Table of contents:

Making Metal Doors With Your Own Hands: Technology, Drawings, Equipment, As Well As How To Make Heat And Noise Insulation Correctly
Making Metal Doors With Your Own Hands: Technology, Drawings, Equipment, As Well As How To Make Heat And Noise Insulation Correctly

Do-it-yourself metal doors: how and with what you can do

Metal door manufacturing
Metal door manufacturing

Among other types of doors, metal ones are distinguished by their strength and reliability. They are installed at the entrance to a house or staircase, where increased protection is needed. With the help of simple tools and equipment, each person will assemble a metal door in one day. This also requires certain materials and knowledge.


  • 1 Is it possible to make metal doors with your own hands
  • 2 Manufacturing technology of metal doors

    2.1 Drawings for making a metal door with your own hands

  • 3 Equipment and materials for making metal doors with your own hands

    • 3.1 Step-by-step instructions for assembling a metal door

      3.1.1 Video: how to cook loops

  • 4 Thermal insulation of a metal door

    • 4.1 Styrofoam

      4.1.1 Video: insulating a garage door with foam

    • 4.2 Mineral wool

      4.2.1 Video: thermal insulation of a metal door with mineral wool

    • 4.3 Polyurethane, or inflatable insulation
    • 4.4 Stages of installing insulation on the door leaf

      4.4.1 Video: how to insulate a metal door with foam

    • 4.5 Insulation of the door frame

      4.5.1 Video: insulation of the door frame with mineral wool

  • 5 Soundproofing metal doors

    • 5.1 Outer cover
    • 5.2 Installing the seal
  • 6 Finishing metal doors

    6.1 Video: interior decoration of a metal door

  • 7 Reviews

Is it possible to make metal doors with your own hands

Reliable metal doors have long won the sympathy of consumers. They are used wherever additional protection is needed: in houses, garages, apartments, warehouses. According to the demand, the supply market has also grown; a great variety of ready-made steel doors can be found on the pages of newspapers and Internet resources.

Steel doors
Steel doors

There are various types of metal doors on the market

However, many craftsmen prefer home-made doors to purchased products. Their advantages are lower financial costs and an independent choice of design and materials. These factors make it possible to assemble a door of any shape, including non-standard options, and also give confidence in the quality of the finished product.

Hacking the door with a can opener
Hacking the door with a can opener

Thin steel frontal surface of finished metal doors is cut without much effort

Self-assembly of a metal door requires not only special equipment, but also certain skills. This is especially true for welding joints. To apply a seam of the desired quality, you need skill and a certain skill. The cost in comparison with the factory door will be 30-35% lower, but the quality may be higher.

Metal door manufacturing technology

When making doors from metal, the main emphasis is on reliability. This factor depends on:

  • door leaf and frame structures;
  • materials used;
  • installation quality.

Reliability also means the strength and durability of the doors. Additional devices - closers and electronic eyes - make the operation of the structure more comfortable.

Accessories for metal doors
Accessories for metal doors

Varieties of door hinges and locking devices allow you to choose the right components depending on the specific situation

All these innovations are used for the self-made door. First of all, when drawing up a project, it is important to think over in detail all the elements that make up the future design and select the necessary materials. In this case, it is necessary to take into account the technological sequence, the order of assembly, installation and finishing of the door block.

Drawings for making a metal door with your own hands

To create a working drawing, you need to make measurements of the doorway. The sketch is applied to the paper at the selected scale. Using a tape measure, the width, height and depth of the opening are measured.

Doorway measurements
Doorway measurements

Doorway parameters: W-width, H-height, T-depth

There is a specific standard for metal doors. It is undesirable to make the dimensions of the door leaf more than 200x90 cm. This is due to the fact that the weight of the structure increases and, accordingly, the requirements for the quality (or quantity) of hinges increase. If the doorway is larger, it is more advisable to install an additional top or side unit. The upper block is often equipped with glass inserts for additional lighting. Side can be hinged or deaf.

Working drawing
Working drawing

The drawing should reflect in detail the design features of the door

All these nuances are reflected in the drawing. It is customary to lay the box dimensions taking into account the mounting gap, which allows the structure to be positioned in the horizontal axis. It is subsequently filled with foam. To adjust the position of the door and eliminate distortions, a gap of 2.5–3 cm is sufficient.

