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Demountable Buildings Supplier

  • Stable System With 10 Years Production Experience
  • More Than 15 Years Life Span
  • Parts and Equipment of Container House with CE Certificate
  • Fast Delivery Time
  • 7/24 Sale & Tech Support

Your Reliable Demountable Buildings Supplier in China

Sunyda demountable building is combined by 20ft standard container house, with connection kit water proofing rubber, steel board and screw. Whether to weld or not will depend on local special condition. It can go up to 3 floors.

This kind of demountable building could include stair, balcony, electrical and plumbing system. If inside fittings like A/C, water heater, sanitary ware, kitchen, bed, etc. are required, they can be shipped together with the demountable building. As Sunnyda house has selected suppliers for those equipment, all are CE certified.

Sunnyda demountable building can feature gable or slope roof, light steel structure and top roofing is single steel sheet or sandwich panel.

A demountable building can be used for hotel, office or dormitory etc. Custom made according to your layout or our architect and interior designer can design for you as per your detailed local requirement to fit any climate, and other special needs in functionalities. Different colors and decoration materials are available to choose from.

Sunnyda is your premier demountable buildings manufacturer!


120ft DimensionExternal Size(mm)6058(L)×2438(W)×2791(H)
Internal Size(mm)5888(L)×2225(W)×2471(H)
Roof typeFlat roof with slightly slope. Roof drainage system
Floors allowed≤ 3 floors
2Design specificationLift span20 years
Floor live load2.5 KN/m²
Roof live load1.0 KN/m²
Wind load1.16 KN/m²
Seismic proof grade8 grade
3StructureColumnGalvanized cold roll steel, thk 3.0mm, Q235B
Primary roof beamGalvanized cold roll steel, thk 3.0mm, Q235B
Secondary roof beamCold roll C steel, thk 1.5mm, Q235B
Primary floor beamGalvanized cold roll steel, thk 4.0mm, Q235B
Secondary floor beamGalvanized cold roll steel, thk 2.0mm, Q235B
Paint40μm epoxy zinc rich primer, 50μm chlorinated rubber topcoat
Maximum temperature500°C
ColorAny RAL color
4RoofRoof boarding0.5mm PPGI steel sheet, white grey
Insulation50mm mineral wool, 60kg/m3, fire rating A, non-inflammable
Ceiling50mm EPS sandwich panel (0.4mm PPGI/50mm EPS/0.4mm PPGI)
Or rock wool
5FloorFlooring2.0mm PVC flooring,
Sub-floor18mm fiber cement, density≥ 1.3g/cm3
Insulation(optional)75mm rockwool, 60kg/m3, fire rating A, non-inflammable
Base plate0.5mm PPGI steel sheet, white grey
6Wall panelsThickness60mm EPS sandwich panel, 0.4mm PPGI/60mm EPS/0.4mm PPGI, PE paint
Color white
Insulation12kg/m3 EPS,
Option60mm rock wool sandwich panel, insulation 100kg/m3 rock wool, A grade fire rating, non-inflammable
(CE certificate)
Insulation40mm rock wool
MaterialAluminum frame sandwich panel door
Qty1 pc
8Window with rolling shutter
(CE certificate)
Frame materialUPVC
GlassDouble glazed toughened glass, 5+9A+5mm
Qty1 pc
9ElectricityElectricity SystemDifferent electrical standards to match with most countries in the world; such as CE, UL, CSA, AS, 220~250V
Electricity wireInput wire 4mm2, stand type A/C wire 4mm2, wall type A/C wire 2.5mm2, switch 1.5mm2
SocketFit for local standard, 3 pcs
Switch1 pc
LED lightDouble 1200mm LED light, 2 pcs
10Plumbing System (Option)Clean WaterΦ20mm PPR
Waste waterΦ50mm&Φ110mm UPVC
11Insulation test resultFloorThickness=80mm, U=0.25 W/m² K
RoofThickness=75mm, U=0.32 W/m² K
Wall panelThickness= 60mm,U=0.59 W/m² K
WindowThickness= 5/9/5mm,U=1.4 W/m² K


Supply Ability : 300 set per Month

Packaging & Delivery

Packaging:  4 sets buildings packed in a bundle shipped directly as 20ft ISO sea container, SOC

6.5 sets buildings in loose load in a 40HQ, with equipments for buildings.

Port:                  Shanghai port

Delivery time: 15 days stock, 30 days production

Installation:    At least 2 engineers to help on site or send very specific installation manual

Our Service:  Engineering-production-shipping-installation-warranty-after service support you develop your business

Sunnyda Support Your Business
Cheap demountable building
Cheap demountable building
Warehouse Demountable Building
Warehouse demountable building
Tiny House Demountable Buidling
Tiny house demountable building
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Small demountable building
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Self contained demountable building
Residential demountable building
Residential demountable building
Portable demountable building
Portable demountable building
Demountable office building
Demountable office building
Demountable site office
Demountable site office building
Dynamic demountable building
Dynamic demountable building
High profile demountable building
High profile demountable building
Commercial building demountable
Commercial building demountable

Sunnyda Demountable Buildings

Demountable building small unit is 20ft container house;the mainframe is 4mm painted and galvanized steel. If there is no extra gable or slope roof, container house itself has a self-drainage system. The floor is very flat cement board or plywood, with thick insulation material underneath while the top is heavy traffic commercial PVC floor. It features strong security steel door and double glazed glass aluminum window.

The demountable building can be packed well in a bundle and loaded in 40HQ. It carries a maximum of 6.5 units. Or 4 units in a 1 bundle shipped directly as ISO 20GP. Onlya very strong container can go this way. If quality or packing is not good, the risk of breaking up during transportation is high.

Sunnyda house sales and technical support team are online 24 hours 7 days. You can always find us for any questions and after-sales service. With 10 years’ experience in the demountable building production, we follow strict quality standards, ensuring they last for more than 15 years.

Sunnyda is your premier demountable buildings manufacturer!


Ultimate Guide to Demountable Buildings

Chapter 1: Introduction to Demountable Buildings

Pic 1- demountable buildings – setting up the house

A number of house types exist today and demountable buildings are one of them. From the name demountable, it should be easy to understand what these buildings are all about. You can simply set them up in one place and then when it is time to move you just take them apart.

The use of demountable buildings has been on the rise over the last decade or so. This is attributed to the many benefits you get as we will see later. Also, these buildings still tick the boxes when it comes to durability just like conventional buildings.

Are demountable buildings same as portable buildings? That is a question some might have when differentiating the two. When it comes to portable buildings, yes, they can be moved, but in most cases you will find that they cannot be completely dismantled as compared to demountable buildings.

Let us get to learn more about what demountable buildings are all about below.

Chapter 2: Advantages of Demountable Buildings

Pic 2- demountable buildings – completed building

2.1 Prefabricated in factory, eco-friendly

The obvious advantage is that you will receive the building already prefabricated. This means you do not have to worry about it taking up precious time you do not have. You simply have to contact us to let us know what you are looking for in a building and we will get it done.

Another thing worth noting is that all the materials used in the process are eco-friendly. We understand how important it is for buildings to be part of preserving the environment. Just because they are eco-friendly, it does not mean that the quality and durability are compromised.

2.2 Materials custom made

We also allow the option of ending up with custom made buildings. This often involves working with the client to pick the necessary materials. With the option of customizing the materials, it allows the clients to end up with a building that works great for their needs.

We have a wide range of materials, so you can always find something that works great for you.

2.3 Come with electrical and plumbing system

Just like any other conventional building, our demountable building also features the electrical and plumbing system. They are already preinstalled so setting them up should not take long. Many people would definitely appreciate having systems that work. Do not worry as our electrical and plumbing systems are set up by professionals.

2.4 Flat packing

Portable buildings can be good, but not as good as demountable buildings. This is because they do not completely dismantle. It is why you get to choose demountable buildings as they do allow for flat packing. Dismantling the building to individual components will make it easy for transportation from one site to another. Also, the trucks carrying the building will easily maneuver in traffic.

2.5 Fast delivery, 15-30 days

Working within a timeline is always important for any client. Depending on the design and complexity, it can be delivered usually within 15 to 30 days. Shipping time depends on where you are, from 10 days to 2 months. Installation time just take a couple of days. The same cannot be said for the conventional buildings which take months to build. You should have your building ready to occupy fastest even in just a month. Such a timeline should definitely work for many.

2.6 Relocated easily

The best part about owning a demountable building is relocating. The process is often smooth and easy. Just as setting up the demountable building is easy, taking it apart is still easy. Once you have dismantled it, you can now transport it to a different site and set it up again.

2.7 Can be built up to 3 floors

Depending on the design, it is possible to build up to 3 floors. This means that you get more space to work with. It could be a company building where you need more space for workers or just your home which could use more rooms.

Chapter 3: Application of demountable buildings

Pic 3 – demountable buildings- office building sample

3.1 Camp

Having demountable building at a camp can serve different functions. If you want to bring that feeling of being at home while at a camp, demountable buildings are great. Keeping in mind that staying in a tent for long might not be ideal, using these buildings will help a lot.

The demountable buildings will have lots of amenities that will lack in a tent. These buildings are ideal for those who might be at a camp for a long time. Some even have to be there for months before moving.

3.2 Medical

Demountable buildings are not just for the camp application. Someone also have those that are good for the medical field. They are designed to meet the stringent specifications of the medical world. The buildings are also designed to handle the patient needs that might arise.

Normally the client would have to contact factory for more specifications. This allows to design and build demountable buildings for the medical field. Once done, these buildings can be setup in remote areas where access to proper health care might be a challenge.

3.3 School

It is common that sometimes the school might be overwhelmed by the intake of new students. This means that the school has to set up more classrooms. Before building of permanent classrooms, the school can opt for demountable buildings first. This allows for students to keep learning uninterrupted while their new classrooms are set up.

The same goes for dormitories or any other amenities that the students might need.

The demountable buildings that we provide meet the ADA requirements, so those with disabilities would also access them. At the request of the client, we can have them fitted with specialized wiring for the computer equipment and other necessary learning aids.

3.4 Site office

If you would be working on a site just for a few months or years, no need to set up a permanent structure when demountable buildings are available. Once you are done with the site, you simply move your office to the new site. Eventually, you will find that the use of demountable buildings will save the company a lot of money.

3.5 Housing

Yes, you can have your home as a demountable building. It is worth noting that these buildings still have impressive durability. The materials that use for making them have been tested in various conditions. This allows them to be great for your home too.

Different clients will have different home needs. As a result, we always allow the client to work with our designers so as to realize a dream home they have always wanted.

The demountable buildings compared to conventional buildings are cheaper. You will always save money and put it in decorating your home even further. That is not all, we will also have your home set up in just 30 days maximum.

3.6 Security

It is amazing how you can also use the demountable buildings in the security sector. They are seen as convenient and can easily be moved if the need arises. Let us say you have a company that needs to provide security for an event. No need to set up a permanent structure. Using demountable buildings allows for having a command center for the event and move it to the next one once you are done.

The same can be used for monitoring traffic, weigh bridge and more. The beauty about demountable buildings is that they can be versatile.

Chapter 4: Service from factory for demountable buildings

Pic 4- demountable buildings – completed demountable cabin

We pride ourselves in being the best when it comes to making the best demountable buildings. For that to happen, there is a process that must be followed. Below are some of the services we offer to our clients.

4.1: R&D (research and development)

Just like any other project, research and development step is crucial. It helps in identifying the scope of the project, the overall cost, and time frame for getting it down. We work with the client at length during this step. It helps us to understand the client’s needs so that we can create the best product in the end.

4.2: Engineering & Design

This involves the company engineers who have their input on the overall structure. These are qualified engineers who we value their input. This is what leads to having a stable and durable demountable building once it is done.

Still, we have to look at the design. Just because it is a demountable building it does not mean it should be boring. The design team also works closely with the client to ensure his or her design is realized. As a client, you can bank on us giving you the best design always.

