Special Finishes

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Tetraguard is a single pack catalysed polymer incorporating hollow thick walled thermal beads, designed to provide exceptional thermal and insulation properties on galvanised iron, aluminium, steel, fibreglass, etc.


  • 1 mm filmbuild provides R Factor of 2.5
  • 2 mm filmbuild provides R Factor of 3.4
  • Acoustic control
  • Prevents condensation
  • Sound proofing vehicles, boats, caravans
  • All B.S. or designer colours


All industrial and commercial areas that require thermaland condensation control - on marine, automotive, cars, boats, caravans, steel, aluminium, etc.

Physical Properties:

Form Catalysed Polymer Thermal Beads
Hardness MOHS Scale 6-7
Melting Point 1600° C


Laboratory Trials - Tetraguard Insulated Coating:

A number of tests were carried out by our laboratory;

Test No.1 Standard 2 chamber heat transfer apparatus

Ambient in laboratory

Tetraguard coated top chamber

Bottom chamber (heat source)




Test No.2 Standard 2 chamber heat transfer apparatus 24 hour run heat input 40 watts

Chamber (a) as for Test No.1 - Tetraguard @ 600 microns thickness

Chamber (b) lined with insulating batts (R2.5)

Variations above ambient:

Chamber (a) 1.1 to 1.6°C

Chamber (b) 2.0 to 3.0°C



The summary of these tests showed that the Tetraguard coating @ 600 microns had better insulation by 1°C to 2°C than the insulation batts.

Application to Steel, Fibreglass, Aluminium:


Apply 1 coat of Tetracure P10 Primer @ 8-10 m² per litre coverage (diluted 50% with Tetrasolve Solvent).  Allow Tetraguard 30 minutes to cure.

Apply 2-4 coats of Tetraguard @ 300 microns wet filmbuild per coat.  Use as supplied and apply using pressure pot system intermitting each spray pass by 50% to achieve desired film thickness.  For thermal insulation a minimum of 300 microns should be achieved.

Clean Up:

Use Tetraolve Solvent or Brushwash


2.5 m² per litre @ 400 microns W.F.B.

Dry Film Thickness:

300 microns per coat.  Two coats recommended

Dry Time:

Touch 30-60 minutes, Hard 8-24 hours


1-4 hours, depending on ambient temperature.

Health & Safety:

Wear protective overalls, goggles and gloves.  maintain adequate ventilation at all times.  When spraying, use approved respirator with organic vapour cartridge.

Eye Contact: Flush with copious amounts of water, or dilute boric acid solution and seek immediate medical aid.
Skin Contact: Wash thoroughly with soap and warm water.
Warning: Keep away from sparks and open flame.  Smoking should not be permitted in working areas.  Extremely flammable liquid.  Keep out of reach of children - avoid breathing vapours - contains aromatic hydrocarbon solvents.
Dangerous Goods: Flammable Liquid, 3A
Warning: Observe new Occupational Safety & Health Instructions (O.S.H.)


Warranty / Liability

Special Finishes (NZ) Ltd provides all the enclosed information in good faith but without warrantee and is to assist your application. However the use of this product being used is beyond their control. The manufacturers can accept no responsibility whatsoever for any damage or failure arising from its application or use. It is totally the responsibility of the user to insure that the product is suitable for its intended use.