Understanding the Langlands Mansard House

The Langlands Mansard house, a unique architectural gem, stands as a testament to the innovative construction techniques of the early 20th century. Designed by the renowned McTaggart & Mickel, this property type was built in 1926, with only two known examples ever constructed. Often referred to simply as “Langlands,” these semi-detached houses are a rare find in the UK property market. This article delves into the intricate details of the Langlands Mansard house, offering valuable insights for potential buyers and investors.

Historical Context and Manufacturing Details

The Langlands Mansard house emerged during a period of architectural experimentation and innovation. McTaggart & Mickel, the designers behind this unique property, were pioneers in the field of system-built homes. Their approach combined traditional craftsmanship with modern materials, resulting in a distinctive style that set the Langlands apart from other properties of the era.

Constructed in 1926, the Langlands Mansard house was part of a broader movement towards more efficient and cost-effective building methods. The use of prefabricated components and innovative materials allowed for quicker construction times and reduced costs, making these homes an attractive option for buyers at the time.

Key Characteristics of the Langlands Mansard House

The Langlands Mansard house is characterized by its distinctive architectural features and construction techniques. These properties are semi-detached, with a mansard roof covered in asphalt and asbestos cement slates. The external walls are rendered with roughcast, providing a textured finish that adds to the property’s unique aesthetic.

One of the most striking features of the Langlands Mansard house is the bay window on the ground floor front elevation. This architectural element not only enhances the property’s visual appeal but also allows for increased natural light within the home.

Construction Details

The construction of the Langlands Mansard house is a fascinating blend of traditional and modern techniques. The substructure consists of concrete strip footings and a vented brick underbuilding, providing a solid foundation for the property. A damp-proof course (DPC) is also included to prevent moisture ingress.

The external walls are constructed using a platform frame method, with storey-height timber frame panels overlaid with bituminous felt. These panels are directly clad with rendered 2″ breeze concrete blocks and lined with plywood. In the kitchen, asbestos cement sheets are used for lining, reflecting the materials commonly used during the period.

The mansard roof is constructed with timber sarking, bituminous felt, and asbestos cement slates. This combination of materials provides durability and weather resistance, essential for the UK’s often unpredictable climate.

Internal Features and Layout

Inside the Langlands Mansard house, the layout is both practical and aesthetically pleasing. The separating wall between the semi-detached units is made of 4″ breeze concrete blocks lined with plywood, ensuring sound insulation and privacy.

Partitions within the home are constructed using timber studs lined with plywood, providing flexibility in the internal layout. The ground floor features tongue-and-groove (T&G) boarding on timber joists, with a concrete floor in the kitchen for added durability. The first floor also uses T&G boarding on timber joists, creating a cohesive and sturdy structure.

Ceilings throughout the property are lined with plywood, with asbestos cement sheets used in the kitchen for added fire resistance. The roof is supported by timber rafters and sarking, with tiles providing the final weatherproof layer.

Potential Hazards and Risks

While the Langlands Mansard house boasts many attractive features, potential buyers and investors should be aware of certain hazards and risks associated with this property type. The use of asbestos cement sheets in the kitchen and roof presents a potential health risk if disturbed. Asbestos is a known carcinogen, and any renovation or repair work should be carried out by professionals trained in asbestos handling and removal.

Additionally, the timber frame construction, while innovative for its time, may be susceptible to issues such as rot and insect infestation. Regular inspections and maintenance are essential to ensure the structural integrity of the property.

Defective Premises Act Considerations

The Langlands Mansard house is not classified as defective under the Defective Premises Act. However, due to its age and unique construction methods, it is crucial for potential buyers to conduct thorough inspections and assessments before purchasing. Engaging a qualified surveyor with experience in system-built properties can help identify any potential issues and provide peace of mind.

Inspection Tips for the Langlands Mansard House

When inspecting a Langlands Mansard house, there are several key areas to focus on to ensure the property’s condition and safety:

1. Roof Inspection: Check the condition of the mansard roof, paying particular attention to the asbestos cement slates. Look for signs of damage or wear, such as cracked or missing slates, and ensure that the bituminous felt is intact.

2. External Walls: Examine the rendered external walls for cracks or signs of water ingress. The roughcast finish should be even and free from significant damage.

3. Timber Frame: Inspect the timber frame for signs of rot or insect infestation. Pay close attention to areas where the timber meets the ground, as these are more susceptible to moisture-related issues.

4. Asbestos Management: If asbestos cement sheets are present, ensure that they are in good condition and not disturbed. Consider having an asbestos survey conducted to assess the risk and determine if any remedial action is necessary.

5. Damp-Proof Course: Verify that the damp-proof course is functioning correctly and that there are no signs of rising damp within the property.

6. Structural Integrity: Assess the overall structural integrity of the property, including the condition of the floors, ceilings, and partitions. Look for any signs of movement or settlement that could indicate underlying issues.

Common Defects in Langlands Mansard Houses

Despite their unique charm, Langlands Mansard houses may exhibit certain common defects due to their age and construction methods. Being aware of these potential issues can help buyers and investors make informed decisions:

• Asbestos Concerns: As previously mentioned, the presence of asbestos cement sheets in the kitchen and roof poses a potential health risk. Proper management and, if necessary, removal by professionals are essential.

• Timber Frame Deterioration: Over time, the timber frame may be prone to rot and insect damage. Regular inspections and maintenance can help mitigate these risks and preserve the property’s structural integrity.

• Moisture Ingress: The rendered external walls and bituminous felt overlay can be susceptible to water ingress if not properly maintained. Regular checks and repairs can prevent moisture-related issues from developing.

• Roofing Issues: The mansard roof, while durable, may require periodic maintenance to address issues such as cracked or missing slates and damaged felt.

Conclusion

The Langlands Mansard house is a unique and historically significant property type that offers both charm and character. For home buyers and investors, understanding the intricacies of its construction and potential risks is essential to making an informed decision. By conducting thorough inspections and engaging experienced professionals, you can ensure that your investment in a Langlands Mansard house is both safe and rewarding.

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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