Finishing Techniques for aluminium windows and doors
There are different kinds of surface finishing for aluminium. The most popular finish types for aluminium profiles are as follows:
- Powder coating
- Anodizing: A chemical and electrical process combined. It thickens the oxide film for additional protection against corrosion
- Mechanical finishes: Mechanical Finishes are used for adding a texture to the surface.
Why add a finish to aluminium extrusion
There are three main reasons for applying an additional finish to your aluminum extrusion:
- Environmental Protection
- Metal Preparation
- Enhanced Appearance
Finish Types
Finish options
| Finish | Explain |
| Matt | 30 GU |
| Satin | 72 GU |
| Coatex | Textured coating layer |
| Hi Gloss | |
| Metallic | |
| Anodization | Natura, Gold, Bronze, Black |
Polyester Powder Coating
The powder coating is a high-performance thermoset coating specifically designed for architectural systems. Powder coating is a very popular finish and is a completely dry paint that does not contain any solvents.
Powder coatings can be applied horizontally or vertically without noticing any difference in appearance.
Gloss levels
| Gloss Level | Explanation |
| Matt (30% +⁄ -5%) | A matt finish due to the low gloss level is very good at concealing surface imperfections. Due to the textured finish the surface is more difficult to clean than a surface with a higher gloss level. |
| Satin (65% +⁄ -5%) | A satin finish is not as reflective as the gloss finish and because of this is less likely to show any surface imperfections. Satin finishes also provide a good surface for cleaning and resisting abrasion. Unless stated otherwise this is the standard finish supplied. |
| Gloss (80% +⁄ -5%) | A highly reflective smooth surface. Gloss surfaces due to their highly reflective appearance tend to highlight surface imperfections. |
Conventional Paint Finishes
- Pure White, RAL 9010
- Traffic White, RAL 9016
- Signal White, RAL 9003
- Signal Black (RAL 9004)
- Jet black (RAL 9005)
- Anthracite grey (RAL 7016): One of the most popular colour choice for windows and doors.
Anodizing
A chemical and electrical process combined. It thickens the oxide film for additional protection against corrosion
