Modular homes are transforming the housing industry with the latest building technology advancements to smarter, resilient, and sustainable houses, thanks to the precision-engineered modular technology which creates truly affordable housing for homeowners and reduces construction costs and time for builders. Modular homes are constructed off-site in a factory setting, after completing all modules or sections, they are joined together using interconnections and delivered to the intended construction site to be assembled on a solid foundation. Modular homes are available in various floor plans and story layouts, homeowners can choose either single-story homes, multi-story homes, custom-designed modular buildings and even high-end luxury builds.
In this blog, we’ll look at how modular builders can construct the world’s most stylish modular homes and the most innovative built environment, and how high-quality modular construction offers multiple benefits to homeowners.
What is a Modular Home?
A modular home is built off-site in an indoor factory setting where all modules (sections) are manufactured under quality-controlled conditions and designed according to specific plans, once all modules are completed, they are transported to the intended site where they are assembled and installed into a foundation.
Modular building manufacturing makes the construction process 50% faster while it reduces the overall construction costs and boosts profitability, this is due to the innovative building systems used such as offsite manufacturing (OSM), offsite modular construction, and modern methods of construction (MMC).
The modular home is also referred to as Factory-built, System-built or Prefabricated houses, Ready-to-Move (RTM) Homes, Volumetric Units, Permanent Modular Construction (PMC), Temporary Modular Construction (TMC), Portable Modular Buildings or Relocatable Buildings. Also, advanced materials and highly sophisticated processes are used to create climate-resilient and energy-efficient homes that differ from other traditional site-built construction.
What Comprises a Modular Home?
Modular homes consist of prefabricated components called modules/bays or several prefabricated units which include basic structural components such as building envelope, and walls (exterior and interior walls, flooring, windows and doors), however, to ensure quality and compliance with the international building code and fire codes, all modules are manufactured under controlled conditions. Modular buildings comprise the following:
Structural framing
Structural framing is generally made from high-strength and corrosion-resistant metal materials such as hot-dip galvanized steel, light steel structure systems and aluminum extrusions. Homeowners can choose from a wide range of structural framing including pre-engineered structural systems, modular housing systems (MHS), pre-engineered MHS aluminum framing, steel-framed modular structures, steel-frame prefab homes, light steel structure systems, hot-dip galvanized steel frame, zinc coated structural steel frame, structural aluminum framing, custom-made metal structures.
Other components such as welded steel connections and bolted connections are used. Also, modular home structural framing can be made from wood stick-framed homes, wood-framed construction, modular wooden homes (SIP homes), conventional stick frames, timber frame homes, and more.
Walls
Modular home walls are essentially made from materials such as drywall, vinyl-covered wallboard (or paneling), vinyl-on-gypsum (VOG) wall panels, PVC wall panels and polyurethane sandwich panels, apart from that, leading-edge modular walls are available including prefab wall system, soundproof wall panel, acoustic wall, adaptable wall partitions, water-resistant and easy to clean wall, ceiling solutions, transparent glass wall, floor-to-ceiling glass wall, wood slat wall panel, solid wooden wall panel, wood panel wall, MDF wall, 3D wall panel, 3D-printed concrete wall, stones wall, shiplap wall paneling, decorative wall panels, white-wash brick, red brick and more.
Modular home siding comes in different materials such as vinyl siding, masonry, brick facing, engineered wood or aluminum, and cement fiber board, also, to meet the requirement of modular construction, a large selection of fire-proofing, water-proofing, watertight system sandwich panel and rust-resistant boards are available for builders and architects to choose from.
Roofing
Modular home roofing are highly durable roofing systems, they are characterized by their thermally resistant properties, impact-resistant material and UV-resistant coating.
Given its precision-engineered roof systems, lightweight materials and watertight roof panels, modular home roofs can withstand the impact of climate changes and adverse weather conditions such as extreme heat, cold temperatures and uplift wind loads. The most common types of modular roofing include: built-up roofing systems (BUR), asphalt shingles, synthetic shingle roofing, tab asphalt shingles, slate roofing, TPO (thermoplastic polyolefin), PVC roof (polyvinyl chloride), PVC roof membrane, fastener metal roofing, standing seam metal roofing, EPDM roofing system (Ethylene Polypropylene Diene Monomer), roof coating systems and spray foam.
