Tile Bedding Material
Types and Durability
| Description
Tile bedding |
Expected Lifespan
(Years) |
Adjustment Factors |
| Internal | ||
| Cementitious Adhesive (mix upon application with water or liquid admix to BS 5980:1980, i.e. Liquid Latex) or EN 12004:2001. Complying with requirements of type 1, class AA or class A in BS 5980:1980, with test certification for shear, tensile adhesion strength and mould resistance. | + water= <10 (no warranty given)
+liquid latex=10+(local warranty: 10 years) |
Constantly immerse in water or exposed to extreme moisture: -15% years
High possibility exposed to reactive chemical: -15% years Test certificate from local approved testing authority: +15% years |
| Cementitious Adhesive not to BS 5980:1980 or EN 12004:2001and/ or without certification for shear & tensile adhesion strength test. | < 8 | None |
| Organic Adhesive
Organic adhesive should comply with the requirements for class AA or class A in BS 5980:1980 or EN 12004:2001, for * type 3 (Dispersion/ cement adhesive)* type 5 (Reaction resin adhesive)with test certification for shear, tensile adhesion strength and mould resistance. |
5+ | Constantly immerse in water or exposed to extreme moisture: -15% years
High possibility exposed to reactive chemical: -15% years Test certificate from local approved testing authority: +15% years |
| Organic adhesive not comply with the requirements for class AA or class A in BS 5980:1980 or specified in EN 12004:2001 | < 5 | None |
| Epoxy based Adhesive*, to 5980:1980 or EN 12004:2001 with test certification for shear, tensile adhesion strength and mould resistance | 35+
Local warranty: 10 years |
Constantly immerse in water or exposed to extreme moisture: -15% years
High possibility exposed to reactive chemical: -15% years Test certificate from local approved testing authority: +15% years |
| Polyurethane based Adhesive, to 5980:1980 or EN 12004:2001 with test certification for shear, tensile adhesion strength and mould resistance | 30+
Local warranty: 10 years |
In the case of 2 or more conditions of adjustment factor occur, the percentage of year shall be added to obtain the durability value.
* Heavy duty adhesive (relatively more expensive), can be used for industrial floor.