Interior doors complement the design of our home. Pleasing to the eye with its variety of laminated, veneered, painted surfaces. We do not wonder what is in the middle of the product. It's a pity, because the internal component - filling, largely determines the sound and thermal conductivity of the canvas, and also affects its strength, ability to maintain geometry and service life. There are several types of filling: honeycomb, bar, chipboard, tubular chipboard, etc.
Honeycomb filling of the door leaf
The beginning of the era of aircraft construction (40-50 years) was the appearance of honeycomb fillers. They were used to lighten and give permanent shape to aircraft structures. The composition began to be actively used for interior doors in the middle of the last century, making them stronger, lighter, and cheaper. Such filling of the internal space is one of the most common today.
honeycomb filler is a cell (honeycomb) made of pressed cardboard - corrugated cardboard, compressed by a material enclosed in a frame. With the help of bars, the place near the lock is strengthened, and due to the air spaces in the cells, the filler makes the doors lighter (max 17 kg), facilitates installation and reduces the load on the hinges. All the advantages of honeycomb filling include moisture repellency and support for a permanent shape. Such doors made of chipboard and MDF are given a presentation: they are laminated, veneered or simply painted. Modern filler (shockproof alloys, opaque materials) is used in canvases with an anodized aluminum (Al) profile - these are modern German doors made of aluminum (Al) and steel, in combination with glass.
Slab filling of the door leaf
Bar filler is partial. The bars inside the door are at a distance of 5-7 cm from each other, which facilitates the door leaf and the load on the hinges.
Solid filler, when the bars fit snugly together - high sound insulation and the ability to withstand heavy loads.
Filling the door leaf with chipboard
Chipboard filler is obtained by hot, flat pressing of wood particles, plus a binder. This method fills economy class products with low traffic.
Extrusion board - this filler is obtained by vertical pressing, wood particles are perpendicular to the board, which enhances strength. Such a filler is located between the canvases of MDF, chipboard, HDF. To give a presentation, it is covered with veneer or enamel.
Extrusion - tubular filler - is the use of plates with voids (holes in the form of tubes), as an alternative to honeycomb. These are much lighter, hence easier installation, less wear of the loops, more economical, since little material is spent on the canvas. They are not afraid of a large passage of people, withstand a pressure of 20 kg / cm. sq., shockproof, heat and noise resistant. This material meets the highest quality requirements.
The company's website presents products from various profiles with modern design. Do right choice a sales assistant will help you, professionals will fulfill an order that meets your desire, deliver and install it on time. The company has existed for 6 years in the construction market and has established itself as a serious partner.
Honeycomb filler in interior doors is corrugated cardboard pressed in the form of honeycombs. If you look at a door with such a filler in the section, then the filler will remind you of a honeycomb. As a rule, the design of a door with such a filler looks like this:
door frame (MDF or solid wood)
cladding (from plastic to solid wood)
block for locking
corrugated board filler
What are honeycomb doors made of?
Let's start with the door frame. It does not differ from other types of doors - in several bars. As for the filler, corrugated cardboard is corrugated cardboard. Doors with such a filler are suitable for low-rise buildings. Due to the fact that they can withstand weight up to eighty kilograms.
The functions of the honeycombs in the doors are as follows: 1) to fill the empty space; 2) give interior door stiffness; 3) exclude possible deformation of the door. Honeycombs can vary in stiffness. Some are tougher and some are less tough.
In Russia, the most common type of honeycomb is honeycomb with a cell size of 45 millimeters and a compressive strength of 500 grams/cm2. This is the state standard. You should also remember that the size of the cells in the doors may differ depending on the manufacturer - not everyone follows state standards. Remember the main thing - the smaller the cell size, the better, the higher the density and rigidity of the honeycomb filler.
Benefits of honeycomb doors
the main advantage is the price. Doors with such a filler are inexpensive, but again, we must not forget about the cladding. If you buy a veneered door with a honeycomb core, it will be more expensive than a PVC door with the same honeycomb core. For example, our Marco DG door in natural walnut color costs around 10-11 tr.
door environmental friendliness. Unlike PVC and other synthetic materials, corrugated cardboard is environmentally friendly and safe.
resistance to changes in temperature and humidity conditions, resistance to light shocks.
a door with such a filler will be light. Within seventeen kilograms.