Modular home roofing comes in a wide range of materials such as wood, metal, steel, concrete, asphalt, clay, and slate, they can be also customized to fit the functional and aesthetic requirements of different home styles.
Doors and Windows
Modular home doors and windows are designed to deliver outstanding thermal insulation, superior soundproofing, and maximum air and water resistance, this provides robust-engineered doors with maximum airtightness and energy efficiency.
A wide range of modular homes is available including interior and exterior doors, sliding doors, wood doors, glass doors, aluminum doors, steel doors, steel entry doors, storm doors, etc. Moreover, the most advanced window systems and high-performance materials are available including aluminum alloy windows, stainless steel windows, FRP windows, storm windows, glass windows, double-hung windows, floor-to-ceiling windows, triple-glazed windows and skylights.
Modular home windows are available in numerous finishes, styles, and shapes, such as squares and rectangles (vertical or horizontal). To prevent air penetration, water infiltration, wind pressure and sound, windows and door units are sealed using superior weather seals, gaskets and operating hardware.
What Type of Foundation is Used For Modular Homes?
Modular home foundations are reliable and highly resistant in climates characterized by extreme weather conditions, cold/hot temperatures, frost, high wind, humidity, and moisture, modular homes are generally assembled on top of robust foundations that are made from concrete footings and brick piers when it comes to selecting the right type of foundations, there are several factors to consider, including soil type (terrain, lot, or ground), climates, elevation, lot slop, local building code, home-building guidelines, budget and mortgage requirements. Here are the most common types of modular home foundations:
Onsite foundations, full perimeter foundations, basement foundations, concrete pier foundations, pier and beam foundations, pillar or block foundations, concrete blocks skirting, concrete base or slab foundations, poured concrete slabs, crawl space foundations, or reinforced concrete bases.
Do Modular Homes Come with Electrical and Plumbing?
Modular homes are fully pre-wired off-site, each module comes with a complete electrical system, including electrical outlets, electrical connections, electrical wiring, power distribution box, power cables, power outlets, lighting fixtures, light switches, and light fittings, also, solar power panels can be installed.
Modular homes come with plumbing fixtures, water systems, drainage systems and sewage pipes, while modular homes’ kitchens and bathrooms come with vent stacks, water supply lines and waste line installation. Modular homes include ductwork, heating systems, ventilation and air conditioning (HVAC) and gas lines. However, to prevent hazards, modular homes’ electrical and plumbing systems should adhere to safety standards.
Do Modular Homes Come with a Kitchen?
Modular home kitchens are available in different sizes, styles and layouts (U-shaped, L-shaped or Straight), most modular home kitchens include an open concept kitchen with an open floorplan, dining room or tailor-made spaces in one space, in addition to that, modular kitchens come fully equipped with built-in appliances, cabinets (base cabinets, wall cabinets and custom kitchen cabinets), countertops, worktops, kitchen utensils, and lighting.
Homeowners can choose from various types of kitchens, including an open-concept kitchen, classic kitchen design, contemporary kitchen, custom modular kitchen and budget-friendly kitchen. Also, modular home kitchens are available in limitless design features, materials, colours, high-end paint and finishes.
How Modular Homes are Installed?
Modular homes can be installed in 1 to 3 days, all the modules are fully prefabricated off-site and come ready for immediate installation on a foundation such as a level ground, basement, concrete slab, concrete block or a stable. Advanced building methodologies and lifting technologies are used for on-site assembly, while modules or sections are placed using cranes and installed by skilled labourers onsite.
Modular homes include unique architectural elements, comfortable bedrooms, dining and living areas, functional kitchens, fully built bathrooms and ergonomic spaces, these modules are installed according to different configurations (side-by-side, end-to-end, or stacked), however, to form the complete modular home, all modules have to be connected using either inter-connections, inter-module connections or inter-module connections (IMCs). After completion of installation, a final inspection should be conducted, while utilities such as electricity, water and septic systems should be connected.
