Water tank sealing in South Obhur Jeddah
South Obhur sits directly on the Obhur Creek shoreline, and salt water and coastal humidity damage water tank surfaces rapidly. Tanks here experience accelerated corrosion from salt and moisture, and fine cracks appear faster than in inland quarters. Proper sealing protects the tank from salt-water ingress and extends its life by years.
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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 South Obhur
Buildings here are relatively modern and tanks are often roof-mounted, but the high salt content in sea air and extreme humidity accelerate concrete surface decay and fine cracks develop quickly. The method is set out in full on how we approach Water tank sealing.
Sea salt penetrates via soil and air
Salt in the air and soil reaches tank walls from outside and inside. Coastal humidity causes rust within the concrete matrix and weakens it, and cracks form faster than in inland areas.
Villas and chalets sustain heavy water demand
These buildings use large volumes of water for ornamental pools, landscaped gardens and frequent bathing. Continuous pressure on the tank accelerates leak formation and mechanical cracking.
Surface-mounted tanks exposed to salt air
Most tanks here sit on roof level or close to the air intake. Direct exposure to sun, salt and humidity burns the concrete surface and causes accelerated corrosion.
The character of South Obhur
Coastal area: high humidity and salt air through the year
A coastal location means tanks face salt and salinity stress absent in inland quarters. Sealing must be stronger and offer thicker protection against continuous salt pressure, and inspection cycles must be shorter.
What we read before any material is opened
A coastal district on the South Obhur shoreline, stretching from the South Obhur corniche to Madinah Road, containing villas, resorts and rest houses distributed along the waterfront and inland zones.
Cracking in the wall
Salt drift from air and soil concentrates on the outer tank surface and corrosion begins from the exposed layer.
The floor to wall joint
Fine cracks appear first at the floor-to-wall joint and around pipe entries where salt concentration is highest.
The condition of the old lining
Very high humidity causes rust within the concrete reinforcement that expands inward, creating pressure that splits the concrete.
Sediment and scale
Salt water may seep from pipe joints or fine cracks, causing additional damage at the waterline.
The pipe entries
Continuous pressure from heavy use accelerates the growth of existing cracks and triggers leaking ahead of schedule.
The hatch and the vent
Annual inspection is essential here because cracking and corrosion develop faster than in inland quarters due to constant salt and moisture exposure.
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 Obhur Sub-Municipality
Obhur sub-municipality runs along Jeddah's northern shoreline from Al Shati up to Obhur Creek. It mixes large villas and gated compounds with busy commercial spines of restaurants, cafes, markets and hotels. Sea humidity is high for most of the year and salt laden breezes keep timber and render damp, while irrigated gardens and lawns surround the corniche and the villa plots. Standing irrigation water, dense planting and food waste from the hospitality strip suit cockroaches, mosquitoes and ants, and the chalets and rest houses scattered along the creek stand empty for long spells, which lets insects and rodents settle undisturbed.
Questions about this district
Is sea salt the main cause of tank cracks in South Obhur?
Yes. Salt penetrates concrete walls and causes rust within the reinforcement and weakening. High humidity speeds this process significantly.
How long between first fine cracks and active leaking?
Fine cracks may exist for months before noticeable leaking starts. Sealing stops the process before it reaches that stage.
Does seawater itself damage the tank if it enters?
Yes. Salt leaves deposits on the inner surface and causes additional corrosion and damages the sealing material.
Why do new tanks here need sealing quickly?
Salt and humidity begin damage in year one. Early sealing protects the surface before fine cracks develop.
Does sealing protect against salt trapped in the soil?
Yes. The waterproof coating creates a barrier between concrete and salt in both soil and air.
Does tank material type (fibreglass or concrete) change the sealing approach?
Concrete tanks are standard here and need regular sealing. Fibreglass is less affected but leaks may appear at joints and pipe entries.
How much does water tank sealing in South Obhur 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 South Obhur.
Nearby districts we cover
Other services in South Obhur
Other services we provide to residents of South Obhur.
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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 South Obhur? Tell us what you saw and we will tell you what it needs
We reach South Obhur at a time we agree, and you get the full cost before we start.