4.86 from 1082 reviews

Natural Cork Filler for Door & Window Insulation - Auro 396

An ecologically alternative to construction foam for window and door installation: fills cavities between brickwork and window and door frames providing good sound and heat insulation. Not to be used as wall filler (Use Auro 329 Natural Wall filler if you do) but more as caulk for windows and gaps. Suitable for interior and exterior use. Vegan & Cruelty Free. Made by Auro Paints UK.

The right gun for Auro 396
Hilka Pro Mortar & Grouting Gun Set

Auro 396 comes in a clip-ended tube that needs an open barrel gun rather than a standard cartridge gun. The Hilka takes the tube straight in: cut off the clip, drop it into the barrel and screw on the end cap with the nozzle.

  • Takes the Auro 396 tube
  • Metal ratchet handle for steady pressure
  • Nozzles, spare plunger and filling scoop included
£27.60View product

Why us? We help people choose genuinely safer paints and finishes, without the greenwashing. We’re an independent shop, and we only recommend products we truly believe in, or have tested and tried.  For us, this is personal: better indoor air quality matters. Don't just take our word for it, read our Reviews.  What is a natural paint?

Info: Natural Cork Filler for Door & Window Insulation - Auro 396

An ecologically alternative to construction foam for window and door installation: fills cavities between brickwork and window and door frames providing good sound and heat insulation. Apply the solvent-free cork granulate delivered in plastic tubes with an open barrel gun such as the Hilka Pro Mortar & Grouting Gun (available on our site), although in some cases application with a spatula is possible.



Cut off the clip and equip the caulking gun with the plastic tube. Screw on the closing cap with the nozzle, cut at an angle. Fill the joints evenly with the cork filler and smooth the surface with a spatula.



As purveyors of Auro paint at Greenshop Paints, our pride is in our comprehensive inventory of natural paint.

Through gaps should be closed off on one side, e.g. using cover strip or suitable back filling. The sealing is breathable and can also be overcoated, e.g. outdoors to avoid UV influence and greying.

N/A

Water, natural latex, cork, xanthane, rosemary oil, benzisothiazolinone, sodium pyrithione.

Downloads and documents

Technical data, safety data and application guidance for Natural Cork Filler for Door & Window Insulation - Auro 396. All open in a new tab.

Technical data sheet

Safety data sheet (SDS)