How to cut gvl sheets. Knife for cutting drywall

A gypsum fiber board is generally stronger than drywall, so it is used where GKL or GKLV cannot withstand the load - for example, when creating floors in a dry way. However, it is more difficult to cut GVL, moreover, such a sheet is more fragile and, if handled carelessly, it can burst anywhere.

So technology. Marking is done in the same way as in the case of drywall, but only here it makes sense to connect the risks with a pencil or a chopping paint cord, and here's why. The fact is that using a knife for cutting GVL is not the most productive way. Most often, power tools are used here - either circular saw, or a jigsaw. In the first case, you need a tool with a tooth on a tree (whether there is a hard-alloy soldering is not so important), a toothless disk gives good results - coated with diamond grain. In the second case, you will need a file with a universal tooth configuration. With small amounts of work, you can use a hand saw for wood.

If you still decide to use a knife, then you need to cut according to the steel rule. The gypsum fiber blade itself has more complex shape than a general construction knife. It is made in the form of a hook / claw, choosing a deeper, rather wide groove. Several passes may be needed, it all depends on the thickness of the plate and its actual density.

Important! GVL does not break like drywall. The notched sheet should not be lifted, due to the danger of its uncontrolled fracture, it is more correct to simply put some long, even object under the cut line, for example, a wooden block 40X50 mm, attach a rule along the slot from above, and then gently break the plate.

If it is necessary to trim the cutting edge, then the peeling planer will not cope with the task, you need to use a regular carpentry planer.

Learn more about the methods and techniques of working with building materials, as well as other articles you can read on the site elka-palka.ru, they set out a lot of important things in a very simple and accessible way. For example, you can find out:

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How to get rid of squeaky wood floors
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Many people think that GVL is some kind of drywall and try to cut it with ordinary household knives. To do this in the case of GVL is unlikely to succeed for quite objective reasons.

GVL specifics

Gypsum fiber sheet, like GKL, is made on the basis of building gypsum. But the similarity of these materials is limited to this. Unlike drywall, GVL has the following characteristics:

Solar uniformity of internal mass;
Absence of an external covering from dense paper;
The presence of reinforcement from cellulose fibers;
High degree of strength;
Zero flammability;
Withstand humidity up to 70%.

With all the strength characteristics, the material practically does not bend and is quite fragile to fracture. With the wrong tool, you can simply crush the slab. That is why a special tool is required to cut it.

Tools for working with GVL

GVL can be cut with the following tools:

A hard construction knife - while the blades will have to be constantly changed, as they quickly become unusable;
Hacksaw for working on GVL - on the canvas, the teeth of a special shape are located at a specific angle. This is done so that the material does not dust and does not crumble when cutting;
corner grinder machine(Bulgarian) - the most fast way cut GVL, but the dust will stand as a column. Work should be in glasses and a respirator;
Electric jigsaw - it is better to use a model with a built-in dust collector. Use a canvas on wood with a step of 4mm.

GVL cutting technology

Regardless of which tool is chosen for cutting, it must be remembered that the material is easy to crumble. In this case, we will describe the procedure for cutting with a construction knife, since this method is the most budgetary. The sequence of actions is as follows:

A clear marking is applied to the gypsum-fiber sheet.
As close as possible to the marking line, a long metal ruler should be attached, a clean rule or a flat rail will do.
With a construction knife, the markup should be carried out several times.
It is necessary to obtain a groove with a depth of more than 2/3 of the sheet thickness.
The sheet breaks with a sharp movement towards itself.

It is worth taking into account the popular models of drywall cutting tools. Each knife has its own characteristics, blade thickness and scope. However, all are suitable for the mission of cutting out shapes from plasterboard. The following options are often used:

stanley drywall saw;
drywall hacksaw stayer;
knife milwaukee 48229304;
Milwaukee cutter;
clerical (jack-off) knife;
cutter with a blade in the form of a disk;
blade runner knife.

These knives are more often used in the process of working with drywall.

A Stayer drywall hacksaw is used to cut circles. On the shelves of hardware stores, they are presented in different variations.

