Commercial flat roofing
Repair, renewal and installation of flat-roof systems for commercial and managed buildings.
Specify the covering around how the roof is built and used.
Commercial flat roofs often contain outlets, plant, rooflights and multiple junctions. We survey the existing covering and deck, then specify a suitable GRP or built-up felt system for the roof.
Built-up felt roofing
Outlets, upstands and penetrations
Repair or full replacement
Assessing the existing roof
We look for open seams, surface damage, failed details, standing water and signs of wet decking. The condition below the covering may require further investigation once work begins.
Drainage and roof details
A flat roof depends on clear water paths. Outlets, edge trims, kerbs and wall upstands are included in the specification rather than treated as secondary details.
Scheduling replacement work
We plan stripping, temporary protection, materials and safe access around the site. Larger or occupied roofs can be divided into workable sections where the system permits.
Common questions.
Which commercial flat-roof systems do you install?+
JDL Roofing installs GRP fibreglass and built-up felt systems for suitable roofs.
Can a commercial flat roof be repaired?+
Yes, if the defect is local and the surrounding covering and deck remain serviceable.
Can you work around rooflights and plant?+
These details are assessed during the survey so access, weathering and any specialist coordination can be included.
Related roofing information.
Explore connected services and common roof issues before requesting a survey.