Membrane patching
Compatible repairs to seams, punctures and localized field damage.
Low-slope membranes
Flat / Low-Slope Roof Repair
SBS, torch-on, TPO/EPDM patching, flashing and penetration repairs on flat and low-slope roofs.
What is flat roof repair?
Flat and low-slope roof repair addresses membrane seams, flashings, penetrations and localized membrane failures without necessarily replacing the entire low-slope assembly.
Who this is for
Start with the condition, not the product
Owners with ponding seepage, failed seams, curb leaks or open membrane areas on low-slope roofs.
Flat and low-slope roof repair addresses membrane seams, flashings, penetrations and localized membrane failures without necessarily replacing the entire low-slope assembly.
Common warning signs
- Seam openings
- Puncture marks
- Failed pitch pans or penetration pockets
- Blisters with active seepage
- Drains or scuppers not controlling water
Assessment discipline
What Revolin evaluates
- 01
Membrane type
- 02
Patch compatibility
- 03
Drainage patterns
- 04
Penetration condition
- 05
Whether insulation is wet beyond local repair
Typical causes
What often drives the need for this work
- Membrane aging
- Foot traffic damage
- Ponding stress
- Flashing movement at parapets
- Incompatible prior patches
Methodology
How Revolin approaches the work
- 01Identify membrane system
- 02Define compatible patch method
- 03Repair flashings and penetrations
- 04Improve local drainage details where practical
- 05Recommend replacement if the system is exhausted
Process
From enquiry to completion review
- 01
Identify the membrane system and failure points
- 02
Moisture and drainage review around the damage
- 03
Written scope for compatible patching and details
- 04
Execute repairs with system-appropriate methods
- 05
Review drainage behaviour and document the work
Materials & systems
Materials and detailing categories
- Compatible membrane patches
- Flashing metals and accessories
- Penetration pockets or prefabricated details
- Adhesives or heat processes as system-appropriate
Penetration and curb detailing
Restore waterproofing at rooftop openings.
Drainage-focused corrections
Address details that hold water against weak points.
Metro Vancouver climate
BC weather shapes the failure mode and the detail
Long wet seasons and ponding risk make seam and drain detailing critical on Lower Mainland low-slope roofs.
When this service is appropriate
When failures are localized and the membrane field can still accept durable patches.
When another service may fit better
Saturated insulation or system-wide seam failure usually means replacement planning.
When repair may make sense
Repair when the membrane remains broadly viable.
When replacement may make sense
Replace when the system is saturated or repeatedly failing.
Scope
What influences the work
The actual scope is established after assessment. Revolin Roofing does not publish a one-size-fits-all price, lifespan or assembly because those depend on the building and selected system.
- Membrane type
- Repair area
- Access
- Penetration count
- Drainage conditions
Related services
Services often considered together
Low-slope reroof
Flat Roof Replacement
Complete residential or commercial low-slope reroof using SBS, TPO, PVC or other specified membrane systems.
Transitions and interfaces
Flashing & Penetrations
Repair of chimney, wall, vent, pipe boot and other roof penetration flashings where water commonly enters Metro Vancouver roofs.
Active water entry
Emergency Leak Repair
Priority leak diagnosis — same-day when scheduling allows — with temporary or permanent localized repair when water is entering a Metro Vancouver home through the roof assembly.
Condition first
Health Check
Inspection, photographs, minor sealant or maintenance work and a roof condition report for informed planning.
Questions
Before you decide
What is flat / low-slope roof repair?
Flat and low-slope roof repair addresses membrane seams, flashings, penetrations and localized membrane failures without necessarily replacing the entire low-slope assembly.
Why does the membrane type matter for a flat roof patch?
Each membrane bonds differently: SBS is torch- or adhesive-applied modified bitumen, TPO is heat-welded, and EPDM relies on adhesives and tapes. A patch of the wrong material or method will not bond durably — misidentified patches are a common cause of repeat leaks.
Is ponding water on my flat roof a problem?
Standing water that persists well after rain stresses seams, accelerates membrane aging and magnifies any small defect. Some causes are repairable — blocked drains, localized low spots — while structural slope problems point toward a replacement-level discussion.
Can a flat roof be repaired in winter?
Often yes, with method adjustments: some materials and adhesives have temperature limits, and surfaces must be dry. Emergency stabilization is nearly always possible; certain permanent details may wait for a suitable weather window.
How do I know if the insulation under the membrane is wet?
Symptoms include persistent interior dampness, membrane blistering and soft or spongy areas underfoot; confirmation may need moisture scanning or test cuts. Wet insulation matters because patching over it traps moisture and continues the deterioration.
Related project evidence
Before and after for this service
Roofing Transformation — Low-Slope Membrane Repair
richmond · Low-slope membrane
Roofing Transformation — Strata Membrane Repair
burnaby · Low-slope membrane
Next step
Request a clear assessment of your roof
Tell us what you are seeing and where the property is. We will use that context to plan the right next conversation.
Call +1 (778) 851-0830