Water tank sealing in Al Murjan Jeddah
Al Murjan is a small coastal district on Jeddah's north corniche with villas and apartment buildings facing the sea directly. Tanks here face double pressure from salt air, high sea humidity and salt spray that can coat tanks during storms. Corrosion begins on the outer surface then penetrates the concrete.
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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 Murjan
Buildings lie very close to the sea and salt infiltrates concrete and metal rapidly. Tanks deteriorate faster here than in inland areas. The method is set out in full on what Water tank sealing involves.
Salt air corrodes concrete from outside
Sea humidity and airborne salt deposit on the tank surface and penetrate concrete through fine pores. Within a few years deep cracks and leaks appear.
Salt spray from sea storms
Storms and winds carry salty sea spray onto roof tanks. Salt dries concrete and causes cyclic expansion and contraction that breaks down the lining.
High humidity accelerates corrosion and biofouling
Coastal humidity exceeds 80-90 percent year-round. Weak lining allows moisture entry, causing algae and fungal growth and biological corrosion.
Landmarks of Al Murjan
Al Murjan lies on the north corniche between King Abdulaziz Road and the sea, with Al Murjan Mall and the main corniche road as anchor landmarks defining the service zones.
- Al Murjan Street
- North Corniche Road
- King Abdulaziz Road
- Al Murjan Mall
What we read before any material is opened
A small coastal district on the north corniche between King Abdulaziz Road and the sea, with villas and apartment buildings directly facing the waterfront. Al Murjan Street and the corniche road are its main thoroughfares.
Cracking in the wall
External surface inspection reveals white salt deposits and cracks caused by salt action.
The floor to wall joint
Joint and crack inspection identifies points where salt and sea moisture enter.
The condition of the old lining
Internal lining inspection detects algae and fungi from high humidity.
Sediment and scale
Coastal humidity above 80 percent accelerates algal and fungal growth on water and lining surfaces.
The pipe entries
Salt penetrates deep into cracks causing cyclic expansion and contraction in lining and concrete.
The hatch and the vent
Salt spray from storms leaves salt layers on the outer surface requiring regular cleaning.
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
Does airborne salt affect interior villa tanks or only exposed ones?
Both. Salt penetrates from the outer surface then reaches the water through cracks, altering taste and purity.
Why do Al Murjan tanks corrode faster than those in Al Basatin?
Al Murjan lies on the seafront and salt and sea humidity are far higher. Concrete faces constant chemical assault from salt.
Does tank sealing protect against salt spray?
Yes. Modern lining forms a protective barrier blocking salt and moisture from entering and damaging the concrete.
How often do Al Murjan tanks need resealing?
In coastal areas like Al Murjan, sealing may need renewal every 7-10 years due to sustained salt pressure.
Does algae and fungal growth in a tank signal weak sealing?
Yes. Algae or fungus means moisture is entering from outside and the seal has failed.
What is the difference between salt corrosion and regular moisture damage?
Salt causes faster, deeper corrosion and breaks the lining more severely. Moisture alone is slower, but salt multiplies the damage.
How much does water tank sealing in Al Murjan 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 Murjan.
Nearby districts we cover
Other services in Al Murjan
Other services we provide to residents of Al Murjan.
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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 Murjan? Tell us what you saw and we will tell you what it needs
We reach Al Murjan at a time we agree, and you get the full cost before we start.