Manufacturers

If you go to any hardware store, you will find that there are a lot of different tools and equipment from a large number different manufacturers. It will be difficult for a beginner to choose tools for working with drywall, since the choice itself is very large. It is difficult for an inexperienced person to understand why tools designed for the same purpose have a difference in price of 5 or even 10 thousand.

But specialists who have been working with drywall for a long time understand that it is better to overpay for a tool than to risk health with low-quality samples of equipment. Also, we can recommend equipment from Bosch, which has a rather high price, but you can be 100% sure of its quality.

Equipment from such firms serves for years, because it is designed for this. It is in demand both among craftsmen who have been working with drywall for a long time, and among beginners who have heard about the reliability of this company. If you are not very versed in repair tools, then we advise you to take samples of Bosch equipment, as it has long established itself in the construction market.

How to choose a drywall tool

The most important power tool for installing gypsum boards is a screwdriver. It can be replaced with a conventional electric drill, but it is more convenient, faster and easier to work with a screwdriver. Exist different types screwdriver with battery or mains power. Since the GCR is not very solid material, then its power can be small, the number of revolutions per minute should reach at least 300.

When choosing a screwdriver, pay attention to the length of the cord and its weight. If it has a belt mount, then this is only a plus, because it will be easier to work with it when finishing the ceiling. A cluster screwdriver is often used by professional workers because it allows you to quickly sew up sheets with screws and self-tapping screws, which are attached to a special tape. Such a screwdriver is quite expensive.

A drywall cutter is a screwdriver attachment that is designed to make circular holes in a sheet. Nozzles are various sizes by diameter. With the help of them it is very convenient to make holes for sockets and switches, as well as for lamps in the ceiling plasterboard. Drywall cutters come in various types:

V-shaped;

cutter for walls;

Perforator - designed for drilling holes in the wall. It is also necessary to have it when installing the GKL. Quality models are usually multifunctional, they can work as an impact and jackhammer, and they also have the ability to drill. If we described above hand saws on drywall, it should be noted that there are also electric ones.

An electric hacksaw for drywall can be of a battery type and a network one. If you purchase a power tool for cutting drywall, then you should know that high power is not needed to cut drywall. The functions of a hacksaw for drywall can be performed by special tools that have various nozzles for sawing and grinding materials. Using this tool, it is quite easy and fast to perform curly cutting of material.

The renovator is an electric drywall cutter. Such a cutter is most often found in a battery type. The renovator contains many different attachments. You can also purchase a cheaper but less functional electric cutter for working with GKL. A grinder is used to cut profiles made of thick steel. If you use ordinary profiles, then a regular cutter is also suitable for installation.

The installation process of this building material is not complicated and can be performed without special building skills, but as you can see, the inventory in this matter is one of the most important elements. Using electric knives and drywall hacksaws, cutting is much easier, but if you are not doing repairs professionally, then hand tools are also suitable for cutting.

For the installation of drywall walls, there is a certain set of tools and fixtures that is designed to facilitate this task.

Some of them are specific and will be useful to you only when working with drywall, but there are also those that can be used for other work.

In this article I will try to cover the entire list of tools and give recommendations on their selection and use.

When working with drywall, a lot of operations are performed, so the list of tools is quite extensive.

Roulette;
Plumb;
Pencil or marking cord;
Building level.
pliers;
Hammer;
Perforator;
Screwdriver;
Bulgarian;
cutter;
Scissors for cutting metal;
Special planes for leveling the edge or chamfering drywall;
Spatulas of different widths.

cutting drywall

Sheets of drywall, during the installation process, must be accurately and accurately cut, for this purpose the following tool is used:

Usual stationery knife made of plastic with replaceable blades. He copes well with his tasks, but such knives break very often and their ergonomics are poor, so professionals prefer to use special knives for GKL. Such knives are significantly more expensive than stationery ones, but they are made of more quality material, have more reliable clamps for the blades and are much more ergonomic, which allows you to work with them for a long time without fatigue and inconvenience.

Tip: choose knives with a screw-mounted blade and a rubberized handle, it is more reliable and safer, you can no longer be afraid that the blade will come off at the most inopportune moment due to the fact that you accidentally hit the stopper.

