What is the best way to cut insulation boards Knauf. Mineral wool cutting, what and how to cut mineral wool in a roll and slabs
There are different types of mineral wool: glass and basalt. The latter is made from a rock. gabbro-basalt. In the manufacture of it added carbonates, which allows you to regulate its acidity. Basalt wool
A factor such as. Acidity, is of great importance for mineral wool. The more acidic the wool, the less sensitive it is to water.
The kind of wool in which the acidity is greater is considered more durable. Synthetic, bituminous or composite clays are added to give it shape. Glass wool requires no special explanation, its name speaks for itself.
This is a mineral composition, for the manufacture of which, uses the same components as for glass (it can be broken glass).
The two types of wool differ from each other in properties. Glass wool is usually 15 microns thick (from 3 microns), but basalt wool is several times longer.
Insulating roofs with mineral wool is difficult when working on sloping roofs with a rafter structure. In such cases, it is better to use dense absorbent cotton. To prevent moisture from accumulating under the roof, you should use cellulose wool.
How to cut the insulation along?
To cut: a sharp office knife, a metal hacksaw or a hacksaw for insulation. If the thickness of mineral wool is 50 mm, it is more convenient to use a knife. The thicker material (100 mm) is cut with a metal or thermal insulation hacksaw. To make the cut evenly, you should draw a line for the trimmer with a pencil.
- installation knife;
- hacksaw for wood or metal;
- A serrated kitchen knife to cut the loaf;
- Special tools: a knife with a stainless or carbon steel blade. The latter type is used for cutting different kinds of mineral wool and is distinguished by its sharpness and good cut.
How to cut mineral wool?
Due to the fibrous structure of the material, small glass wool particles fly around during cutting. Dangerous elements must therefore be prevented from entering the skin and respiratory tract.
Before you cut the insulation material, you must comply with the following conditions:
- The room should be well ventilated.
- The use of protective equipment and special clothing is mandatory in the work process. This involves gloves, a respirator, mask, overalls and goggles.
- After cutting the material it is advisable to wash your face and hands under cold water.
To ensure that as few of the glass wool particles as possible are trapped in the air, a tool with a high precision should be used.
The insulation material should be cut without unrolling the roll
Tip! It is best to cut the material crosswise.
In order to obtain strips of absorbent cotton of equal width, you should cut the material straight from the roll. If the wool is in the form of boards, then cut them one by one.
To ensure that the strips of wool, cut independently at home, turned out even and identical, you should divide them clearly according to the marks. Also, you can use a ruler as a cutting line.
Leave an allowance around the edges when cutting. If it is a roll, the index should be 0.5 cm, and if the plate. 2 cm. Such a feature of cutting is needed to ensure that the mineral wool element completely fills the necessary space.
Recall that mineral wool slabs are cut one at a time, and the material in rolls is cut without unrolling.
Performance features of basalt wool
Mineral wool has the following advantages:
- a wide range of products. Minwool is available in the form of slabs, rolls or mats. This allows you to choose the option that is best suited for the thermal insulation of a particular area of the building. Also types of mineral wool differ in density: the material in the form of slabs has a high density, and roll insulation is lighter;
- Has high thermal insulation characteristics. Mineral wool has a porous structure. This material consists of small layers. Due to this, it retains heat well, as well as provides excellent noise insulation;
- fire safety of the material. Minwool does not combust and does not spread fire. For this reason it is often used for insulation of floors between floors. Manufacturers of mineral wool claim that this material can withstand temperatures above 900 degrees Celsius;
- Minwool does not warp, and this is a very important advantage. This material does not shrink, so there is no “cold bridges”, which cause heat loss;
- frost resistance. This property allows the use of mineral wool for thermal insulation of external elements of the building;
- mineral wool is an environmentally safe material. It is used for thermal insulation of sanatoriums and medical institutions, as well as children’s rooms.
this insulation is available in different forms. in slabs, cylinders, mats, you can buy wool covered with foil.
Mineral wool has some peculiarities that cannot be called positive. These include:
- low durability. This is due to high porosity mineral wool;
- To ensure a high level of thermal insulation this material should be used together with a waterproofing film and vapor barrier membrane;
- When using mineral wool with glass fibre it becomes unsafe because they add formaldehyde;
- high hygroscopicity (so a high waterproofing is done).
To mount such a heater on the inner side of the rafters are nailed planks (they make a grid), which will be attached to the wool. On the outside lay absorbent cotton in one layer (the layers depend on the thickness of the wool).
After laying insulation, waterproofing. Important at this stage is not to confuse the sides of the insulation. The upper layer does not let the moisture through, and the bottom layer. an obstacle to the vapor.
The waterproofing is not stretched, there is an air space between it and the wool. In front of the ridge must remain air space, which will create additional draft.
- thermal insulation and hydrophobization. The first parameter is from 0.042 to 0.048 W/mK. Approximately the same characteristics have other well-known insulation materials (eg, polystyrene foam, polyurethane foam). Minwatt is not able to accumulate moisture (hygroscopicity. less than 1%), which makes its weight unchangeable. A distinctive feature can be called a vapor permeability, which guarantees insulation and at the same time an intense exchange of moisture between the outside environment and the walls of the building;
- density, strength. The heat insulation has a sufficient density (from 30 to 100 kg / cu. m), which guarantees high thermal insulation properties with optimal strength. Stiffness of the material is provided by the direction of the fibers, they are located in the horizontal and vertical directions;
- sound insulation. Good noise protection characteristics are achieved due to the porous structure of the wool;
- resistance to aggressive environment. Wool is “indifferent” to alkalis, acids; it does not rot, fungus does not attack. Rodents also bypass this insulation;
- fire resistance. Basalt wool can withstand heat up to 700 ° C. This protects the structure from total destruction in a fire and gives time to evacuate the occupants;
- health safety. In production, resins containing harmful substances (formaldehyde, phenol) are used. However, compliance with the technology implies their introduction into the composition of insulation in a chemically bound state. Substances become completely neutral to the environment and pose no danger to humans.
Operation features of basalt wool
Mineral wool has the following advantages:
- a wide range of products. Minwatu is produced as plates, rolls or mats. Due to this it is possible to choose the option that is best suited for the insulation of a particular section of the building. Also, types of mineral wool differ in density: the material in the form of slabs has a high density, and roll insulation is lighter;
- has high thermal insulation characteristics. Mineral wool has a porous structure. This material consists of small layers. Due to this, it retains heat well, and also provides excellent noise insulation;
- fire safety of the material. Minwata does not combust and does not spread fire. For this reason, it is often used to insulate interfloor ceilings. Manufacturers of mineral wool claim that this material can withstand temperatures above 900 degrees Celsius;
- Minwool does not warp, and this is a very important advantage. This material does not shrink, therefore there is no formation of “cold bridges”, which cause heat loss;
- frost resistance. This property allows the use of mineral wool in the insulation of external elements of the building;
- mineral wool is an environmentally safe material. it is used for thermal insulation of sanatoriums and medical centers, as well as in children’s rooms.
This insulation is available in various forms. plates, cylinders, mats, you can buy wool covered with foil.
Mineral wool has features that can not be called positive. These include:
- low durability. This is due to the high porosity of mineral wool;
- To ensure a high level of insulation this material should be used together with a waterproofing film and vapor barrier membrane;
- When using mineral wool with fiberglass, it becomes unsafe, because formaldehyde is added to it;
- High hygroscopicity (therefore a high waterproofing is done).
To fix such a heater on the inner side of the rafters are nailed planks (they make a grid), which will be attached to the wool. On the outer side the wool is placed in one layer (the layers depend on the thickness of the wool).
After laying insulation, waterproofing is applied. Important at this stage is not to confuse the sides of insulation. The top layer does not let moisture in, and the bottom layer. an obstacle to the vapor.
The waterproofing is not stretched, between it and the wool air space is left. In front of the ridge must remain air space that will create additional draft.
- Thermal insulation and damp-proofing. The first parameter is from 0.042 to 0.048 W/mK. Approximately the same characteristics have other known insulation materials (such as polystyrene foam, polyurethane foam). Minwata is not able to accumulate moisture (hygroscopicity. less than 1%), which makes its weight unchanged. A distinctive feature can be called vapor permeability, which guarantees insulation and at the same time intensive exchange of moisture between the environment and the walls of the building;
- density, strength. the insulation has a sufficient density (from 30 to 100 kg / cu. m), which guarantees high thermal insulation properties with optimal strength. The rigidity of the material is ensured by the direction of the fibres; they are arranged horizontally and vertically;
- sound insulation. Good noise protection characteristics are achieved thanks to the porous structure of the wool;
- resistant to aggressive environments. Wool “indifferent” to alkalis, acids, do not rot, fungus is not affected. Rodents also bypass this insulation;
- fire resistance. Basalt wool can withstand heat up to 700 ° C. It protects the structure from total collapse in case of fire and gives time to evacuate the occupants;
- health safety. in the manufacture of resins containing harmful substances (formaldehyde, phenol). However, compliance with the technology implies their introduction into the composition of insulation in a chemically bound state. The substances become completely neutral to the environment and do not pose a danger to humans.
As materials for finishing coatings you can use any wallpaper, paint or tiles. Let’s talk about tiles. First you need to determine the step by step workflow, which should consist of surface treatment and marking, preparation of tiles and adhesive composition, the actual installation, as well as the subsequent grouting of joints.
- Before laying tiles on GFB, you need to treat the sheets with a special primer coat and wait for it to dry.
- It is necessary to determine the required number of tiles based on the length and width of the surface to be treated. Knowing the dimensions of the products, taking into account the width of the joints, you can calculate their total number.
- Now you need to apply the adhesive composition to the surface, distributing it evenly with a trowel.