To evenly distribute the weight of the door leaf on the frame, 2 to 4 hinges are used. Canopies can be of indoor or outdoor design. External loops are often used. The distance from the edge of the door leaf to the hinges above and below is 15–20 cm. If the door is heavy and there is a need for additional suspension, one or two auxiliary hinges are mounted between the main hinges. The exact location of the canopies, taking into account their own dimensions, is noted on the drawing.

Metal door hinges
Metal door hinges

The support ball inside the sleeve softens the working stroke of the hinges

Any door is equipped with stiffening ribs. They are metal corners or quadrangular pipes located along, across or diagonally of the canvas. When placing them, two factors are taken into account:

  • the location of the lock and the door handle (for ease of installation, the stiffeners do not intersect with the location of the locks);
  • the way of insulating the door (since the heat-insulating material is attached in the recesses between the ribs).
Stiffening ribs in a metal door
Stiffening ribs in a metal door

Insulation is located between the stiffening ribs of the door

In the drawing, you need to display the outer finish of the door and the necessary structural units. For example, if one of the sides is planned to be sheathed with clapboard, wooden bars are laid inside the canvas, to which the cladding is subsequently attached. If the sash is covered with paint or laminated film, there is no need to install the bars, but more attention is paid to the plane of the canvas. The surface is carefully sanded, metal drips formed during welding are eliminated.

DIY equipment and materials for making metal doors

After the working sketches are completed, you need to prepare tools and materials. Here is a basic list of equipment:

  1. Electric drill with a set of metal drills. The angle of sharpening of the drill should be 110–130 o, tool steel, high strength, hardened. It is convenient to use a core to make a hole.


    Using a core tool and a hammer, a metal drilling point is prepared

  2. Screwdrivers or screwdriver with a set of necessary bits, including Phillips and flat slots.
  3. Welding machine, preferably invector type. Electrodes with a rod thickness of at least 2 mm.

    Invector welding machine
    Invector welding machine

    The power of the welding machine must match the thickness of the door metal

  4. Angle grinder (grinder) and cutting discs. You also need one roughing disc to remove metal build-up.
  5. Vices and clamps for fixing structural elements during assembly. The solution of the working planes of the tool is selected based on the dimensions of the workpieces.


    The clamp reliably holds the workpiece while working with it

  6. Metal files with fine structure.
  7. Workbench or goats.

    Locksmith workbench
    Locksmith workbench

    Locksmith's workbench simplifies and speeds up the assembly of a metal door

  8. Roulette, square, marker (or crayon) and other measuring instruments.

    Locksmith tools set
    Locksmith tools set

    A variety of tools speeds up the assembly process

  9. Hydraulic level or laser level.

In terms of materials, the set will differ depending on the door design. Here is a list for a standard item:

  1. Steel (frontal) sheet 1x2 m in size. Thickness from 1.5 to 3 mm. Cold rolled steel is preferred as its strength is higher.
  2. Metal corner, 35x35 mm in size in the amount of 6 running meters. Other options are possible depending on the dimensions and device of the door frame.

    Metal corner
    Metal corner

    The corner takes on the main load and does not allow the door leaf to deform

  3. A profile pipe with a rectangular section of 50x25 mm - 9 m. If the door is intended for a utility room, use fittings that are welded to the canvas from the inside. At the same time, the step of the stiffeners is reduced, the crossbeams are placed more often.

    Rectangular pipe
    Rectangular pipe

    The size of the pipe should correspond to the thickness of the door leaf and insulation

  4. Metal plates (thickness 2-3 mm and cross-section 400x40 mm) - 4 pcs. (for attaching the door frame to the walls of the opening).
  5. Hinges - from 2 to 4 pcs. In "advanced" models, ball bearings are inserted.

    Door hinges with bearing
    Door hinges with bearing

    Bearings make the hinges lighter and longer

  6. Anchor bolts, diameter from 10 to 12 mm.
  7. Polyurethane foam with a low coefficient of expansion, quick-setting.

    Polyurethane foam
    Polyurethane foam

    A special gun is used for directed foam injection into the gaps

  8. Primer, anti-corrosion coating. Automotive primer has proven itself well.
  9. Door furniture. Padded lock, handle, peephole, door closer (the last two elements are optional). Locks are selected according to the function of the door. Sometimes, to increase the reliability, transom structures with three-sided web fixing are installed. Installing them is more difficult, but breaking such a door is much more difficult.

