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Groundwork and Structural2 min read

Screed and Concrete Floor Guide for London Homes in 2025: Most Specified Floor Screeds, Polished Concrete, Micro-Cement, and London Screed Installation Costs

FLOOR SCREEDS ARE ONE OF THE MOST TECHNICALLY SPECIFIED ELEMENTS IN LONDON RESIDENTIAL RENOVATION IN 2025 — THE CHOICE OF SCREED TYPE, THICKNESS, MIX DESIGN, AND INSTALLATION METHOD DETERMINES THE FLATNESS OF THE FINISHED FLOOR, THE COMPATIBILITY WITH UNDERFLOOR HEATING, THE DRYING TIME BEFORE FLOOR FINISHES CAN BE INSTALLED, AND THE STRUCTURAL ADEQUACY OF THE FLOOR CONSTRUCTION. THE LONDON RESIDENTIAL SCREED MARKET IN 2025 HAS SHIFTED SIGNIFICANTLY FROM TRADITIONAL SEMI-DRY SAND-AND-CEMENT SCREEDS TOWARDS FLOWING ANHYDRITE LIQUID SCREEDS (THE MOST INSTALLED SCREED TYPE IN LONDON RESIDENTIAL RENOVATION IN 2025 FOR NEW GROUND-FLOOR EXTENSIONS AND GROUND-FLOOR REFURBISHMENTS) — PRIMARILY BECAUSE FLOWING LIQUID SCREEDS CAN BE INSTALLED AT 40-50MM THICKNESS OVER UNDERFLOOR HEATING PIPE RATHER THAN THE 65-75MM TYPICALLY REQUIRED FOR SEMI-DRY SAND-AND-CEMENT SCREED OVER UNDERFLOOR HEATING — SAVING FLOOR BUILD-UP HEIGHT IN LONDON RESIDENTIAL EXTENSIONS WHERE BUILD-UP HEIGHT IS ALWAYS AT A PREMIUM. THE THREE MOST COMMON FLOOR SCREED PROJECTS IN LONDON RESIDENTIAL RENOVATION IN 2025 ARE: FLOWING ANHYDRITE LIQUID SCREED OVER UNDERFLOOR HEATING (THE MOST COMMON SCREED PROJECT IN LONDON RESIDENTIAL RENOVATION IN 2025 — WHERE A FLOWING ANHYDRITE LIQUID SCREED IS BEING POURED OVER UNDERFLOOR HEATING PIPE IN A NEW REAR EXTENSION GROUND FLOOR SLAB); POLISHED CONCRETE OR MICRO-CEMENT DECORATIVE FLOOR FINISH (THE SECOND MOST COMMON DECORATIVE SCREED/CONCRETE PROJECT IN LONDON RESIDENTIAL RENOVATION IN 2025 — WHERE A POLISHED CONCRETE OR MICRO-CEMENT FINISH IS BEING APPLIED TO AN EXISTING CONCRETE SLAB OR SCREED); RE-SCREED OF EXISTING GROUND FLOOR (THE THIRD MOST COMMON SCREED PROJECT IN LONDON RESIDENTIAL RENOVATION IN 2025 — WHERE AN EXISTING CRACKED OR UNEVEN SAND-AND-CEMENT SCREED IS BEING REPLACED IN A GROUND-FLOOR ROOM AS PART OF A WIDER REFURBISHMENT).

