My experience of moving away from working for my uncle into independent “swimming” turned out to be a failure, although it brought a lot of knowledge. There were monetary losses, but not to say that they affected my well-being too much. It all started with the fact that she got a job in a company for the construction of residential buildings from SIP panels as a sales manager. After working for about six months at this place, I decided that I had generally understood the specifics of the business, realized that it was not something very complicated, and decided to try on my own, following the example of my employer, to launch a similar project using the same sales channels.
My departure from the organization was synchronized in time with the refusal of one client, with whom we had an agreement that my new company would build his house. For this I promised him a discount.
LLC registration
Since the cost of registering an LLC was not so expensive - about 15,000 rubles, I decided not to save money, but to order this service from a third-party company. They also have to keep accounting records in the future.
The OKVED codes that I chose for the functioning of the organization are 20.30.2, 45.25.3, 45.42, 45.21, 45.21.7 and others.
Office rental for a young company
I rented an office space of 25 sq.m. in the central area of the city at a price of 16,000 rubles / month. The landlord provided us with a telephone, Internet access, a table and two chairs. For clients coming to the office, I decided to purchase a representative sofa and coffee table.
Sales channels
The site that I took as a sample when creating my own resource. To be honest, I had no idea that the cost per click in this topic is so high. In total, for the first month of work, it took me about 20,000 rubles for contextual advertising in Yandex.
An incomplete list of keywords for which I launched Direct:
- house sip panel turnkey price
- turnkey frame house from sip panels
- houses + from sip panels turnkey projects
- houses + from turnkey sip panels inexpensively
- construction of houses + turnkey sip panels
- build a house + turnkey sip panels
- houses + turnkey sip panels prices
- build a house + from sip panels
- single storey sip panel house
- sip panels house cost
- country houses + from sip panels
- cottage + from sip panels price
- construction of cottages + from sip panels
- projects of cottages + from sip panels + with a garage
- cottage + turnkey sip panels price
There were few responses: 2 applications through an online consultant and 5 calls. Of all the responses, only one came from a really interested potential client. He planned to build a cottage of 100 sq.m., however, in order to start work, he needed to sell his property, and this delayed the receipt of the advance payment indefinitely. Thus, in the first month, no money was received from the launch of the advertising company. We went negative. I had many competitors, some of whom had been in the market for years, had big social media groups and financial airbags.
In fact, for several months of the existence of the construction site, I had the only client for whom we built a two-story cottage with an area of 200 sq.m. on his land near the city.
Purchase of sip panels
I bought building materials from a St. Petersburg manufacturer and delivered them to my city with the help of transport companies. I included logistics costs in the price of the house.
I took a 40% advance from the client, for which building materials were purchased, and the work of the builders was paid.
Projects of cottages from SIP panels
Standard designs of cottages were provided by the panel manufacturer. These were houses and dachas ranging from 20 to 400 sq.m.
The most demanded in my practice (both as a sales manager and as an entrepreneur) were projects of houses with an area of 100 - 200 sq.m. mostly double storey. Also in good demand are small country houses, costing up to 300,000 rubles.
Construction of cottages
For the erection of structures, I used the services of a hired team of three people. I knew the foreman from my previous place of work. According to our agreement, this person was responsible for compliance with the construction technology - a kind of architectural supervision, monitored the quality of materials from the supplier. He went to the site as needed, several times a month.
He was not responsible for the exit of employees to work - I was supposed to deal with these problems. I paid him 50,000 rubles for his services after the completion of the project. Construction period - 2 months.
However, even a good acquaintance did not allow avoiding the difficulties associated with the organization of construction and installation work on the site.
Problems I Faced Starting a Business
Problem number 1. Physical workers.
A week later, one of the employees did not come to work. After the call, he promised to come the next day, citing poor health. That day he went to work, but in the future he constantly arranged for himself “weekends”.
Stepping back a little, I’ll say that workers who are not officially employed or registered under a GPC agreement do their best to combine work at several sites at the same time. Because of this, they often do not go to work and the deadline for the construction of the facility is disrupted. However, they may not go out for various reasons, including in connection with bad habits against which they are powerless to fight.
Foreign workers are no better in this regard either. Guest workers may one day, without informing you, leave the construction site in an organized manner, without explaining the reasons. Yes, you will not pay them wages, but you yourself will suffer from the failure to meet deadlines and the hassle associated with finding new builders.
