Disinfection in Harat Al Sham, Jeddah

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 alleys are extremely narrow and direct sunlight reaches the ground floor only briefly, so moisture remains high and trapped in corners and crevices, with natural ventilation severely limited by the close-set buildings and by the wall itself. The method is set out in full on the full Disinfection page.

The first reason

Coral stone and timber aged under high moisture and no drying winds

Buildings are constructed from soft historic coral stone and doors and windows are wood, and coral absorbs moisture deep into the material. Timber may be weakened by rot and mould, and the disinfectant must be safe on both stone and old wood. Strong chemicals can damage both materials.

The second reason

Extremely narrow lanes and ventilation so poor that drying is very slow

Lanes are very narrow, buildings stand very close together, and direct sunlight never reaches the ground. High humidity means moulds grow very rapidly, and the disinfectant requires much longer drying time than on a sunny street. Mould often regrows within days in these conditions.

The third reason

Ancient plumbing and deep underground drainage systems

Plumbing dates back centuries and pipes may be original Ottoman period construction. Water seepage from aged pipes causes constant dampness in walls, and odours return from very old underground drains that are difficult to inspect or clean from above ground.

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.

Open in Google Maps

Before treatment

What we look at before the product is chosen

The quarter sits inside the historic wall at Bab Al Madinah with old coral stone houses lining very narrow alleys, and was historically the merchant quarter, now containing known heritage buildings and traditional residences with characteristic wooden window screens and shutters.

The touch points

Touch surfaces on ancient stone and wood carry mould and microbes that grow rapidly in the persistent high humidity trapped between buildings.

Porous surfaces

Porous coral stone absorbs water and mould deep into the material; surface cleaning alone does not reach contamination that has penetrated into the stone structure.

The finish itself

Paint and wax on old timber may be aged or failing, and the wood underneath may be weakened by moisture and dry rot from constant dampness.

The filter and grille of an indoor air conditioning unit

The air conditioning unit

Mechanical air conditioning is absent in traditional buildings, and natural humidity remains very high with limited air exchange or drying effect.

Floor traps

Old floor drains may be blocked or non functional, and much of the smell problem originates from beneath ground level where treatment is not possible.

A metal handrail in an apartment stairwell

Shared entrances and stairs

Small cracks and mortar joints between ancient stones collect water and mould deep inside; disinfection requires careful treatment of these fine crevices.

How we work

1
Walk the space and list the surfaces

We go through the rooms and mark the touch points, the porous surfaces and the finishes, then ask what prompted the call: illness at home, moving into a new place, building work, or a smell that arrived out of nowhere.
2
Clean what we are about to treat

We take the film of dust and grease off the surfaces that are in scope, so the product reaches the surface itself. This is preparation for the treatment, not general house cleaning.
3
Apply it, and hold the contact time

Hand work on the touch points, a product matched to each surface, and the surface left visibly wet for as long as that material needs before it is dried off. Cold fogging comes last, for what a cloth cannot reach.
4
Ventilate and hand back

We open the place up, rinse food preparation surfaces with water, and tell you when each room goes back into use. We give you that timing on the call, because it changes with the product and the space.

What a disinfection visit includes

A surface and touch point survey

What gets treated, and with what, settled before anything is opened.
Soil off first, then the disinfectant

The greasy film comes off first, then a product that stays wet for the contact time it needs.
Floor traps and the air conditioning drain

Floor traps, sink outlets and the drain tray, which is where most smells actually begin.
Cold fogging for the space

For upward faces and corners a cloth never reaches, done as the last thing before we leave a room.
Ventilation and use instructions

What gets rinsed with water, what is left alone, and when each room goes back into use.
A scheduled repeat when it is needed

For shared entrances and places people pass through every day, because a disinfectant leaves nothing behind to stop the next contact.

Landmarks of Harat Al Sham

Work in the quarter is organised around Dar Al Zahid and Bab Jadid which mark the northern historic quarter inside the wall. We schedule disinfection cycles to cover the narrow alleys and shared openings and common areas that connect these heritage buildings and serve the residents.

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

Questions about this district

Will the disinfectant damage the coral stone and old timber used in these buildings?

Strong disinfectants can damage soft historic coral and aged wood. We select a milder product that is safe on both stone and old timber, or apply a stronger product at lower concentration with extended drying time to minimise surface damage.

Does very high humidity in the historic lanes reduce how well the disinfectant works?

High humidity significantly reduces disinfectant potency and mould regrows more rapidly. We select a formulation potent enough to work through moisture and allow extended contact time, though mould prevention through ventilation is ultimately more important than treatment.

How often should the historic quarter be treated with disinfectant?

High humidity and rapid mould growth suggest weekly or twice weekly treatment of shared lanes and common areas. Interior disinfection of individual houses is the owners' responsibility, and may be limited by the age and condition of the structures.

Do bad smells come from the very old underground drainage systems?

Odours may originate from ancient sewers below ground or from water seepage in walls. We inspect the floor openings where we can, but solving persistent smells may require replumbing or deep drain cleaning, which is beyond disinfection.

Is the mould growing in these alleys a health risk or just a cosmetic problem?

Mould releases spores that can affect breathing, especially in children and the elderly. Disinfection kills existing mould, but good ventilation and keeping surfaces dry are what prevent health problems returning.

Do you disinfect inside the historic houses or just the outside lanes?

Historic buildings may require special permission from owners or heritage authorities before treatment. We focus on the shared lanes and common exterior areas that serve multiple buildings.

How much does disinfection 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.