Paint
Types and Durability
| Types | Expected Lifespan
(years) |
Adjustment Factors |
| Water based tested to ASTM D5324: 1998 or equivalent.
with resin component:
|
Normal: 7
Acrylic-textured: up to 8 |
Existance of aggresive ground water*: -15% years
Hydrostratic head** exceeding system design: -10% years Test certificate from approved local testing authority (ie tested for fungus resistance to SS 345): +15% years |
| Solvent based to ASTM D5146: 1998 or equivalent.
with resin component:
|
Normal: 7
PU-textured: up to 10 |
|
100% solid polymer based coating (solvent free)
|
7 |
Source: Courtesy of Nippon Paint Pte Ltd
In the case of 2 or more conditions of adjutsment factor occur, the percentage of year shall be added to obtain the durability value
* Ground water varies in agressiveness depending on the location and in some areas may consist of highly agressive conditions (due to the presence of sulphates and nitrates). Agressive ground water can also be found in areas of close proximity to the sea.
**Basement waterproofing are generally subjected to a high hydrostatic head with the groundwater exerting a considerable force onto the system. Depending on the system, some of the membrance are designed for 50 m head and some for 30m head, and some may be less than that.
Note:
- Solvent base is not recommended due to solvent release into the air and is combustible.
- Oil based paint is normally refer to solvent based paint with alkyd resin component.
- PVA resin component normally used for interior application.
- Emulsion based paints are considered water based category.
- Enamel based paints are considered solvent based category.
- Those exposed for weathering/ UV: PU based is recommended.
- For use in basement carpark, normally epoxy base with aggregate is used.