Key Takeaways

  • ✓Most specified floor screeds London residential renovation 2025: FLOWING ANHYDRITE LIQUID SCREEDS: Hanson Cemfloor liquid anhydrite flowing screed calcium sulphate binder 45-50mm over UFH pipe (most specified flowing anhydrite liquid screed London residential renovation 2025 — 15-25mm floor build-up height saving over semi-dry sand-and-cement screed most cited reason for specifying flowing anhydrite screed London residential renovation 2025 — must be installed by manufacturer-approved pump contractor most cited installation requirement); drying rate 1mm per day first 40mm+0.5mm per day remaining thickness (50mm Cemfloor requires approximately 40 days before floor tiles fixed most cited drying time calculation London residential renovation 2025); Gyvlon Classic calcium sulphate flowing screed (second most specified — Gyvlon approved contractor certification); PRIMING: all calcium sulphate anhydrite screeds must be primed before cementitious tile adhesive/self-levelling compound/engineered timber — Ardex P 51 diluted 3:1 or Hanson Cemfloor Primer most cited critical installation requirement anhydrite screed London residential renovation 2025 — failure to prime leads to adhesion failure most cited cause tile de-bonding from anhydrite screed London residential renovation 2025; SAND-AND-CEMENT: semi-dry 1:3.5 bonded 40mm minimum thickness (most specified bonded sand-and-cement screed London residential renovation 2025 — 40mm minimum recommended without UFH); SELF-LEVELLING: Ardex A 38 (most specified self-levelling floor compound London residential renovation 2025 — walkable 2 hours most cited fast-track advantage London residential renovation 2025); MICRO-CEMENT: Topciment 2-3mm ultra-thin over existing concrete/screed/tiles (most specified micro-cement London residential renovation 2025 — ultra-low build-up height most cited advantage); POLISHED CONCRETE: Laticrete Supercap SPC 6-12mm ground+polished in-situ (most specified overlay polished concrete system London residential renovation 2025).
  • ✓London floor screed costs 2025 and screed specification for UFH: COSTS LONDON 2025: Hanson Cemfloor 50mm over UFH pipe per m² supply+pump installation approved contractor: £20-£35 per m²; semi-dry sand-and-cement 40mm bonded per m² supply+labour: £15-£25 per m²; Ardex A 38 5mm over existing subfloor per m² supply+labour: £10-£20 per m²; Topciment micro-cement 2-3mm including primer+sealer over existing concrete per m² supply+specialist labour: £90-£180 per m²; Laticrete Supercap SPC 10mm polished concrete overlay per m² supply+specialist grinding+polishing: £80-£150 per m²; UFH SPECIFICATION: Hanson Cemfloor at 45-50mm depth over pipe most specified screed+UFH combination London residential renovation 2025 — excellent thermal conductivity between pipe and floor surface most cited reason specifying Cemfloor over UFH London residential renovation 2025; London residential renovation screed market in 2025 has shifted significantly from traditional semi-dry sand-and-cement towards flowing anhydrite liquid screeds most installed screed type new ground-floor extensions+ground-floor refurbishments London residential renovation 2025.

Contents

  1. 1. Most specified floor screeds, self-levelling compounds, and decorative concrete finishes for London residential renovation in 2025
  2. 2. Drying times, screed specification for UFH, and London residential screed costs in 2025
  3. 3. Frequently Asked Questions

Most specified floor screeds, self-levelling compounds, and decorative concrete finishes for London residential renovation in 2025

