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20+ Pre-Configured 2026 Specialist Calculators & Price Benchmarks

UK Conservatory Roof Replacement Cost Calculators by Size, Style & System (2026)

Select your exact conservatory dimensions (3m×3m, 3m×4m, 4m×4m), roof style (Victorian, Edwardian, Lean-To), or warm roof brand (Guardian, SupaLite, Ultraframe) for itemised 2026 UK prices.

6.25 m² Internal Area£3,450 – £4,650

2.5m × 2.5m (6.25m²) Small Conservatory Roof Replacement Cost

2–3 Days Turnkey Fit Including Plastered Ceiling & LABC (U-Value 0.15 W/m²K).

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9.0 m² Internal Area£4,150 – £5,600

3m × 3m (9m²) Conservatory Solid Warm Roof Replacement Cost

Most Popular UK Compact Lean-To & Victorian Size (U-Value 0.15 W/m²K).

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10.5 m² Internal Area£4,550 – £6,150

3m × 3.5m (10.5m²) Conservatory Solid Roof Price Guide

Includes 150mm PIR Insulation, Tapco Slate & LED Spotlights (U-Value 0.15 W/m²K).

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12.0 m² Internal Area£4,950 – £6,750

3m × 4m (12m²) Edwardian & Victorian Solid Roof Replacement Cost

UK Standard Medium Family Conservatory Benchmark (U-Value 0.15 W/m²K).

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12.25 m² Internal Area£5,100 – £6,900

3.5m × 3.5m (12.25m²) Square Edwardian Conservatory Roof Cost

Pre-Fabricated Structural Aluminium Ring-Beam System (U-Value 0.15 W/m²K).

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16.0 m² Internal Area£6,150 – £8,250

4m × 4m (16m²) Large Conservatory Solid Tiled Roof Cost

Includes Dual Velux Roof Windows & Full LABC Final Certificate (U-Value 0.15 W/m²K).

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20.0 m² Internal Area£7,250 – £9,650

4m × 5m (20m²) Large Gable & Edwardian Solid Roof Price

Heavy-Duty Structural Box Gutter & Tie-Bar Engineering (U-Value 0.15 W/m²K).

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20–24 m² Internal Area£7,850 – £10,950

5m × 4m (20m²+) P-Shape & T-Shape Conservatory Roof Cost

Bespoke Valley Gutter & Faceted Hip Rafter Construction (U-Value 0.15 W/m²K).

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Low-Pitch Down to 12.5°£3,650 – £5,950

Lean-To Mono-Pitch Conservatory Solid Roof Conversion Cost

Ideal for Bungalows & Terraced Houses with Height Restrictions (Metrotile Low-Pitch Shingle).

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Faceted Hip Rafters£4,650 – £7,450

Victorian 3-Facet & 5-Facet Bay Conservatory Solid Roof Cost

Precision Mitred Hip Rafters & Internal Vaulted Plaster Finish (Tapco Slate + Hip Caps).

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Maximised Floor Space£4,450 – £7,150

Edwardian / Georgian Square Conservatory Solid Roof Cost

Symmetrical 4-Hip Ridge Design with Central Chandelier Pelmet (U-Value 0.15 W/m²K).

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High Vaulted Ridge£4,850 – £7,850

Gable-End Conservatory Solid Roof & Glazed Triangle Cost

Retains Vertical Glazed Gable Sunburst with Insulated Roof Slopes (U-Value 0.15 W/m²K).

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EPDM / GRP + Korniche Lantern£6,450 – £10,450

Conservatory to Orangery Flat Warm Roof & Aluminium Lantern Cost

Internal Perimeter Lighting Pelmet with Central Sky Lantern (U-Value 0.14 W/m²K).

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LABC Registered System£410 – £540 / m² Fitted

Guardian Warm Roof Cost Per m² (2026 Official LABC System Guide)

Complete Structural Removal of Old Polycarbonate/Glass Roof (U-Value 0.15 W/m²K).

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JHAI / LABC Approved£395 – £525 / m² Fitted

SupaLite Tiled Conservatory Roof Cost & Specification Guide

Optional SkyVista Full-Length Solar Control Glass Panels (ExtraLight Tiles / SkyVista).

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BBA & Assure Certified£425 – £560 / m² Fitted

Ultraframe Ultraroof 380 & Livinroof Hybrid Price Calculator

Lightweight Box-Beam Engineering Under 38 kg/m² (Zero Tie-Bars Required).

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BBA 40-Year Warranty£4,250 – £7,450

Tapco Synthetic Slate vs Metrotile Steel Conservatory Roof Cost

Limestone/Recycled Dolomite Slate vs Stone-Coated Pressed Steel (12 kg/m² vs 6.5 kg/m²).

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78% Solar Heat Rejection£3,450 – £5,850

Solar-Control Self-Cleaning Glass Conservatory Roof Cost (Pilkington / Celsius)

Argon-Filled Active Blue / Neutral Tough Glazing Replacement (U-Value 1.0 W/m²K).

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Structural Frame Check£4,150 – £6,950

Replacing Polycarbonate with a Solid Tiled Roof: Can Existing Frames Take the Weight?

Why Clad-Over Is Banned and Full Rafter Replacement Is Mandatory (32–38 kg/m² Dead Load).

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BS 5250 Condensation Warning£1,950 vs £4,850

Internal Insulated Plaster Ceiling Clad-Over vs Full Solid Warm Roof Cost

Why Cheap Under-Cladding Traps Interstitial Moisture & Voids Insurance (LABC Exempt vs Certified).

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