Water tank sealing in Al Quzayn Jeddah
Al Quzayn is the southernmost coastal strip of Jeddah, and its tanks face specific challenges from salt and very high humidity. Salt water seeps through cracks and joints, and coastal corrosion accelerates the breakdown of the internal lining. Sealing here must stop salt and moisture entering from the harsh coastal environment.
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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 Quzayn
Buildings here are relatively old and coastal facilities face very high moisture and sea salt carried on the sea breeze year-round. The method is set out in full on how we approach Water tank sealing.
Sea salt and moisture penetrate tank surfaces
The coastal environment means very high humidity and salt particles suspended in the air. Exposed or poorly sealed tanks allow salt entry through cracks, joints and the surface itself. Old linings corrode quickly from continuous exposure.
Wall-to-floor joints are vulnerable to leakage
Large temperature swings between sun and sea cause concrete to expand and contract. Joints between floor and walls crack and allow salt water and moisture to enter. Repairing these joints is one of the most critical sealing steps.
Sewage works and factories nearby increase moisture and contamination
The treatment plant close by raises soil and air moisture. The iron factory produces steam and additional moisture. Open tanks face direct impact from these pollutants.
The character of Al Quzayn
Coastal area: high humidity and salt air through the year
The coastal location means tanks face a very harsh environment of salt, moisture and steam. Sealing must be thicker and stronger than inland sites, and may require more frequent maintenance and reapplication.
What we read before any material is opened
A southern coastal quarter on the Jeddah Southern Corniche, beginning as a small seaside village. Bounded by King Faisal Road to the north and the corniche to the west, it holds seaside rest houses and an open beach near Al Seef Beach, along with a sewage treatment works and an iron factory.
Cracking in the wall
The outer concrete surface is exposed to sea salt and high moisture, requiring deep cleaning and removal of all salt deposits before lining is applied.
The floor to wall joint
Fine cracks spread through old tank walls due to heat expansion and salt corrosion, and must be filled with special mortar before sealing.
The condition of the old lining
Joints between the floor, walls and corners are primary entry points for moisture and salt, requiring precise and deep treatment.
Sediment and scale
Soil and air moisture are very high due to the coastal location and nearby treatment plant, demanding a lining capable of stopping both water vapour and salt water.
The pipe entries
Pipes and entry points need special sealing because salt water leaks around old pipe collars, and the joints between pipes and walls are very weak.
The hatch and the vent
Salt taste, staining and corrosion marks in the water signal salt ingress, and full pre-sealing inspection identifies all weak points.
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 South Sub-Municipality
The South sub municipality runs from the edge of Old Makkah Road down to Al Khumrah and the southern corniche. Dense residential districts sit beside new subdivisions such as Al Sanabil and Al Taawun, warehouse fringes such as Al Saruriyah and Al Sarawat, and an old seaside settlement at Al Quzayn. Open stormwater channels cross the housing, and the warehouses, the vegetable and livestock markets and the nearby Islamic Port and Industrial City give pests shelter, food and year round humidity. Pressure is greatest in the older quarters, where drainage networks are ageing.
Questions about this district
Does sea salt enter the tank from the air or the soil alone?
It enters from both. Sea air carries salt spray that settles on the outer surface, and salt-saturated soil delivers it from below and the sides through cracks and joints.
Why does the lining degrade faster in Al Quzayn than inland areas?
Continuous salt and moisture cause faster chemical corrosion. Concrete reacts with salts and loses strength more quickly than in non-coastal zones.
Is crack repair alone enough or must the entire surface be sealed?
Crack repair alone is not enough. The entire surface must be coated with a waterproof lining to stop salt and moisture from all directions.
How often does a coastal tank need resealing?
It depends on lining type and exposure. In Al Quzayn, resealing may be needed every 5 to 7 years because the coastal environment is very harsh.
Do covered tanks need less sealing than open ones?
Yes, covered tanks face less salt and sun exposure. But if the roof is old or leaks, moisture enters from above and the sides.
Does the sewage treatment plant nearby affect tank contamination?
It may raise soil and air moisture. If pipes near the tank leak, they may introduce extra pollution. Good sealing protects against this.
How much does water tank sealing in Al Quzayn 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 Quzayn.
Nearby districts we cover
Other services in Al Quzayn
Other services we provide to residents of Al Quzayn.
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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 Quzayn? Tell us what you saw and we will tell you what it needs
We reach Al Quzayn at a time we agree, and you get the full cost before we start.