Most specified flowing anhydrite liquid screeds, sand-and-cement screeds, self-levelling compounds, and decorative concrete finishes for London residential renovation in 2025: FLOWING ANHYDRITE LIQUID SCREEDS — MOST SPECIFIED IN LONDON RESIDENTIAL RENOVATION IN 2025: MOST SPECIFIED FLOWING ANHYDRITE LIQUID SCREED IN LONDON RESIDENTIAL RENOVATION IN 2025: HANSON CEMFLOOR LIQUID ANHYDRITE FLOWING SCREED (THE MOST SPECIFIED FLOWING ANHYDRITE LIQUID SCREED IN LONDON RESIDENTIAL RENOVATION IN 2025 — HANSON CEMFLOOR — CALCIUM SULPHATE ANHYDRITE BINDER — MOST SPECIFIED THICKNESS OVER UNDERFLOOR HEATING IN LONDON RESIDENTIAL RENOVATION IN 2025: 45-50MM COVERING OVER PIPE (THE MOST SPECIFIED HANSON CEMFLOOR THICKNESS OVER UFH PIPE IN LONDON RESIDENTIAL RENOVATION IN 2025 — COMPARED TO THE MOST COMMON SEMI-DRY SAND-AND-CEMENT SCREED THICKNESS OVER UFH PIPE OF 65-75MM — THE MOST CITED BUILD-UP HEIGHT SAVING OF FLOWING ANHYDRITE SCREED IN LONDON RESIDENTIAL RENOVATION IN 2025 IS 15-25MM); SECOND MOST SPECIFIED FLOWING ANHYDRITE LIQUID SCREED IN LONDON RESIDENTIAL RENOVATION IN 2025: GYVLON CLASSIC CALCIUM SULPHATE FLOWING SCREED (THE SECOND MOST SPECIFIED ANHYDRITE FLOWING SCREED IN LONDON RESIDENTIAL RENOVATION IN 2025 — GYVLON CLASSIC — MOST SPECIFIED WHERE THE INSTALLER HAS A GYVLON APPROVED CONTRACTOR CERTIFICATION); MOST SPECIFIED PUMP PROVIDER FOR FLOWING SCREED INSTALLATION IN LONDON RESIDENTIAL RENOVATION IN 2025: FLOW SCREED LTD (THE MOST CITED SPECIALIST FLOWING SCREED PUMP CONTRACTOR IN LONDON RESIDENTIAL RENOVATION IN 2025 — WHERE FLOWING SCREED MUST BE INSTALLED BY A SPECIALIST PUMP CONTRACTOR RATHER THAN A GENERAL PLASTERER OR BRICKLAYER — THE MOST CITED INSTALLATION REQUIREMENT IN LONDON RESIDENTIAL RENOVATION IN 2025 IS THAT THE SCREED MUST BE LAID BY A MANUFACTURER-APPROVED CONTRACTOR); SAND-AND-CEMENT SCREEDS — MOST SPECIFIED IN LONDON RESIDENTIAL RENOVATION IN 2025: MOST SPECIFIED BONDED SAND-AND-CEMENT SCREED IN LONDON RESIDENTIAL RENOVATION IN 2025: SEMI-DRY SAND-AND-CEMENT SCREED 1:3.5 MIX BONDED (THE MOST SPECIFIED SAND-AND-CEMENT SCREED TYPE IN LONDON RESIDENTIAL RENOVATION IN 2025 FOR AREAS WHERE A FLOWING SCREED IS NOT REQUIRED AND A BONDED OR UNBONDED SCREED IS ACCEPTABLE — MOST SPECIFIED THICKNESS IN LONDON RESIDENTIAL RENOVATION IN 2025 FOR A BONDED SCREED: 40MM (THE MINIMUM RECOMMENDED BONDED SCREED THICKNESS IN LONDON RESIDENTIAL RENOVATION IN 2025 — MOST SPECIFIED FOR AREAS WITHOUT UNDERFLOOR HEATING WHERE A THINNER FLOOR BUILD-UP IS REQUIRED)); SELF-LEVELLING COMPOUNDS — MOST SPECIFIED IN LONDON RESIDENTIAL RENOVATION IN 2025: MOST SPECIFIED SELF-LEVELLING COMPOUND IN LONDON RESIDENTIAL RENOVATION IN 2025: ARDEX A 38 SELF-LEVELLING COMPOUND (THE MOST SPECIFIED SELF-LEVELLING FLOOR COMPOUND IN LONDON RESIDENTIAL RENOVATION IN 2025 — ARDEX A 38 — MOST SPECIFIED FOR LEVELLING EXISTING CONCRETE SUBFLOORS AND EXISTING SCREEDS BEFORE THE INSTALLATION OF FLOOR TILES, VINYL, LVT, OR ENGINEERED TIMBER IN LONDON RESIDENTIAL RENOVATION IN 2025 — MOST CITED ADVANTAGE OF ARDEX A 38 IN LONDON RESIDENTIAL RENOVATION IN 2025: WALKABLE IN 2 HOURS (THE MOST CITED FAST-TRACK ADVANTAGE IN LONDON RESIDENTIAL RENOVATION IN 2025 WHERE CONSTRUCTION PROGRAMMES ARE TIGHT)); POLISHED CONCRETE AND MICRO-CEMENT — MOST SPECIFIED IN LONDON RESIDENTIAL RENOVATION IN 2025: MOST SPECIFIED MICRO-CEMENT IN LONDON RESIDENTIAL RENOVATION IN 2025: TOPCIMENT MICROCEMENT (THE MOST SPECIFIED MICRO-CEMENT PRODUCT IN LONDON RESIDENTIAL RENOVATION IN 2025 — TOPCIMENT — 2-3MM ULTRA-THIN CEMENTITIOUS TOPPING APPLIED DIRECTLY OVER EXISTING CONCRETE, SCREED, OR TILES — MOST CITED ADVANTAGE OF MICRO-CEMENT IN LONDON RESIDENTIAL RENOVATION IN 2025: ULTRA-LOW BUILD-UP HEIGHT (2-3MM — THE MOST CITED ADVANTAGE OVER A POLISHED CONCRETE FINISH IN LONDON RESIDENTIAL RENOVATION IN 2025 WHERE FLOOR LEVELS ARE TIGHT)); MOST SPECIFIED POLISHED CONCRETE FINISH IN LONDON RESIDENTIAL RENOVATION IN 2025: LATICRETE SUPERCAP SPC SELF-LEVELLING OVERLAYMENT POLISHED (THE MOST SPECIFIED OVERLAY POLISHED CONCRETE SYSTEM IN LONDON RESIDENTIAL RENOVATION IN 2025 — LATICRETE SUPERCAP SPC — 6-12MM SELF-LEVELLING CEMENTITIOUS OVERLAYMENT GROUND AND POLISHED IN-SITU).