You can try to insure against employee absenteeism with the help of GPC agreements and the severe penalties prescribed in them, however, this will not be a guarantee of peace of mind for you: a specific feature of the working staff is its optionality.
Problem number 2. Workers again. Technology failure.
In order to be sure of the quality of construction and installation work, you need to be at the construction site around the clock and observe the construction process. If this does not happen, it is possible to say with almost 99% certainty that hired employees will “screw up” somewhere. This may be the wrong choice of location for the pile field, poor-quality twisting of the piles, poor foaming of the joints, the use of raw drywall, etc.
Working with a client
Our client did not trust us. He worked much longer than us in the construction industry and was savvy in many matters. In fact, he himself supervised the process of building a cottage and registered the flaws, which we then corrected. As a result, I did not earn anything by spending on
The final review of my 4-month entrepreneurial activity in the construction of houses from SIP panels:
Acquisitions:
– construction of one house with an area of 200 sq.m.
Losses:
- 300,000 rubles;
- Broken relationship with the client.
Ekaterina Silnikova, entrepreneur.
The technology of SIP panels is known to everyone who is at least a little connected with construction. The high popularity of frame-panel houses would have been even greater if not for their cost. In private construction, this issue is easily solved, because you can make sip panels with your own hands in a small workshop or garage. Thus, if you have a desire to build a structure, you can reduce the cost of it to a minimum.
The structure of SIP panels
SIP panels are a composite building material. They have 3 layers:
- insulation (inner layer);
- OSB boards (outer layers on both sides).
insulation
Expanded polystyrene is used as a heater. This is a lightweight, durable material that does not deform for a long time. Its advantages are the absence of hygroscopicity, it does not get wet. In addition, mice do not like polystyrene foam, they do not build nests in it.
In the absence of hygroscopicity of this insulation, you can also see the disadvantages, because it requires compliance with high-quality ventilation of the walls. Here it is enough to observe the technology of erection and insulation of hinged facades.
OSB
The outer layer of the panels on both sides are oriented strand boards. They consist of sawdust bonded into a durable board with a special resinous composition. At this point, many people see disadvantages, since the composition of the resin is almost always not known. That is why it is better to buy OSB from well-known manufacturers. So the chances of acquiring environmentally friendly material increase many times over.
To assemble SIP panels, you will need the following equipment:
- table;
- press;
- glue, for example, Kleiberit;
- expanded polystyrene grades S-25-35;
- OSB boards 12 mm thick;
Manufacturing of SIP panels
OSB is placed on the table and covered with glue. The Kleiberite mentioned above is used according to the following technology. It is applied to the OSB surface with a notched trowel, brush or a special adhesive roller. It should be borne in mind that such application is due to the fact that it is necessary to create not a continuous layer of glue, but with grooves. The average consumption is 150±50 g/m2.
Next, the composition is kept on the surface for 8 ± 2 minutes, a sheet of expanded polystyrene of appropriate sizes is laid on it. The next layer of glue is applied to the insulation. Withstand the same amount of time (if Kleiberit is used) and lay on top of the OSB. Next, the finished structure is placed under a special press.
Drying finished panels without a press
If there is no press, you can do this: each new SIP panel is assembled directly on the previous one. When a stack of 5 pieces is formed, it is covered with an awning fabric, which is hermetically glued with quick-setting glue. For example, you can take the one-component composition Cosmofen.
Further, air is pumped out from under the tent with a vacuum pump to create high pressure. Leave to dry for 1 hour. Then remove the fabric and wait another 1 day. After that, the panels can be used for construction.
You should know that SIP panels are interconnected using a bar. It should be on one vertical side of each panel. Thus, the frame of the house is created and rigid fastening is provided. The advantages of such a connection: strength, lack of cold bridges.
SIP panel dimensions
The following dimensions of finished SIP panels (mm) are considered optimal:
- 2800x1250;
- 2500x1250;
Manufacturers adhere to these sizes. With your own hands, you can create plates of any size. However, they must comply with the construction project. If the slabs are smaller, the following construction disadvantages may appear in winter: a large number of butt joints will lead to heat being removed to the outside.
Optimal thickness of each layer
Also take into account not only the dimensions, but also the thickness of each layer. OSB is chosen with a thickness of 12 mm, and the insulation depends on the purpose of use:
- for facade walls, polystyrene foam is taken with a thickness of 200 mm;
- for internal partitions, it is enough to take expanded polystyrene with a thickness of 100 mm, 140 mm.