Disadvantages of honeycomb doors
The main disadvantage of honeycomb filler is its soundproofing properties. If we try to evaluate on a five-point scale, then we would put 2-3 points.
another drawback of the filler is that it is used to reduce the cost of door production. Hence the relative cheapness.
Thick cardboard is used with the method of laying on the principle of honeycombs, which is why it got its name. Honeycomb filler comes in different qualities; fine-mesh honeycomb and large-mesh. There is also just crumpled cardboard, with which unscrupulous manufacturers fill the voids in order to reduce the cost of their products as much as possible.
honeycomb filler good quality, especially if it is fine-meshed, it provides the door with good rigidity and little heat and sound insulation. Doors with honeycomb filling are resistant to external influences, withstand changes in humidity and temperature. These doors are lighter than conventional doors and are more suitable as decorative element not restraining.
2. Rack (bar filling).
This type of door filling refers to full-bodied or (DU) reinforced doors. And they can also serve as entrances to the premises (DN), external doors.
Advantages: Good resistance to mechanical damage, good soundproofing properties.
Disadvantages: high cost and significant weight of the door, inability to use in rooms with variable or constantly high humidity, good flammability.
There is a full bar filling and a small-hollow bar filling (partial bar filling), it is also called (rack filling every other time), inside the canvas the bars are located at a distance of 5-7 cm relative to each other. With partial filling, the door has sufficient strength, acquires lighter weight and lower cost. But at the same time it loses heat and sound insulation qualities.
3. Extrusion filling (Tubular chipboard).
The most progressive and most commonly used today, filling. There is solid and tubular chipboard. Such filling, even tubular, retains the strength, heat and sound insulation properties of the bar filling. At the same time, it is deprived of their shortcomings, high cost, large weight of the door, sensitivity to humidity and flammability.
Many apartment owners today install external armored and steel doors. It is necessary to choose the right external door, evaluating not only the thickness of the metal in the door leaf, but also the characteristics of the filler. The good performance of the door depends on this. They need to be carefully examined in order to decide which door filler is suitable for your family.
Sectional door elements.
Why is it necessary internal filling door designs? The purpose of these structural elements consists in thermal and noise insulation of residential premises from the influence of the outside world. As a result of the use of filler materials, the degree of rigidity increases door leaf. The quality of the internal filler and the design possibilities are directly dependent. outer door carry out their main functions. To understand which filler is better to use for the purpose of insulating an external door, you need to find out what their characteristics are. Which door filler is better to choose? This question is asked by all people who have to solve the problem of acquiring a metal door.
What criteria should be used to choose these materials: what door filler to buy
Door section with honeycomb filling.
- They must be safe for environment and family members living in this apartment.
- Maximum isolation from external noise in the common corridor is required.
- The door must reliably keep heat in the apartment.
- The door leaf must be waterproof.
- The door should serve for a long time during its operation.
- What matters is the price that the landlord expects.
Each apartment owner has his own priorities in the arrangement of his home. For some, the price does not matter, for another, silence in the house is important, and so on. But it is extremely important that it is safe for all family members to live in the house. Therefore, it is this criterion that must be taken into account in the first place, choosing Construction Materials to solve the problem of isolation of the external entrance opening.
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Mineral wool from rocks
Characteristics of the main brands of mineral wool.
Previously, the use of this fibrous material was limited to the defense industry. And only now it began to be used in construction.
- Such an innovative filler is a universal material for thermal insulation and sound absorption.
- Its price is relatively low and accessible to everyone.
- This substance has a fibrous composition and is made from molten rocks or blast-furnace slag.
- Mineral wool, which was obtained by the first method ( stone wool), is a high quality filler with excellent properties.
- This insulation is impact resistant. high temperature, dampness and aggressive environment, has a small shrinkage.
- 6. Therefore, this substance is undemanding to operating conditions and can serve for more than half a century.
- 7. This material allows for an environmentally friendly filling of the door leaf, providing reliable protection premises.
- 8. Excellent flame retardant quality of rock wool is enjoyed in installation fire protection structures and doors.