Drying times, screed specification for UFH, and London residential screed costs in 2025

Drying times, screed specification for underfloor heating compatibility, and typical London residential screed installation costs in 2025: DRYING TIMES FOR FLOOR SCREEDS — MOST IMPORTANT SPECIFICATION PARAMETER IN LONDON RESIDENTIAL RENOVATION IN 2025 FOR PROGRAMME PLANNING: HANSON CEMFLOOR FLOWING ANHYDRITE SCREED DRYING TIME IN LONDON RESIDENTIAL RENOVATION IN 2025: 1MM PER DAY DRYING RATE FOR THE FIRST 40MM + 0.5MM PER DAY FOR THE REMAINING THICKNESS (THE MOST CITED CEMFLOOR DRYING RATE IN LONDON RESIDENTIAL RENOVATION IN 2025 — WHERE A 50MM CEMFLOOR SCREED REQUIRES APPROXIMATELY 40 DAYS TO DRY BEFORE FLOOR TILES CAN BE FIXED — THE MOST CITED DRYING TIME CALCULATION IN LONDON RESIDENTIAL RENOVATION IN 2025); CALCIUM SULPHATE ANHYDRITE SCREED PRIMING REQUIREMENT IN LONDON RESIDENTIAL RENOVATION IN 2025: ALL CALCIUM SULPHATE ANHYDRITE SCREEDS MUST BE PRIMED WITH A DILUTE PRIMER (MOST COMMONLY ARDEX P 51 DILUTED 3:1 OR HANSON CEMFLOOR PRIMER) BEFORE THE APPLICATION OF TILE ADHESIVE, SELF-LEVELLING COMPOUND, OR ENGINEERED TIMBER (THE MOST CITED CRITICAL INSTALLATION REQUIREMENT FOR ANHYDRITE SCREED IN LONDON RESIDENTIAL RENOVATION IN 2025 — WHERE FAILURE TO PRIME AN ANHYDRITE SCREED BEFORE APPLYING A CEMENTITIOUS TILE ADHESIVE LEADS TO ADHESION FAILURE — THE MOST CITED CAUSE OF TILE DE-BONDING FROM AN ANHYDRITE SCREED IN LONDON RESIDENTIAL RENOVATION IN 2025); SCREED SPECIFICATION FOR UNDERFLOOR HEATING — MOST IMPORTANT SPECIFICATION PARAMETER IN LONDON RESIDENTIAL RENOVATION IN 2025: THE MOST CITED SCREED RECOMMENDATION FOR UNDERFLOOR HEATING IN LONDON RESIDENTIAL RENOVATION IN 2025 IS: FLOWING ANHYDRITE LIQUID SCREED SUCH AS HANSON CEMFLOOR AT 45-50MM DEPTH OVER PIPE (THE MOST SPECIFIED COMBINATION IN LONDON RESIDENTIAL RENOVATION IN 2025 — WHERE CEMFLOOR ANHYDRITE SCREED SURROUNDS THE UFH PIPE AND PROVIDES EXCELLENT THERMAL CONDUCTIVITY BETWEEN THE PIPE AND THE FLOOR SURFACE); LONDON RESIDENTIAL FLOOR SCREED COSTS IN 2025 (SUPPLY+INSTALLATION): HANSON CEMFLOOR LIQUID ANHYDRITE FLOWING SCREED 50MM OVER UFH PIPE — PER M² SUPPLY+PUMP INSTALLATION BY APPROVED CONTRACTOR LONDON RESIDENTIAL 2025: £20-£35 PER M²; SEMI-DRY SAND-AND-CEMENT SCREED 40MM BONDED — PER M² SUPPLY+LABOUR LONDON RESIDENTIAL 2025: £15-£25 PER M²; ARDEX A 38 SELF-LEVELLING COMPOUND 5MM OVER EXISTING SUBFLOOR — PER M² SUPPLY+LABOUR LONDON RESIDENTIAL 2025: £10-£20 PER M²; TOPCIMENT MICRO-CEMENT 2-3MM INCLUDING PRIMER AND SEALER OVER EXISTING CONCRETE — PER M² SUPPLY+SPECIALIST LABOUR LONDON RESIDENTIAL 2025: £90-£180 PER M²; LATICRETE SUPERCAP SPC 10MM POLISHED CONCRETE OVERLAY — PER M² SUPPLY+SPECIALIST GRINDING POLISHING LONDON RESIDENTIAL 2025: £80-£150 PER M².

