2026/27 STATUTORY & COST AUDIT • ICO REG ZC136598
True Structural Conservatory Roof Replacement vs "Clad-Over" Wrap Scams (2026 Audit)
Why are internal conservatory ceiling wraps and clad-over roofs dangerous?
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.
| Engineering Criterion | Full Structural Roof Replacement | Internal "Clad-Over" Ceiling Wrap |
|---|---|---|
| Old Polycarbonate / Glass Roof Removed? | 100% Stripped Back to Window Ring-Beam | No — Left Trapped Above New Ceiling |
| Condensation & Structural Load Safety | Ventilated Breather Membrane + Engineered Frame | Severe Condensation Trap & Frame Bowing Risk |
| LABC / JHAI Completion Certificate | Yes — Official Building Regs Certificate | No — Fails Building Regulations & Conveyancing |
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