    Bolt lock in a metal door
    Bolt lock in a metal door

    Crossbar lock fixes the door leaf from three sides

Step-by-step instructions for assembling a metal door

It is advisable to adhere to the following sequence of work:

  1. Metal corners are cut to the specified dimensions. The blanks are laid out on a workbench in a rectangle in the shape of a door frame. Control is carried out with a bench square and a tape measure. All parts of the structure must be perpendicular to each other. The lengths of the diagonals may differ by no more than 1.5–2 mm. The permissible error in frame height is 2 mm. Joining the corners between them is recommended at 45 to.

    Worker assembles metal door frame
    Worker assembles metal door frame

    Plates are immediately welded to the frame, which will attach it to the wall

  2. A composite structure is welded. First, tacks are placed in all corners. The last measurements are taken. If all dimensions correspond to the working drawing, the box is finally welded. For convenience, clamps are used. Corner seams are processed with a grinder.

    Ready-made composite structure
    Ready-made composite structure

    Welding work should be done in a well ventilated area or outdoors

  3. When the door frame is ready, the exact dimensions of the door leaf are measured (starting not from the drawing, but from the specific dimensions of the frame). 10 mm are subtracted from all sides. For the manufacture of the sash, a corner is cut, a longitudinal hole is made in the place where the lock is installed. The grinding disc on the grinder is replaced with a cutting disc of the desired thickness.
  4. Wooden slats are placed inside the metal profile. With their help, future door finishing works are simplified.
  5. In order to weld the hinges, the frame of the door leaf is inserted into the corners of the frame. The location of the awnings must be accurately measured and secured with clamps.

    Fixed hinge of a metal door
    Fixed hinge of a metal door

    Before fixing the hinges, you need to mount the frame of the door leaf

  6. The rest of the leaf profiles are installed if the frame of the door leaf is congruent with the frame (minus the technological gaps) and the hinges are operating in the required mode.
  7. A prepared metal sheet is welded onto the canvas frame. It is cut to size in such a way that there is 1 cm on each side of the latch, and 1.5 cm from the side of the lock. Before welding, fitting is carried out by placing a plate on the frame. If the calculated dimensions are maintained, the structure is turned over and the connections are sequentially welded.

    Front plate installation
    Front plate installation

    The metal sheet is welded to the frame from the inside

  8. First of all, part of the sheet is attached at the hinges (from the inside). Then the canvas is scalded around the entire perimeter.
  9. The porch is being mounted. For this, a false strip is attached to the inside of the sash with two seams.

    Installation of the vestibule
    Installation of the vestibule

    The rebate ensures the security of the door

  10. Stiffening ribs, consisting of shaped pipes, are installed and fixed on the inner plane of the canvas.
  11. "Forging" and cleaning of the seams from slag is carried out. The reliability of welded joints is checked. All irregularities must be smoothed out. After that, the structure is covered with an anti-corrosion primer. Drying time is 24 hours.

    Cleaning seams
    Cleaning seams

    Seams are sanded with an angle grinder and a file

  12. The lock, the striker is installed, then the door handle and the rest of the auxiliary fittings. When installing accessories, it is recommended to follow the instructions in the accompanying product documents.
  13. Insulation, sound insulation, decor of the outer and inner surfaces of the door leaf are carried out.

A metal door is a means to secure housing, therefore it is reasonable to observe precautions when manufacturing it. Grinder, hammer drill, welding - these useful tools, if handled carelessly, become dangerous to human health and life. The use of personal protective equipment - a respirator, a welder's mask, gloves, etc. - is a natural standard of work, it is unwise to forget about it. In addition, a fire extinguisher and a bucket of sand are required in the welding area.

Video: how to cook loops

Thermal insulation of a metal door

During the cold period, icing, water droplets or frost sometimes appears on metal doors. This suggests that the structure is freezing. Warm air inside the room enters the metal surface and cools rapidly. As a result, condensation forms, which either flows down or freezes and turns into ice. To prevent this from happening, the door leaf is insulated. Previously, a synthetic winterizer or dermantin was used, but this did not bring effective results. Today the arsenal of heaters includes:

  • Styrofoam;
  • mineral and basalt wool;
  • polyurethane.