For the construction of a residential building, it is better to take OSB-3. In them, chip gluing differs in direction in the outer and inner layers: longitudinal and transverse. You should know that such an arrangement of chips provides high strength, long service life of the material.
Shield house: pros and cons
Are there any disadvantages of self-manufacturing SIP panels? If you break the technology, you will not get the expected result. The house can become too energy intensive. If the materials of the layers are correctly selected and the drying rules are observed, you will be able to build a high-quality structure with your own hands. This will reduce the cost of time and money.
The panel house is characterized by rapid construction and low weight. It doesn't have to be a heavy foundation. It is enough to build columnar reinforced concrete or from screw piles, taking into account the characteristics of the soil.
The practice of using SIP (Structural Insulated Panel) panels as the main building material is not only widespread in Western and foreign countries, but at the same time is rapidly developing and is widely used in our country.
Why choose SIP panels?
The composition of the sip panel
The panels are special structures made of a wooden bar and two oriented strand boards (OSB) attached to it, the internal space between which is filled with expanded polystyrene. The resulting layers are glued together with a one-component adhesive based on polyurethane.
The plates are assembled in such a way that it is easy to use the tongue-and-groove system.
, erected using this kind of panels, are primarily distinguished by their low specific gravity, thereby significantly reducing the load on ground soils and the requirements for the foundation, respectively. In addition, significant, erected using this technology, is the highest level of strength and reliability. Thus, the panels are able to withstand a load in the vertical direction of up to 10 tons, and in the transverse direction - up to 2 tons throughout the entire operational period, which exceeds 80 years. In addition, in the shortest possible time, in general, not exceeding a 3-month period.
Excellent sound and heat insulation characteristics, complete fire safety and an absolute level of environmental friendliness - all these qualities determine the success of SIP panels.
In addition, SIP panels, with proper observance of technology and the use of proven materials, can be produced by hand at home, further reducing their cost.
Tools and materials used in the production process of SIP panels
Sip panel insulation The following materials and equipment are used in the process of manufacturing sandwich panels:
- Oriented strand board OSB-3;
- Expanded polystyrene or other insulation;
- Wooden beam;
- Single component polyurethane based adhesive. Oriented strand boards (OSB) are panels with a thickness of 10-12 mm and are the result of pressing wood chips with a length of no more than 1.5 cm and a diameter of at least 0.6 mm under high temperature using specialized resins. Chips are usually laid in 3 layers perpendicular to each other. Such material is easily sawn, drilled and holds any fastening material.
- universal insulating raw material, consisting of foamed polystyrene. In the process of manufacturing sandwich panels, expanded polystyrene grades C-25-35 are usually used. This material is 95% carbon dioxide and is distinguished not only by its low weight, but also by its low cost compared to other heaters.
As an adhesive, such compounds are used as, for example, Kleiberit 502.8, top-ur 15, Macroplast UR 7228 and Macroplast UR 7229. Special requirements are imposed on such compounds: an increased level of moisture resistance, a wide temperature range (from -40 to +50 degrees Celsius). Celsius), possessing absolute environmental friendliness and correspond to the long service life of the panel.
The working surface should be a table larger than the OSB-3 sheet in size, and both a special sprayer and a device made of a canister and a rubber spatula with teeth can be used as a means of applying the adhesive.
In addition, you will need a machine for pressing sandwich panels. The press will cope with this task or, if there is none, a powerful vacuum pump is used, with the help of which the desired result is achieved.
For the manufacture of panels, you also need a thermal knife or a thermal cutter. This device is a heating element heated from the network on the handle, it is necessary for melting the insulation. Using a knife, SIP panels are cut into pieces.
Production of SIP panels
Vacuum press for SIP panels How to make a sip panel? The OSB-3 sheet is laid on a flat work surface (special table), and glue is applied to it using a sprayer, glue, brush, roller, spatula with teeth or any other device. As a rule, the consumption of adhesive composition is 150-200 gr. for each sq.m, but, in turn, it strongly depends on the method of application. The composition is aged for 8-10 minutes, after which expanded polystyrene grades C-25-35 are placed.
In the process of making sandwich panels with your own hands, the speed of the actions performed plays a special role. Do not allow the adhesive to cure between layers. Otherwise, the resulting structure will be characterized by a low level of strength and reliability; such a panel cannot be used in further construction.
