Condition evidence
Review membrane, insulation, deck or sheets, moisture, corrosion, movement and drainage to establish what can remain.
Replace only when condition and project needs justify it
Commercial Roof Replacement
Replacement can be the correct decision where the existing roof or deck cannot provide a reliable base for repair or refurbishment. It should follow evidence about condition, moisture, structure, drainage and future building use—not an assumption that every ageing roof needs stripping.
01Condition first
02System compatibility
03Approved delivery
Direct answer
Commercial roof replacement removes and renews all or a defined part of the existing roof system. It is normally considered when the substrate is structurally unsuitable, moisture is widespread, defects are systemic, compliance requirements cannot be achieved through refurbishment, or the building strategy justifies full renewal.
Before we recommend work
Inspect the roof before choosing a product.
The defect, roof condition and building use determine the work required. We do not choose a product before understanding the building.
Option comparison
Compare local repair, overlay, refurbishment and replacement against risk, disruption, required lifespan and total project scope.
Replacement scope
Define whether renewal is local, phased or complete and how interfaces, outlets, rooflights, plant and penetrations will be handled.
When this route fits.
- 01The supporting deck or sheets are no longer serviceable.
- 02Moisture or deterioration is too widespread for a dependable overlay.
- 03The required change in performance or roof configuration cannot be achieved through refurbishment.
When it does not.
- 01The roof is broadly sound and defects are genuinely local.
- 02A compatible refurbishment can meet the project's needs with less work.
- 03Replacement is proposed without condition evidence or a comparison of alternatives.
How we deliver the work
From survey to installation.
Where replacement is justified, Forti Nova can help select the materials, involve the manufacturer where needed and appoint an approved contractor.
01
Establish existing construction and condition.
02
Compare repair, refurbishment and replacement.
03
Define interfaces, risks and project requirements.
04
Coordinate system supply and approved-contractor delivery.
Related services
Related services.
Start with the problem, inspect the roof and then agree the repair or refurbishment system.
Your roof. Your next step.
Show us the roof
Send the building location, photographs and what is happening. We will help define the most useful next step.