4.3: Manufacturing facilities

We have some of the advanced manufacturing facilities when it comes to demountable buildings. It is what enables us to work faster while at the same time delivering on quality products. We allow our clients to visit our manufacturing facilities so that they have the confidence that we can deliver on our promises.

We try to keep up with technology so that we remain efficient and competitive. If you want your new demountable office done faster and correctly, we are always happy to help.

4.4: Project logistics

We do not just create the buildings; we also help the client with the many other project logistics that might arise. This often involves shipping of the completed building, clearing the area, and finally setting up the building. We have a team of project managers who can come in handy in such cases. All you have to do is relax and let us help you with many other project logistics you might have to deal with.

4.5: Site installation

We would not have done our part is we do not do site installation. This is important to ensure the building is set up correctly. Our builders have been working on similar projects for long, so setting it up should not take long.

Site installation is also provided for clients who might have demountable buildings not from us. Since we understand the field, we are flexible to provide this service independently. Once we are done with the project, you will be happy to see the building working just as you would have wanted.

4.6: One-stop housing solution

Our company is a one-stop housing solution for many clients. It is not just about buying demountable buildings as we offer many other solutions. You can always check out our website to learn more about the different housing solutions we have. The best part is that we offer competitive rates for the different projects. In the end, you should get the best value for money.

4.7: Project & case studies

We are not afraid to share what we have accomplished over the years. It is why we have a dedicated project and case studies page to show our past projects. The page also highlights the current projects we are working on. This helps build the client’s confidence that we have the experience and expertise required to handle their projects.

Chapter 5: Buying Tips for Demountable Buildings

Pic 5 – demountable buildings – inside of a demountable building

5.1: Choose rich experience in Demountable Buildings manufacture and export.

You want to get the best demountable buildings from a top manufacturer. A company that has experience in making the right buildings is going to be your best bet. This is because creating such building need deep knowledge and expertise which all come with experience.

Look at the company portfolio to understand just how good it is when it comes to building these demountable buildings. The company should also have the best logistics of moving the finished building from the factory to the client.

5.2: Choose longer lifetime Demountable Buildings

You do not want to keep buying new demountable buildings every few months or years. This is where the durability comes in. Look at the materials used to make the building. All the materials are crucial for the durability. You should end up have a great house that lasts for longer if the materials are good. Make sure you understand the materials before paying for the projects.

5.3: Choose no rust steel frame

As part of making sure you end up with a good building, the no rust steel frame is important. It is good for durability, strength, and stability. We will provide with the necessary materials such as no rust steel frame to help you end up with a quality demountable house.

5.4: Choose good quality for house part and equipment

The house parts and additional equipment should also be from top brands. This is what you will use for furnishing the building. If the equipment is not up to standard, then you will have problems in future. If we do not manufacture some of the equipment, we will recommend to you the best brands to get.

5.5: Choose supplier can do good water collection system

The water system is crucial to any building. It will help a lot with making sure you never have to worry about leaks. Leaks are the worst when it comes to the water system. Sometimes it can lead to damaging the house. As a result, we take our time to design and build the right water system for the house. You should end up with a highly functional system.

5.6: Choose short lead time manufacturer.

We understand the importance of having the project done in time. It is why we have a short lead time. You always have to keep in mind how a delayed project will affect you. The manufacturer should have case studies showing that the company can actually deliver on time. For us, we do deliver from 15 to 30 days depending on the project complexity.

5.7: Choose good service manufacturer

How you get treated by a manufacturer often determines if you will work with them anytime soon. For us, we make sure you get the best service. That is how you also get good value for your money. We allow the client to engage us in every step of the project. As a result, you will end up with a demountable house that is to your liking.


From the guide above, you can see why owning demountable buildings is a great decision. Mostly, the conventional houses are expensive and might not be ideal for all situations. You can always opt for our demountable buildings as they are built to last and will offer value for money. Also, we allow the client to be part of the design process so as to get the building that he or she wants. We also pride ourselves in providing quality service to keep the clients coming back for more.

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