Modular Homes Applications
Modular construction is a modern alternative to conventional site build, modular housing buildings utilise cutting-edge materials to build highly sophisticated houses which can be used as permanent or temporary homes:
Permanent Modular Construction (PMC)
Permanent modular construction is intended to accommodate the needs of growing families and suit their lifestyle, permanent modular homes feature unique plans and comfortable living spaces, and homeowners can choose from different types of permanent modular homes, including contemporary homes, single or multi-family housing, multi-unit residential buildings, modular apartments, modular housing complexes and luxury modular villas. Also, permanent modular homes come in single-story homes, single, 2-story layouts or multi-story structures, low-rise, medium-rise houses and residential high rises.
The permanent modular structure is reliable and long-lasting makes them suitable for modular wooden houses, mountain cabins, bungalows, farmhouses, healthcare facilities, hotels, restaurants and commercial spaces. Permanent modular homes are typically made from concrete, steel, or wood, they are available in different sizes and shapes and come outfitted with fixtures and finishes.
Construction
Modular buildings are high-quality, affordable housing solutions that meet the requirements of large construction projects such as 500+ unit apartments, mixed-use luxury apartment complexes, modern apartment buildings, luxurious accommodations, single-story, multi-story schools, hospitals, and multiple-story modular construction (blocks or separate units), each unit comes with flexible floor layouts, partitioning and column-free open space.
Also, temporary modular buildings are widely used to support the construction of on-site facilities with the most durable temporary offices, individual work areas, meeting rooms, site accommodation for workers, labor camps, material stores, warehouses and temporary structures. Modular buildings are widely used to build site amenities like on-site canteens and catering, kitchens, sanitation facilities, and other welfare facilities.
Modular Luxury Hotels
Modular construction plays a significant role in the development of luxury hotels, the most advanced construction technologies are used to meet hotel architectural design for modular luxury hotels, luxury modular resorts, prefab hotel buildings, hotel chains and airport hotels, apart from that, high-quality materials and high-end finishes are used to build one-star to 5-star rating hotels, boutique hotels to luxury hotels, small to medium-sized and large hotels. Besides this, modular luxury hotels come with soundproofing walls, ceilings, flooring, countertops, fixtures and amenities that suit hospitality industry buildings such as restaurants, bars, health clubs, and recreational facilities.
Modular construction is excellent for conference facilities, leisure facilities, modular camp buildings, entertainment complexes, motels, dormitories, vacation rental cabins, suburb hotels and resorts located around beaches and islands.
Modular Retail Buildings
Modular retail buildings are becoming the first choice for retailers, thanks to the high-strength structure, thermally efficient insulation and airtight envelope which deliver the highest industry standards to diverse retail set-ups including, franchises, retail superstores, grocery stores, supermarkets, shopping centres, roadside modular shops, storefront solutions, drive-thru restaurants, bakeries, casinos, commercial facilities, office buildings, mixed-use buildings and temporary exhibition halls.
Modular retail units are engineered to offer exceptional weather-proof modular buildings that withstand extreme weather conditions like heavy rain, high winds, severe storms and hurricanes. Retailers can choose from endless modular solutions and limitless sizes, layouts, materials, colour, appearance and signage, also, modular retail buildings are highly customizable and can create the most attractive speciality structures, while they can be fully fitted and completed off-site within days.
Modular Health Care Facilities
Modular healthcare facilities are prefabricated to provide the healthcare system with a fully functional medical centre, due to the factory-built modules, strict quality checks and standardised construction, modular healthcare buildings offer patients high-quality structures and a comfortable healthcare environment, also, modular healthcare facilities can meet the standards of different healthcare facilities including, multi-floor hospitals, hospital operating theatres, mobile hospitals, diagnostics, emergency rooms, exam rooms, patient rooms (single and multi-rooms), rehabilitation centers, laboratories and pharmacies. Besides this, mobile modular hospitals play a crucial role in healthcare emergencies like disasters, epidemics, extreme weather events and humanitarian crises, they are also deployed in remote areas as emergency response infrastructure, emergency healthcare facilities, portable clinics, field hospitals, temporary hospitals, mobile medical units and triage center.