It is considered a very good insulation, because it contains 98% of air, "sealed" in plastic bubbles. The advantages include ease of installation, low price and absolute resistance to corrosion. Most of the doors of industrial production are completed with foam or its modification - penoplex. In addition to thermal insulation properties, the material has good sound absorption. The disadvantages include fusibility and the release of a large amount of toxic gases during combustion and heating. Therefore, it is not recommended for installation directly in residential premises. The ideal location is the entrance doors of garages, warehouses, multi-storey buildings.

Foam insulated door
Foam insulated door

Styrofoam reduces the thermal conductivity of metal doors in garages and utility rooms

Video: insulating a garage door with foam

Mineral wool

This category includes basalt and glass wool. They differ in raw materials - basalt is made from rocks, and glass wool - from sand and glass, stretched into thin long fibers. There is no noticeable difference in thermal insulation properties, but glass wool is more environmentally friendly. Both materials are characterized by high fire safety and ease of installation.

Mineral wool
Mineral wool

Mineral insulation is produced both in the form of mats and in the form of rolls of various thicknesses

A significant disadvantage of mineral wool for insulating a metal door is hygroscopicity. The fact is that with a large difference in air temperatures from both sides of the door, the dew point shifts into the inner space of the canvas. This leads to the fact that the condensed excess moisture is immediately absorbed by the fibers. Over time, water accumulates and the thermal insulation performance decreases to 80%. This scenario can be avoided by using an additional vapor barrier film, which is attached over the entire sash area. The hydro-barrier neutralizes the effect of moisture accumulation, but there is no full guarantee. It is for this reason that mineral wool insulation is recommended for doors that are not subject to significant temperature differences. For example, at the entrance to the apartment.

Video: insulation of a metal door with mineral wool

Polyurethane, or inflatable insulation

Quite expensive but effective technology. The inner cavity of the door leaf is filled with polyurethane foam. Cured polyurethane is a synthetic substance that does not corrode and is an excellent thermal insulator. The difficulty lies in the fact that for inflation, special industrial equipment is needed that combines a diffuser and a compressor. But it is too expensive to use foam from household spray cans.

Polyurethane foam doors
Polyurethane foam doors

Polyurethane coating is not afraid of water, it is a hard sealed layer

Regardless of the material chosen, preparation for insulation consists in planning the locations of the stiffeners. Experts recommend placing them in such a way that the insulation is securely held inside the sash without additional fastening. That is, the crossbeams are placed not only vertically or horizontally, but they are also combined so that the insulation does not sag over time.

Metal door with mineral wool
Metal door with mineral wool

Cotton wool fits tightly between the ribs inside the door leaf

Stages of installing insulation on the door leaf

Experts advise to lay insulation in doors that are in a horizontal position - on a table or trestle. The key to successful thermal insulation is the thoroughness of laying the entire plane, minimizing gaps. The process is performed before stitching the inner side of the canvas:

  1. The dimensions of the frame cell are measured.
  2. Blanks are cut from the insulation with an error of maximum 2 mm (upward).
  3. The material fits into the sash:

    • if polystyrene is used as a heater, several points (4–5) of liquid nails are applied to the surface of the workpiece, the resulting cracks are leveled with polyurethane foam;
    • when insulating with mineral wool, a waterproofing film is preliminarily laid over the entire area of ​​the door, and with a release (stock), then the insulation is laid out and covered with another layer of film, the edges of which are rolled into a single "cocoon", only after that the door is sewn up from the outside (to enhance impermeability air, the edges of the membrane are carefully glued with tape).

Video: how to insulate a metal door with foam

Door frame insulation

For good insulation it is necessary to insulate the door frame as well. The method depends on the design of the frame, which can consist of an all-metal frame or a hollow profile. This is not difficult to do. Polyurethane foam is poured inside the profile from a household spray. If necessary, holes are drilled on the surface along the diameter of the tube, into which polyurethane is blown. He fills all the free space with himself.

Insulated door frame
Insulated door frame

The inner cavity of the frame is filled with foam

It will not be possible to insulate an all-metal frame in this way, so you need to carefully foam the gap between the frame and the doorway.

Video: insulation of the door frame with mineral wool

Soundproofing metal doors

An important property of the front door is the ability to contain noise from the outside. Metal does not help in this regard. On the contrary, it even enhances sounds. Therefore, the door is supplemented with special internal and external coatings that reduce the level of penetrating noise.

Outer cover

It is carried out using sound-absorbing and vibration-insulating materials. These include:

  • polystyrene;
  • vibroplast;
  • bitoplast;
  • bimast.