The laid sheet of expanded polystyrene is carefully leveled, a uniform layer of adhesive is applied to it. On top of the insulation, the next layer is laid, consisting of an OSB panel. Next, the second plate is formed according to the above algorithm.
It is necessary to assemble the panels at least 5, and you should also take care of the need to put pressure on them. For this purpose, a vacuum pressing technique is used. A pre-aligned stack of panels is covered with an awning fabric cover glued together with a special adhesive, for example, Cosmofen SA-12. Having previously clamped the edges or ensured the proper level of tightness using any other method, air is pumped out from under the cover. Look at the photo above, in it the panels are under a vacuum press.
Thus, a significant pressure of the order of 1 ton per square meter is exerted on the panel. The holding time under vacuum is 40-60 minutes, after which you can start producing the next “stack” of panels.
For 8 hours of continuous work, about 25-35 sandwich panels can be glued together. It is worth noting that already finished plates must remain in a horizontal position for at least a day in order to finally acquire the expected performance.
Compliance with safety regulations in production
Applying glue to the base for gluing insulation As in any production process, safety in the production of sandwich panels plays an important and far from the last role. So, all work should be carried out in a spacious, well-lit and ventilated room. All work with sandwich panels is carried out in special clothes with long sleeves, hands are protected with gloves, eyes, if necessary, goggles.
How profitable is manual production of panels?
Manual production implies the following items of expenditure:
- Glue;
- OSB-3 sheets;
- Styrofoam;
- Vacuum pump for pumping air;
So, using the example of 100 panels, we need:
200 sheets of OSB-3 for 500 rubles. each - 100 thousand rubles;
from the consumption of 2 kg. glue (average price per kg. 150 rubles) per sheet - about 40 thousand rubles;
vacuum pump - 15 thousand rubles;
expanded polystyrene from the consumption of 0.5 cubic meters. m. per panel - 90 thousand rubles. Compared to industrial panels, manual production saves at least 100 thousand rubles, which is important in the current conditions. The cost of the plate is 1300 rubles per square meter. In general, the price depends on the thickness of the plate.
Finished panels are cured after production Video
Watch a video on how to make a sandwich panel with your own hands:
The construction of houses from SIP panels in Western Europe and far abroad is a fairly common technology. And the pace of construction of buildings from SIP panels in our country is constantly increasing. This technology is popular due to the speed of building a house with high performance. Many private developers choose frame housing technology because of its simplicity and the possibility of self-construction of a dwelling. But if the frame can be built with your own hands, then the panels are finished factory products. In this regard, the question arises of how to make a SIP panel with your own hands, so that when you build a house on your own, you have all the building materials for a frame structure.
Benefits of SIP panels
The design of the panels includes the following details:
- frame made of wooden beams;
- On both sides, the whole structure is closed with oriented strand boards, which are glued with a one-component adhesive based on polyurethane.
All plates are made in such a way that they are hermetically connected to each other due to the presence of a tongue and groove lock. A house made from these panels, and the slabs themselves, have the following advantages:
- Due to the small specific gravity of the material, the entire building is quite light, so a light, shallow foundation can be built under such a house. As a result, you can save on materials, volumes of earthworks and reduce construction time.
- Structures built using frame-panel technology are distinguished by their strength and reliability.
- Panels can withstand significant loads. In the vertical direction, these loads can reach up to 10 tons, and in the horizontal direction, the structure can easily withstand a load of 2 tons. Moreover, these strength characteristics of the elements do not decrease throughout the entire service life.
- The service life of a house made of this material is 80 years.
- Construction speed. It usually takes up to 3 months to build a small private house.
- The material has excellent heat and sound insulation characteristics.
- The panels are fireproof.
- These products are environmentally friendly and completely harmless to humans.
- The manufacturing technology of SIP panels is so simple and affordable that such products can be made by yourself. As a result, you can significantly save on materials for building a house.
Important: self-production of high-quality SIP plates is possible only with strict adherence to the assembly technology.
Materials and tools used for production
To make SIP panels with your own hands, you will need the following materials:
- OSB-3 is oriented strand board;
- timber (it will be needed for the construction of the frame of the house, and not for the manufacture of wall slabs);
- one-component adhesive composition based on polyurethane;
- expanded polystyrene or any other heat-insulating material.
