Water tank sealing in Rai Adhakhir Makkah
Rai Adhakhir is a hillside district on a mountain pass northeast of the Grand Mosque, with streets climbing from Al Shisha and Al Maabdah towards Al Khansa. Tall apartment blocks and small hotels for seasonal visitors are built on the slopes. Tanks sit on high rooftops exposed to strong winds and intense thermal extremes.
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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 Rai Adhakhir
Most buildings are tall apartment blocks constructed on hill slopes and ridges, with tanks mounted on very high rooftops exposed to intense wind and heat stress. The method is set out in full on Water tank sealing in detail.
Very high tanks on rooftops elevated on hillsides
Apartment blocks on Rai Adhakhir slopes are built at different elevation levels. Tanks sit on very high rooftops and rely on tall pressure heads to distribute water to lower-level apartments.
Strong winds and intense heat attack the lining
The hilltop location exposes tanks to powerful winds and intense heat. Wind accelerates lining erosion and heat causes rapid expansion-contraction cycles and deep cracking.
Seepage runs rapidly downslope into lower buildings
Because of the slope, water leaking from a tank flows downhill quickly and enters the basement of the building below. Seepage can undermine the lower building's foundation or spill onto the street.
Rai Adhakhir on the map
Rai Adhakhir sits about 1 km from Al Khansa and about 1.5 km from Al Jumayzah.
Open in Google MapsWhat we read before any material is opened
A hillside district on a mountain pass northeast of the Grand Mosque, with streets rising from Al Shisha and Al Maabdah towards Al Khansa. Al Ijabah Mosque on Al Ijabah Street is its most prominent landmark.
Cracking in the wall
Cracks develop quickly due to high pressure from tank elevation, intense heat and strong winds.
The floor to wall joint
Joints around pipe entries leak due to high water pressure and movement from strong winds on the high roof.
The condition of the old lining
The tank's inner surface is corroded by pressurised water, mineral deposits and minerals from deep artesian wells.
Sediment and scale
Humidity is high on mountain slopes and winds may introduce external moisture or cause rapid water loss by evaporation.
The pipe entries
The primary leak source is the high tank itself: joints and cracks caused by pressure, heat and wind stress.
The hatch and the vent
Leaking water runs downslope into the basement of the building below or onto the adjacent street rapidly.
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 Rai Adhakhir
Apartment district: residential blocks, repeated floors and shared entrances
Tall apartment blocks on a mountain slope mean very high tanks under high pressure and full wind exposure. Lining must have exceptional strength and thickness to resist pressure, wind erosion and intense thermal expansion cycles.
Questions about this district
Does a very high tank leak more than a low one?
Yes. Water pressure is higher and lining endures greater stress, so cracks develop faster.
Do strong hilltop winds affect tank seepage?
Yes. Winds accelerate erosion and may introduce external moisture or speed lining drying.
Does seeping water damage the foundations of buildings below?
Yes. Water flows downhill into the lower building's basement and gradually weakens the foundation.
Does high pressure from tank elevation demand stronger lining?
Yes. Lining must be thicker and stronger to resist high water pressure and rapid thermal expansion.
Does sealing the tank alone solve the problem or must the lower building be repaired?
Sealing stops the source, but the lower building may need inspection and damage from previous seepage to be dried.
Does the slope affect repair and sealing methods?
Yes. Careful inspection of the water flow path underground is needed, and we must ensure no water reaches the basement below.
How much does water tank sealing in Rai Adhakhir 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 Rai Adhakhir.
Nearby districts we cover
Other services in Rai Adhakhir
Other services we provide to residents of Rai Adhakhir.
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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 Rai Adhakhir? Tell us what you saw and we will tell you what it needs
We reach Rai Adhakhir at a time we agree, and you get the full cost before we start.