Water tank waterproofing in Al Mawj, Jeddah

Al Mawj is the southernmost subdivision at far south Jeddah, very close to the coast. Its name means the wave, containing a small older locality alongside new subdivided plots. New tanks here face relentless sea salt and high persistent humidity from the marine environment.

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Interior surfaces fully sealed
Food-safe coating materials
Cracks and gaps filled first
Inspected before handover

Why tank waterproofing protects your water supply

A coastal subdivision at far south Jeddah containing a small older locality known as Junayb Sharah alongside newly subdivided plots, close to where the regional Al Lith highway continues toward the coast.

Seal before a leak develops

Sea salt and high humidity penetrate new tank walls from outside, and waterproofing stops this seepage and protects concrete from deterioration and internal leaking.
Repair an existing slow drip

Cleaning existing salt and moisture is essential before waterproofing because salt deposits can reduce how well sealing material adheres to new tank concrete.
Keep drinking water free of debris

Thermal expansion from summer sun may be limited by high persistent moisture, but ground movement in the emerging subdivision requires flexible waterproofing.
Reduce maintenance over time

Resealing may be necessary every six to eight years in Al Mawj because continuous sea salt, persistent humidity and ongoing construction stress the protective coating.

Everything included in the service

Tank drained of water
Walls scrubbed with brush
Surfaces dried before coating
Cracks and gaps sealed
Primer coat brushed on
Waterproofing coat brushed on
Second coat applied over first
Coating inspected before leaving

How the waterproofing job is carried out

Booking and access arrangement
Draining, cleaning, and drying
Sealing and coating
Inspection and handover

What changes about water tank waterproofing in Al Mawj

Rooftop tanks on new homes are exposed to salt laden winds and sea salt that deposits on new concrete surfaces. For the whole method, see our water tank waterproofing service.

The first reason
Sea salt and humidity weaken new concrete rapidly

Al Mawj lies very close to the coast, and sea salt and high humidity penetrate new concrete quickly. This weakens the tank externally and creates cracks allowing salt and moisture to seep inside the tank.
The second reason
Ongoing construction in a coastal location multiplies problems

Building continuing whilst exposed to sea salt means construction dust mixed with salt. This combination enters new tanks and contaminates the first water drawn from supplies.
The third reason
New tanks need immediate protection in coastal conditions

New home tanks fill early in the building process, and first water may carry salt and construction dust. Early waterproofing protects against this contamination before you use the water.

Al Mawj on the map

Al Mawj sits about 3 km from Al Rimal and about 7.5 km from Al Marsa.

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What the tank looks like after

A sealed, smooth interior surface

The coating bonds to the concrete or fibreglass and fills any hairline cracks that were present.

No active leaks or seeping

Gaps that were allowing water to seep through the walls or base are filled and covered.

Food-safe lining throughout

Every applied material is rated safe for contact with drinking water.

What our customers said

«شغلهم ما شاء الله، أنصح الجميع بالتعامل معهم. عن تجربة وثقة.»

Hesham ZayanAugust 2026 · Review on Google Maps

«أفضل شركة تنظيف بالبخار. أسعارهم ممتازة وشغلهم مرة كويس.»

Bashar Al-MushaikhiJuly 2026 · Review on Google Maps

«خدمة ممتازة.»

Abdullah Al-GhamdiAugust 2026 · Review on Google Maps

«ممتازين.»

Muhammad EshraJuly 2026 · Review on Google Maps

Read the reviews on Google

Some of our work

Illustrative photographs. Our own job photographs go here as soon as the client approves them.

The character of Al Mawj

New development: ongoing construction and vacant plots between the homes

In a new subdivision beside the sea, the new rooftop tank faces dual environmental pressure: construction dust from the emerging neighbourhood and sea salt from the coastal location. Early waterproofing protects against this combined stress on young concrete.

Nearby districts we cover

Al Rimal Al Marsa Al Rabiyah

Questions worth asking first

Does sea salt damage new concrete in tanks located at Al Mawj?

Yes, sea salt and high humidity penetrate new concrete quickly and weaken it externally. This increases cracking and seepage into the tank.

When is the best time to waterproof a tank at a coastal location so close to sea?

Before moving in, even before the tank's first water fill. In a coastal location, salt enters the tank faster than in inland areas.

Do tanks in Al Mawj need different waterproofing than tanks far inland from the sea?

The waterproofing method is the same, but the need is more urgent and immediate in a coastal location. Salt and humidity increase external pressure on the tank.

Can waterproofing work on a tank if sea salt has already entered it?

Yes, waterproofing stops new salt entering. However, existing salt must be cleaned first with repeated fresh water washing until the salty taste disappears.

Does high humidity from the sea damage newly applied waterproofing materials?

Modern waterproofing resists salt and high moisture. However, ensuring complete tank dryness before waterproofing is very important in a damp coastal environment.

What should we arrange before the waterproofing team arrives at a coastal far south site?

Fully drain the tank and wash away sea salt with repeated fresh water rinses until salt taste disappears. Ventilation for several hours is very important because coastal humidity is extremely high.

How much does water tank waterproofing in Al Mawj cost?

It is set after we see the job, because the price follows the kind of work, the size of the space, its condition and the time and materials it needs. Send a photo and a short description on WhatsApp and we will give you an estimate before we reach Al Mawj.