Head-to-Head Specification & Cost Comparisons
Independent side-by-side audits compiled by Tarquin Barnsby (trading as ConservatoryRoofCalculator.co.uk) (ICO Reg: ZC136598). Every comparison includes full 2026 cost bands with zero email or phone gate.
Guardian Warm Roof vs SupaLite Tiled Conservatory Roof: 2026 UK Engineering & Cost Comparison
Both Guardian Warm Roof and SupaLite are LABC/JHAI pre-approved structural lightweight aluminium conservatory roof systems achieving a 0.15 to 0.18 W/m²K U-value. Guardian uses a ventilated twin-deck plywood/kingspan build (£335–£355/m² installed), whereas SupaLite uses an ultra-lightweight breathable membrane and Tapco/ExtraLight tile assembly (£325–£345/m²) ideal for older uPVC side frames.
Lightweight Tiled Warm Roof vs Solar Control Glass vs 35mm Polycarbonate (2026 UK Matrix)
A lightweight tiled warm roof (£340/m², U-value 0.15 W/m²K) reduces winter heat loss by 90% and eliminates summer greenhouse glare, turning the room into a year-round extension (requires £380 LABC sign-off). Solar control self-cleaning glass (£245/m², U-value 1.0 W/m²K) retains maximum sky light into the adjoining kitchen/diner and remains Building Regulations exempt as a translucent replacement.
LABC Council Building Control vs JHAI Approved Inspector for Solid Conservatory Roofs
Yes. Under the 2010 Building Regulations (as amended), replacing a translucent conservatory roof with a solid tiled roof removes its thermal exemption. You must obtain a Final Completion Certificate from either your local council LABC (£320–£450) or an accredited Approved Inspector such as JHAI/Assent (£350–£395), or solicitors will block your property sale until you purchase indemnity insurance.
True Structural Conservatory Roof Replacement vs "Clad-Over" Wrap Scams (2026 Audit)
Internal "clad-over" wraps screw timber batons and foil insulation beneath your existing polycarbonate roof without removing the old glazing bars. This traps interstitial condensation above the foil (rotting the structure), overloads aluminium glazing bars never rated for dead-weight plasterboard, and cannot obtain an LABC Building Regulations certificate.
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