Water tank sealing in Harat Al Kanadirah Jeddah
Harat Al Kanadirah in Thuwal depends on storage tanks to hold water brought by tanker trucks, and the older tanks here face salt spray from the Red Sea air and seepage from damp soil. Mixed housing of old and new buildings means tanks of all ages and conditions, with cracks and joints allowing salt and debris to enter.
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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 Harat Al Kanadirah
Residents rely on storage tanks because water arrives by tanker truck, and tanks here suffer from sea salt exposure and high humidity from proximity to the shore. The method is set out in full on the full Water tank sealing page.
Old tanks in traditional houses
Traditional homes in the quarter hold tanks built decades ago from simple cement. Deep cracks and weak joints between floor and wall allow moisture and salt to enter.
Sea salt and coastal humidity
Proximity to the Red Sea means high humidity and salt-laden air that seeps into tanks. Stored water becomes contaminated through cracks and external seepage.
Tanker water needs secure storage
Residents buy water from tankers and store it for long periods. Weak tanks do not preserve water quality and may cause illness.
The character of Harat Al Kanadirah
Mixed district: shops at street level with homes above them
The quarter mixes old traditional houses with modern homes, meaning tanks of widely different ages and conditions. Old tanks need full internal and external sealing, while newer tanks may only need repair of weak points.
What we read before any material is opened
A mixed residential quarter in Thuwal on the Red Sea coast at the far north of Jeddah governorate, with older traditional houses alongside modern concrete homes. The Thuwal wadi defines the south, the university campus closes it to the north, and the Jeddah to Madinah road runs along the east.
Cracking in the wall
Deep cracks in the floor allow seepage of salty water from damp soil beneath the tank.
The floor to wall joint
Floor-to-wall joints are weak in old tanks here, and salt and external moisture enter through them.
The condition of the old lining
Pipe entry points were not sealed properly in old tanks, allowing leakage around the pipes.
Sediment and scale
High humidity from coastal proximity causes gradual breakdown of the outer cement layer.
The pipe entries
Tank floor collects sand and debris that entered through cracks, reducing storage capacity.
The hatch and the vent
Tank sterilisation after sealing is essential because stored water may have been contaminated by previous cracks and seepage.
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.
What is different about Thuwal Sub-Municipality
Thuwal sub municipality is a small fishing town on the Red Sea coast at the far northern edge of Jeddah governorate. Its old quarters are closely packed popular and mud built houses on narrow streets, with newer low rise concrete homes from the town's development programme beside them. Sea humidity stays high all year, the fishing harbour and the corniche form its seafront, water arrives by tanker so household tanks are everywhere, and the town sits on Wadi Thuwal, ringed by open ground and by the irrigated green campus of King Abdullah University of Science and Technology.
Questions about this district
Why do tanks age faster here than in other places?
Sea salt and coastal humidity oxidise steel and weaken cement. Proximity to the shore means continuous salt exposure.
Does a slow leak from the tank mean I need full sealing?
Yes. A slow leak may accelerate quickly. Full sealing prevents contamination and loss.
How do we ensure stored water is safe after sealing?
We wash the tank after sealing and sterilise it before it is refilled with fresh water.
Do fine cracks in the floor and walls need treatment?
Yes. Even fine cracks allow salt and debris to enter. Full sealing covers them.
Does sealing protect against external salt?
Good sealing creates a barrier between the tank and the salty soil below, but needs periodic maintenance.
How often does a tank need resealing?
It depends on sealing quality and salt exposure. Usually every 5 to 10 years depending on condition.
How much does water tank sealing in Harat Al Kanadirah 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 Harat Al Kanadirah.
Nearby districts we cover
Other services in Harat Al Kanadirah
Other services we provide to residents of Harat Al Kanadirah.
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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 Harat Al Kanadirah? Tell us what you saw and we will tell you what it needs
We reach Harat Al Kanadirah at a time we agree, and you get the full cost before we start.