Basement Floor Screed
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Types and Durability
| Description
Screed |
Expected Lifespan
(Years ) |
Adjustment Factors |
| Cementitious Screed
Direct finished concrete slab to BS 8204: 2000 part 1 & 2. Cements requirement to ASTM C150. |
35+ | Constantly immersed in water or exposed to excessive moisture: -15% years
Addition of water reducing admixture to ASTM C 494: 1999 or BS 5075: Part 1: + 15% years |
| Proprietary Screed
Proprietary or preblended polymer modified topping. Thickness and installation in accordance with manufacturer’s recommendation. Includes metallic non-ferrous aggregate and epoxy-reinforced topping. |
25 | Constantly emersed in water or exposed to excessive moisture: -15% years
Addition of water reducing admixture to ASTM C 494: 1999 or BS 5075: Part 1: + 15% years |
| Cementitious screed or proprietary screed not to relevant standard or not installed according to manufacturer direction. | < 10 | None |