A leaking or failing roof is more than just a maintenance issue; it’s a risk to your building, your tenants, and your operations.
At Building Transformation, we specialise in sensitive, expertly delivered commercial roof waterproofing and repair projects across a full range of roof types. We’ve worked on everything from busy hotels, heritage domes to large commercial estates. Our teams work flexibly around your occupants and operations, to minimise disruption while maximising performance.
We combine technical expertise with tailored access strategies such as rope access, MEWPs, cradles, anchor systems and walk-on inspections to reach every inch of your roof. So reactive roof leak repairs or a planned maintenance programme, we can deliver safe, evidence-backed solutions that protect your asset and extend its life.
We work across:
No two commercial roofs are the same, and neither are the repairs they need.
We understand that every repair must be precise, safe, and compliant.
Our access-trained teams use rope access, MEWPs, and non-invasive techniques to reach even the most complex areas with minimal disruption to your business.
From high-rise office blocks and hotels to heritage-listed sites and retail centres, we’ve quite literally seen, and solved, it all.
Flat roofs are vulnerable to ponding, membrane splits, and drainage issues. They’re commonly built with felt, bitumen, or single ply systems (such as PVC or TPO), and they may degrade over time due to weather exposure, UV, and poor drainage.
We can assist with:
We also check for issues beneath the surface, using thermal imaging or moisture mapping where needed to assess insulation saturation and underlying deck integrity.
Pitched roofs often suffer from slipped tiles, ridge failures, or damaged underlays. These issues can allow water ingress, particularly around chimneys, valleys, and flashing points.
Because these roof types often front public or sensitive spaces, we plan repairs with extra care to avoid noise, dust, or disruption, especially in high traffic buildings like hotels, schools, or commercial offices.
Metal roofs are known for longevity, but can still suffer from corrosion, loose fixings, and joint failure. Expansion and contraction through seasonal changes can also cause movement in fixings and seals.
Our repair services include:
Need to investigate a roof leak or plan proactive repairs?
We’ve delivered sensitive liquid waterproofing work on buildings like the Hilton London Hyde Park dome, where our team completed a full external envelope survey followed by liquid membrane installation to waterproof the curved dome structure -preserving its historic integrity while resolving recurring leaks.
Liquid waterproofing is ideal for domes, skylights, and roof lanterns because it:
We are an LRWA (Liquid Roofing and Waterproofing Association) accredited company, which gives the added assurance that all our work meets industry best practice and product specification guidelines. Our application teams are trained and certified in multiple leading membrane systems and work closely with manufacturers to ensure correct preparation, installation, and curing.
Common issues we can resolve include:
Every project begins with a thorough condition survey, followed by clear recommendations and a step-by-step waterproofing plan. You’ll receive photographic evidence, specification details, and optional aftercare guidance to ensure continued performance over time.
Roof drainage is critical to maintaining the structural integrity of any commercial building.
When rainwater isn’t properly managed, it can lead to water ingress, roof damage, and even foundation issues. While our dedicated guttering page explores full system maintenance and replacement, this section will focus on gutter lining; this is an essential solution when roof drainage is integrated into the roofing system itself.
Read more about Gutter and Rainwater maintenance.
For commercial roofs, particularly flat or low-pitched designs, they usually have internal gutters and parapet drainage systems that form part of the roof structure.
These integrated systems are especially common in large retail units, warehouses, schools, and older public buildings. When these systems begin to fail due to corrosion, joint movement, or age, complete gutter replacement can be disruptive, expensive, and logistically complex.
That’s where gutter lining comes in. A commercial gutter lining system creates a new watertight barrier within the existing gutter, extending its lifespan and restoring its performance without the need for full removal. Suitable for metal, concrete, and timber gutters, lining systems can be cold-applied for minimal disruption and are flexible enough to accommodate thermal movement and structural shifts.
For internal systems and box gutters, we often recommend flexible liquid-applied membranes or pre-formed single-ply systems that provide a durable, long-lasting finish. These are ideal for dealing with awkward junctions, variable widths, and tight corners commonly found in older properties.
Balconies and walkways are key functional and aesthetic features of many commercial and residential buildings. However, because they are continuously exposed to the elements and often constructed from concrete or metal substrates, they’re especially vulnerable to water ingress, corrosion, and surface deterioration over time.
Whether you manage a luxury apartment block, a hotel, or a commercial complex, maintaining these external features is essential for resident safety, building compliance, and asset value. At Building Transformation, we offer tailored repair and waterproofing services for balconies and walkways, including those that are difficult to access using traditional methods.
Our IRATA-trained technicians can carry out:
One of the most common causes of balcony deterioration is failed waterproofing. When surface coatings degrade, water can penetrate the concrete slab, leading to corrosion of embedded steel and surface spalling. We’ve designed our waterproofing systems to provide a seamless, slip-resistant finish that protects against water ingress while maintaining a clean, attractive appearance.
We use flexible liquid membrane systems that:
We will carry out a full condition survey and provide a clear schedule of works. Our teams work flexibly around operational hours to minimise impact on residents, guests, or tenants.