Waterproofing renovation for roofs in Marrakech
Old waterproofing, repeated repairs or a roof no longer properly protected? We determine what can be retained, what needs repair and the appropriate solution before renewing the work.
When should waterproofing renewal be considered?
One isolated leak does not necessarily mean renewing everything. However, certain signs show that repeated small repairs may no longer be the right response.
Water ingress returns
The roof has already been repaired but new water entry points appear elsewhere or after each rainy period.
The membrane is worn
Cracks, detachment, blisters or heavily worn areas may indicate waterproofing approaching the end of its useful life.
Upstands are deteriorating
Connections with walls, outlets and other vulnerable points may detach or stop performing properly.
Repairs are accumulating
Where a roof has many local repairs, renewing the system may become more sensible than continued patching.
Repair again or renew the waterproofing?
The right choice depends on overall roof condition. Complete renewal is worthwhile when it solves a problem that local repairs can no longer properly address.
A repair may suffice if
- the defect is clearly localised
- the remaining waterproofing is still sound
- upstands and connections remain appropriate
Complete renovation becomes more sensible if
- defects are spread across several areas
- waterproofing is ageing or heavily repaired
- the roof also needs reconfiguration, insulation or a new finish
Unsure whether to repair or renew?
Tell us about your roof's condition and previous work. We help determine what genuinely needs attention.
What needs checking before renovation
A new membrane is not enough if the substrate, falls or connections already have problems. Renovation must start from the roof's actual condition.
Substrate and existing waterproofing
We assess substrate condition, adhesion and compatibility with the new solution before deciding to retain, prepare or remove old layers.
Falls and outlets
Renovation is also an opportunity to correct ponding or poor drainage where the roof configuration requires it.
Upstands and roof details
Connections with walls, outlets, ducts and other penetrations are checked because they are integral to the waterproofing system.
Intended use and finish
Renovation is designed differently for a roof that remains non-accessible, receives tiles or includes thermal insulation.
Single or two layers: the choice depends on the roof
Layer count is not chosen in isolation. Substrate, roof use, final protection and overall configuration determine the appropriate renovation system.
Single-layer waterproofing
A single-layer solution may suit some renovations where substrate, use and planned protection permit this system.
Two-layer waterproofing
A two-layer system combines two membranes and may be selected according to substrate, use, final protection and the extent of repairs required.
Use renovation as an opportunity to add insulation
If you also want better thermal comfort, insulation can be included and designed with the new waterproofing system.
How complete renewal proceeds
Exact stages depend on site findings, but proper renovation starts with the existing construction before installing new waterproofing.
Preparing or removing the existing system
Existing waterproofing is retained and prepared where possible, or removed where its condition or the new system requires it.
Repairing the substrate and falls
Substrate defects and problem areas are corrected before receiving new waterproofing.
Installing new waterproofing
The selected system is installed with upstands, connections, outlets and other details treated.
Protection and finish
The roof receives protection or finish suited to its use: exposed protected membrane, tiles or another appropriate project configuration.
Has your roof already been repaired several times?
Before another local repair, we can determine whether wider renovation has become more sensible.
What affects waterproofing renovation prices
The price depends as much on repairs needed before installation as on the new system itself. A badly damaged old roof needs different work from a sound substrate.
Waterproofing renovation in Marrakech: your questions
When should roof waterproofing be completely renewed?
Complete renewal is most relevant when defects affect several areas, the membrane is very old or local repairs multiply. If the problem is truly localised and the rest of the roof is sound, repair may suffice.
Must the old waterproofing always be removed?
No. It depends on condition, adhesion, substrate and the proposed system. Compatible, sufficiently stable waterproofing can sometimes be prepared and retained, while badly damaged material may need removal.
Single or two layers: which for renovation?
The choice depends on substrate, roof use, final protection and necessary repair extent. It is not determined solely by layer count: the system must suit the complete roof.
Can insulation be added during renovation?
Yes. Renovation can be an opportunity to include thermal insulation, provided it and the waterproofing are designed as one system suited to the substrate and roof use.
Can waterproofing on an already tiled roof be renovated?
Sometimes, but the method depends on tile condition, underlying construction and planned new finish. The roof must be examined before deciding whether to remove, prepare or repair areas.
How long does waterproofing renewal take?
Duration mainly depends on area, existing waterproofing condition, substrate repairs and selected system. The expected schedule is defined with the scope before work starts.