When it comes to purchasing a property in the UK, understanding the intricacies of different house types is crucial. One such property type that often piques the interest of home buyers and investors is the Cheecol Keeland house. This article delves into the history, construction, typical characteristics, and potential hazards of the Cheecol Keeland house, providing a detailed guide for anyone considering investing in this unique property type.

Historical Context and Manufacturing Background

The Cheecol Keeland house, a distinctive property type, was manufactured by Strongmans 1945 Ltd and designed by Cheecol Processes. These houses were built in the post-World War II era, specifically in 1948, as part of the UK’s efforts to address the housing shortage. Only six of these houses were constructed, making them a rare find in today’s property market.

Manufacturers and Designers

Strongmans 1945 Ltd was a prominent manufacturer in the post-war period, known for their innovative use of prefabricated reinforced concrete (PRC) in house construction. The design of the Cheecol Keeland house was spearheaded by Cheecol Processes, a company that specialized in creating efficient and durable housing solutions using PRC technology.

Period Built and Typical Locations

The Cheecol Keeland houses were built in 1948, a time when the UK was grappling with a severe housing crisis. These houses were typically located in suburban areas, where there was ample space for new housing developments. The use of PRC allowed for rapid construction, which was essential in meeting the urgent demand for housing.

Identification Characteristics

Identifying a Cheecol Keeland house is relatively straightforward due to its unique architectural features. These houses are 2-storey semi-detached properties with a medium pitch hipped roof covered with concrete tiles. The external walls are rendered throughout, giving the house a distinctive appearance.

Key Features

• 2-Storey Semi-Detached Structure: The Cheecol Keeland house is a 2-storey semi-detached property, making it suitable for families looking for spacious living arrangements.
• Medium Pitch Hipped Roof: The roof is medium-pitched and hipped, covered with durable concrete tiles.
• Rendered External Walls: The external walls are rendered, providing a smooth and uniform finish.
• Square Fronted Bay: The front elevation features a 2-storey square fronted bay with a hipped roof.
• Render Drip: A render drip is present at the first-floor level, which helps in directing rainwater away from the walls.
• Flat PRC Canopy: The front door is sheltered by a flat PRC canopy, adding to the house’s aesthetic appeal.

Typical Construction Details

Understanding the construction details of the Cheecol Keeland house is essential for assessing its structural integrity and potential risks. The construction of these houses involves several key components, each contributing to the overall durability and functionality of the property.

Substructure

The substructure of the Cheecol Keeland house consists of lightweight concrete strip footings and a concrete slab. A damp-proof course (DPC) is also included to prevent moisture from rising through the structure.

External Walls

The external walls are constructed using 6″ x 6″ lightweight PRC base units joined with steel cramps grouted into slots. These walls also feature 6″ x 6″ storey height lightweight PRC columns and are rendered for a smooth finish. The cavity wall construction includes 2″ x 1’6″ x 4′ and 2″ x 2′ x 4′ lightweight PRC panels, providing both insulation and structural support.

Separating Wall

The separating wall between the semi-detached units is made of lightweight PRC slab cavity walls, ensuring sound insulation and fire resistance.

Partitions

Internal partitions are constructed using lightweight PC blocks, while the spine wall consists of lightweight PRC slabs.

Ground Floor

The ground floor features magnesite flooring on a 2″ lightweight concrete screed, which is laid on a concrete base. This provides a durable and level surface for the living areas.

First Floor

The first floor is constructed using tongue and groove (T&G) boarding on timber joists, offering a sturdy and stable platform for the upper level.

Roof

The roof structure comprises timber rafters and purlins, covered with concrete tiles. This combination ensures both strength and weather resistance.

Typical Hazards and Risks

While the Cheecol Keeland house boasts several advantages, it is not without its potential hazards and risks. Understanding these issues is crucial for prospective buyers and investors to make informed decisions.

Vertical Cracking

One of the most common issues with Cheecol Keeland houses is vertical cracking at the joints between PRC components. This can be a sign of structural movement or deterioration of the PRC material.

Corrosion of Steel Reinforcement

The steel reinforcement within the PRC components is susceptible to corrosion, especially if the concrete cover is inadequate or if the concrete has become carbonated. This can compromise the structural integrity of the house.

Carbonation of Concrete

Carbonation is a process where carbon dioxide from the air penetrates the concrete and reacts with calcium hydroxide to form calcium carbonate. This can reduce the alkalinity of the concrete, leading to corrosion of the steel reinforcement.