Builders consider this excellent fire-resistant filler one of the most effective materials for filling door leaf structures. But all this applies to mineral wool made from rocks.
Slag wool: features
Scheme steel door with rubber seal.
Mineral wool, which is obtained from blast-furnace slag (slag wool), under adverse conditions of dampness, high or low temperature and various types deformations does not have the property of reliable durability.
Such mineral wool has a big drawback. Over time, sedimentation of this substance occurs. This leads to the formation of voids in the cavity of the door structure. To avoid this, manufacturers install additional frame ribs that do not allow the filler to slide down.
Typically, its scope is cottage construction, the erection of temporary structures and structures that can be easily subjected to repair effects.
Corrugated cardboard: advantages and disadvantages
The main characteristics of the corrugated box.
This is an inexpensive door insulation that has great property. It absorbs noise. special design of this filler is similar to "honeycombs". It is a corrugated cardboard frame inside a metal door.
- This material is characterized by rigidity, horizontal and vertical resistance. Rigidity to a corrugated cardboard is given by the corrugated paper located between cardboard layers.
- Its special composition does not allow moisture to pass through.
- Also, among the advantages of corrugated cardboard include low weight, which does not weigh down the door structure, and relatively low prices.
- Low price, good heat and noise insulation are the undoubted advantages of this filler.
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But this heater also has disadvantages. Since he is thick paper, high humidity is detrimental to him. For this reason, the service life of such external door structures are reduced if their tightness is violated.
Styrofoam: effective, but can be dangerous
Styrofoam characteristics.
- It is a good heat-insulating material with excellent sound-absorbing qualities.
- Its porous structure gives the filler excellent sound-absorbing qualities, frost resistance and non-hygroscopicity.
- Polyfoam is a harmless, environmentally friendly material that is durable and retains its performance for a long time.
- Being one of the most effective heat-insulating materials, it has a very affordable price.
But a serious drawback is its extreme flammability. It melts and burns very quickly. When burned, they release very a large number of toxic combustion products and toxic smoke. Such parameters do not allow to consider polystyrene the best option to fill the outer door.
Foamed polyurethane
The main layouts of dispersed fillers.
This is a material that has many bubbles in its composition. Therefore, it is lightweight and durable. The voids of the door space are filled tightly with this filler. The modern construction market offers two types of polyurethane: elastic and rigid. The latter has the greatest application.
- It is distinguished by high wear resistance, moisture resistance, durability, environmental friendliness, and effectively protects against extraneous sounds. This is a good heater.
- Typically, such a substance is used to install high-quality external doors, since it has a higher cost than mineral wool and foam.
In addition, being a synthetic material, polyurethane filler is highly flammable and releases toxic substances. This can become an argument against such material when solving the problem of which door filler to find.
Penopropylene: pros and cons
- Very valuable features of synthetic materials - fillers for metal doors - are combined in polypropylene. This material is different good performance heat, hydro and sound insulation for a long time.
- Its service life is calculated up to 70 years, it is resistant to various loads.
- Its advantages are light weight, ease of installation, resistance to impact chemical substances. It is pumped under pressure and does not shrink, unlike mineral wool.
- The fire safety characteristics of this substance are significantly better than those of polyurethane filler and foam.
Honeycomb doors in comparison
- Resistance to external influences;
- Good soundproof properties;
- Made from environmentally friendly materials;
- Design reliability;
- Good thermal insulation properties;
- Resistant to changes in humidity and temperature;
There are many such doors on the market: they can be either glazed or finished with a laminate film, or deaf; both smooth and paneled. The color range of iron doors is very diverse, which allows you to choose a model suitable for any room design. Most often, honeycomb-filled doors are used as interior doors, and it is highly recommended not to install them at the entrance. This is due to the fact that they are inferior in strength metal doors, but indoors these doors are extremely reliable in operation. They are resistant to moisture and do not swell when in contact with water, do not dry out and do not warp over time. In addition, they have good heat and sound insulation properties.
Cheap honeycomb doors
Another clear advantage of honeycomb doors is that they cost a little less than a door made of solid wood. Order doors with honeycomb filling in the Garant Service company and you will receive professional service and a quality product. For all types of doors we provide a quality guarantee.