Exist specialized cutters for cutting sheets of plasterboard: allows you to cut even strips up to 630 mm wide. But they are too expensive and their use does not greatly affect the speed of work.

When to perform curly cutting or undercut in place, use drywall hacksaw. The reduced width of the blade, special sharpening and setting of the teeth of such a hacksaw allow you to perform a figured cut of any complexity, as well as cuts in hard-to-reach places on sheets already installed on the frame. There are hacksaws with double-edged blades, but they are not so popular in use.
If it is necessary to make holes in an already finished wall for installing sockets or switches, then use set of crowns for drywall. They are sold at any hardware store and many hardware stores. Can be used crowns for metal, they are stronger, more reliable, so they can also saw through a metal profile if necessary.

For making holes, but in a wider range of sizes, you can use a drywall ballerina. At different types ballerinas have a different range of holes, the largest of them is from 12 to 400 mm.

If it is necessary to create curved surfaces (arches, columns), transverse cuts are often made on one side of the sheet in order to bend it. But also for these purposes, you can use a special needle roller, which, when rolled along one side of the sheet, leaves behind a perforation.

Electric jigsaw. This tool can be convenient to make long cuts, and in particular it becomes necessary if a cut of a complex curvilinear shape is required. As a rule, our electric jigsaw is included in the tool "arsenal" of any private house, since it is difficult to do without it on the farm.
A special knife for cutting drywall or a regular clerical knife with a replaceable blade. More detailed information about this group of instruments will be provided below.
A narrow hacksaw for wood with a small set of teeth, or a special hand saw for drywall.
Electric drill with a set of large pen drills, as well as crowns - for cutting large round holes for wiring communications, sockets for installing electrical outlets and switches.
A drywall planer or a regular wood planer. This tool will be necessary for processing edges when cutting material.
A spiked roller will be required if it is necessary to form an arched opening from drywall or another curved surface, for example, for a complex ceiling multi-tiered structure.
To measure and mark sheets, you will need a simple pencil or marker, tape measure, building square, meter metal ruler. If there is no ruler, it can be replaced by a flat metal profile used to equip the frame crate. In addition, you must have on hand building rule for making long straight cuts "under the ruler".

Due to the fact that the main tool for cutting drywall is a knife, its characteristics should be considered in more detail.

Categories of knives	Characteristic features of the tool
Standard knives	Such knives are the most affordable tool, and this is their main advantage. The design is quite simple, since it consists of four elements - a body-handle, a cover-latch, a blade regulator-latch and a replaceable blade itself. The reliability of such knives is quite low, especially when used for cutting drywall. They are more suitable for cutting paper. When cutting drywall, the blades become dull quickly.
Reinforced knife models	These are more expensive options compared to standard models. They differ from the first ones in the presence of a metal guide installed in the body, which fixes the blade more securely and ensures the rigidity of the position during the cut.
Professional knives	Such tools are used by craftsmen who constantly work with drywall. There are a lot of options for professional knives. They differ from each other in the ergonomics of the body, the principle of operation of the latch and some other design nuances. The price of such models is many times different from those mentioned above, and sometimes reaches 1000 rubles.

Gypsum fiber sheet is moisture resistant, fireproof. And of course, it is quite strong and solid. It has many properties similar to drywall. But thanks the best squad has much more advantages for surface leveling.

GVL is an absolutely environmentally friendly material. Almost completely gypsum fiber consists of natural ingredients. And thanks to this, the ceiling will be safe and the room immediately becomes a favorable microclimate. This greatly affects the general of everyone who is in the room. If the moisture level is high, then the gypsum fiber will absorb it completely, and if necessary, it will give it back.

It is laid on the floor, on the walls and ceiling. Since it retains excellent heat, and does not allow excess noise from the outside to penetrate into your room. Also, masters mount with it. window slopes It does an excellent job of leveling the floor. Its main advantage is a dry screed. And thanks to this, the time of repair work is reduced several times, and the amount of construction waste is reduced.

Even if it was decided to do everything repair work at home on your own, this material is the best suited for beginners. It is easy to install, the laying technology is quickly mastered, it can be combined with additional layers of floor insulation.

