Water tank sealing in Al Marwah Jeddah
Villas in Al Marwah sit close to Prince Majid Park, and families here often ask us to check the tank lining after a stretch of hot, dusty weather rather than wait for a visible leak. Roof tanks pick up fine dust blown off the park grounds, and that grit works into hairline cracks faster than plain heat alone.
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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 Marwah
Housing near the Al Marwah health centre and mosque is denser than the streets closer to the park, and tanks serving those closer-set buildings show wear sooner because more households draw from the same line. The method is set out in full on the full Water tank sealing page.
Dust from Prince Majid Park settles on roof tanks
Villas nearest the park collect windblown dust and dry leaf litter on the tank lid and around the lid seal. That grit mixes with condensation and works into the seam over a season, well before the lining itself shows heat damage.
Multiple pipe connections and high network pressure
Modern apartment buildings have multiple inlet and outlet lines. High network pressure creates stress at the joints. The seal between pipe and tank wall is the first failure point.
Heavy mineral water deposits build on the lining
Jeddah's water is rich in minerals and salts. White deposits accumulate inside, adding weight to the lining and causing gradual fracture.
The character of Al Marwah
Mixed district: shops at street level with homes above them
Al Marwah is mixed, with new villas and apartment buildings, so tanks are varied-roof-mounted, ground-mounted and side-mounted. Villas need fast treatment because exposed surfaces face heat and rare rain, while apartments need precise work because multiple connections are complex.
What we read before any material is opened
A modern residential quarter in northern Jeddah between Prince Majid Road and Al Nuzhah Road, bordered by Al Safa and Al Rabwah, with a mix of new villas and apartment buildings.
Cracking in the wall
Roof tanks near Prince Majid Park pick up dust and plant debris that settles around the lid seal rather than the corners first.
The floor to wall joint
The main inlet or outlet pipe joint is the first leak point because network pressure concentrates there.
The condition of the old lining
Lining failure starts at the floor-to-wall junction where sediment and stagnant water collect.
Sediment and scale
Buildings clustered around the Al Marwah health centre share tighter plot lines, so a leaking tank there is more likely to be reported by a neighbour than found by the owner.
The pipe entries
White and rust-coloured mineral deposits cover the internal surface, pressing on the lining and causing localised fracture.
The hatch and the vent
Final testing requires filling the tank and holding pressure for several days to confirm no seepage from corners or joints.
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 Airport Sub-Municipality
The Airport sub-municipality covers some of the oldest established districts of northern Jeddah, gathered around King Abdulaziz International Airport between Madinah Road, King Fahd Road and Prince Majid Road. The stock is villas, single family houses and apartment blocks built decades ago, many served by ageing water and sewer lines. Commercial streets such as Quraish, Sari and Sultan bin Salman are lined with restaurants, furnished flats and popular markets. Dense commercial kitchens, worn pipework and the gaps in older buildings give cockroaches and rodents steady food and shelter, and the high resident population keeps that pressure constant through the year.
Questions about this district
Does the park nearby make tanks dirtier faster?
Yes, villas closest to Prince Majid Park collect more dust and leaf debris on the tank lid than blocks further from it. We check the lid seal on those tanks first.
Do roof-mounted tanks exposed to heat need different treatment?
Yes. Heat causes repeated seasonal expansion. We focus on corners and joints during repair because they are the weakest points.
Do salt and mineral deposits affect tank integrity?
Heavily. Deposits weigh on the lining and cause partial cracks through which water seeps from underneath.
Does every tank need complete emptying before repair?
Yes. We empty it fully so we can see every crack and weak point on the internal surface.
How do we handle the pipe joint in a modern tank with multiple inlets?
We inspect each joint carefully. If loose or failed we remove it, re-seal with a waterproofing compound before applying the new lining.
Do safety and sterilisation standards differ in Al Marwah?
No, but the water here is more mineral-rich so we sterilise more carefully and ensure no sediment remains before refilling.
How much does water tank sealing in Al Marwah 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 Marwah.
Other services in Al Marwah
Other services we provide to residents of Al Marwah.
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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 Marwah? Tell us what you saw and we will tell you what it needs
We reach Al Marwah at a time we agree, and you get the full cost before we start.