Basement and cellar tanking in Gueliz
Free survey · written quote in 24 h · firm price in writing
Rainy season Nov–Mar · act before the first leakFree quote within 24 hours
Leave your details: we call you back and book the free survey, at no cost and with no obligation.
Basement and cellar tanking in Gueliz is one of the jobs we carry out most often in the area. Materials rated for the Marrakech climate, a tidy site, deadlines kept: free survey, written quote within 24 hours, ten-year warranty on the works.
Rainy season Nov–Mar: The Marrakech rainy season runs from November to March: that is when every tired terrace reveals itself. An ignored leak costs up to 10 times the price of waterproofing — damaged beams, lifted tadelakt, mould, repainting — and cuts the value of the property. The right time to waterproof is before the first heavy rain, not after it.
Basement and cellar tanking in Gueliz: the job
For basement and cellar tanking in Gueliz, the protocol is proven: free diagnosis, quote within 24 hours, treatment of the cause then breathable finishes. Negative-pressure tanking mortar on walls and floor: the buried cellar stops drinking the ground’s water and becomes usable. Reference budget: 250–450 DH/m², written warranty included.
The Gueliz context
Gueliz, the new town laid out in the Protectorate era, is dense with 1930s–70s apartment buildings: ageing concrete slabs, technical roof terraces shared between co-owners, cracked parapets and original bituminous waterproofing that has often never been replaced. This is the district of co-ownership files: who pays, when to intervene, how to coordinate the top-floor flats. We manage the whole job there, from the shared diagnosis to the report for the building manager, with flame-free systems suited to occupied buildings. Gueliz summers regularly top 45 °C: black membranes baked by the sun crack open, and the first November rain exposes every defect.
We work in Gueliz every week: we know the local building types and we already know where to look for basement and cellar tanking — door thresholds, parapets, roof drains.
How we work: four steps
Free visit on site
We travel in Gueliz at no cost: we measure, we listen, and we propose the simplest, most durable solution.
Price locked in writing
The quote arrives within 24 hours and never moves once the works have started: no extras, no surprises.
Works with certified materials
Branded membranes, resins and primers, applied to the technical data sheet: a well-waterproofed terrace lasts 15 to 20 years, not two.
Testing, tidiness, warranty
We check the water run-off, deliver a clean site and leave the written warranty of the completed works.
What it costs: 2026 prices
| Work | Indicative price 2026 | Notes |
|---|---|---|
| Basement and cellar tanking | 250–450 DH/m² | turnkey, finish included |
| Below-ground wall waterproofing | 200–380 DH/m² | same service, different work |
| Wall-to-terrace junction sealing | 90–160 DH/m | same service, different work |
| Damp treatment before repainting | 80–160 DH/m² | same service, different work |
| Survey and written quote | free | no obligation, locked price |
2026 reference values for Marrakech and its region, installation included. The exact quote — free and firm — is set only after measuring on site.
Frequently asked questions: Basement and cellar tanking in Gueliz
Yes, with an adapted protocol: earth is neither concrete nor brick. Gentle injections or drainage depending on the case, and above all breathable finishes — never waterproof cement that traps moisture and destroys the wall.
The barrier is active as soon as the treatment ends, but the wall’s drying takes about one month per 2.5 cm of thickness. We give you a realistic calendar and the finishes to wait for before repainting.
Not if the cause is treated: salt neutralisation, barrier against rising damp, breathable finish. Treating saltpetre without treating the rising damp, on the other hand, guarantees its return at the first wet season.
It is the most profitable visit of your purchase: for a few hundred dirhams you know what the walls hide, with a written report that gives you real negotiating leverage — or saves you from a very bad surprise.
Trusted in Gueliz
“The terrace had been ponding for years: they rebuilt the falls, changed the drains and laid a proper membrane. No more ceiling stains.”
Mark T. · Gueliz“We called them for basement and cellar tanking, then called them back for my parents’ roof. Nothing more to add.”
Fatima Z. · Gueliz“A leak in the middle of the rainy season: fast response, temporary weatherproofing then the final repair at the quoted price.”
Charlotte V. · GuelizLet’s talk about it on site in Gueliz
Every terrace starts with a real measurement. Message us on WhatsApp: we come and look at your roof in Gueliz, free of charge and without obligation, and leave you a firm written price.
+39 351 481 6739