Education
Modular school buildings are an excellent alternative to traditional school buildings, they are built to meet the needs of modern school architecture and educational facilities, permanent modular schools offer quality education-related buildings including, classrooms, school complexes, academic campuses, lecture halls, student learning centres, libraries, science labs, computer labs, administrative areas, modular cafeterias and dining halls, canteens, multipurpose spaces, sports facilities, recreational spaces, students housing and bathrooms.
Modular school buildings vary in size, design, architectural features and customization options, customers can choose from a wide range of modular school buildings including single-story modular schools, two-story modular schools, standalone buildings, multi-classroom buildings, and permanent modular classrooms. Also, complete self-contained schools such as temporary educational facilities, temporary modular classrooms, portable classrooms or mobile classroom buildings, can be prefabricated to accommodate the needs of educational infrastructure in remote areas where modular classrooms can create a safe and positive learning space for students, besides this, temporary school buildings can be quickly relocated to tackle new challenges in other locations, while they can withstand future relocations and repurposing and reinstallation.
Construction Process of Modular Homes
Modular homes consist of factory-built modules which are processed in a sophisticated assembly line, after that, the complete modular home is transported to the homesite by a truck or a crane, and then all the modules or sections are assembled on a permanent foundation. From the initial design phase to off-site manufacturing to final onsite assembly, here’s a detailed overview of the building process of modular homes:
Design and Planning
Modularity involves modularizing any modular design from a standard building to complex buildings to luxury modular homes, at the planning and design stage, architects and engineers prepare drawings using building information modelling (BIM) systems and other software such as computer-aided design (CAD) and 3D models, once modular home plans are approved by the owner and finalized by the manufacturer of the components, the building permit application is submitted for approval to the local authorities.
Besides that, modular homes can be custom-designed to accommodate families’ wants and needs, homeowners can choose from an extensive range of high-end customization features, high-quality building materials, structural components, exterior and interior walls, thermal and acoustic insulation, airtight building envelope, roofs, ceilings, sheathing, flooring, doors, windows and fixtures.
Factory Construction
Modular structures are constructed separately using precise engineering methods such as automated production, robotic systems and computerized numerical control (CNC), while they are constructed in an assembly line according to specific plans and undergo stringent quality checks. The modular building process involves creating building modules such as suites, bedrooms, dining and living areas, bathrooms, kitchens and complex building elements.
Modular homes are made of durable structures and high-quality building materials such as structural steel, wood framing, insulated sandwich panels, drywalls, floor systems, roofing, finishes, fixtures, cabinetry, plumbing and electrical systems. Once the assembly is completed, the complete modular home is sealed and thoroughly inspected.
Insulation
Insulated modular homes are excellent for areas exposed to harsh weather conditions, given their insulation materials, modular homes can create a highly insulated, airtight and windtight building envelope which maintains comfortable indoor temperatures year-round. Apart from that, modular home insulation forms a barrier against air movement and prevents air leakage, this reduces heat transfer and keeps modular homes warm in cold winter while it makes the interior cool in hot summer, therefore, thermal insulation provides a high R-value in walls (R-38), ceilings (R-49) and flooring (R-25), this contributes to energy efficiency and at the same time it saves money on heating and cooling bills. Also, insulation is not susceptible to moisture, mold and mildew growth.
Homeowners can choose from various types of insulation, including structural insulated panels, polyurethane (PUR), mineral wool, rock wool, fiberglass rolls/batts, blanket insulation, loose-fill, cellulose, open-cell spray foam, closed-cell spray foam, rigid foam boards, radiant barrier insulation, heavy-duty insulation, and more.
Pre-Wiring and Plumbing
Modular homes come prewired with electrical systems and plumbing components needed to operate a house, during the manufacturing process all wiring and pipes are installed and tested off-site within the structure of a modular home, once the modules are in place, the pre-wired components should be connected with the electrical supply and tested by an electrician to begin working. Apart from being fitted with all the necessary electrical, mechanical, and plumbing connections, modular homes come pre-fitted with water supply lines, sewer lines and other on-site utilities, also, modules include electrical components, switches, waste pipes, fixtures, receptacles, tubes, ducts, HVAC systems, heating, cooling, venting stacks, fire protection, interior fittings, outlets and more.
