When considering a property purchase in the UK, understanding the intricacies of different housing types is crucial. One such property type that often piques the interest of home buyers and investors is the British Housing house, particularly those manufactured by John Lynn & Co. Ltd. between 1965 and 1967. Known for their unique construction and design, these properties offer both opportunities and challenges. This article delves into the essential aspects of British Housing houses, providing a detailed guide for prospective buyers and investors.

Historical Context and Manufacturers

The British Housing house, also known as the Doxford or Lynn, was a product of the mid-1960s, a period marked by rapid urban development and a pressing need for affordable housing. John Lynn & Co. Ltd., in collaboration with designer F. Hedley, spearheaded the construction of these properties. Between 1965 and 1967, approximately 100 units were built, primarily consisting of bungalows and two-storey detached, semi-detached, and terraced houses.

These houses were designed to address the housing shortage of the time, offering a quick and cost-effective solution. The use of innovative materials and construction techniques set them apart from traditional brick-and-mortar homes, making them a subject of interest for modern-day buyers and investors.

Identification Characteristics

Identifying a British Housing house involves looking for specific architectural and material features. These properties typically have a shallow pitch gable roof covered with coloured polyester glass laminate. The front and rear external walls may be clad in slate, stone, polyester glass laminate, tile hanging, or timber shiplap boarding. The gable walls are rendered and coated with synthetic resin-based aggregate.

The unique combination of materials and design elements makes these houses easily recognizable. However, it’s essential to be aware of the potential hazards and risks associated with these properties, which we will discuss in detail.

Typical Hazards and Risks

While British Housing houses offer unique architectural appeal, they also come with certain risks and hazards that prospective buyers should be aware of. These include:

• Corrosion: Minor corrosion of boxed RSA and RSC stanchions and cleats, particularly at the bases, is common. This can compromise the structural integrity of the property over time.
• Render Failure: The render on the gable walls can fail, leading to deterioration of the resin coat and potential water ingress.
• Asbestos: Asbestolux ceiling panels and possible sprayed limpet asbestos within timber stud panels pose significant health risks if disturbed.
• Water Staining: Roof timbers at the eaves may show signs of water staining, indicating potential leaks or inadequate waterproofing.
• Cracking: Vertical cracking internally and externally at panel junctions can occur, affecting both the aesthetic and structural aspects of the property.

Understanding these risks is crucial for making an informed decision when purchasing a British Housing house. It’s also essential to know whether these properties are classified as defective under the Defective Premises Act.

Defective Premises Act Classification

The Defective Premises Act 1972 aims to ensure that properties are built to a reasonable standard and are safe for occupation. British Housing houses, given their unique construction and materials, may fall under scrutiny for potential defects. However, not all properties of this type are automatically classified as defective.

A thorough inspection by a qualified surveyor is necessary to determine the condition of the property and identify any defects that may render it unsafe or uninhabitable. This inspection should cover all aspects of the construction, from the substructure to the roof, to ensure that the property meets the required standards.

Inspecting a British Housing House

When inspecting a British Housing house, it’s essential to follow a systematic approach to identify any potential issues. Here are some key areas to focus on:

Substructure

The substructure of these houses typically consists of concrete pads below stanchions and a concrete slab with a damp-proof course (DPC). Inspect for any signs of cracking or movement in the concrete, as well as the condition of the DPC, which is crucial for preventing moisture ingress.

Frame

The main frame comprises four double RSA corner stanchions, four double RSC stanchions, and one single-storey double RSC stanchion, each forming a hollow box. Additionally, there are two RSC perimeter beams and a pair of RSC floor support beams. Check for any signs of corrosion, particularly at the bases of the stanchions and cleats.

External Walls

The external walls are made of eaves-height timber frame panels with front and rear panels clad in polyester glass laminates and slate panels. The gable wall panels are clad with woodwool slabs, mesh reinforcement, and render coated with synthetic resin-based aggregate. Inspect for any signs of render failure, corrosion of wire mesh reinforcement, and deterioration of the resin coat.

Separating Wall

The separating wall consists of an eaves-height timber frame panel cavity wall backed with woodwool slabs and lined with foil-backed plasterboard. Mineral wool insulation is placed between the frame studs. Check for any signs of moisture ingress, insulation degradation, or structural movement.

Partitions

Internal partitions are typically made of honeycomb plasterboard. Inspect for any signs of cracking, moisture damage, or structural movement.

Floors

The ground floor is usually concrete, while the first floor consists of chipboard on timber joists. Check for any signs of moisture damage, warping, or structural movement in the floors.

Ceilings

Ceilings are made of Asbestolux panels, which may contain asbestos. It’s crucial to inspect for any signs of damage or deterioration and to handle any asbestos-containing materials with care.

Roof

The roof is constructed with timber trusses and insulated polyester glass laminate. Inspect for any signs of water staining, leaks, or structural movement in the roof timbers.

Typical Defects Common in British Housing Houses

Understanding the typical defects common in British Housing houses can help you make an informed decision when purchasing one of these properties. Here are some of the most common issues:

Corrosion

As mentioned earlier, minor corrosion of boxed RSA and RSC stanchions and cleats, particularly at the bases, is a common issue. This can compromise the structural integrity of the property over time and may require remedial work to address.

Render Failure

The render on the gable walls can fail, leading to deterioration of the resin coat and potential water ingress. This can cause further damage to the underlying structure and may require extensive repairs.

Asbestos

Asbestolux ceiling panels and possible sprayed limpet asbestos within timber stud panels pose significant health risks if disturbed. It’s essential to handle any asbestos-containing materials with care and to seek professional advice if you suspect the presence of asbestos.

Water Staining

Roof timbers at the eaves may show signs of water staining, indicating potential leaks or inadequate waterproofing. This can lead to further damage to the roof structure and may require remedial work to address.

Cracking

Vertical cracking internally and externally at panel junctions can occur, affecting both the aesthetic and structural aspects of the property. This may require remedial work to address and prevent further damage.

Variants and Alternative Names

British Housing houses are also known by alternative names such as Doxford and Lynn. These properties may have some variations in their construction, depending on the specific site and design requirements. For example, on sloping sites, concrete perimeter kerbs may be used to provide additional stability.

The front and rear walls of these properties may also be externally clad with tile hanging, timber shiplap boarding, or stone panels, depending on the specific design and aesthetic requirements.

Conclusion

British Housing houses, manufactured by John Lynn & Co. Ltd. between 1965 and 1967, offer a unique blend of architectural appeal and historical significance. However, they also come with certain risks and hazards that prospective buyers and investors should be aware of. Understanding the typical characteristics, potential defects, and inspection requirements of these properties is crucial for making an informed decision.

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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