A technician checking a building perimeter and setting a monitoring point at the wall base

Preventive treatment in Harat Al Sham Jeddah

Harat Al Sham is the northern part of historic Jeddah inside the old wall by Bab Al Madinah, containing old coral stone houses like Dar Al Zahid connected by extremely narrow alleys. These tall historic stone buildings with wooden rawashin are enclosed by lanes so tight that fresh air cannot circulate. The preventive programme focuses on minute gaps around doors and windows, wooden screens and tiny voids beneath the historic foundations.

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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 Sham

The lanes are so narrow and buildings so closely spaced that fresh air cannot flow. Moisture is trapped at dangerous levels and sunlight never reaches the streets. These conditions create ideal shelter for insects, which nest in tiny gaps in stone and wood that are difficult to find. The method is set out in full on how we approach Preventive treatment.

The first reason

Minute gaps in coral stone, wood and rawashin screens

Old coral stone buildings in Harat Al Sham contain countless tiny gaps in stone, wooden fittings and the rawashin screens. These minute voids are perfect shelters for small insects. The programme focuses on detecting these gaps and sealing them with materials compatible with old stone and wood without damaging heritage structures.

The second reason

Extremely tight lanes and trapped moisture

Lanes in Harat Al Sham are so narrow that they exclude fresh air completely. This creates dangerously high humidity and permanent shadow. These conditions are ideal for insects. Focus is placed on monitoring points positioned deep in narrow lanes to detect insects before they reach buildings.

The third reason

Ancient foundations and voids beneath buildings

Coral stone buildings rest on foundations that are very old and contain voids and water leakage. Insects use these voids to enter buildings from below. Foundations are inspected and monitoring points are positioned at every significant void beneath buildings to intercept insects entering from ground level.

Harat Al Sham on the map

Harat Al Sham sits about 0.5 km from Harat Al Mazloum and about 0.5 km from Harat Al Bahr.

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Before treatment

What a preventive visit reads

The northern quarter inside the old wall of historic Jeddah at Bab Al Madinah, containing old coral stone buildings and extremely narrow lanes. Historically the quarters of major merchants, it contains Banaja House, Dar Al Sarti and Ribat Al Khunji Al Kabeer, with Bab Jadid and the Qishla barracks at its northern edge.

The base of an exterior wall where the building meets the ground

The base of the outside wall

The base of the outside walls in Harat Al Sham is very old coral stone with voids and cracks. This base is inspected carefully and residents are advised on sealing large voids with materials compatible with old stone.

An exterior door threshold and the gap beneath it

Gaps and openings

Gaps between buildings, around wooden doors and frames and within rawashin screens contain fine cracks. These gaps are checked and monitoring points are positioned around screens and doors.

An outdoor air conditioning unit with a condensate pipe on the wall

Air conditioning condensate

Water drains from rooftops into the tight lanes beneath buildings. Drain outlets are inspected and monitoring points are placed where water collects in narrow lanes.

Floor drains

Pavements in the lanes are very old coral stone with voids and crevices. These gaps are surveyed and monitoring points are positioned at every water pooling area.

A drip irrigation line in damp soil beside planting

Irrigation against the wall

Irrigation in the lanes creates damp patches on coral stone walls. Walls are checked for algae and debris growth.

A closed monitoring station at the foot of a wall

The monitoring points

Monitoring points are positioned at every building entry, around wooden screens and at significant voids. They are read on every visit to detect insect activity.

How we work

1
The baseline survey

We walk the outside boundary and then the inside: gaps under doors, pipe runs, vents, condensate lines, drains, the bin area and the store, and we fix the monitoring points before anything is applied.
2
Close the routes

Mesh on the vents, the gap under the door dealt with, the sleeve around a pipe run closed, and water put back into the drain nobody uses. Exclusion saves a spray that would otherwise repeat forever.
3
The band and the placed product

A residual band at the base of the wall outside and around door and window openings, with placed product inside joints and closed voids where it is warranted, and no open spray across living surfaces.
4
The scheduled visit: read, renew, record

We read the points to see which side is under pressure, renew the band where sun or irrigation has taken it, aim the visit at what the coming season opens up, and write down what was found and what was used.

What the preventive programme includes

A survey, then a check every visit

Entry points, moisture sources and storage, recorded before anything is applied and revisited each time.
Monitoring points that get read

At the wall and floor junction, under sinks and in the store, checked on every visit rather than only the last one.
A renewed exterior band

At the wall base and around the openings, put back wherever sun or irrigation took it between visits.
Drains, water lines and waste

The water seal in the drains, the condensate line and the ground around the bins, which are the standing water and food sources.
Between the visits

What to keep dry, what to keep closed, and what is worth a call before the next date. Ventilation we tell you before the visit.
A scheduled visit and a record of each

An agreed date, what the points held, what was treated, and what changed since last time.

Landmarks of Harat Al Sham

In Harat Al Sham, work is positioned around historic landmarks such as Dar Al Zahid, Banaja House, Bab Jadid and the Qishla. The programme moves methodically between these heritage buildings and their entries, inspecting the tight lanes between them along a regular route that protects the buildings.

Bab Jadid
Dar Al Zahid
Banaja House
Ribat Al Khunji Al Kabeer
The Qishla

Questions about this district

How does the preventive programme differ in a heritage historic quarter?

Historic buildings may be damaged by harsh chemicals. The programme uses materials safe on old stone, wood and historic paint. Focus is placed on minute gaps and gentle methods rather than heavy chemical application.

Can minute gaps in old coral stone safely be sealed?

Yes, materials compatible with old stone and wood are used. Gaps are filled carefully to avoid damaging buildings. Focus is placed on larger gaps that allow insect entry rather than attempting to seal every microscopic void.

What about wooden rawashin screens and the gaps within them?

Old wooden rawashin contain fine gaps that shelter insects. Screens are inspected and monitoring points are positioned around them. Residents are advised carefully on sealing significant gaps without damaging the heritage screens.

Do the extremely tight lanes need special treatment?

Very tight lanes are ideal for insects because of trapped moisture and permanent shadow. Focus is placed on monitoring points positioned in lanes and inspection beneath buildings where water collects.

Do residential and commercial buildings need different protection?

Residential buildings need internal protection, and old commercial buildings may be cafes or stores. The programme protects entries and external gaps the same way for each building type.

How often do preventive visits come to Harat Al Sham?

Visits are scheduled according to monitoring point readings and season. Summer visits may shorten because trapped moisture in tight lanes attracts insects actively. Winter visits may lengthen slightly as activity drops.

How much does preventive treatment in Harat Al Sham 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 Sham.