Water tank sealing in Al Nakhil Jeddah
Al Nakhil lies in eastern Jeddah between Palestine Road and the King Abdullah branch road, with apartment buildings, villas and recent housing schemes. Buildings range from old to new construction, and tanks vary in age and condition. Tanks here face fluctuating groundwater levels and damp soil, and changes in ground level stress older tanks.
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Potable-rated materials
Linings and disinfectants cleared for drinking water tanks, not general-purpose products.
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You get the downtime first
How many hours the tank is out of service, told before we start rather than after we finish.
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A first-draw flush
We run the first draw off after refilling, and the tank is not handed back until the water runs clear.
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Ground and roof tanks
Villas, apartment blocks and premises that need a written record of each visit.
Why the job is different in Al Nakhil
Tanks in Al Nakhil face high moisture from nearby groundwater, and owners report water seepage especially during winter and rainy seasons. The method is set out in full on Water tank sealing in detail.
Tanks in modern apartment blocks
Modern buildings throughout Al Nakhil are built on current designs with overhead and underground tanks depending on the project. These tanks carry heavy water pressure and may crack from sustained heavy use and seasonal expansion.
Villas with deep underground tanks
Villas in Al Nakhil rely on deep underground tanks beneath ground level. Nearby groundwater causes external pressure against tank walls, weak concrete cracks, and contaminated water enters.
Intermediate tanks in housing schemes
Modern housing schemes have intermediate tanks that distribute water to multiple towers. These tanks face varying pressure and require strong sealing at pipe joints and entry points.
Al Nakhil on the map
Al Nakhil sits about 3 km from East Al Sulaymaniyah and about 3.5 km from Al Wahah.
Open in Google MapsWhat we read before any material is opened
A mixed district in eastern Jeddah between Palestine Road and the King Abdullah branch road, containing apartment buildings, villas and modern housing schemes. It borders Al Wahah to the north, Al Naseem to the west and Abruq Al Raghamah to the south.
Cracking in the wall
Inspection of deep cracks in underground tank walls, especially on walls facing external pressure from groundwater.
The floor to wall joint
Testing of pipe joints and entry points where supply and drainage lines enter, as these are prime leak sites under external pressure.
The condition of the old lining
Assessment of internal surface and concrete condition, determining moisture levels and decay from groundwater exposure.
Sediment and scale
Review of any existing sealing and whether it failed from external pressure or seasonal expansion.
The pipe entries
Search for groundwater staining on the foundation and external tank walls.
The hatch and the vent
Pressure testing and measurement of any leakage before new sealing work begins.
How we work
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1
Inspect with the tank empty
We drain it and read the surface dry: whether the water leaves through a crack, a joint or a pipe collar, and what the outer face of the wall and the ceiling below are telling us. A level test with the valves closed separates a leaking tank from leaking pipework.
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2
Clean and prepare the substrate
Sediment out, a high pressure wash, the loose old lining and the weak surface layer of the concrete taken back, then dried. The material grips sound substrate and nothing else.
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3
Make the cracks and joints good
Cracks are chased out and filled with a repair mortar, a cove is formed where the floor meets the wall, and every pipe collar is treated on its own.
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4
Lining, fill test, sterilisation
Successive coats, each run across the one beneath it, on the face the water touches. Then a full cure, a fill with the level watched, and sterilisation with the first fill run to waste before the tank returns to use.
What water tank sealing includes
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Finding where the water leaves
Carried out drained and dry: cracks, joints, pipe collars and the outer face of the wall.
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Draining and sediment removal
The last of the water and the settled layer on the floor come out, because a lining does not stick over sediment.
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Cracks and joints made good
The crack opened and filled, a cove formed at the floor to wall junction, and each pipe entry worked separately.
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Lining coats on the water face
More than one coat, each crossing the one below, in material made for drinking water tanks rather than roof waterproofing.
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Curing, fill test and sterilisation
The material is left to cure, the tank is filled and the level watched, then sterilised and the first fill run to waste. How long the cure takes follows the material and the weather, and we tell you before the date so you can plan around the supply.
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A follow-up level check
We come back once it is in service to read the level and check the outer face, because any remaining loss shows up then rather than on the day of the work.
The character of Al Nakhil
Mixed district: shops at street level with homes above them
Al Nakhil is a mixed district combining villas, apartment blocks and modern housing schemes, meaning tank designs and conditions vary widely. Underground tanks here face significant groundwater pressure, so sealing must be robust and external to resist continuous pressure.
Questions about this district
Why do underground tanks in Al Nakhil leak especially in winter?
Groundwater rises during winter and rainy seasons. External pressure on tank walls increases and weak concrete cracks, allowing contaminated water to enter.
Does modern tank design reduce leakage problems?
Modern designs are better, but if initial sealing was incorrect, leakage will occur. Underground tanks need strong external sealing from the start.
What drives the cost of sealing a large underground tank in Al Nakhil?
Cost depends on tank size, concrete condition and groundwater depth. Deeper, larger tanks need stronger sealing.
Can a tank be sealed externally without complete emptying?
No. The tank must be empty to seal the internal surface. We need full access to all walls and floor.
What if groundwater level is higher than the tank bottom?
In that case we apply strong external sealing and may need to drain water around the tank to reduce external pressure.
Do modern housing schemes need less maintenance?
Modern schemes are better if initial sealing was correct. But after 5 to 10 years, even new tanks need inspection and maintenance.
How much does water tank sealing in Al Nakhil cost?
It is set after the inspection, because the price follows the type of infestation, the size of the space, how far it has spread and the number of visits it needs. Send a photo and a description on WhatsApp and we will give you an estimate before we reach Al Nakhil.
Nearby districts we cover
Other services in Al Nakhil
Other services we provide to residents of Al Nakhil.
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Water tanks
Water tank cleaning
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Water tanks
Water tank sterilization
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Water tanks
Tank leak repair
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Residential
Cockroach control
Need water tank sealing in Al Nakhil? Tell us what you saw and we will tell you what it needs
We reach Al Nakhil at a time we agree, and you get the full cost before we start.