Weight: Any old conservatory needs to have a roof that is lightweight. The lightest solid roof systems weigh around 31KG/M ². Clad over solutions could be too heavy for the existing frames as they use heavy timber, insulation materials and tiles.
Our tip: Remember to ask your installer for the unit weight of the new roof per Sq.M.
Fire Safety: ‘Clad-over’ systems do not meet current fire safety regulations as they are never effectively fire tested as a complete roof structure (this is necessary to meet this part of building regulations). The original structure varies from job to job which means that only individual components could have been tested. Solid roofs must be classified as AC, AB or AA in accordance with BS476-3.
Our tip: Always request to see the fire safety certificate of the entire roof system before committing.
Building Regulations: Please note that clad over systems do not generally get Building Regulation Approval due to their low thermal value or structural integrity. Do not confuse this with planning permission which is quite often not necessary. You need to notify Building Control if you are making a change to any structure (this includes replacing a glass or polycarbonate conservatory roof with a solid roof). Their approval is crucial because it ensures your new roof’s structure is sound.
Our tip: Check that local Building Control has been informed before the conversion starts. Obtain a Building Regulations ‘Final’ Certificate. Keep it in a safe place!