The similarity of GVL with drywall lies in the name, the main material is building gypsum. And that is all. It has many features that define its qualities:

when it is created, it is reinforced with loose cellulose. This makes the material strong enough to withstand extreme conditions. And only if you try very hard, cracks will appear on it. But in domestic conditions it is practically impossible;
gypsum fiber sheets are absolutely homogeneous. As a result, it has a high density. Which increases its strength. At the same time, it perfectly retains heat transfer without additional layers of other materials. Also, this density guarantees complete sound insulation;
its composition and uniformity make it possible not to cover it from above with a tightening or fixing element, as with drywall. This property allows you not to cover it with numerous layers of finishes;
due to its unique composition, it is almost impossible to burn it.

Considering that any box is easily made of gypsum fiber, the walls become stronger and not able to ignite, it is impossible to bend it. While drywall is typical. And therefore, if the design has well-fed forms, it will not work.

But if high moisture resistance is required, for example, for floors, GVL will do just fine. To do this, use a special type - moisture resistant. It is laid on the floor in two layers. And then it cannot be broken and the cold will not penetrate into the room. During installation, an absolutely flat ideal surface is created. And the humidity in a room with such a floor can reach as much as 70%. And you need to know exactly how to cut GVL.

Differences between GVL and GKL:

it is customary to use gypsum fiber sheets in those rooms where high impact protection is required, it is much harder than drywall;
due to the homogeneous composition of GVL, it is easy to saw, regardless of direction;
drywall is a flexible material, which is absolutely not characteristic of gypsum fiber;
the environmental friendliness of GVL is much higher than that of drywall. And everything is achieved with its high density. It practically does not break down. While GKL loses its properties over time, dust is formed that can enter the respiratory tract;
drywall is absolutely not suitable for laying on the floor, while GVL is capable of absorbing moisture and retaining heat with such use;
fire resistance is inherent in absolutely all types of gypsum fiber sheets. While drywall does not have this, there is only a special marking with this characteristic;
GVL is absolutely not suitable for wall decoration, if the finish layer is wallpaper, oil paint.

The difference between the materials is such that despite the same basis - building gypsum, their scope is different. When working with GVL, you need to know exactly how to cut it.

Tools for installing GVL at home

For beginners in repair, you should be prepared for the fact that gypsum fiber is still a fragile material. And we must initially figure out the better to cut GVL. And this despite its strength qualities. Therefore, it is better to buy GVL with a margin and after the completion of work, simply return the unused one to the store and return the money for it.

Also, in addition to great patience and a desire to work, you need to find out how to cut GVL sheets. It is worth stocking up on the following special tools. Also, get ready for a big one. handmade. They are sold at any hardware store:

sharp construction knife. Required blade thickness 12 mm. They will need to be changed quite often, because they are quickly flooded, so it is better to buy with a margin;
hacksaw for work with plasterboard, special tool. And according to the assurances of experts, he saws GVL almost climbing dust;
grinder, circular saw. They can be used only when it is possible to easily ventilate the room. At home, this option is unlikely to work. However, with it, sawing sheets is much faster. But if, nevertheless, the choice fell on these tools, do not forget to buy special face protection. Since when it enters the respiratory tract, the dust causes suffocation, settles on the lungs. And then the person will cough it up for a very long time;
jigsaw with vacuum cleaner. This perfect option. To cut GVL, you will need a special saw blade for cutting wood with 4 mm teeth. That's just the dust will also fly in all directions. And with him, too, face protection will be required;
construction pencil and a rule for straight cut lines.

Now that everything is ready to start work, it is worth familiarizing yourself with the process of cutting gypsum fiber.

How to cut GVL at home in stages

Before starting work, remember to be careful, because sharp objects are used and look on the Internet detailed instructions how to cut GVL sheets. If a dust-free sawing option is chosen, then the technology is as follows:

marking is applied to the sheet with a construction pencil;
any perfectly even rail or rule connects the markup;
now you need to gently draw the knife several times so that an incision appears, but do not cut to the end!
a rail is placed in this place;
with a sharp upward movement, it is necessary to gently break the sheet.

