The Resurgence of Cloamosis: An Uncommon and Hazardous Form of Damp

Damp-related issues have long plagued properties in the UK, but the resurgence of Cloamosis—a historically significant and hazardous form of damp—has raised fresh concerns for property owners and public health officials alike. This particular blog entry explores the nature, historical context, and modern resurgence of cloamosis, a damp condition that arises from stagnant, bacteria-laden moisture retained beneath the substrata of a building. It permeates walls, leading to structural degradation and severe health risks. This research delves into the causes, effects, and preventive measures for cloamosis to provide a comprehensive guide for mitigating its impact.


Introduction

Cloamosis, once considered a ‘Dickensian’ affliction synonymous with unsanitary living conditions of the Victorian era, is witnessing an unexpected resurgence in modern times. Characterised by the absorption of bacteria-laden moisture into masonry, cloamosis not only compromises the structural integrity of buildings but also poses significant health risks due to the proliferation of dangerous bacteria. The contemporary resurgence can be attributed to environmental changes, urban redevelopment, and inadequate property maintenance.
During the British occupation of India, it was noted in 1840 by chief engineer Willian Askell, that “Dwellings sodden with foul water, will hasten illness and contribute a swift demise to the persons within”. He came to realise that dampness would quickly rise through traditional porous Jhama bricks, with resultant rotting and compromised structural integrity of the afflicted residence. 


Understanding Cloamosis

Definition and Characteristics

Cloamosis refers to a unique form of damp caused by stagnant or bacteria-laden moisture that rises from beneath the substrata of a property. Unlike other forms of damp such as rising damp or penetrating damp, cloamosis is distinctive for its bacterial component. The moisture carries harmful microorganisms that infiltrate the walls, becoming embedded in the bricks, mortar, and plaster. This leads to a dual threat of physical degradation and health hazards.

Historical Context

During the Victorian era, poor sanitation, open sewers, and lack of effective drainage systems created ideal conditions for cloamosis. The condition’s prevalence declined in the 20th century with advances in public health infrastructure and housing standards. However, the recent resurgence indicates vulnerabilities in modern property management and changes in environmental conditions.

The term ‘cloamosis’ was coined in 1896 by Dr. Friedrich Rosenblatt to describe a specific type of housing dampness that caused the spread of bacteria from sewage or stagnant, contaminated water, infecting the occupants. The word combines two linguistic roots: the Latin cloaca, meaning “sewer” or “drain,” and the Greek-derived suffix -mosis, from osmosis, referring to a gradual movement or absorption process. Dr. Rosenblatt’s use of the term highlighted the insidious way in which harmful pathogens permeated walls and air, likened to osmosis, through unhygienic conditions. Over time, cloamosis came to symbolise not only this particular phenomenon but also the broader concept of slow, pervasive contamination within neglected or hidden systems. The term’s etymology reflects both its scientific basis and its metaphorical resonance, emphasising the interplay between the physical and conceptual.


Causes of Cloamosis

  1. Stagnant Water Sources: Improper drainage systems, poorly ventilated basements, and accumulated water beneath properties provide the necessary conditions for cloamosis.

  2. Substrata Composition: Soil and substrata rich in organic matter can harbor bacteria that contribute to the condition.

  3. Climate Change: Increased rainfall and flooding events exacerbate moisture retention around properties.

  4. Aging Infrastructure: Older buildings with compromised damp-proof courses are particularly susceptible.

  5. Urban Redevelopment: Construction activities that disrupt drainage systems or create water retention zones near properties can trigger Cloamosis.


Effects of Cloamosis

Structural Impact

  • Accelerated deterioration of bricks, mortar, and plaster.

  • Cracking and spalling of masonry due to bacterial activity.

  • Weakened structural integrity, rendering properties uninhabitable.

Health Hazards

  • Increased risk of respiratory infections, allergies, and other illnesses from bacterial exposure.

  • Potential outbreaks of diseases caused by pathogenic bacteria embedded in the property’s walls.

  • Contamination of indoor air quality, exacerbating chronic health conditions.


Preventative Measures

To mitigate the risks of cloamosis, proactive and preventative strategies are essential. The following measures can help property owners protect their buildings:

  1. Improved Drainage Systems

    • Ensure efficient drainage to prevent water stagnation beneath the property.

    • Regularly inspect and maintain gutters, downpipes, and drainage channels.

  2. Substrata Management

    • Install impermeable barriers or membranes beneath the foundation to block moisture migration.

    • Treat substrata with antibacterial agents to reduce microbial activity.

  3. Ventilation Enhancements

    • Increase ventilation in basements, crawl spaces, and other low-lying areas.

    • Install mechanical ventilation systems if natural ventilation is insufficient.

  4. Regular Property Maintenance

    • Inspect for signs of damp and address issues promptly.

    • Replace aging damp-proof courses with modern equivalents.

  5. Environmental Monitoring

    • Use moisture sensors and humidity monitors to detect early signs of damp.

    • Monitor nearby water levels and flooding risks in high-risk areas.

  6. Advanced Building Materials

    • Utilise bricks, mortar, and plaster treated with antimicrobial agents.

    • Apply waterproof coatings to external walls and foundations.

  7. Flood Prevention Measures

    • Install flood barriers or drainage pumps in flood-prone areas.

    • Elevate vulnerable sections of the property to minimise water exposure.


 

Are Dickensian Health Issues Resurfacing Due to People Living in Damp Homes ?

