Water tank sealing in Harat Al Sarahin Jeddah
Harat Al Sarahin is an old quarter in Thuwal with houses built from mud and stone, where related families cluster their homes together in the manner of coastal villages. Tanks here are very old and made of weak materials; leaks are constant and water seeps from every joint and gap.
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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 Sarahin
Houses and tanks here are very old and suffer natural deterioration; mortar between stones has worn away and cracks are present in nearly every tank. The method is set out in full on how we approach Water tank sealing.
Very weak stone and mud tanks
Most tanks were built decades ago from natural stone and weak mortar. Mortar has eroded from moisture, salt and ground movement, cracks are large and leaks are continuous.
Closely built houses with tanks on adjacent roofs
Traditional houses are built tightly together and tanks are close to each other on nearby roofs. Water leaking from one tank may affect the neighbour, so sealing must be precise.
Structural instability and repeated repairs
Houses and tanks need repeated repairs because materials are weak. Cracks return quickly and tanks do not stay sealed for long.
Harat Al Sarahin on the map
Harat Al Sarahin sits about 0.5 km from Harat Al Baharah and about 0.5 km from Harat Al Amir.
Open in Google MapsWhat we read before any material is opened
An old quarter in Thuwal containing traditional popular houses built from mud and stone, where families gather in the traditional way of coastal villages. Buildings are being gradually replaced due to poor condition, and families maintain strong kinship ties.
Cracking in the wall
Radial and random cracks cover the tank surface, and mortar between stones has completely eroded and needs rebuilding.
The floor to wall joint
Pipe joints are very old and loose, and water leaks around pipes due to movement and sagging.
The condition of the old lining
Internal tank walls are rough and irregular due to natural stone and weak mortar, and water gets trapped in voids.
Sediment and scale
Moisture penetrates all tank walls, not just through cracks; moisture seeps through the material itself.
The pipe entries
The tank floor is very weak and the soil beneath it moves; the tank may shift or settle under pressure.
The hatch and the vent
Previous paint and sealant are absent or completely flaked away, and the inner surface has no protective coating.
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 Harat Al Sarahin
Mixed district: shops at street level with homes above them
Traditional and old popular houses mean tanks are made of very weak materials and need special understanding. Sealing alone is not enough; the original material must be repaired first, and replacement may be better than repeated repairs. Working with closely-clustered families requires coordination and clear explanation because tanks are close to neighbours.
Questions about this district
Can a mud and stone tank be fixed by sealing alone?
Very difficult. The material itself is weak and sealing may not address material deterioration. Full structural repair may be needed before sealing.
Why do leaks return quickly in this quarter?
Materials are very old and mortar has completely eroded. Even if cracks are sealed, the original material is weak and re-cracks fast.
Do closely built tanks need special treatment?
Yes. Water leaking from one tank may transfer to the neighbour's house. Shared walls must be checked carefully and sealed thoroughly.
Does family clustering affect treatment method?
Yes. Treatment must be coordinated with neighbours. If only one tank is fixed, water may leak from adjacent tanks.
Is cost the main reason to choose repair over replacement?
Repeated repairs in weak materials can be costlier than replacement. A new tank may be cheaper than multiple sealing attempts.
Can water supply continue while repairs happen?
In some cases yes, if cracks are limited to one area. But most repairs require full tank drainage for good work.
How much does water tank sealing in Harat Al Sarahin 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 Sarahin.
Nearby districts we cover
Other services in Harat Al Sarahin
Other services we provide to residents of Harat Al Sarahin.
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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 Sarahin? Tell us what you saw and we will tell you what it needs
We reach Harat Al Sarahin at a time we agree, and you get the full cost before we start.