Commercial Roofing

Commercial Roofing in your area

Commercial roofing covers a wide range of building types and systems that are quite different from domestic work. In and around Downham Market that means agricultural storage buildings, business park units, industrial sheds, retail premises, and older town centre commercial properties with flat or low-pitch roofs. Each type has specific load requirements, drainage demands, and material considerations.

The most common systems we install and repair are single-ply membrane roofing (TPO and EPDM), built-up felt systems, GRP fibreglass on smaller flat areas, and profiled steel or fibre cement sheeting on agricultural and industrial buildings. On larger flat roofs we carry out condition surveys first, using moisture detection where needed to identify areas of trapped damp before specifying either a full replacement or an overlay system. All penetrations, rooflights, upstands, and drainage outlets are treated as critical junctions and detailed carefully.

Commercial roofs fail most often at details — around penetrations, at parapet walls, and where different roof levels meet. A poorly executed repair in one of these areas can lead to water tracking several metres before it shows internally, making the source hard to trace. Getting the detailing right first time avoids repeated call-outs and disruption to your business.

We work around your operating hours where possible, including early starts and weekend working for buildings that cannot be partially closed. We provide a written scope of works, a programme, and a completion certificate on every job. Guarantees of ten to twenty years are available on new membrane installations depending on the system chosen.

Commercial flat roof replacement in Norfolk typically costs between £45 and £90 per square metre, depending on the membrane system, access method, and whether the existing deck requires replacement.