Elements for installation are ready. If for some reason the edges at the cut point turned out to be uneven, you can use a carpenter's planer.

Power tools are recommended for cutting sheets when a perfect even cut is needed. For example, in places of slope. However, if a jigsaw is selected, then a rather small consumption of files is obtained. On 10 m², on average, one piece will go. But from circular saw in addition to a huge layer of dust on all surfaces, there is also noise that will not please the neighbors.

Having many advantages, GVL is still a relatively heavy material. Its weight is higher than that of drywall. And therefore, for example, when used for finishing the ceiling, an additional load on the profiles will be created. The base must be strong enough and then there will be no problems.

The price category of gypsum fiber is quite high. Especially if you need specialists moisture resistant or fireproof sheets. When working with it, some difficulties may arise, for example, due to the lack of bending characteristics. It is not suitable for curved and curved surfaces. And it is worth remembering this if such work is supposed to be done in the room.

Gypsum fiber sheets (GVL) are used for finishing work. Of course, in popularity they are significantly inferior to drywall, if only because they were put into mass production much later. For strength and fire safety GVL is significantly superior to drywall. Primary finishing of walls and ceilings, arrangement of bulk floors, construction of protective boxes - these are the main areas of use of this material. Today we will figure out how and how to cut GVL.

Gypsum fiber properties

Gypsum fiber sheets and drywall, which has already become familiar, are united by the fact that both materials are based on building gypsum. GVL features include:

The use of fluff pulp as a reinforcing material.
Homogeneous structure.
No outer cover.
Absolute incombustibility.
Higher density than drywall sheets.

Important! Many companies are engaged in the production of this building material, but the products of the Knauf company are most in demand. If we compare the properties of gypsum plasterboard and gypsum fiber coatings from Knauf, we can see that they serve as an excellent complement to each other. Their use in finishing work guarantees a consistently positive effect.

Important distinguishing feature gypsum fiber is that it cannot be bent, like drywall. Therefore, it cannot be used, for example, for arched structures and other structures of complex configuration.

Gypsum fiber sheets are ideal for arranging a dry floor screed using expanded clay. Here they show their qualities perfectly:

The floor is able to withstand significant loads.
Good thermal insulation.
Perfectly smooth surface.
Ability to withstand up to 70% humidity.

Tools for the job

Sometimes not very experienced home craftsmen believe that gypsum fiber can be cut with the same tools as drywall sheet. However, with this approach, the masters expect unpleasant surprises. Gypsum fiber building material is too fragile when broken, it does not bend. Therefore, willy-nilly, you have to select specific tools:

Construction knife for GVL with a blade thickness of 12 mm. Cutting is not easy, the blades dull quickly enough, so they will have to be changed quite often.
GVL can be cut with a special hacksaw. Using it will help to avoid large dust formation.
Many people ask: is it possible to use a circular saw or a grinder? In principle, this is not forbidden, but on condition that the room is well ventilated. This produces a lot of noise and dust, but there is a chance to get the job done quickly. If you have chosen these particular tools, then you cannot do without a respirator and goggles.
The ideal option for sawing is an electric jigsaw with a built-in vacuum cleaner. However, dust formation cannot be avoided here either, so a respirator and special glasses will also be needed.

Action algorithm

If you decide to cut GVL sheets with a cutter or a hacksaw, the procedure will be as follows:

Mark the sheet, put cut lines on it. Marking lines are useful in order to apply a rule or ruler to them.
Swipe a few times sharp knife along the cut line so as to obtain a furrow from ⅔ of the thickness of the material.
Place a piece of wood under the cut line.
Break the sheet with a sharp but gentle upward motion.

If you did everything right, then the edge edges are smooth, and there are no problems with joining.

Important! For minor adjustments, a peeling planer can be used. For a fold, a shoe cutter or chisel is best suited. With a significant amount of work, you can use a milling cutter.

footage

As you can see, there are many different tools that are suitable for cutting GVL. And you don’t even have to purchase many of them if you have your own arsenal and periodically do some kind of repair work. The main thing, as in any other construction process, is to observe carefully and take into account the properties of the material.