Metal doors seal: choice and installation

To ensure additional sound insulation, any metal doors require the installation of the seal. How to choose and correctly install a high -quality seal for metal doors will tell this article.

Table of contents:

1. General concept and functions of the sealant for a metal door
2. Varieties of seals for a metal door
3. Rules for the selection of the sealing for a metal door
4. Installation of the seal on a metal door
5. Installation of a self -adhesive seal
6. Review of manufacturers of seals for a metal door

General concept and functions of the sealant for a metal door

The sealant is a fitting element of a metal door. The main function of the seal is to protect the premises from the hit of extraneous sounds. Additional functions of the seal:

• protection of the premises from the hit of extraneous odors;
• thermal protection - a prevention of the formation of drafts;

• Sealing - ensuring a tight fit of the door leaf to the door box.

Consider the basic requirements for a quality seal for a metal door:

• The seal must ensure complete tightness, the door protects the room from extraneous noise, moisture, cold air, small particles of dust or pungent odors;
• The seal provides reliable and smooth closing of the door;
• The seal must comply with high standards that provide water and air permeability and excellent shock-absorption properties of a metal door;
• The seal excludes sharp unpleasant sounds that the metal door makes when closing, after installing the seal, the door closes softly and silently;
• The seal for the metal door should be resistant to sharp temperature changes in order to avoid hardening or peeling off;
• The seal must interact well with the door, gaps should not occur when closing;
• Ensuring fire safety: the use of a rubber circuit to delay cold smoke, the use of a heat -expanding layer to fill the cracks and prevent the spread of fire.

Varieties of seals for a metal door

Depending on the type of material, the seal is divided into:

• rubber,
• silicone,
• polyurethane,
• plastic,
• foam rubber.

The rubber seal for the metal door is characterized by durability and endurance.

Advantages of installing a rubber seal on a metal door:

• high level of air and moisture resistance;
• stability before prolonged exposure to precipitation, temperature changes, ultraviolet light;
• long service life;
• low cost;
• Lack of cracking.

Rubber seals are made of oil -resistant, acid -resistant rubber, which has food or high -tech quality.

Silicone seals are not inferior to rubber, which are great for metal doors. The advantage of a silicone seal is that silicone does not distinguish harmful substances and ensures the environmental safety of the home. Silicone does not provoke allergies, so such seals are installed on metal doors in children's or medical facilities.

The polyurethane seal is easily attached to the door, as it has a self -adhesive film on one side. Plastic seals are rarely installed on metal doors, as well as foam. Although the cost of these seals is quite low, quality characteristics do not allow us to operate such seals on a metal door for a long time.

In relation to the design and type of mounting, the seals are divided into:

• magnetic seal for metal doors;
• seal with an additional clamping mechanism;
• The seal for metal doors is self -adhesive.

The magnetic seal appeared not so long ago, but is increasingly used in the manufacture of metal doors from the manufacturer. Magnetic seals are installed on the doors of the refrigerator or freezer. The principle of operation of the seal is based on attracting constant magnets using poles of attraction. On metal doors, a triple contour of a magnetic seal is installed. The first two circuits are located directly on the door, and the third on the door frame. Magnetic seals have a disadvantage: if there is a strong attachment of magnets, such a door will be difficult to open to a child or an elderly person, and if there are weak magnets, the door will not meet all the requirements of sealing and soundproofing.

It is better to install a magnetic seal on metal doors that do not have decorative elements, but consist of ordinary metal sheets. The magnetic seal has two components: soft part and magnetic insert. The soft part is made of thermoelastoplast. Advantages of using thermolastoplast:

• stability to aging;
• operating temperature from -65 to +90 C;
• After use, secondary processing of this material is carried out.

Recommendations for choosing a sealant for a metal door:

1. When choosing a self -adhesive seal, be sure to specify the expiration date of the glue, which is applied to one side of the tape.

2. Do not use foam seals for the metal door. Indeed, as a rule, the metal door is used at the entrance to the room and has the highest load on the number of openings, foam rubber in this case will quickly deteriorate.

3. Before you prefer a certain seal, carefully study the information about the materials, expiration date and technical features of the seal.

4. In order to check the hermetic properties of the seal, you should press a little on the seal, if the material quickly restored the shape, the seal will provide good tightness.

5. When choosing a seal that requires additional gluing, buy good quality silicone glue.

6. Pay attention to the color of the sealant, in most cases it is black, brown or white, but there are exceptions and some companies allow you to choose the color individually for the color of the door.

7. When choosing a sealant for an entrance metal door, you should not focus on color variety, since the paint significantly affects the quality characteristics of the seal, it is better to choose a standard black seal.

8. The rubber seal should be of medium stiffness, too soft material will quickly become unusable, and too hard the seal will prevent the door to close.

9. When choosing a self -adhesive seal, the sticky side should be covered with small particles of fiberglass.

Rules for the selection of the sealing for a metal door

Before you buy a seal for metal doors, you should determine the shape and type of seal. The seals are sold in roll with an average length of the tape 600 cm, for the standard door this seal will be enough.

To choose the right seal, you need to measure the gaps of the metal door. For this procedure, take plasticine, which needs to be wrapped in polyethylene and insert into the gap, with a closed door. Using a roulette or ruler, measure the length of the clearance.

For a gap, which is from 1 to 3 mm, a foam, polyethylene or polyvinyl chloride sealing of a rectangular shape is used.

For gaps that exceed 3 mm, they use rubber seals that are divided into:

• Seals with the profile of C-shaped, k-shaped or e-shaped-are used in three-millimeter clearances;
• The R-shaped or V-shaped seal is used to eliminate the clearance with a thickness of 3 to 5 mm;
• In the gaps that exceed 5 mm, the O-shaped or D-shaped seal is installed.

When working on the replacement of the seal, you should tear off a piece of the old seal and choose the new seal in the store in the store.

To determine the size of the required seal, determine the number of layers, and then measure the size of the metal door and determine the perimeter of the door box, multiply the resulting number by the number of layers. It is better to purchase a sealant with a margin.

Installation of the seal on a metal door

1. When replacing the sealant, carefully clean the surface of the doors from the old seal with fine sandpaper and wash the doors well with an acetone or alcohol solution.

2. Metal doors are used at the entrance to the room, so it is advisable to install two or three layers of the seal, to ensure more reliable sealing.

3. When installing the seal on the front door to the apartment that does not go outside, install two layers of the seal. Put the first layer on the outer door leaf, and set the second on the door frame.

4. If the seal is installed on a metal door that goes directly to the street, it is better to lay three layers of the seal. The first and second circuit is installed on the door frame and the inside of the door, and the third on the outer surface of the door. Requirements for the external seal for the metal door: resistance to temperature difference, ultraviolet radiation, moisture, atmospheric sediments, the presence of good shapes and tightness.

5. When buying branded doors from the manufacturer, the seal on such doors is present. In the presence of a double narthex of the door, the seal is located on each bout.

6. The installation of a rubber seal is carried out using silicone glue. To do this, the seal is gradually smeared with glue and applied to the surface of the door.

7. When installing the seal on a painted metal door, from the moment of staining should pass at least twenty days.

Installation of a self -adhesive seal

Before replacing the sealant, you should clean the surface of the remains of the old seal and wipe the doors with an acetonomal -containing rash.

Self -adhesive sealing is even easier than rubber. For installation, you need to gradually remove the tape, glue the seal around the perimeter of the door leaf. If the seal begins to hold well over time, use glue or sealant for gluing. When replacing the seal, do not use individual pieces, since there is a risk of poor -quality sealing functions of sealing. Pay attention to the compaction of the corners, since in these places it is possible to wrinkle or poor -quality gluing the seal. After complete gluing the seal, cut the remains with scissors.

Review of manufacturers of seals for a metal door

1. Daventer (Germany)

Peculiarities:

• the use of environmentally friendly materials for the manufacture of the seal;
• the availability of certificates of compliance with international standards;
• excellent restoration properties, after compression of the seal;
• The use of thermoplastic elastomer, which prevents the aging of the seal as a result of ultraviolet radiation.

2. Stomil Sanok (Poland)

Peculiarities:

• high level of wear resistance;
• additional seal circuit;
• manufacturing of a rubber seal of special microporous rubber;
• resistance to changes temperature from -44 to +66 C;
• softness and high elasticity of the seal;
• service life is from seven to ten years;
• The seal ensures the noiselessness of the closing of the metal door.

3. Akord (Turkey)

Peculiarities:

• service life of 5 years and above;
• harmlessness and environmental friendliness;
• prevention of dust, sound or extraneous odors in the room;
• Available cost.

4. Welless (Germany)

Peculiarities:

• A variety of colors: black, beige, transparent, white, brown, dark brown;
• ensuring maximum density and silent closing of the metal door;
• high characteristics with changes in temperature regime;
• stability before chemical influences;
• Antitoxicity, involves the use of a sealant in medical institutions.

5. Varnamo (Sweden)

Peculiarities:

• the use of porous rubber for the manufacture of self -adhesive seals;
• A variety of forms of seals: K-shaped, p-shaped and D-shaped;
• The minimum service life is seven years;
• ease and ease of installation of the seal;
• Rolls are sold in a convenient packaging of 6, 16, 24 and 100 meters.

6. Cyclone (Switzerland)

Peculiarities:

• moisture and wind resistance;
• heat resistance from -40 to +60 C;
• good adhesion of a self -adhesive seal;
• Provides excellent tightness and silent closing of the door.