Comprehensive technical specifications for professional floor screed installation, quality control, and performance requirements based on British Standards and 38 years+ of field experience.
Surface regularity is defined as the limitation of deviation of the surface beneath a straightedge laid flat on the surface. It measures the “waviness” of the surface and is critical for floor finish performance and longevity.
High quality finishes requiring smooth surfaces
Typical Applications:
Standard commercial and residential applications
Typical Applications:
Utility areas and basic applications
Typical Applications:
Minimum: 25mm
Recommended: 40mm nominal (±15mm tolerance)
Standard: BS 8204 Part 1
Applications:
CIRIA Report 184 recommends 35mm nominal (±10mm tolerance)
Minimum: 20mm
Recommended: 45mm minimum design thickness
Standard: BS 8204 Part 2
Applications:
Design thickness accounts for substrate deviations
Minimum: 75mm
Recommended: 75-100mm depending on loading
Standard: BS 8204 Part 1
Applications:
Thickness increases with softer insulation
Minimum: 10mm
Recommended: 150mm Preferred
Standard: BS 8204 Part 2
Applications:
Thicker sections reduce curling risk
1 part Portland Cement to 3-5 parts sand
Standards Compliance:
Typical Strength:
Applications:
General purpose screeding applications
Factory blended with polymer additives
Standards Compliance:
Typical Strength:
Applications:
Enhanced performance applications
High-flow consistency, self-smoothing
Standards Compliance:
Typical Strength:
Applications:
Large areas, complex layouts, thin applications
Flowing screed specifications represent cutting-edge floor construction technology. The technical parameters below will be populated with Spencer Warner’s authentic specifications from 38 years+ of field experience and British Standards Committee expertise.
Technical mix design specifications
Ready for Spencer’s specifications:
Cement types, aggregate gradations, admixture dosages, water/cement ratios
Strength and durability specifications
Ready for Spencer’s specifications:
Compressive strength requirements, flexural strength, surface regularity tolerances
Installation and environmental requirements
Ready for Spencer’s specifications:
Temperature ranges, humidity requirements, thickness limitations, curing protocols
Testing and acceptance criteria
Ready for Spencer’s specifications:
Testing frequencies, acceptance tolerances, remedial procedures, compliance standards
Tolerance:
Measurement: Core drilling verification
Standard: BBS 8204 requirements
Tolerance:
Measurement: Level survey measurements
Standard: Datum level compliance
Tolerance:
Measurement: String line verification
Standard: Perimeter accuracy requirements
Tolerance:
Measurement: 2m straight edge testing
Standard: BS 8203/8204/5385 Part 3
Function:
Shrinkage crack control, impact resistance
Applications:
Bonded, unbonded, floating constructions, UFH systems
Function:
Industrial floors, high traffic areas
Applications:
Bonded, unbonded, floating constructions, UFH systems
The Screed Scientist® Standards
These specifications represent field-proven requirements developed through 38 years+ of professional experience, 2,900+ successful projects, and British Standards Committee expertise.
Professional Services
Expert consultation available for specification development, quality control, and technical problem resolution.
Comprehensive guide to BS 8204, BS EN 13813, and DIN 18560 standards
Professional testing protocols and quality verification procedures
Practical installation techniques and professional methods
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