Attention: it is recommended to use extruded polystyrene foam for insulation of boards due to its high efficiency. Choosing other materials with lower thermal insulation qualities, you will have to increase the thickness of the insulation, and consequently, the thickness of the panels themselves.
OSB-3 is a slab with a thickness of 1-1.2 cm. They are made in the process of pressing chips, the dimensions of which do not exceed 1.5 cm in length and 0.6 mm in diameter. The material is mixed with special resins and pressed under high temperatures. The chips are pressed in several layers, while the direction of the fibers in all layers is directly perpendicular to each other. OSB is easy to process, any fasteners are securely fixed in them.
For the manufacture of sandwich panels, it is better to use expanded polystyrene grade C-25-35. This material is made from expanded polystyrene. It contains 95% carbon dioxide. The specific gravity of this material is small, and the cost is quite acceptable.
To build your home from your own sandwich boards, you will need one of the following adhesives:
- Top ur modifications 15;
- Clayberite brand 502.8;
- Macroplast series UR 7228;
- Macroplast series UR 7229.
The following requirements are imposed on the adhesive compositions used:
- They must have a sufficient degree of moisture resistance.
- The adhesive can be used in the temperature range from -40°С to +50°С.
- Equally important is the safety and non-toxicity of the adhesive used for humans and the environment.
- The adhesive connection must be quite reliable and durable in order to correspond to the declared life of the house.
In addition, you will need the following tools:
- For the manufacture of panels, it is better to prepare a work surface, for example, a table, the dimensions of which are slightly larger than the dimensions of a single oriented strand sheet.
- To apply the adhesive, you can use a sprayer, brush or notched trowel.
- The most important equipment is the plate pressing machine. Instead, you can use a conventional press or powerful vacuum pumping equipment.
- You will also need a thermal cutter or hot knife. These products have a special heating element, which is heated from the electrical network. The product will be needed for cutting heat-insulating material into separate parts.
Benefits of making your own panels
As you can see, for self-manufacturing of SIP boards, you will need not so many materials and tools. Your biggest expenses will be from the purchase of glue, insulation, OSB, vacuum pump or press. As a result, you will get an insulated, warm and durable home at an affordable price.
- 1500 USD you will spend on the purchase of 200 sheets of OSB-3, each of which costs 7.5 USD;
- $630 for glue at the rate of 2 kg of adhesive composition per sheet (the cost of 1 kg of glue is 2.3 USD);
- 1400 USD on heat-insulating material, while one panel will need 0.5 m³ of insulation.
The cost of one panel will be 20.5 USD/m². The price may vary slightly depending on the thickness of the product, but in general you will get a savings of 1500 USD.
Manufacturing technology
If you want to make wall slabs for a frame house yourself, then you should follow the following sequence of actions:
- OSB is laid on the work surface. Using any tool for applying glue, it is smeared with adhesive over the entire plane. As a rule, the consumption of glue depends on the method of application, but on average, it takes from 150 to 200 grams per square meter. glue.
- After 8-10 minutes, a sheet of expanded polystyrene is laid on the applied glue.
Attention: in order to prevent the glue from hardening, it is worth adhering to a certain speed of operations when making SIP panels on your own.
- After leveling the expanded polystyrene sheet, an adhesive composition is applied to it.
- Then, without waiting for the glue to harden, the second layer of OSB is laid.
- Five more panels are made in a similar way, since it is better to subject several products to the pressing process at once.
- All prepared panels are stacked one on top of the other. They are covered with a cover made of dense awning material. The cover can be made independently by gluing material blanks using Cosmofen glue of the CA-12 series.
- Next, the open edge of the cover must be tightly wrapped, fastened or sealed in another way. After that, air is pumped out of the case. Due to this, a pressure of about 1 t / m² is applied to the products.
- The panels must be kept under vacuum for 40-60 minutes. After that, you can start making the next batch.
- Finished products must lie in a horizontal position for at least 24 hours. During this time, they will gain the necessary performance characteristics.
Important: if the work is carried out continuously, then in 8 hours you can independently produce 25-35 wall products for a frame house.
Safety
So that your health is not affected during the production of plates, you need to observe the following safety rules:
- It is worth using personal protective equipment. So, you will need long-sleeved clothing, special goggles and hand gloves.
- If the ventilation of the room is insufficient, then it is additionally worth using a respirator. So, you do not have to inhale the evaporating adhesive composition.
Making SIP panels with a do-it-yourself press - video:
