Decoration Design of Prefabricated Houses

The decoration design of prefabricated houses needs to be combined with the structural characteristics of the houses, achieving efficient renovation through modular assembly, functional area optimization, and concealed project control. Here are specific design ideas and case references:

I. Modular Assembly and Structural Adaptation Prefabricated houses often adopt a modular construction method. For example, the public housing project in Shenzhen, Guangdong, was assembled using 6,068 concrete modules, with a 70㎡ two-bedroom unit formed by the assembly of two half-modules. The decoration of such houses should prioritize the structural stability at module connections, avoiding damage to the factory-prefabricated load-bearing nodes. On-site construction should focus on optimizing the cast-in-place connection technology between modules, such as adopting low-noise and low-dust pouring techniques to reduce the impact on the surrounding environment. Meanwhile, modular design allows for flexible adjustment of space scale by adding or removing modules, providing a foundation for subsequent functional area renovations.

II. Functional Area Optimization and Space Utilization For small or old prefabricated houses, refined design is required to enhance space utilization. For instance, in a 22㎡ prefabricated slab structure renovation case in Shanghai, the designer transformed the original doorway into a shoe cabinet to create an entrance hall and planned the circulation route around it; the kitchen adopted a high-low cabinet design with household appliances embedded in the external countertop, solving the storage and operation problems in a 4㎡ space; the living room achieved a “living-bedroom integration” by installing a wall bed, and the bathroom and toilet areas were separated into wet and dry zones with a Japanese-style integrated shower room. The core strategies include:

1. Vertical Space Development: Utilize walls to install multi-layer shelves or hanging cabinets. For example, in the renovation of an old prefabricated brick-concrete house from the 1980s, the kitchen used movable shelves to supplement storage.
2. Multi-functional Furniture Application: Choose foldable, extendable, or hidden furniture, such as wall beds and extendable dining tables, to adapt to different scenarios.
3. Circulation Route Simplification: Reduce movement distance by arranging functional areas adjacent to each other, such as the coherent design of the entrance hall, kitchen, and dining room.

III. Concealed Projects and Material Selection The decoration of prefabricated houses should focus on controlling concealed projects, especially waterproofing and electrical circuit renovations. In the renovation of an old prefabricated brick-concrete house from the 1980s, due to the wall thickness exceeding 20cm, the layout could not be freely altered. The designer avoided structural risks by optimizing the original layout (such as an open kitchen and multi-functional secondary bedroom) and carried out extreme waterproofing treatment: the kitchen used small wall tiles with white grout and gray gradient floor tiles to enhance slip resistance; the bathroom area used both waterproof paint and tiles for double protection. Material selection should follow:

1. Lightweight and Environmental Friendliness: Avoid using overly heavy materials that increase the load on modules, and prioritize environmentally friendly materials such as low-formaldehyde panels and water-based paints.
2. Durability: For the joints of prefabricated slabs, use elastic sealants or waterproof membranes to prevent cracking and leakage.
3. Adaptability: For example, in the Shanghai case, the interior ceiling and facades were all made of fair-faced concrete, which not only conformed to the industrial style of prefabricated houses but also reduced material consumption for secondary decoration.