Water tank sealing in Harat Al Shuruq Jeddah
Harat Al Shuruq contains old popular houses and newer low-rise apartment buildings, and tanks here suffer rapid leaks due to daily temperature swings between sun and night. Water seeps from cracks in floors, walls and pipe entry joints, and treatment must account for the mixed building stock of the quarter.
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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 Shuruq
Tanks here face direct weather exposure, and thermal expansion and contraction from intense daytime heat and cool nights causes cracks in old concrete tanks faster than in shaded inland areas. The method is set out in full on what Water tank sealing involves.
Old popular houses and stone tanks
Many traditional houses here were built decades ago with stone and clay tanks. Cracks develop quickly in these materials and leaks persist even with small water volumes.
Newer buildings and weak concrete tanks
The newer low-rise apartment blocks have concrete tanks on roofs. Salt water and airborne salt accelerate concrete deterioration and direct sun exposure causes rapid cracking.
Thermal expansion from surrounding desert
Open ground and desert around the quarter mean temperatures spike in daytime and drop at night. Large temperature swings crack water tanks quickly.
Landmarks of Harat Al Shuruq
Access to Harat Al Shuruq runs via the Madinah highway from the north, and Wadi Thuwal bed marks the southern boundary of the quarter. The open desert ground surrounding the district is the main geographic reference point for locating our work.
- Jeddah Madinah Road
- King Abdullah University of Science and Technology
- Thuwal Cultural Centre
What we read before any material is opened
A mixed residential quarter in Thuwal combining traditional popular houses with newer low-rise buildings, surrounded by open ground and Wadi Thuwal bed to the south, and the Madinah highway to the north.
Cracking in the wall
Radial cracks start from the floor centre and spread outward due to pressure and continuous thermal expansion.
The floor to wall joint
Wall-to-floor joints are very weak in old tanks because the original work lacked proper sealing, and water leaks through quickly.
The condition of the old lining
Pipe entries and exits are surrounded by fine cracks because pipes move with thermal expansion while concrete stays fixed.
Sediment and scale
Moisture seeps through every small gap and internal walls begin to absorb water; salt from the water deposits on the inner surface.
The pipe entries
The tank floor deteriorates quickly as water and sand settle there, and friction wears the protective layer.
The hatch and the vent
Old internal paint flakes quickly because thermal expansion lifts it from the concrete, and cracks beneath allow water ingress.
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 crack faster in Harat Al Shuruq than in the city?
Direct sun and desert exposure cause very large temperature swings. Constant thermal expansion and contraction weakens concrete and stone rapidly.
Does airborne salt affect tanks here?
Yes. Salt drifts from the sea and desert and accelerates concrete and internal steel corrosion. Cracks widen faster than in inland areas.
Can an old stone tank be repaired or must it be replaced?
If cracks are limited, full sealing can work. But if the material itself is very weak, replacement may be better.
How often should tanks be checked in this quarter?
Sun-exposed areas need inspection every six months. Old tanks need more frequent monitoring.
Does tank sealing prevent new cracks?
Sealing protects the water-facing surface but cannot stop thermal expansion. If large temperature swings continue, new cracks may appear later.
Do traditional and modern buildings need different repair approaches?
Yes. Traditional houses may need tank material repair before sealing. Modern buildings need concrete assessment and evaluation of protective layer thickness.
How much does water tank sealing in Harat Al Shuruq 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 Shuruq.
Nearby districts we cover
Other services in Harat Al Shuruq
Other services we provide to residents of Harat Al Shuruq.
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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 Shuruq? Tell us what you saw and we will tell you what it needs
We reach Harat Al Shuruq at a time we agree, and you get the full cost before we start.