Water tank sealing in Al Rayyan Jeddah
Al Rayyan is a residential district east of the Haramain expressway bounded by the air base bridge to the north and Al Kawthar to the south. Its stock consists mostly of Al Thuraya and Al Sultan schemes-apartment blocks with some villas on a regular wide street grid. Tanks here are mixed: rooftop units and basement tanks, and long pump lines suffer pressure and thermal stress.
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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 Rayyan
Tanks in Al Rayyan vary in size and material, buildings are relatively modern and tank maintenance is moderate, leaks appear due to pump pressure and long piping runs. The method is set out in full on what Water tank sealing involves.
Long pump lines and high system pressure
Al Rayyan sits on higher ground and homes are distant from the water source. Pump lines are long and pressure is high to reach rooftops. This pressure causes cracks in tanks and pipes.
Large rooftop tanks serving multi-storey apartment blocks
Al Thuraya and Al Sultan schemes have tall buildings needing large rooftop tanks. Weight and pressure cause foundation settlement and cracks start at corners.
Modern basement tanks with continuous pump systems
Some newer buildings have basement tanks with electric pumps running all day. Continuous pumping puts cyclic stress on tank walls and pipes.
The character of Al Rayyan
Apartment district: residential blocks, repeated floors and shared entrances
Al Rayyan tilts toward apartments, with large tanks under high pump pressure. Treatment must account for dynamic pressure, not just static load. Lining must withstand repeated stress cycles.
What we read before any material is opened
A modern planned residential district east of the Haramain expressway between the air base bridge and Al Kawthar, mostly apartment buildings with some villas on a regular wide street network, bounded by Umm Hablain to the east and Briman to the south.
Cracking in the wall
Leaks from pipes and flanges are common because high pressure strains connections and seals.
The floor to wall joint
Cracks start from the tank floor and corner walls where pressure is highest and stress concentrates.
The condition of the old lining
Moisture around the tank signals continuous internal pressure and ongoing leak.
Sediment and scale
Water discoloured with sand or sediment signals air entry from pipes or internal corrosion.
The pipe entries
Modern tanks need careful inspection because continuous pumping may have caused undetected damage.
The hatch and the vent
Desert climate and high heat cause water and tank expansion, pressure rises in summer.
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 Briman Sub-Municipality
Briman sub-municipality sits east of the Haramain expressway on Jeddah's north eastern edge. Its older quarters are planned grids of villas and walk-up flats, while the outer districts are new subdivisions still being built out. Seasonal wadis such as Wadi Umm Hablain and Wadi Al Asla cross the area, groundwater runs high in places, and drainage networks in the newer districts are incomplete, so soil around foundations stays damp. Vacant plots, live building sites and constant dust give crawling insects and rodents easy routes into homes, and the food outlets along the main arteries keep them supplied.
Questions about this district
Why does leaking start from a rooftop tank after a period of heavy use?
High pressure from pumps puts cyclic stress on tank walls. Fine cracks appear from dynamic pressure, not just static load.
Are basement tanks better than rooftop tanks in Al Rayyan?
Each has trade-offs. Basement tanks avoid high rooftop pressure but need powerful pumps. Rooftops give natural pressure but face direct sun.
What happens if a leak develops in a tank serving a multi-storey building?
It may affect several units and the floor below. Damage spreads quickly and repair needs cooperation from multiple owners.
Is the concrete type in Al Rayyan different from older areas?
Yes. Al Rayyan is modern and concrete is relatively stronger. But high pump pressure can damage even strong concrete over time.
How often do Al Rayyan tanks need sterilization after sealing?
Once after lining is complete. But annual sterilization is recommended because continuous pumping may introduce sediment.
Can we repair a rooftop tank without cutting water to the whole building?
Partially possible if you have a backup tank. For full sealing and lining, we must empty completely and may need a brief shutdown.
How much does water tank sealing in Al Rayyan 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 Rayyan.
Nearby districts we cover
Other services in Al Rayyan
Other services we provide to residents of Al Rayyan.
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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 Rayyan? Tell us what you saw and we will tell you what it needs
We reach Al Rayyan at a time we agree, and you get the full cost before we start.