These are synthetic coatings, they are a canvas that actively dampens any sounds and vibrations.

Noise insulation material
Noise insulation material

Sound absorbing materials consist of several layers of different density

The order of work is as follows:

  1. Spread the material over the insulated surface and smooth it out. Some types are equipped with an adhesive layer, it is enough to free them from the protective film and press them against the plane of the door.
  2. For others, you must first clean and degrease the canvas. Then evenly distribute the waterproof glue, cover the surface with the material and let it dry completely. It is desirable to carry out pasting both from the outside and from the inside.

Installing the seal

The tool is simple but effective. Earlier felt was used as a sealant, today there is a wide range of finished rubber and rubber products. There are no difficulties with installation, you just need to remove the protective coating and carefully glue the profiled strip along the sash perimeter. Its width should not exceed 25% of the size of the door frame support strip. The thickness is chosen so that in the compressed state (with the doors closed) the seal is reduced by half.

Door seal
Door seal

The seal consists of rubber tubes with a special section

Finishing metal doors

The exterior of the door serves two important purposes. Hides the unsightly appearance of bare metal and protects the canvas from adverse factors. It is especially important to protect the steel surface from excessive moisture as this can lead to corrosion.

The choice of finishing materials is huge. But the most popular are:

  • MDF panels;
  • kozhvinil;
  • solid wood.

Microwood fiber (MDF) is a mixture of wood and carbamide shavings pressed under high temperature and pressure conditions. The material retains the color, texture and tactility of wood, but in terms of strength and elasticity it is not inferior to plastic. A big advantage of MDF panels is their low price. Nevertheless, this type of finish belongs to the "premium" class and in terms of aesthetics is not inferior to the natural massif.

MDF door finish
MDF door finish

The entrance door, finished with MDF, is difficult to distinguish from the natural massif

Professionals also note a number of other advantages of MDF:

  • high heat and sound insulation;
  • increased resistance to fire, fire safety;
  • combination of high strength and ease of processing;
  • resistance to the influence of biological factors: mold, fungus, dampness;
  • ecological cleanliness, the boards do not include toxic and harmful chemicals.

In retail chains, you can find four types of MDF panels:

  • painted with RAL dye;
  • coated with a polymer-based composition;
  • laminated panels;
  • veneered products.

In addition to products in the form of sheets, there is a wide range of additional decorative elements of the door - platbands, accessories, etc.

Kozhvinil is a type of exterior decoration made of artificial materials that imitate natural leather. This group also includes vinyl leather and dermantin. Subject to the technology of covering and operation, the cladding retains its properties for a long time. Kozhvinil is the champion among inexpensive ways to protect doors from noise and hypothermia. Easy to clean with common cleaning products.

Leather door trim
Leather door trim

With proper care, leather-vinyl coating can last for many years

The disadvantages include the flammability of the material and vulnerability to vandalism. It is customary to drape the door in a similar way in the interior. Exposure to open air and direct sunlight quickly results in loss of color and gloss.

Natural solid wood is the most expensive type of finish for iron doors. The cover panel is made by gluing sawn timber and their further processing: grinding, milling, polishing, etc. Expensive types of wood are used for production - oak, beech, mahogany, alder, ash. As a rule, the form of release of a panel from an array is a plate 18 mm thick. This allows the surface to be inlaid with various "subjects". Often, the outer metal cladding imitates the paneled structure of the sash. It is possible to apply ornaments, drawings and other decorative elements. In the factory, wood is not only coated with paint or varnish, but also impregnated with special compounds, thanks to which the material becomes resistant to the adverse effects of the atmosphere, does not dry out and almost does not burn.

The array compares favorably with other finishing materials:

  • elegance in appearance;
  • absolute naturalness and environmental friendliness;
  • durability;
  • increased performance in terms of thermal insulation and sound absorption;
  • the possibility of restoration.
Door finishing with solid oak
Door finishing with solid oak

Oak flooring becomes more beautiful over the years

The entrance metal door, faced with natural wood, is a symbol of respectability. It is most often found in expensive restaurants, five-star hotels, reputable organizations and the offices of large companies.

Video: interior decoration of a metal door


A hand-made metal door is able to protect your home not only from the cold, but also from the wind, noise and unwanted guests. Moreover, the cost of such a structure can be significantly lower than that of finished products. The main thing is to correctly make all the calculations and strictly follow the sequence of work.

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