block wall between the bedroom/kitchen and the garage.

Thank you - that's a good recommendation.
I'll check them out

 

[Housey210]

I'm about to buy some 100mm PIR insulation.

Has anyone researched this recently and have any recommendation of suppler (that delivers to the south west)?

I'm looking for best value.

I believe most PIR to be of similar quality. Especially as it's for a shed!

TIA

how many sheets?

 

[MorrisWoodman12]

Also try Materials Market | Builders Merchant, Building Supplies & Materials Store
Found them to be a good price and reasonable delivery. Just last week bought 6 off 25mm and 6 off 120mm Celotex.
Martin

 

[Bristol_Rob]

how many sheets?

15No. of (2.4 x 1.2m)

 

[Housey210]

have you considered jablite as an option?

 

[Bristol_Rob]

have you considered jablite as an option?

No, tell me more?

What are the pros & cons for this?

 

[Housey210]

https://www.homelogic.co.uk/what-is-jablite-insulation-and-what-does-it-offer.
depends really on your structure and what you are doing in there. If you are cutting to fix between ceiling joists and studs both will have to be a snug fit, both will impact on thermal resistance of wiring. I have used both, celotex I cross battened to hold in ceiling joists and jablite I plaster boarded whole ceiling with white hardboard on walls as jablite not good with heat or fire. Of the wiring I brought that to the surface in plastic conduit. Of the ceiling I do prefer it fully boarded. Never had a fire in garage. Both do a job one being cheaper than the other.

 

[joncooper27]

Sometimes you can get good prices at your local builders merchant depending on your relationship with them

 

[Fitzroy]

Jablite(expanded polystyrene) and PIR are different materials. PIR is a better insulator, roughly 70mm PIR equals 100mm EPS.

100mm PIR is a lot of insulation! If your shed is only heated for short periods when you are in there I expect it’s overkill, if constantly heated then perhaps it will pay for itself in time. I put 70mm of Rockwool in my shed wall/roof/floor and this has made it usable all year with a small fan heater for the first 30mins and just my bodyheat after that.

If you go for EPS be aware of any pvc electrical cables as the PVC and EPS can interact and result in cable or insulation damage.

Fitz.

 

[Bristol_Rob]

Jablite(expanded polystyrene) and PIR are different materials. PIR is a better insulator, roughly 70mm PIR equals 100mm EPS.

100mm PIR is a lot of insulation! If your shed is only heated for short periods when you are in there I expect it’s overkill, if constantly heated then perhaps it will pay for itself in time. I put 70mm of Rockwool in my shed wall/roof/floor and this has made it usable all year with a small fan heater for the first 30mins and just my bodyheat after that.

If you go for EPS be aware of any pvc electrical cables as the PVC and EPS can interact and result in cable or insulation damage.

Fitz.

Good to know.

All my electrical cables will be surface mounted. Nothing will be in the walls, floors or ceiling.