Water tank sealing in Harat Al Bab Wa Al Shamiyah Makkah
Harat Al Bab Wa Al Shamiyah is a new development zone under the Rua Al Haram scheme, containing water tanks in residential towers and hotel blocks. The tanks here are new but face high pressure from pilgrim and worker traffic, and Jeddah's hard water leaves salt and calcium deposits on the internal linings. Cracks and leaks appear quickly in new buildings because tanks were not sealed properly during construction.
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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 Harat Al Bab Wa Al Shamiyah
Buildings in the zone are newly built but tanks serve high numbers of temporary guests and residents, placing sustained pressure on linings and joints. The method is set out in full on our Water tank sealing service.
Large tanks in hotel towers
New residential and hotel towers contain large roof tanks serving dozens of units and rooms. Continuous flow and high pressure cause rapid wear on linings and pipe seals.
Hard water and salt deposits
Jeddah's water is very hard and rich in salt and calcium. New linings fail quickly under these deposits, and cracks appear at the joint between tank floor and walls.
High maintenance demand in the pilgrim and worker zone
The area serves pilgrims and workers with very high water demand. Tanks run under heavy load year-round, especially during Hajj and Umrah seasons.
The character of Harat Al Bab Wa Al Shamiyah
New development: ongoing construction and vacant plots between the homes
A new development zone means buildings and tanks are recent but built under time pressure. Tanks were often not sealed properly during construction, and weak linings fail quickly under high pressure and sustained flow from pilgrims and workers.
What we read before any material is opened
A modern development zone stretching north of the Grand Mosque under the Rua Al Haram scheme, marked by the Khalid ibn Al Walid Mosque to the west and the cleared old Al Shamiyah quarter to the north. It contains residential buildings, hotel towers and large shared water tanks.
Cracking in the wall
Fine cracks in the tank floor appear quickly in new tanks serving hotel buildings, because continuous flow creates high pressure.
The floor to wall joint
Pipe entry and exit joints are weak in modern construction, and water seeps around brass pipes at the penetrations.
The condition of the old lining
The floor-to-wall joint on the tank sides cracks from hydrostatic pressure and thermal expansion.
Sediment and scale
High humidity, salt and calcium deposits accumulate on every surface, and weak linings cannot resist them.
The pipe entries
Tanks on tower roofs face extreme thermal expansion from direct sun and daily heating cycles.
The hatch and the vent
Slow water seepage from small cracks may not be noticed at first, but causes damp in ceilings and building sections below the tank.
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 Al Ghazza Sub-Municipality
Al Ghazza sub municipality wraps around the north and west of the Grand Mosque, from Al Shamiyah, Al Qararah and Shaib Amir round to Jarwal and Al Taysir. Large tracts were cleared for the northern expansion and the Rua Al Haram scheme, leaving excavated ground and open construction sites beside ageing blocks that now serve as dense seasonal lodgings in Jarwal and Al Taysir. Old flood paths still fall from Jabal Qaiqaan and Jabal Khandamah towards the mosque, and markets and eateries crowd Al Masjid Al Haram Road and Umm Al Qura Road.
Questions about this district
Do new tanks in modern towers need sealing?
Yes. Hard water and salt begin to affect the lining from the first year.
Why do tank floor-to-wall joints crack so quickly?
These joints are weak in new construction. High water pressure and thermal expansion create stress in the seals.
Do shared tanks need more intensive sealing than individual tanks?
Yes. Shared tanks serve larger populations and flow rates are much higher, so linings wear faster.
Does new sealing protect against salt and calcium buildup?
Sealing reduces water leakage and protects the concrete beneath. But deposits still accumulate on the surface of the new lining itself.
How long does tank repair take in an occupied residential building?
If the building has occupied units, we must plan ahead. Draining and refilling may take a full day depending on tank size.
Does the high humidity north of the Grand Mosque affect tank linings?
Yes. High humidity and heat cause expansion and contraction. Joints experience additional pressure from this cycling.
How much does water tank sealing in Harat Al Bab Wa Al Shamiyah 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 Harat Al Bab Wa Al Shamiyah.
Nearby districts we cover
Other services in Harat Al Bab Wa Al Shamiyah
Other services we provide to residents of Harat Al Bab Wa Al Shamiyah.
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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 Harat Al Bab Wa Al Shamiyah? Tell us what you saw and we will tell you what it needs
We reach Harat Al Bab Wa Al Shamiyah at a time we agree, and you get the full cost before we start.