How to saw GFB without dust

How to cut GFB sheets at home criteria

In finishing works, they often use gypsum fiber board, or GFB. This material was created much later than gypsum board, so it has not gained such wide popularity, as GPB.

However, thanks to a special composition, these boards have outstanding strength and firefighting characteristics with indicators much higher than that of gypsum board.

So GFB is indispensable for the device bulk floors, rough finishing of walls and ceilings, as well as the construction of all kinds of boxes. The only question that arises when working with this building material. how to cut the GFB from “Knauf”.

Advantages of GFB

To answer our question, we need to understand what this material is. Gypsum fiber boards, like gypsum plasterboard, are made from the building material gypsum. But that’s where the similarity ends. The main features of GFB are:

  • Reinforcing with dissolved cellulose.
  • Complete homogeneity of the material.
  • Lack of top coating.
  • Non-combustibility.
  • High density.

Many manufacturers are engaged in the production of this building material, but the most popular is produced by Knauf GFB called “Superleaf. If you continue to compare gypsum fiberboard with gypsum plasterboard of the same company, you can see that they complement each other perfectly. And the use of these materials in finishing works at the same time will only benefit the repair.

Despite the fact that any box can be made of GFB, and the walls will be durable and non-combustible, nevertheless this material can not be bent, like gypsum board. Which means that for the installation of complex structures with rounded shapes, it is not suitable.

But the gypsum fiber boards are unrivaled in dry screeds with expanded clay (KNAUF-superfloor technology). Using them in the construction of the roughing floor will give guaranteed positive results. Floor elements glued together from two sheets of gypsum-fiber board with a total thickness of 20 mm have the following useful properties:

  • They do not break.
  • Do not let the cold in.
  • They create a perfectly smooth surface.
  • Moisture-resistant gypsum fiber boards can withstand humidity up to 70%.

ROM INFO: How to make your hardwood floors not creak?

The tools you need for working with drywall

Many people who have independently prepared for installation and installed drywall, mistakenly believe that the same way they work with GFB. But here they are in for an unpleasant surprise. Gypsum fiberboard sheets, for all their strength qualities, when taken to the break, turn out to be brittle and break easily. By the way, that’s why they can’t be bent, like gypsum board.

Tools used to cut gypsum fiber sheets at home:

  • A sharp 12 mm or thicker construction knife. Blades must be replaced often, because they blunt quickly.
  • A special hacksaw for gypsum board, which can saw this material almost dust free.

Some craftsmen say that it is convenient to cut fiberboard with a special cutter, which is used by cobblers.

  • An angle grinder or circular saw is used only in well ventilated room and on condition that the aim justifies the means. This is the fastest way and very dusty at the same time. If you decide to choose this method, you must wear respiratory and eye protection.
  • An electric jigsaw with a built-in vacuum cleaner is ideal if you use a saw with a 4 mm toothing pitch. But there will still be a lot of dust, so you should wear goggles and a respirator.

The process of cutting fiberboard

With any method of sawing, you must remember to be careful and cautious when handling fiberboard. If it is decided to use cutters or a special hacksaw for the work, then proceed as follows:

  • On a sheet of GFB we do a necessary marking.
  • To the line of demarcation we put a straight rail. You can also use a rule.
  • We pass as many times with a knife as it is necessary, so that the depth of the notch is not less than 2/3 of the sheet thickness.
  • We put the lath under the line for the notch trimmer.
  • With a sharp upward movement it is gently nadremlyaiv.

Before you make a cut, it is better to watch an additional video on how to properly cut a sheet.

In GFB even edge edges and docking problems usually do not happen. But if for some reasons it becomes necessary to make a small trim, the roughing planer is suitable for this purpose.

But a rebate can best be made with a boot cutter or a chisel. For a large volume you can use a milling machine. The groove cutter in 3-4 mm will allow to carry out necessary works in 2-3 passes.

With what and how to cut GFB in domestic conditions Advice of Builders on DomoStr0y.ru

Gypsum fiberboard, or GFB, is heavily used in interior construction. This material was created later than gypsum board, so it has not yet managed to become so popular. Gypsum fiberboards have a special composition that gives them entirely new characteristics of strength and resistance to fire, exceeding several times the GKL. GFB is considered an indispensable material for the creation of bulk floors, the initial decoration of walls, ceilings, as well as in the construction of a variety of boxes.

When working with such a valuable material there is only one important question. how to cut GFB?