Safety is crucial for any construction project, modular homes should comply with relevant building codes such as electrical, mechanical (HVAC) and plumbing systems, while final installation on-site should comply with local regulations and adhere to the highest standards of performance.
Finishing Touches
Modular homes are designed to create comfortable, functional and modern living spaces that reflect unique styles and sophisticated design, modular homes feature an aesthetically pleasing interior and elegant exterior; builders and architects can choose from endless exterior finishes for the building facade, roofing, siding, cladding, doors, windows, large glass facades, and exterior light fixtures, classic colours, smooth finish and textures.
Modular home interiors incorporate high-end finishing, modern amenities and luxury features, in addition to that, homeowners can choose from a large selection of drywall, tile, trim, paint, colors, flooring materials (hardwood flooring, laminate and vinyl flooring), countertops (marble or granite), bathroom fixtures, hardware, lighting and endless customization options.
Modular Home Design
Modular homes are designed to meet the needs of homeowners and exceed their expectations, however, modularizing any standard or complex building design involves using the latest technologies and software such as:
Computer-Aided Design (CAD)
Building Information Modeling (BIM)
Computer Numerical Control (CNC) machining
Design for Manufacture and Assembly (DfMA)
Modular Home Customization
Modular homes can be customised to meet the living requirements and preferences of homeowners, for that, smart modular design is used to deliver superior quality homes, homeowners can choose from different sizes, layouts, floor plans, limitless styles, and customization features that reflect lifestyle and well-being. Modular homes can be tailored to accommodate the changing needs of families over time, apart from that, modular homes can cater to different budget requirements.
Modular homes come with open-concept living spaces, multi-functional spaces, spacious bedrooms, energy-efficient building envelopes, and a large collection of modern kitchens, cabinetry and fixtures.
What Are The Benefits of a Modular Home?
Modular homes offer unmatched benefits over traditional homes:
Long-lasting
Permanent modular homes are a long-lasting investment, they are built to last longer than traditional site-built homes, due to the high-quality construction, framing, material and insulation, modular homes can last for 60-100 years or more, also modular homes come with a warranty of 50 years on workmanship, structure and structural components.
Temporary/relocatable or portable modular buildings can last over 30 years. However, the average lifespan of modular homes depends on several factors such as the type of foundation, structural integrity, proper site preparation, materials durability, manufacturing techniques, workmanship, weatherproofing and compliance with the building code.
Modular homes are easy to clean and require regular cleaning and minimal maintenance over the year. Temporary building facilities can be relocated or re-used in other construction projects, and at the same time, this type of mobile building can withstand relocation and installation.
Weather Resistance
Adaptability is critical in construction, modular homes are adaptable to changing needs because modular homes are structurally stronger than site-built homes, each module or section is designed to provide weather resistance in extreme climates, thanks to its airtight insulated walls, roofs, ceilings and facades which allows modular homes to maintain year-round comfort, enhance the efficiency of living environment in any climatic conditions and deliver improved indoor air quality. Moreover, modular homes are climate resilient homes, they are built to resist high wind loads of up to 180 mph and withstand environmental factors such as weather-related issues, extreme heat or intense cold, heavy snowfall, catastrophic conditions, earthquakes, flood, hurricanes, hail, humidity, rust, corrosion, saltwater, etc.
Fast Construction
Nowadays, nearly 90% of single-family homes and multifamily buildings are constructed offsite in highly-controlled settings, modular homes take approximately a few weeks to build and can be installed faster in 2 to 3 days, while traditional homebuilding takes normally months to years to construct.
Modular homes are stress-free buildings and can be completed in a quick construction timeline, due to the mechanization of construction and offsite manufacturing (OSM), the process of building a manufactured modular home takes only a few days, after completion of all modules, minimal assembly work is required on-site. Also, modular homes are not affected by weather-related delays or other setbacks that slow down the construction process such as material delivery or issues labor shortages.
Cost-saving
Modular homes are cost-effective housing, they are mainly designed to meet the growing demand of communities, due to the standardized factory setting, streamlined construction process and strict quality controls, modular homes are 30% less expensive than traditional homes, and can save up to 25% of the costs of construction materials, labor and equipment. Apart from that, modular construction is 30-40% faster than traditional construction, making it a smart investment for builders and homebuyers.
