When customers ask about the thermal insulation, fire resistance, water resistance, wind resistance, and rust resistance of our container house, how should we clearly convey this information to them?

The following content should be helpful to you.

Q.How you heat the house as it is very cold here?

A.In cold regions, insulation measures during the construction phase are fundamental, directly determining the energy consumption and thermal performance of new residential buildings. Subsequent heating solutions should be selected based on local climate, energy resources, and residential needs.

1. Core Thermal Protection Measures During the Construction Phase

The core of these measures is to reduce heat loss, block cold and heat exchange, and cover all enclosure structures such as walls, roofs, floors, doors and windows of the house.

Wall insulation

External wall insulation system: This is the most mainstream practice in cold regions, where insulation layers (such as extruded polystyrene board XPS, graphite polystyrene board, rock wool board, etc.) are laid on the outside of the wall, by a decorative layer. The advantage is that it can avoid the formation of cold bridges on the wall, and the insulation effect is more stable.

External wall insulation: Paste insulation boards (such as polystyrene board, gypsum composite insulation board) on the inside of the wall, which is simple to construct and cost-effective.

Sandwich insulation wall: We offer a variety of insulation core materials, such as EPS/ROCK WOOL/GLASS WOOL/FIRE PROOF EPS, and more.

Roof insulation

Adopting an inverted roof design: The insulation layer is laid above the waterproof layer of the roof to prevent the waterproof layer from aging due to temperature changes. Low water absorption insulation materials such as extruded polystyrene boards and polyurethane boards are commonly used, which are suitable for cold regions.

Upright roof: The insulation layer is located below the waterproof layer and needs to be paired with a vapor barrier to prevent indoor moisture from entering the insulation layer and reducing its effectiveness. It is suitable for relatively dry and cold areas.

Ground and underground insulation

Elevated floor: The design of the first floor elevated, using an air layer to block the cold air on the ground, while filling insulation materials inside the elevated layer.

Doors, windows and sealing insulation

Doors and windows: equipped with broken bridge aluminum profiles and hollow Low-E glass, three-layer hollow glass can be used in cold regions. Install multiple sealing strips and fill the gap between the door frame and the wall with foam adhesive to reduce air leakage; External windows can be equipped with insulation screens or cold proof covers.

Selection of Later Heating Plan

The common types of heating schemes in cold regions are:

Central heating (municipal heating)

Household gas heating

Electric heating system

New energy heating

Q.Is it waterproof and fireproof?Are all the houses tested before getting shipped? In regards for leak holes or wind noise?

A.1.Fireproof treatment:

Fire rating control of insulation materials

Grade A non combustible insulation materials such as rock wool board, foam ceramic board, and vitrified microsphere insulation mortar are preferred for exterior walls and roofs. These materials are heat-resistant and non combustible, suitable for high-rise buildings or densely populated residential areas in cold regions.

Fire protection design for constructing nodes

Door and window openings, parapets, expansion joints, and other areas shall be filled with Class A fire-resistant materials such as fire-resistant rock wool and fire-resistant sealant.

The decorative layer of the external wall insulation system should be made of non combustible or flame-retardant materials (such as fireproof coatings and fireproof bricks).

Supporting fire prevention facilities

Install smoke detectors, fire extinguishers, and fire sprinkler systems indoors according to regulations;

The roof is equipped with fire exits and maintenance ports to facilitate emergency operations.

2.Waterproof treatment:

Roof waterproofing

Inverted roof (preferred in cold regions): The waterproof layer is placed below the insulation layer, and the insulation layer (extruded polystyrene board, polyurethane board) covers the waterproof layer to avoid freezing, thawing, and UV aging of the waterproof layer. Priority should be given to selecting low-temperature resistant SBS modified asphalt waterproofing membrane (low-temperature flexibility ≥ -25 ℃) for the waterproof layer, combined with base treatment agent and sealant.

Roof slope ≥ 2%, set up drainage gutters and water outlets to ensure rapid drainage of rain and snow, and reduce water accumulation; An additional layer of waterproof membrane should be added as a reinforcement layer for areas prone to leakage such as gutters and eaves.

At nodes such as roof parapet walls and pipe roots, rounded corners and waterproof additional layers shall be applied, and metal pressure strips shall be used to fix the rolls to prevent edge warping and water leakage.

Exterior wall waterproofing

The external wall insulation system requires a crack resistant and waterproof mortar layer, which is pressed into an alkali resistant fiberglass mesh cloth.

Fill the gaps around the door and window openings with polyurethane foam adhesive, apply weather resistant sealant on the outside, and apply waterproof edging on the inside.

Choose exterior wall decorative materials with low water absorption rate (such as porcelain tiles and real stone paint).

The first floor is covered with a moisture-proof layer and a waterproof layer, with polyethylene polypropylene waterproofing membrane laid, and then a fine stone concrete protective layer poured.

3.Windproof treatment: dual dimensions of wind pressure resistance and cold air penetration prevention

Structural wind resistance design

The roof adopts high-strength roof truss or grid structure to enhance the wind resistance load capacity; Roof tiles or insulation boards are fixed with metal fasteners.

Structural columns and ring beams are installed on the exterior walls to enhance the overall integrity of the wall and resist strong wind impacts; The exterior walls of high-rise buildings need to undergo wind and pressure resistance calculations, and wind resistant trusses should be added if necessary.

The doors and windows are made of broken bridge aluminum doors and windows with wind pressure resistance level ≥ 6, and the glass is made of insulated tempered glass. The connection between the window frame and the wall is fixed with expansion bolts.

Whole house air tightness treatment: Fill the joints of the floor, walls, and roof with sealant; Install door bottom sealing strips and window gap sealing strips.

Q.How long is the service life? Is it rust-proof?

A.There is no unified standard for the service life of prefabricated container houses, which is mainly divided into two categories: design service life and actual service life

The design service life complies with industry standards. For temporary activity board houses, economical-grade color steel plates (e.g., 0.3-0.4mm thick) are selected, with a design service life of 5-8 years. If thickened color steel plates (0.5mm or above) + hot-dip galvanized light steel skeleton are used and proper anti-corrosion and rust-proof treatments are implemented, the design service life can be extended to 10-15 years.

The actual service life is influenced by three key factors:

Usage Environment: In dry, well-ventilated inland areas, the lifespan of the prefabricated house approaches the design limit. In coastal regions with high salt spray, humidity, heavy rainfall, or cold, snowy conditions, the lifespan may be reduced by 20%-30%.

Maintenance Status: Regular rust removal, repainting, waterproof inspection, and structural reinforcement can significantly extend the service life.

Disassembly and assembly frequency: Activity board houses support multiple disassembly and assembly cycles, but frequent operations will significantly reduce their lifespan. Generally, it is recommended to limit the number of disassembly and assembly cycles to no more than 3.

Q.What's the warranty period?Do you offer any after-sales support, maintenance, or warranties on the product?

A.Our prefab houses come with a 12-month warranty for the main steel frame and structural components, covering quality defects in materials and workmanship under normal use conditions.

Since our products are designed as temporary modular buildings with simple assembly, we don’t provide on-site after-sales maintenance services. But we will send you a detailed installation and maintenance manual together with the goods, which includes daily maintenance tips (such as rust prevention, waterproof inspection) and solutions to common minor issues. You can also contact our team via email for technical guidance at any time.