Peel & Stick closed cell foam - suits roof, walls & more
1.3 sq/m - Insul-Layer 6mm
1.3 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 mould and is easy to cut and apply.

Clearance Insul-Layer available here.

NOTE: For all inverted or vertical applications that will be covered in carpet/fabric (IE having more weight added to the surface of the Insul-Layer), we recommend applying our upholstery grade Spray Adhesive rate at 120°C. You can learn more about the foam adhesive and application here.


  • 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)



What are the rules for applying a peel & stick product?

It is vitally important when laying a peel & stick product that the surface is thoroughly cleaned to remove any grim or dirt. We use a wax and grease remover. If you use a product such as methylated spirits or turps, as these are oil based, they will leave a residue that can affect the bond. Use a isopropyl alcohol (wax and grease remover) to remove this film.

Peel & stick products adhere well to metal surfaces, however if you are sticking the product to porous or rough materials, such as factory bitumen sound deadener, the product will require additional Spray Adhesive

Peel & stick products should not be stretched when applied to a surface as the material will eventually want to 'pop' back.

You need to ensure that peel & stick products are thoroughly rolled down, with pressure applied across the entire product to ensure that it has firmly adhered to the surface. We use our Application Roller.

If you find an air bubble, you should pierce the bubble to release the trapped air and roll the product down firmly.

We recommend using additional spray adhesive when using products in inverted positions or if you are directly adding further weight onto the product, such as glueing 4-way stretch carpet to the product's surface.


Length: 1400mm or 6.5m
Width: 950mm or 1000mm
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 6mm

By: on 16 March 2024
My first time using any products like this. Very easy to use after a little practice on a spot which wont be seen. Worked a treat!


Quality product, easy to apply

By: on 18 August 2023
Used it on the roof and in tighter floor areas. Easy to use. Very happy with the result.


Great quality product

By: on 1 August 2022
Used this product by cutting into 2cm strips to stick around the stock van panels to reduce rattle and noise until I can carpet the back of the van. easy to cut to size and install


Awesome service

By: on 11 July 2022
Awesome product, my BMW is a lot cooler after installing this in my roof. I live in Darwin so the heat is fierce at times. My order was missing the wooden roller that I ordered, but upon informing them it was immediately dispatched with appooliges. Great serve fantastic products..


3mm insu-layer

By: on 22 February 2022
Works well even on inverted surfaces


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.