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IKO 1-in x 4-ft x 8-ft Polyisocyanurate Insulated Sheathing

Article #51207024 Model #327-00004 Format 1"x4x8'
This item is not currently available for immediate purchase, but can be ordered by visiting the selected store.
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Description

  • Reduce energy loss - lower heating and cooling costs
  • Lightweight and easy to install
  • Poly-ISO has the highest R-value of any rigid foam board insulation
  • Controls sound - Enerfoil reduces noise, adding quiet comfort to the building enclosure

Product specifications

Actual Length(cm)
243.84
Actual Length(ft)
8
Actual Thickness(cm)
2.54
Actual Thickness(in)
1
Actual Thickness(mm)
25.4
Actual Width(cm)
121.92
Actual Width(ft)
4
Common Length(cm)
243.84
Common Length(ft)
8
Common Thickness(cm)
2.54
Common Thickness(in)
1
Common Thickness(mm)
25.4
Common Width(cm)
121.92
Common Width(ft)
4
Coverage Area(ft2)
36
Coverage Area(m2)
3.3444
ENERGY STAR Certified
Yes
Faced/Unfaced
Faced
Fits 2 x 4 Walls
Yes
Fits 2 x 6 Walls
Yes
For Use in Attics
Yes
For Use in Basements
Yes
For Use in Ceilings
Yes
For Use in Crawlspaces
Yes
For Use in Doors
No
For Use in Duct
No
For Use in Electrical
No
For Use in Floors
No
For Use in Garage Doors
Yes
For Use in Masonry
Yes
For Use in Plumbing
No
For Use in Vents
No
For Use in Walls
Yes
For Use in Windows
No
Formaldehyde Free
No
Insulation Type
Polyisocyanurate
Maximum R-Value
6.2
Package Quantity
1
Package Weight(kg)
2.798712
Package Weight(lbs.)
6.17
R-Value per Inch
6.2
Series Name
Enerfoil
Sound Barrier
Yes
Vapor Retardant
Yes
Warranty
None

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Article #52075027

Can this be used in between the floor joists of my cottage which is exposed to the exterior? Eventually I would be putting a skirt around the cottage to prevent cold air from cooling the floor.

Asked by: Rob_v
Yes. It is an excellent barrier for cold or heat. I used it between rafters to reduce heat in the attic. 
Answered by: ZeeTee
Date published: 2021-08-14

can enerfoil be installed in layers in walls?

Asked by: noel 74
I used it for acoustical insulation and so layers will only improve on noise issues. 
Answered by: ZeeTee
Date published: 2022-10-24

Will PL300 work as an adhesive with the enerfoil and/or enerair?

Asked by: Anonymous
Hi Jack - Installation details for Enerfoil and Enerair can be found in our Building Envelope Technical Specifications Manual at https://www.iko.com/comm/technical_documents_categories/building-envelope-technical-specifications-manual/ Unfortunately, we cannot offer specific advice regarding proposed usage and would advise contacting a licensed construction professional.
Answered by: IKO Roofing
Date published: 2020-11-04

I need to put a layer rigid board insulation on my internal solid masonry walls (100 year old house) and then a layer of rock wool. Would this work? If so, what fasteners should I use to secure it to the wall?

Asked by: Anonymous
Installation details can be found in our Building Envelope Technical Specifications Manual ; https://www.iko.com/comm/technical_documents_categories/building-envelope-technical-specifications-manual/ Unfortunately, we cannot offer design advice regarding proposed usage and would advise contacting a licensed design professional.
Answered by: IKO Roofing
Date published: 2020-10-23

Can this product be layered ( stack up to obtain r value ) and use on attic ? Thanks

Asked by: Richard DIY
Hi Richard - We would not advise the use of this product within an attic space.
Answered by: IKO Roofing
Date published: 2020-11-29

Is this fire retardant? Can I use it under cement boards in an outdoor built in bbq to protect the wood from the heat?

Asked by: A bunny
We do not advise this for placement in relation to an outdoor BBQ build as it is not appropriate for the situation.
Answered by: IKO Roofing
Date published: 2020-07-29

Can it be used on an exterior wall under vinyl siding?  Also, I’ve read that polyiso products lose significant r value in cold temperatures but it varies between different products.  Do you have any cold temperature test data on this product?  Thanks.

Asked by: Rolley
This product can be used under exterior wall vinyl siding but there should be no interior vapour barrier. If there is such a barrier, we suggest using IKO EnerFoil instead. While the polyiso loses some r value as temperatures cool, this process does not start until -18C and has a loss of 10 to 12%.
Answered by: IKO Roofing
Date published: 2023-06-20

1) What is the compressive strength? 2) Can I pour concrete on this?

Asked by: SurveyorGeorge
The PSI of this product is between 16 - 18 PSI. If using under concrete, you would need to place a vapour barrier under the insulation to avoid moisture coming into contact with the insulation. The thickness of the concrete and the conditions of what will be placed on top of it (differing between a garage or a basement) cannot exceed the 16 PSI rating so you will need to calculate these rates. However, presently we have not tested insulation for under slab concrete application so we are unable to make any product guarantees as to performance or warranty associated with this form of application.
Answered by: IKO Roofing
Date published: 2021-03-16
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IKO 1-in x 4-ft x 8-ft Polyisocyanurate Insulated Sheathing is rated 5.0 out of 5 by 4.
Rated 5 out of 5 by from Home Reno Everyone on team manning has done so well for all of my Reno needs!
Date published: 2020-10-08
Rated 5 out of 5 by from great product with best R-value I have not been able to find another readily available sheathing material with the R-value over 5. My plans called for a minimum of 5.5 this one has over 6 for 1 inch. I also used aluminum tape over the nails and sheathing tape over the seams. the only downside - the edges are NOT interlocking as some other sheathing - in some cases i uses a high density spray foam. i also got this at approx 19.20 per sheet on sale - the best value for money.
Date published: 2018-09-26
Rated 5 out of 5 by from Good product Good choice for someone that wants to increase thier wall r value by 6.1 with minimal additional work and expense. Only 1" needed, vapour barrier built in, drywall right over the stuff, no strappinh of walls needed. Worked good for me.
Date published: 2017-11-11
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