It’s time to go back to basics. In this blog post, we explore the details of modular construction and address frequently asked questions, such as the difference between portable and permanent construction and what to expect during the modular build process.
What is a modular building?
Modular buildings are constructed in segments or sections within a factory. Each segment, known as a module, is delivered separately to the site on a lorry. These modules are then connected on-site to form the complete building, often with multiple modules stacked to create multiple stories.
The key distinction between a modular building and a portable cabin is the ability to create larger buildings by connecting multiple modules. While a module has at least one open side for connection to the next module, a cabin is a self-contained structure transported as a complete building.
Term Confusion: Modular vs. Volumetric
The housing sector’s increased use of modular construction and other Modern Methods of Construction (MMC) has led to confusion surrounding the term “modular.” A broad definition of modular refers to structures composed of standardised units or sections for easy construction or flexible arrangement, which can be applied to various construction methods. Therefore, official government documents now classify these buildings as “Category 1 Modern Methods of Construction (MMC): 3D offsite (volumetric modular).” While the industry still commonly uses “modular buildings,” the term “volumetric modular buildings” is gaining traction as a more accurate description.
Regardless of the terminology, the undeniable fact is that volumetric modular construction offers substantial and tangible benefits for clients, users, and contractors alike.
Advantages of Modular Buildings
Extensive research and documentation demonstrate modular construction’s significant advantages beyond the ability to relocate, repurpose, or sell the building. Some key benefits include:
- Better site management for the local community: Modular construction reduces on-site disruptions, including noise, mess, and traffic, which benefits both the project site and the surrounding community.
- Enhanced sustainability: Modular buildings exhibit better sustainability compared to traditional construction methods. They generate approximately 90% less waste due to improved control over ordering, installation, and recycling practices. Additionally, the precise construction process ensures energy efficiency, reducing energy costs.
- Health and safety compliance: Building in a controlled factory environment enables stringent quality monitoring and meticulous attention to detail. This results in higher construction standards and enhanced safety for workers and occupants.
- Increased efficiencies: Modular construction offers advantages in terms of speed, cost, compliance, and durability. It provides practical and workable solutions to address the construction industry’s current skill and labour shortages.
While these benefits will be explored in more detail in future blog posts, it’s worth noting that modular construction minimises disruption, improves sustainability, enhances safety, and streamlines the building process.
Temporary, Portable, or Permanent?
Clients often inquire about portable buildings, which typically refer to cabins—an entirely different category from modular buildings. Modular buildings can be either temporary or permanent structures.
At PF Modular, all our new buildings are constructed to a permanent building standard, designed to have a lifespan exceeding 40 years. We use the same external cladding and roofing materials as traditional commercial buildings, ensuring durability and longevity. Even if you don’t plan to keep the building for that long, it will retain value and can be repurposed, relocated, or sold. The modular nature of these buildings allows for easy adaptation to different sites or layouts within your organisation.
What are modular buildings made of?
Modular buildings can be constructed using various materials. At PF Modular, we build “beam and post” modules, which consist of hot-rolled steel beams and posts with non-structural infill panels. This design maximises flexibility in layout and allows for large windows and open internal spaces.
Once the steel frame is structurally sound, it is clad with an insulated cladding system chosen based on your preferences and budget. Options range from basic composite steel insulated panels to timber accent walls and other decorative features. We strive to create unique, standout buildings that align with your vision.
Our modules come fully equipped with all your required specifications, including windows, doors, plumbing, electrical systems, and decoration. We offer a comprehensive range of interior fit-out options, right down to appliances like fridges and kettles.
Building Sizes and Flexibility
To ensure cost-effectiveness, our modules are typically designed to fit within the transportation dimensions of a lorry. The modules are generally between 2.6m and 3.3m wide, 9m to 12m long, with an internal ceiling height of 2.4m to 3.0m. However, bespoke sizes can be designed to optimise your specific building requirements.
Modules are commonly joined along the long edge, with multiple bays forming a building footprint. For instance, five bays of 10m x 3.0m sections create a building equivalent to a typical double classroom block with WCs and storage. Modules can also be stacked to create multi-story structures, with internal or external stairs options.
Modular construction’s flexibility is vast and depends on your needs and budget. Starting the project early allows us to optimise the layout for factory construction, maximising on-site value.
What to Expect During the Modular Build Process
While PF Modular cannot speak for other suppliers, we prioritise consistency and provide a single point of contact for your project. Our team members guide you from the initial discussions to the final sign-off of the completed building on-site. With extensive experience and knowledge in the industry, we ensure your project runs smoothly and minimises mistakes and misunderstandings.
We collaborate with you to ensure the planned and approved building integrates seamlessly with the modular process. This includes optimising layouts for factory work, determining window and door placements, allocating space for services, and considering interactions with existing buildings for services and fire planning.
We require more detail earlier to enable extensive offsite work during the process. This approach minimises on-site changes, which can be time-consuming and costly. We guide you through each stage, helping you specify all necessary details and maximise the benefits of modular construction.
Our service encompasses the entire project, from planning approvals and building regulations to site preparation, foundation work, transport, craning, siting, interior fit-out, services, landscaping, and final building handover. We take responsibility for delivering your project on time and within budget. Alternatively, we can collaborate with your chosen contractors to ensure a smooth build process.
We will coordinate with your preferred suppliers if your new building needs to connect to existing IT and communication networks or fire alarm systems.
With over 17 years of experience as a business and a team with over 75 years of collective industry experience, we are well-equipped to address any questions or concerns. Stay tuned for future blog posts discussing how the right approach to modular construction overcomes perceived challenges. Additionally, explore our in-depth posts on getting the best school buildings and the materials used in modular classrooms, including exterior and interior considerations.
Find out more about Modular Offices, Classrooms and Marketing Suites – or if you want to discuss a modular project, please get in touch today.
