Trusted Commercial Flat Roofers in London

We have been established since 1996 and pride ourselves to provide a trustworthy, reliable, and professional service where we work closely and efficiently with our clients.

As a commercial roofing contractor, we specialise in flat, pitched, landscaped, green & blue roofs as well as water leaks/ingress, roof surveys & small works roofing and have won 2 national awards.

We offer an excellent quality service from design to completion of a project that will exceed your expectations and needs.


27 Years
2 National
Projects Worth
Over £1.5 million

Expertise in Flat Roof Installation for London

Protech Roofing’s proficient team specialise in flat roof installations boasting extensive experience. With a great understanding of commercial roofing intricacies, our dedication to quality guarantees precise handling of your project from inception to completion.

Our team of experienced designers and landscapers will work with you to create a bespoke solution that meets your unique needs and budget. They will oversee your project every step of the way.

Previous Projects

Here are some of our previous flat roof project projects

Mayfield Primary School

New build construction using IKO with a 20 year Guarantee waterproofing, with 30% of the roof area having a Sedum roof.

Primark Store - Southend

Overlay of existing  2200m2 Asphalt roof in Sikabit felt System, with an insulation upgrade. We provided a 25 tear guarantee for this Project

Hurst Park Primary School - Surrey

Part modular, part new build this was a 2000m2 Newbuild project installing Sika Sarnafil G410 – 15EL light grey membrane, PUR insulation and self adhesive, offering a 20 year guarantee


Commercial Roofing solutions for your Business

Due to the latest building regulations, non – combustible materials are required on roof installations.

Bitumen Waterproofing

The robust nature of Bitumen Waterproofing Membrane makes these types of roofs resistant to punctures, scratches, and impact damage, meaning they are incredibly long-lasting. 

There are many methods for installing bitumen membrane systems. This includes the torch-on-bitumen method as well as fixing or adhering to the system. At Protech Roofing, we are experienced in fitting and maintaining bitumen membrane roofs. Our expert team can tell you the best installation method for your project.


Single Ply Membrane

Not only is the single ply membrane durable and weather resistant but it is also exceptionally lightweight, eight in at around 3kg per metre. If your project has weight and load-bearing considerations, then this is the perfect solution. With over 27 years of experience, Protech Roofing has provided waterproofing services for many reputable projects.

In 2017, Protech was awarded the Best Refurbishment Award by the SPRA (Single-Ply Roofing Association).


Hot Melt Roofing System

Hot-melt roofing systems work by applying hot liquid to the prepared roof to create a completely seamless, monolithic layer. This works to protect the roof from rain, snow, frost, and other damage. At Protech Roofing, we partner with some of the best hot-melt waterproofing suppliers and providers in the industry, including IKO and Bauder. 

Aluminium Terrace Decking is the perfect choice for terraces, balconies, and walkways. It has excellent spanning capabilities, quick installations and is guaranteed for 20 years


At Protech Roofing, we redefine commercial roofing in London, providing unmatched expertise in flat roof installations. 

Contact us today to elevate your commercial property with our innovative and reliable roofing solutions. 


With our office in Tooting we cover all across London, inside the M25 and the surrounding areas.