Water tank sealing in Al Amwaj Jeddah
Al Amwaj is a northern coastal district with modern villas, new residential compounds and plots still under construction. Salt spray and high humidity reach directly from the sea, and salt air attacks concrete and steel fast. Water tanks here face relentless corrosive pressure from the 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 Amwaj
Buildings and villas are relatively new but tanks show signs of corrosion and leaking within a few years of installation due to salt and humidity. The method is set out in full on how we approach Water tank sealing.
Concrete erosion from salt and sea moisture
Salt spray penetrates concrete and coatings faster than in inland areas. Exposed tanks suffer rapid surface wear and iron rust under the paint from salt-laden air.
New villas and compounds balance construction with maintenance
New villas and compounds under construction install fresh tanks but cannot provide lasting sealing from day one. Roof-exposed tanks offer a wide surface to salt, sun and moisture.
Coastal location accelerates deterioration
Proximity to the sea means higher salt concentration and faster tank water evaporation. Resealing is needed every two to three years instead of five in inland districts.
The character of Al Amwaj
Coastal area: high humidity and salt air through the year
Al Amwaj is a coastal district with new villas and developing plots, and tanks face a completely different environmental challenge than inland areas. Salt and sea air mean sealing must be stronger and recoating and inspection must happen far more often.
What we read before any material is opened
A coastal northern district between Obhur Road and Prince Abdulmajeed Road, with new villas, plots under development and beach resorts along the seafront.
Cracking in the wall
Internal surface shows fine cracks and wear at corners from rapid wet-dry cycles.
The floor to wall joint
Openings, inlets and pipe entries leak because salt eats old sealant and rubber seals fail.
The condition of the old lining
External walls show seeping from fine cracks and long fractures widened by thermal movement.
Sediment and scale
Moisture concentrates on internal surfaces and in cracks; salt remains after evaporation and accelerates corrosion.
The pipe entries
Foundation and floor beneath the tank suffer continuous seepage from moisture and salt leaking through walls.
The hatch and the vent
External coating and sealant become salt-saturated, losing effectiveness after one or two years under continuous coastal pressure.
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 Dhahban Sub-Municipality
Dhahban sub municipality is the northern coastal strip of Jeddah, running from the north bank of Sharm Obhur up to the old village of Dhahban and Salman Bay. Its districts are recently built, with owner occupied villas and apartments, beach resorts and chalets on the shore, and land subdivisions still being developed. Nearness to the sea keeps humidity high all year, irrigated lawns in villas, resorts and district parks hold water, Wadi Obhur and the vacant plots between buildings give rodents and reptiles shelter, and the old fishing village of Dhahban gives the far north a rural edge.
Questions about this district
Why did my new tank start leaking after just one year?
Salt and sea moisture attack paint and sealant fast. Roof-exposed tanks need strong sealing from the start and regular recoating.
Does sealing protect against salt and rust?
Yes, sealing stops salt and water entering the concrete. But salt continues attacking the outer surface, so additional protective paint recoating is needed annually or every two years.
Is a roofed tank better than an open-topped one?
Yes, covered tanks need less aggressive sealing. But even enclosed tanks in Al Amwaj need inspection because salt enters through vents and pipe openings.
Is there a tank type better suited to coastal areas?
Modern fibreglass or high-density plastic tanks resist salt better. But if you have a concrete tank, strong sealing and protective coating are essential.
What causes the very high humidity in coastal tanks?
Salt air, natural dew, and rapid evaporation leave high salt concentration. Small openings and cracks allow continuous moisture entry.
How often should a tank be inspected annually in Al Amwaj?
At least twice a year, once after summer and once before. Coastal areas need more frequent inspection than inland districts because deterioration is faster.
How much does water tank sealing in Al Amwaj 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 Amwaj.
Nearby districts we cover
Other services in Al Amwaj
Other services we provide to residents of Al Amwaj.
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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 Amwaj? Tell us what you saw and we will tell you what it needs
We reach Al Amwaj at a time we agree, and you get the full cost before we start.