- When laying the tiles on the GFB, you need to put a little pressure on it in order to increase the reliability of attachment. Many experts recommend using a rubber mallet for this purpose.
- You must leave equal gaps between the tiles, carefully clearing them of glue. After 24 hours (when tiling walls) or 48 hours (floor) joints between tiles must be wiped with special joints. All this time in the room you need to maintain a minimum level of humidity.
Known manufacturer GVL. KNAUF. Recommends using only quality materials for processing and following all steps in the process. German experts advise to use a special brand glue for tiles FLIESEN, preparing it in small batches, sufficient for the processing of the surface area of 1 m2.
That’s all, we hope that our article will help the novice craftsman to choose a variant of finishing for your favorite room. If an experienced craftsman respects us with his attention, we will ask him to share his experience and tell us how best to reduce GVL, how it can be reduced, and most importantly. How to avoid mistakes when doing such work.
Are there any nuances in transportation and storage?
Manufacturers recommend storing mineral wool in a complete package, and it is better if the pack will be placed on a flat surface. Each stack of packages should not be higher than 2 meters. Optimal storage conditions are closed rooms, resistant to moisture. It is not recommended to store the insulation outdoors, but if this happens, then you need to cover it with a tarpaulin or film.
Wool should only be stored horizontally
When transporting, it is worth following the same rules: transport the wool horizontally and in a dry truck bed. It is also necessary to ensure that the material is protected from mechanical stress and atmospheric precipitation. When loading and unloading the material should not be strongly compressed.
Unpacking the mineral insulation also requires certain nuances. Material should be taken out of the package only before the start of work, which will minimize the various risks associated with damage to the insulation. When laying out the material to be cut, use its packaging as a bedding. So the product doesn’t get dirty. Also, packaging can be used to collect other debris on a construction site.
Saws on mineral wool
Intensive use of the machine and cutting tool automatically results in wear and tear. Handling glass wool, mineral wool, and other abrasive materials has a particularly strong effect on the parts of the tool that come into contact with these materials.
Wear under the carbide tooth is a common problem when cutting mineral and glass wool.
One of the well-known problems in processing glass and mineral wool is the rapid tool wear, especially on the cutting tools. This consumable requires regular replacement. For this reason the maintenance costs are high, and interruption of the production process is quite frequent. The constant friction on the mineral wool takes a heavy toll on the saw blade very quickly. This abrasion invariably results in a loss of quality.
The conventional approach is to overlap the cutting inserts on the main disc and the area below the insert is subject to abrasion. Wear causes destruction of the saw blade. This damage causes the inserts to fail and break very quickly.Even if the inserts are not damaged, they cannot be used again
The disadvantages of the traditional approach are
- Rapid wear of the saw blade body
- Breakage of carbide tines at high speed
- Regular production stoppages
- High maintenance costs
The modern approach to carbide-tipped sawing eliminates all the disadvantages of the traditional method. This technological solution is the result of negotiations with suppliers and manufacturers and is the result of many years of development.
Thanks to the combination of a 2.5x expansion of the contact surface and the new carbide tooth liner method, the wear of the saw blade body is significantly reduced. Testing has shown that the saw blade body and carbide tooth last much longer due to the new method.
This new technology has been specially developed for thin insulation materials with circular saw blades, and for both low and high-density materials. Milled circular saw blades are recommended for high-density materials, whereas it is better to use flattened blades for low-density materials. New surfacing method can be used for many different blade diameters.
Advantages of the new technology
- Unchanged, lasting cutting quality
- Longer blade life
- Carbide tooth is used longer
- Saw blades do not need to be replaced as often, resulting in less downtime
- Reduced maintenance costs
All our discs are available in any diameter and any size up to 1100 mm. at the customer’s request. All circular saw blades and saws have hardened carbide teeth and hardened blades. We produce all kinds of circular saw blades with or without cooling slots.
Cutting of insulation materials is difficult and requires high quality saws and blades. We offer circular blades and circular saw blades of the best quality and we are constantly working on their improvement.We try to make our blades as durable as possible and we are working to reduce the amount of dust that can accumulate when cutting with our blades.
Our company has started to work in a new direction, namely the cutting tools for sawing mineral wool, based on basalt fiber, glass wool.
Circular saw blades were tested in various plants and have proven very reliable.
Circular saw blade type 1A
This kind of circular knives is especially popular on the equipment of the Italian company Gamma Meccanica SpA main size D800 d100 for cutting boards as well as for edging
Circular blade type 1F
Circular knife type 1FF 2 CUT
Photo is temporarily not available For further information
Circular blade type 1FF 3 CUT
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Circular blade type 2B
For more detailed acquaintance For all questions connected with the order of disks for sawing mineral wool contact the head of department of sales Mishin Michael by phone: (495) 978-31-81,778-89-32,8-903-164-84-56 fax This page presents saws on mineral wool, learn about presence, price and delivery possibility of this production in your region you can u our manager. Continuous availability of circular saw blades in our warehouse guarantees uninterrupted delivery of the tools to the customer.