Frequently Asked Questions

What are the most specified floor screeds for London residential renovation in 2025 and what do London screed installations cost?▼
MOST SPECIFIED FLOOR SCREEDS LONDON RESIDENTIAL RENOVATION 2025 AND COSTS: FLOWING ANHYDRITE LIQUID SCREEDS: Hanson Cemfloor liquid anhydrite flowing screed calcium sulphate binder 45-50mm over UFH pipe (most specified flowing anhydrite liquid screed London residential renovation 2025 — 15-25mm floor build-up height saving over semi-dry sand-and-cement screed most cited reason for specifying flowing anhydrite screed London residential renovation 2025 — must be installed by manufacturer-approved pump contractor most cited installation requirement London residential renovation 2025 — drying rate 1mm per day first 40mm+0.5mm per day remaining thickness 50mm screed requires approximately 40 days before floor tiles fixed most cited drying time calculation London residential renovation 2025); Gyvlon Classic calcium sulphate flowing screed (second most specified — most specified where installer has Gyvlon approved contractor certification London residential renovation 2025); PRIMING REQUIREMENT: all calcium sulphate anhydrite screeds must be primed before tile adhesive/self-levelling compound/engineered timber — Ardex P 51 diluted 3:1 or Hanson Cemfloor Primer most commonly specified primers (most cited critical installation requirement anhydrite screed London residential renovation 2025 — failure to prime before cementitious tile adhesive leads to adhesion failure most cited cause tile de-bonding from anhydrite screed London residential renovation 2025); SAND-AND-CEMENT: semi-dry sand-and-cement screed 1:3.5 mix bonded 40mm (most specified bonded sand-and-cement screed London residential renovation 2025 — 40mm minimum recommended bonded screed thickness London residential renovation 2025 — most specified areas without underfloor heating where thinner floor build-up required); SELF-LEVELLING: Ardex A 38 self-levelling floor compound (most specified self-levelling floor compound London residential renovation 2025 — walkable in 2 hours most cited fast-track advantage London residential renovation 2025 tight construction programmes — most specified for levelling existing concrete subfloors+existing screeds before floor tiles/vinyl/LVT/engineered timber); MICRO-CEMENT: Topciment Microcement 2-3mm ultra-thin cementitious topping over existing concrete/screed/tiles (most specified micro-cement London residential renovation 2025 — ultra-low build-up height 2-3mm most cited advantage over polished concrete where floor levels tight London residential renovation 2025); POLISHED CONCRETE: Laticrete Supercap SPC 6-12mm self-levelling cementitious overlayment ground+polished in-situ (most specified overlay polished concrete system London residential renovation 2025); COSTS LONDON 2025: Hanson Cemfloor 50mm over UFH pipe per m² supply+pump installation approved contractor: £20-£35 per m²; semi-dry sand-and-cement 40mm bonded per m² supply+labour: £15-£25 per m²; Ardex A 38 5mm over existing subfloor per m² supply+labour: £10-£20 per m²; Topciment micro-cement 2-3mm including primer+sealer over existing concrete per m² supply+specialist labour: £90-£180 per m²; Laticrete Supercap SPC 10mm polished concrete overlay per m² supply+specialist grinding+polishing: £80-£150 per m².

Important Note

This guide is for general information only. Building regulations, planning rules, and legal requirements change regularly and vary by local authority. Always seek professional advice specific to your project and location. RCB Design & Build offers free initial consultations — book your free survey.

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