Magnesite Flooring Issues

Magnesite flooring, commonly used in Cheecol Keeland houses, can deteriorate over time, especially if exposed to moisture. This can lead to issues such as cracking, delamination, and even structural damage to the underlying concrete.

Defective Premises Act Considerations

The Cheecol Keeland house is not classified as defective under the Defective Premises Act. However, it is essential to conduct a thorough inspection to identify any potential issues that may require remedial work. The Defective Premises Act imposes a duty on builders, developers, and landlords to ensure that properties are constructed and maintained to a reasonable standard. While the Cheecol Keeland house may not fall under this classification, it is still crucial to address any defects to ensure the safety and habitability of the property.

Inspection Guide for Surveyors

Conducting a thorough inspection of a Cheecol Keeland house requires a detailed understanding of its construction and potential issues. Here is a step-by-step guide for surveyors to follow when inspecting this property type.

External Inspection

1. Roof: Inspect the medium pitch hipped roof for any signs of damage or wear. Check the condition of the concrete tiles and ensure that the roof structure is sound.
2. Walls: Examine the rendered external walls for any signs of cracking, especially vertical cracks at the joints between PRC components. Look for any areas where the render may be deteriorating or coming away from the underlying PRC.
3. Bay Window: Inspect the 2-storey square fronted bay for any signs of structural movement or damage. Ensure that the hipped roof over the bay is in good condition.
4. Render Drip: Check the render drip at the first-floor level to ensure it is effectively directing rainwater away from the walls.
5. Front Door Canopy: Inspect the flat PRC canopy over the front door for any signs of damage or deterioration.

Internal Inspection

1. Ground Floor: Examine the magnesite flooring for any signs of cracking, delamination, or moisture damage. Check the condition of the lightweight concrete screed and the underlying concrete slab.
2. First Floor: Inspect the T&G boarding on timber joists for any signs of wear or damage. Ensure that the floor is level and stable.
3. Partitions: Check the internal partitions made of lightweight PC blocks for any signs of cracking or movement. Inspect the spine wall of lightweight PRC slabs for structural integrity.
4. Ceilings: While the exact construction of the ceilings is not known, inspect them for any signs of sagging, cracking, or water damage.

Structural Components

1. Steel Reinforcement: Check for any signs of corrosion in the steel reinforcement within the PRC components. This may involve using non-destructive testing methods to assess the condition of the steel.
2. Carbonation: Assess the depth of carbonation in the concrete using appropriate testing methods. This will help determine the risk of steel reinforcement corrosion.
3. Damp-Proof Course: Ensure that the damp-proof course (DPC) is intact and functioning correctly to prevent rising damp.

Typical Defects and Remedial Measures

Understanding the typical defects associated with Cheecol Keeland houses and the appropriate remedial measures is essential for maintaining the property’s structural integrity and value.

Vertical Cracking

Defect: Vertical cracking at the joints between PRC components is a common issue.

Remedial Measure: Repair the cracks using appropriate concrete repair techniques, such as epoxy injection or cementitious repair mortars. Ensure that the underlying cause of the cracking, such as structural movement, is addressed.

Corrosion of Steel Reinforcement

Defect: Corrosion of the steel reinforcement within the PRC components can compromise the structural integrity of the house.

Remedial Measure: Remove any damaged concrete to expose the corroded steel. Clean the steel to remove rust and apply a corrosion inhibitor. Repair the concrete using appropriate repair mortars and ensure adequate concrete cover to protect the steel.

Carbonation of Concrete

Defect: Carbonation of the concrete can reduce its alkalinity, leading to corrosion of the steel reinforcement.

Remedial Measure: Assess the depth of carbonation and remove any carbonated concrete. Apply a corrosion inhibitor to the steel reinforcement and repair the concrete using appropriate repair mortars. Consider applying a protective coating to the concrete to prevent further carbonation.

Magnesite Flooring Issues

Defect: Magnesite flooring can deteriorate over time, especially if exposed to moisture.

Remedial Measure: Remove any damaged magnesite flooring and replace it with a more durable flooring material. Ensure that the underlying concrete screed and slab are in good condition and address any moisture issues.

Conclusion

The Cheecol Keeland house is a unique and historically significant property type that offers several advantages for home buyers and investors. However, it is essential to understand the typical construction details, potential hazards, and common defects associated with these houses. By conducting a thorough inspection and addressing any issues promptly, you can ensure the safety and longevity of your investment.

At Flettons, we’re committed to safeguarding your investment. When considering a property purchase, trust our seasoned expertise to reveal any hidden threats. For a thorough building survey, get your instant quote through our quote calculator or reach out directly at 0203 691 0451. Your home’s safety is our top priority.

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