Peel & Stick closed cell foam - suits roof, walls & more
1.07 sq/m - Insul-Layer 6mm
1.07 sq/m - Insul-Layer 6mm


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Car Builders Insul-Layer is a peel and stick closed cell foam designed to fit in tight areas. It offers acoustic and thermal insulation, prevents condensation and is very affordable.  

Our Insul-Layer will not rot, attract mold, is easy to cut and does not require the application of glue.


  • Light Weight
  • Easy installation - just peel off the release liner and adhere to surface.
  • Cuts with scissor and knife
  • Reduces heat transfer
  • Does not rot or deteriorate
  • Affordable


  • Roof skins 
  • Inside cavities
  • 1/4 panels
  • Doors
  • In-between trim panels to reduce vibrations/rattles (3mm Insul-Layer's main purpose)
  • Vans & campers (6mm 6.5M Roll is perfect for these)

(6.5M Roll is plain black, no branding)


Length: 1200mm or 6.5m
Width: 900mm
Thickness: 6mm
Weight (6mm): 0.6kg/sheet
Weight (3mm): 0.4kg/sheet
Temperature resistance (long term): -40°C to 110°C
Temperature resistance (short term): -40°C to 135°C
Customer Reviews

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Insul-layer Roof Liner

By: on 7 October 2021
Trying to up my game in the sound deadening department in my Nissan Patrol, I heard Car Builders were the way to go. Although the roof liner removal isn't easy, the insul-layer install with optional roller, was a breeze. The adhesive seems to stick very well, would recommend to others! Car Builders are the only ones I would trust with product to be straight against the heat of the roof skin.


Versatile insulation material.

By: on 28 July 2021
I ordered 6mm Insul-Layer to acoustically treat the doors of my 1996 BMW M3. I have put some butyl sound deadening on the larger panels inside the doors but I don't want to go overboard with this as, just for 1996, the M3 coupé had aluminium alloy doors and I don't want to kill the weight advantage with too much heavy deadener. What I do want to kill though, is reverberation and road noise. 6mm Insul-Layer is a great material for this, I have used it on the wheel arches of my daily driver. It cuts out higher frequency noise, is likely to be effective heat insulation and is very lightweight. You can really go to town with this, as long as you have the 6mm space to play with, which is generally not a problem. I am waiting for some tweeters I have on order before I can finish the M3 doors, but this product seems like a great asset to any car for noise and temperature control. I am sure I will be ordering more.


6mm insul-layer

By: on 13 June 2021
This is an excellent and very easy product to use. With very little skill in this area it came out looking great.



By: on 11 June 2020
Great product. Very forgiving. Sealed the top of the xt ute very well.


Quality as always

By: on 9 June 2020
Works very well, makes all the difference in older cars. Have enjoyed years of quality items from Many thanks


Insu-Layer 6 mm - Quiet Stuff

By: on 14 July 2019
Dramatic reduction in the level of noise from my wheel arches and rear panel, after installation to my Toyota Hiace Commuter. Suitable product for my sound insulation. Thanks "Car Builders" for offering this great product.