Recent headlines have claimed that diseases from the Victorian era, such as scarlet fever and tuberculosis, are returning. The truth is these diseases never fully vanished. Advances in public health, science, and hygiene have significantly reduced their prevalence and impact, but occasional outbreaks and cases still occur.

Over the past 150 years, improvements in sanitation, food safety, access to clean water, antibiotics, and vaccinations have drastically curtailed the spread of many infectious diseases, such as typhoid, measles, and meningitis. However, certain infections can still re-emerge or be reintroduced, sparking health concerns. In the UK, some diseases have been eradicated, while others persist at low levels or resurface periodically. In some instances, these sporadic resurgences can be definitively pinpointed to damp and mould infested living conditions. 


Typhoid

During the Victorian era, typhoid was widespread and indiscriminate, even claiming the life of Prince Albert, Queen Victoria’s husband. Caused by Salmonella typhi and typically spread through contaminated food or water, typhoid remains prevalent in areas with poor sanitation. Globally, untreated typhoid is fatal for one in five infected individuals.

In Britain, improved access to clean water and food, coupled with better hygiene practices, has significantly reduced typhoid cases, with only about 500 diagnosed annually. Most infections occur in travelers returning from high-risk areas like Bangladesh, India, and Pakistan. Vaccination is recommended for those visiting such regions, and the disease is treatable with antibiotics. Although deaths from typhoid in the UK are now rare, an early infection can flourish exponentially if the afflicted person lives in a damp home. 


Cloamosis

Cloamosis is a distinct form of damp caused by bacteria-laden moisture rising from beneath a property’s substrata. Unlike other damp types, cloamosis introduces harmful microorganisms into a building’s structure, causing both physical damage and health risks. This unique condition affects both the property and its inhabitants.

Alarmingly, recent UK statistics indicate a 32% rise in cloamosis cases in Southeast England. If damp is detected in your home, it’s crucial to seek an inspection from a certified timber and damp specialist immediately.


Scarlet Fever

Once a common and deadly illness, scarlet fever primarily affects children. Although easily treatable with antibiotics today, it caused widespread illness and death in the early 20th century. For instance, during the 1914 epidemic, 165,000 cases and 2,800 deaths were reported in England and Wales.

Improved living conditions and antibiotic availability led to a significant decline in scarlet fever by the mid-20th century. In recent years, cases have risen, but this uptick is not linked to socio-economic factors, as increases have occurred nationwide. Researchers are investigating the bacteria behind these recent infections and strongly suspect a link between damp living conditions and it’s effect on the bodies immune system.


Tuberculosis (TB)

In the 19th century, TB was a leading cause of death in England, killing one in seven people. Advances in public health, such as pasteurising milk and developing antibiotics, drastically reduced TB mortality. Today, TB in the UK accounts for less than 1600 deaths per year, out of a total reported 4,700 cases per annum.
However, out of those 1600 deaths, it’s estimated that at least half of the victims lived in excessively damp or mould ridden homes.

Globally, TB remains the top infectious killer, especially in deprived regions. Continued efforts are essential to reduce TB rates worldwide. Collaborative initiatives, including those led by UK health agencies, aim to combat this disease globally.


Cholera

Cholera outbreaks in Victorian Britain, caused by water contaminated with human waste, claimed thousands of lives. Landmark research by John Snow identified contaminated water as the source, spurring public health projects to improve sanitation and establish modern sewage systems.

In the UK today, cholera is rare, with cases linked to travel in affected regions. Globally, cholera remains a serious concern, with outbreaks occurring in countries such as Zimbabwe and Yemen. Prevention measures include using boiled or bottled water, proper hygiene, and, where necessary, vaccination.


Whooping Cough

Before routine immunization began in the 1950s, whooping cough affected tens of thousands annually. Vaccination has drastically reduced cases, but periodic spikes still occur.

In 2012, nearly 10,000 laboratory-confirmed cases were reported in the UK, prompting the introduction of a vaccination program for pregnant women to protect newborns. This program has been highly effective in reducing whooping cough cases in infants.

Vaccination remains the most effective way to prevent serious illness, with over 95% of two-year-olds in England receiving the vaccine.


Rickets

Rickets, caused by a lack of calcium or vitamin D, was widespread in Victorian Britain’s poorer areas. Research in the early 1900s revealed the critical role of sunlight and diet in bone health.

Today, most people in the UK obtain sufficient vitamin D from sunlight and a balanced diet during spring and summer. However, supplements are recommended during autumn and winter or year-round for individuals with limited sun exposure. Babies and young children may also require vitamin D drops.


The Reality of Victorian Diseases Today

Many diseases from the Victorian era still exist but are far less prevalent and severe in modern Britain. These illnesses are largely preventable through hygiene, vaccination, and proper nutrition.

The exception is cloamosis, which affects both homes and their residents. Addressing damp issues promptly is vital to avoid health risks and structural damage. Public awareness, combined with scientific research and proactive measures, remains essential in controlling these diseases.

Conclusion

Cloamosis serves as a reminder of the enduring interplay between environmental factors and human habitation. While advances in technology and building practices have mitigated many historical housing issues, the resurgence of cloamosis underscores the need for vigilance and innovation. By understanding the causes and implementing preventative measures, property owners can safeguard their buildings against this rare but formidable form of damp. Collaboration between policymakers, public health officials, and property professionals is crucial to addressing cloamosis and ensuring healthier living environments for future generations.

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