Therefore, modular homes allow business owners to realize a return on investment within shortened timelines. Also, when compared with site-built homes, modular homes are highly durable and require less maintenance over time, which increases the long-term value of modular homes, besides this, modular homes are energy efficient and help homeowners realize long-term savings on utility bills and upkeep without sacrificing comfort. Hence, modular homes can save time and money.
Energy-efficiency
Modular homes are built to maximize energy conservation and boost energy efficiency, thanks to the high-quality insulation material which minimises heat loss in winter and keeps the interior cooler in the summer and warmer in the winter, regardless of the weather conditions, modular homes can maintain a consistent temperature year-round, consequently, this reduces heating and cooling costs and save money on energy bills over time.
Modular homes are designed to meet energy-efficiency certification requirements for LEED certification (Leadership in Energy and Environmental Design) and Passive House standards, however, to achieve the maximum energy star rating, modular homes feature high R-value insulation, high-efficiency HVAC systems and energy-saving features such as double or triple-glazed windows, low-E windows, energy star doors, LED lighting, renewable energy systems and solar energy systems. Compared with traditional building practices, modular homes can reduce carbon footprint and lower 20.7% CO2 emission which minimizes the impact on the environment.
Environmentally-friendly
Modular homes are sustainable living solutions, due to green construction practices and energy-efficient building technologies, modular homes can reduce the ecological impact of construction on the environment, nearly 30% of construction materials end up in landfills, because of the factory-based construction and sustainable materials, off-site modular construction increases material utilization, which reduces waste and minimize landfill space, modular homes are unlike site-built homes or stick-built construction which use traditional building methods. Also, modular homes can be disassembled and moved to different locations if needed, while they can be reused for future projects or recycled. Hence, modular homes are an attractive option for eco-conscious homeowners.
What are the Types of Modular Construction?
There are several types of modular construction, but the choice of modular construction depends on project requirements, here are the most popular options:
2D Panels
2D panels are an economically viable choice for large-scale modular buildings, they are known for their affordability and adaptability, which makes them excellent for construction projects where design flexibility is a priority such as high-end residences, open-concept spaces, intricate modern structures and diverse construction projects. Also, due to its lightweight and flat nature, 2D panels are cheaper to transport and easy to deliver to the building site. 2D panels come either finished or unfinished, while windows, doors, air-conditioning, ventilation and plumbing conduits can be installed. 2D panels are also referred to as 2D panelised modular construction or long-spanned 2D-panel construction.
3D Modules
3D modules utilise three-dimensional to form structural elements for large buildings, almost 95% of the 3D modules are pre-engineered in a factory-controlled setting where all components are crafted to perfection to meet different architectural requirements, once 3D modules are delivered, minimal assembly is required on-site, while modules can be simply connected to the foundation and pre-existing structures, and need also to be hook-up to utilities like plumbing systems and electricity connections. 3D modules come either fully-finished or unfinished. Also, modules are excellent for complex environments such as kitchens, bathrooms and add-ons. The 3D modules/units are also referred to as 3D volumetric solutions.
Hybrid Modular Construction
Hybrid modular construction is a cutting-edge building method which combines the best of 2D panels and 3D modules, these two elements are among the most widely adopted modular approaches in the world of construction, however, to create hybrid modular construction and streamline on-site installation, factory-controlled manufacturing incorporates both 2D panels and 3D modules, 2D panels offer more flexibility in building design, cost-saving and simple logistics, while 3D modules cater to diverse project requirements and deliver superior quality construction, these characteristics make it ideal for customized homes, retail spaces, resorts, large structure, schools, sport facilities, recreational spaces, bridges, transport hubs, and more. Hybrid modular construction is known as hybridized construction.
Conclusion
Modular homes are shaping the future of the housing industry, thanks to their innovative building systems, faster build time and long life spans which makes them a great choice for homeowners, builders, developers and architects alike. In conclusion, modular homes are an affordable alternative to site-built homes, they offer builders the most modern living spaces and quality amenities, homeowners can choose from a wide range of modular homes that range from economical to luxurious, and come in attractive styles, open-concept living areas, configurations, shapes, finishes and endless customization features.
