White Rock Commercial Flat Roofing
Commercial, strata and multi-family properties in White Rock use a variety of flat and low-slope roofing systems, from SBS modified bitumen to EPDM, TPO and PVC.
When these roofs are maintained regularly, developing deficiencies can often be identified before they become persistent leaks. When maintenance has been neglected for several years, finding the source of water entry can become considerably more difficult.
At Flat Roofing Insights, we bring more than 33 years of flat roofing experience to commercial roof inspections, leak investigation, repairs, preventative maintenance and replacement planning.
Sometimes that means investigating a roof after previous attempts to stop a leak have been unsuccessful.
Finding Difficult Flat Roof Leaks
Not every flat roof leak is easy to locate.
Flat Roof Assessment
Water can enter through a relatively small membrane defect and travel before becoming visible inside the building. On large roofs, the source can be a considerable distance from where the occupants first notice water.
Previous repairs can make the investigation more complicated if the original source was never correctly identified.
The starting point should be a systematic inspection of the roofing system rather than simply applying another repair above the internal leak location.
Ballasted EPDM Roofs
Ballasted EPDM roofing uses a flexible rubber membrane protected and held in place by stone ballast.
These systems can perform for many years, but the ballast means that much of the waterproofing membrane is hidden from normal view.
When investigating a leak, substantial amounts of stone may have to be carefully moved before the membrane can be inspected.
On a large commercial roof, that can make locating a small split or poorly bonded seam particularly time-consuming.
Preventative Roof Maintenance in White Rock
Regular maintenance is especially useful on ballasted roofs because much of the membrane cannot be seen during a casual visual inspection.
Maintenance provides an opportunity to check accessible areas around:
- Roof drains
- Penetrations
- Rooftop equipment
- Perimeters
- Membrane seams
- Previous repairs
- Areas showing signs of movement or deterioration
Where necessary, ballast can be moved in selected areas so that the membrane underneath can be inspected more closely.
Finding developing problems early is considerably easier than waiting until multiple leaks begin appearing inside the building.
Commercial Roof Leak Repairs
Once the source of a leak has been properly identified, localised EPDM deficiencies can often be repaired.
The important part is establishing whether the problem is genuinely isolated.
Finding one split does not necessarily mean there are no other defects elsewhere, particularly on an older roof that has received limited maintenance.
The condition of the surrounding membrane, seams and previous repair areas should also be considered.
When Several Roof Leaks Start Appearing
A roof that has been neglected for a number of years can begin to develop problems in more than one location.
At that stage, repeatedly responding to individual leaks may become less effective than carrying out a broader condition assessment and establishing a maintenance and repair plan.
That does not automatically mean the roof needs replacing.
It does mean the owner or property manager should understand the overall condition of the roofing system rather than waiting for the next leak to appear.
Flat Roofing Systems in White Rock
Commercial, strata and multi-family buildings in White Rock can use several different roofing systems, including:
- SBS modified bitumen
- TPO
- PVC
- EPDM
- Built-up roofing
Each system has different inspection, maintenance and repair requirements.
The condition, age and construction of the existing roof should be understood before deciding whether maintenance, targeted repairs or replacement is the appropriate approach.
Commercial, Strata & Multi-Family Roofing in White Rock
Our White Rock flat roofing services are suitable for:
- Commercial properties
- Strata buildings
- Multi-family developments
- Retail buildings
- Industrial properties
- Property management portfolios
Whether the problem is an active leak, deteriorating membrane, drainage issue or simply uncertainty about the condition of an older roof, an inspection provides a starting point for deciding what should happen next.
Challenging EPDM Leak Investigation in White Rock
This White Rock project involved a large ballasted EPDM roof with ongoing leaks.
Two other roofing contractors had previously attended the property but had been unable to successfully locate and stop the water entry.
We were subsequently asked to investigate the roof.
A Large Ballasted EPDM Roof
The size and construction of the roof made the investigation challenging.
Much of the EPDM waterproofing membrane was concealed beneath stone ballast, meaning the membrane could not simply be walked and visually inspected in the same way as an exposed roofing system.
Large ballasted EPDM commercial roof inspected during a difficult leak investigation in White Rock
Moving the Ballast to Inspect the Membrane
A substantial area of stone had to be moved to expose the EPDM membrane below.
After several hours of investigation and progressively exposing the membrane, two areas requiring repair were eventually identified.
This is one of the challenges with ballasted EPDM systems. A relatively small defect can be hidden beneath a very large roof area.
Ballast moved from a large area of an EPDM roof to expose the membrane during leak investigation.
First Split in the EPDM Membrane
Once the membrane was exposed and carefully inspected, a split was identified.
The defect itself was relatively small compared with the overall roof area, illustrating why it had been difficult to locate.
Split identified in the EPDM membrane during a commercial roof leak investigation in White Rock.
A Second Membrane Split
Further investigation identified another split in the EPDM.
Finding more than one deficiency was important because repairing the first defect and stopping the investigation could have left another potential source of water entry unresolved.
Second split discovered in the EPDM membrane after ballast was removed for inspection
Poorly Adhered EPDM Seam
Another area showed a small section of membrane seam that had not remained properly adhered.
Although relatively small, details like this need attention because seams form part of the waterproofing system.
Small section of an EPDM membrane seam showing inadequate adhesion on a White Rock commercial roof.
What This White Rock Inspection Demonstrated
This project demonstrates why difficult roof leaks sometimes require considerably more investigation than simply attending the property and applying a patch.
The defects were small. The roof was large. Most of the membrane was hidden beneath ballast.
Several hours were required to move stone, expose sections of membrane and systematically investigate the roof before the defects could be located.
It also highlighted a larger concern.
The roof had received limited maintenance for a number of years, and several deficiencies were now becoming apparent. Although the defects identified during this visit could be addressed, further problems may develop elsewhere if deterioration continues.
For this type of roof, moving from reactive leak repairs to a planned inspection and maintenance programme would provide the owner with a much clearer understanding of its overall condition.
Need Help With a Flat Roof in White Rock?
If you own or manage a commercial, strata or multi-family property in White Rock, we can help with roof inspections, difficult leak investigations, targeted repairs, preventative maintenance and replacement planning.
Call 778.908.3968
FAQ
Why are leaks difficult to find on ballasted EPDM roofs?
The waterproofing membrane is covered by stone ballast, so the membrane cannot always be directly inspected. Ballast may need to be moved from sections of the roof to expose the EPDM and locate small splits, seam problems or other defects.
Can a split EPDM membrane be repaired?
Localised splits can often be repaired if the surrounding membrane remains in suitable condition. The rest of the affected area should also be inspected to determine whether other deficiencies are present.
Does finding one roof leak mean the problem is solved?
Not necessarily. A roof can have more than one defect. On the White Rock roof above, continued investigation identified more than one membrane deficiency.
Should a ballasted EPDM roof receive regular maintenance?
Yes. Regular inspections and maintenance can help identify drainage problems, deterioration around penetrations and other developing deficiencies. Selected areas of ballast may need to be moved when closer membrane inspection is required.
