Water tank sealing in Al Thaghr Jeddah
Al Thaghr is a mixed residential district where villa owners and apartment dwellers live alongside Al Thaghr Hospital and Al Thaghr Model Schools. Tanks here vary greatly in size and age, from old villa tanks built decades ago to large hospital and school reservoirs. Cracks and leaks from aging tanks are common because concrete reservoirs face repeated exposure to heat and moisture.
-
Potable-rated materials
Linings and disinfectants cleared for drinking water tanks, not general-purpose products.
-
You get the downtime first
How many hours the tank is out of service, told before we start rather than after we finish.
-
A first-draw flush
We run the first draw off after refilling, and the tank is not handed back until the water runs clear.
-
Ground and roof tanks
Villas, apartment blocks and premises that need a written record of each visit.
Why the job is different in Al Thaghr
Villas here were built in the 1970s and 1980s, and their concrete tanks now show typical longitudinal cracks from sustained exposure to heat and water. The method is set out in full on our Water tank sealing service.
Old villa tanks with deep cracks
Villas in Al Thaghr date back 40 years or more and their concrete tanks show lengthwise cracks and leaks at foundation joints. Cracks begin from repeated thermal cycling between intense daytime heat and cool nights, and worsen with natural building settlement.
Pipe joints and connections are poorly sealed
Inlet and outlet pipes in old villa tanks were fitted with basic methods, and the joint between pipe and wall leaks under water pressure. Old cement around the pipes has eroded from salt and water.
Hospital and school tanks need regular maintenance
The hospital and schools have large reservoirs serving hundreds of people daily. High water consumption and constant demand place sustained pressure on walls and floor.
The character of Al Thaghr
Mixed district: shops at street level with homes above them
Al Thaghr is a mixed district of older villas and relatively newer apartment buildings beside major institutions. Villa tanks require precision in repair because they are old and joints are complex, while large institutional tanks need scheduling to minimise service downtime.
What we read before any material is opened
A mixed residential quarter north of Old Makkah Road, bounded by Al Jamiah Road to the east, Bakhashab Road to the north and King Khalid Road to the west, with Prince Majid Road passing through its centre. It contains villas and apartment buildings alongside schools and the district hospital.
Cracking in the wall
Initial inspection checks the depth of lengthwise cracks in the walls of aging concrete, especially at corners and the floor.
The floor to wall joint
Floor and base integrity weakens under continuous moisture and salt, and inspection verifies cement crumbling and surface hardness.
The condition of the old lining
Old pipe joints leak water from all directions, and inspection checks every inlet and outlet point.
Sediment and scale
Moisture trapped beneath the surface from prior leaks weakens the concrete subsurface, and inspection taps walls to verify hardness.
The pipe entries
Any old internal lining, if present, may be peeling or cracked, and inspection verifies adhesion before applying a new coat.
The hatch and the vent
Old paint and deposits trap moisture and hide cracks, and full cleaning before sealing exposes the true damage.
How we work
-
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.
-
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.
-
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.
-
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
-
Finding where the water leaves
Carried out drained and dry: cracks, joints, pipe collars and the outer face of the wall.
-
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.
-
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.
-
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.
-
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.
-
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 Jamiah Sub-Municipality
Al Jamiah sub municipality spans the older south of Jeddah. Planned districts such as Al Fayha, Al Thaghr and Madain Al Fahd sit beside crowded popular quarters like the Nazlahs and Al Quraiyat, and beside cleared or clearing land in Ghulail, Petromin and Al Thaalibah awaiting redevelopment. Apartment buildings stand close together above dense runs of shops and restaurants along Old Makkah Road and Prince Majid Road. Drainage in the popular quarters is ageing, humid air drifts in from the port and refinery side to the west, and the flat low lying ground holds rainwater in narrow streets.
Questions about this district
Why does a villa tank in Al Thaghr leak after 30 years of service?
Heat and cold cause repeated expansion and contraction of the concrete, creating fine cracks that widen over time. Salt in the soil accelerates concrete decay.
Is sealing alone enough or must cracks be repaired first?
Cracks must be repaired first. Sealing without crack repair will not stop leaks because water will return through the original fractures.
Does treating one villa tank solve the problem or are neighbourhood tanks connected?
Villa tanks are completely independent of each other. Treating yours solves the problem without affecting neighbours.
How often do I need to re-seal the tank?
Good sealing lasts 10 years or more. But if new cracks appear before then, you may need re-treatment.
Do above-ground tanks need different sealing than underground ones?
Surface tanks face more heat and sun, so need sealing that protects against thermal stress. Underground tanks are less exposed to heat but may need protection from soil moisture.
Is the water already in the tank safe or must it be changed after sealing?
We empty the tank completely before treatment and sterilise it after finishing, before refilling with clean water.
How much does water tank sealing in Al Thaghr 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 Thaghr.
Nearby districts we cover
Other services in Al Thaghr
Other services we provide to residents of Al Thaghr.
-
Water tanks
Water tank cleaning
-
Water tanks
Water tank sterilization
-
Water tanks
Tank leak repair
-
Residential
Cockroach control
Need water tank sealing in Al Thaghr? Tell us what you saw and we will tell you what it needs
We reach Al Thaghr at a time we agree, and you get the full cost before we start.