A pest control technician checking the base of a concrete wall with a torch

Termite control in Harat Al Sawalhah Jeddah

Harat Al Sawalhah is a traditional quarter in Thuwal, some way inland from Jeddah harbour. Narrow streets, old ceilings and tightly packed buildings; shops with homes above them; sea air so laden with salt and moisture that it penetrates every wall. The buildings are a century old, built on damp soil with no modern damp proof course, and though the streets have been resurfaced with modern asphalt, the footings beneath are original and saturated.

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Targeted, not broadcast

Product goes into cracks and runways, never sprayed across open surfaces.
Told before we start

What we will use, where it goes, and what to cover or move before we arrive.
A follow-up visit

We return after the first treatment, because what survives it does not show on the day.
Homes and businesses

Apartments and villas, and kitchens and stores that need a record of each visit.

Why they keep coming back in Harat Al Sawalhah

The footings are very old and shallow by modern standards, built before damp-proofing was standard. Moisture works through walls from both outside and inside simultaneously; the brick has no skin and the concrete is porous. The method is set out in full on Termite control in detail.

The first reason

Shallow old foundations with no damp proof course

Sawalhah buildings rest on footings that are very shallow by modern codes and entirely unprotected against moisture. Concrete is porous and old stone has lost its binding. Termites travel from the coastal damp soil directly into the footing without a single barrier to slow them.

The second reason

Sea air, salt saturation and perpetual damp

Thuwal is open to the harbour, and the air is salt-laden and saturated with moisture. Walls absorb this dampness rapidly and evaporation is slow in the tightly packed buildings. Perpetual dampness creates ideal conditions for termite activity and fungal growth simultaneously.

The third reason

Shops below flats and damp shared concrete

The concrete floor separating a ground shop from the flats above is permanently damp. The shop faces salt air and street water; the flats above retain dampness from use. Termites work freely in this boundary, and if the shop is treated but the flats above are not, the insects move from the damp floor slab into the untreated flats above.

The character of Harat Al Sawalhah

Mixed district: shops at street level with homes above them

In a mixed coastal quarter like Harat Al Sawalhah, shops and flats are joined and moisture runs freely between them. Treating the shop alone may save stock from ruin but does not protect the flats, and without treating the flats together, termites return from the damp boundary between them.

Before treatment

The evidence that decides the treatment

Thuwal is coastal and close to the harbour. Salt-laden sea winds feed perpetual moisture into all walls. Old buildings have no modern damp barriers and were not designed to resist modern humidity loads.

Mud tubes

Mud tubes in Al Sawalhah may not be visible on old porous walls because perpetual dampness makes walls wet and the tubes blend into the general moisture rather than standing out as distinct structures.

Discarded transparent wings on a window ledge

Shed wings

Shed wings appear strongly in warm months but may be fewer than in drier areas because perpetual dampness causes slow continuous activity rather than seasonal pulses.

A damaged timber frame showing internal galleries

Hollow timber

Hollow timber is common in old ceilings, beams and doors that have absorbed sea moisture from the air and damp walls throughout their lives.

A dark damp patch below a pipe at a wall base

The water source

The water source is multiple: sea-salt-laden air saturating all walls, seepage from coastal damp soil, and condensation on old cold walls from temperature swings.

Cardboard boxes and timber stacked on a store floor

Cellulose on the floor

Cellulose on the floor includes old wooden floors, stairs, beams, shutters and furniture stored in damp corners and shop storage areas.

A concrete joint and a pipe passing through a floor slab

Joints and pipe entries

Joints and pipe entries between shop and flat are large and unsealed; the concrete floor slab separating them is porous and remains damp.

How we work

1
Inspect and trace

We sound the timber and the skirting, take moisture readings, and follow the tubes to the point where they leave the soil. We also settle the species, because one that lives inside dry wood is not treated like one that lives in the ground.
2
Treat the soil around the building

A narrow trench at the footing and injection at regular spacing, so the treated band runs continuous with no gap to walk around.
3
Drill the joints, inject the timber

Small holes at spacing along the slab joints, the wall bases and the pipe entries, direct injection into the galleries inside the affected timber, then the holes are closed and made good.
4
Bait stations and monitoring

Stations in the soil carrying a slow-acting material the workers pass through the colony by mouth-to-mouth feeding, and we come back to read them, because an empty tube on a wall proves nothing on its own.

What termite control includes

A traced, recorded inspection

Sounding, moisture readings, tubes traced back to the soil, and the species settled before anything is applied.
A treated band at the perimeter

Trenching and injection at the footing, spaced so the band is continuous rather than a set of patches.
Joints and service penetrations

Slab joints, pipe entries and floor drains, which are the ways up through the concrete.
Bait stations in the soil

A slow material carried back through the colony by feeding exchange, rather than stopping the workers at the wall.
Aftercare instructions

What not to dig or water near the treated band, what to keep off the walls, and the ventilation time we set for your case.
Scheduled monitoring visits

Reading the stations, sounding the same timber again, and treating any new activity.

Landmarks of Harat Al Sawalhah

Work in Harat Al Sawalhah is organised through its role in the larger Thuwal picture: the Jeddah-Madinah Road defines the main entry point and where moisture and salt air converge, while Thuwal Corniche marks the direction of sea winds and the perpetual dampness that dominates the quarter.

Jeddah Madinah Road
Thuwal Corniche
Thuwal Harbour
Thuwal Cultural Centre

Questions about this district

Do shallow old foundations without a damp course stop termites or help them?

They help them entirely. Old footings have no modern damp barrier. Concrete is porous and stone has lost its binder. Termites rise from damp soil directly into the footing without resistance.

Is treating the shop alone enough if the flats above are left untreated?

No. Shop treatment alone is insufficient. The floor separating shop from flats is permanently damp and likely already infested. Shop and flats and the boundary between them must be treated together.

Does sea salt in the air weaken the effectiveness of the chemicals used?

It may if the chemistry is weak. Good chemicals used in Thuwal work effectively despite the salt, but may need retreating sooner because perpetual dampness degrades their efficacy faster than in dry areas.

Does perpetual dampness reopen the route for termites after earlier treatment?

Yes. Perpetual moisture reduces treatment effectiveness over time. Monitoring must continue longer in coastal districts, and retreatment may be needed sooner than in drier areas.

Could drilling old foundations damage the building beyond repair?

It could weaken very old footings further. However, surface treatment alone is insufficient here. Treatment design must be carefully planned with a specialist before any drilling is carried out.

Is treating walls from inside only, without the outside soil, sufficient here?

No. Inside treatment alone is insufficient in coastal quarters. Moisture comes from outside and the damp coastal soil is the primary source. Both inside and outside must be treated.

How much does termite control in Harat Al Sawalhah 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 Sawalhah.