Features of gypsum fiberboard sheets

To understand what and how one should cut gypsum fiberboard, you should first understand the essence of this material. The production of gypsum-fiber sheets, like gypsum plasterboard, is carried out from construction gypsum, which limits their similarity. Plasterboard The gypsum-fiber board is characterized by such features:

  • As a reinforcing material dissolved cellulose is used,
  • The material is characterized by an absolutely homogeneous structure,
  • No coating is used on top,
  • The material is absolutely non-combustible,
  • The density of the material is higher than that of traditional drywall.

This building material is produced by many companies, but deserved the greatest demand sheets, which are made by the company Knauf. If you take gypsum board and gypsum fiberboard sheets of this company for comparison, you can understand how perfect complement to each other they are, and when using them as finishing materials in the repair process can only have a positive effect.

dust

While GFB is an excellent material to make any box, and the walls will be strong and almost impossible to ignite, this material is different in that it can not be bent like plasterboard. It turns out that it is not suitable for the installation of structures with rounded shapes and complex elements.

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The use of gypsum fiber board is advisable on the floor, in dry screeds, where there is claydite, where they show all their best qualities. When using them in the process of constructing a rough floor, you can get an excellent result. The elements of the floor, obtained by bonding a pair of sheets of gypsum fiberboard with a total thickness of 20 mm, have such useful properties:

  • They are resistant to stress, that is, they do not break during use,
  • Resist the penetration of the cold,
  • Perfect surface smoothness,
  • GFB can withstand humidity up to 70%.

What is required for working with GFB?

Usually, craftsmen who perform the preparation and installation of gypsum plasterboard themselves, think that the work with GFB is carried out in a similar way.

But this is where they can get into trouble. For all their strength characteristics, gypsum fiberboard is very brittle, so it breaks easily. That is why the GFB sheets are not bent like gypsum fiberboard.

Before you cut GFB, you need to understand what tools are suitable for this purpose?

So, the tools with which you can cut GFB:

  • A sharp construction knife with a thickness of at least 12 mm. Due to the fact that the blades will blunt quickly, they will need to be replaced often.
  • There is a special hacksaw for gypsum board, which can be used to saw the material with almost no dust.
  • The use of an angle grinder or circular saw is appropriate only in well-ventilated rooms, unless the goal really justifies the means.

Once you decide what to saw for GFB, you must take care about caution and accuracy when working with these materials. When using a special hacksaw or cutter for work, it is recommended to proceed as follows:

  • GFB sheet is marked as it needs to be cut,
  • Line for trimmer marking is used in order to attach a rule or a level ruler,
  • It is necessary to move the knife so many times on the sheet to form a groove with a depth of at least 2/3 of the sheet thickness,

Beware of Counterfeit / Fake GFB Products!

You can watch the corresponding video before you start cutting.

Plasterboard is characterized by the formation of even edge edges, so there are usually no problems with the joint. If minor trimming is required, you can resort to the help of a planer. A chisel or a shoemaker-cutter is best suited for making a groove. If the amount of work is quite large, it is recommended to use a router. When using a groove cutter with a pitch of 3-4 mm can be made in 2-3 approaches to produce all the necessary work.

How to cut wood without a chainsaw with minimal labor costs

For a long time I was not very worried about infestation of apple trees with bark beetle. It is clear that it is bad, but loved ones would not understand that I am uprooting fruit-bearing apple trees because of a few holes in the trunk. That’s why nobody touched the apple trees. But this year there were almost no apples, so I decided to renew the orchard.

Nothing complicated wouldn’t be if I had a chainsaw. When I imagine having to saw four trees with my handsI’d rather not think about it! Better to think about what you can use instead of a saw, that’s our way!

What did these thoughts lead to.

For starters, I started going through the tools available: jigsaw. can’t, will break; electric hacksaw. not recommended either; drill. but a drill will do! Rather grabbed the drill, the carrier and went to the garden.

The idea is simple: you can drill a lot of holes in the trunk (it’s like sawing, only from inside), and then help yourself a little with a folding hacksaw.

Here we go! Let’s rinse the trunk in all possible directions.

Now let’s wiggle, in case we have already drilled enough)

nightmare, and it’s called “gardening”! He’s happy as a child to bring down his own tree! What’s the world coming to?

Now we have to treat the trunk with urea to make it rot faster. For this you need to drill more holes in the trunk and fill them with urea, so that the wood will rot faster.

After each hole, you have to blow out the sawdust, or later it will be impossible to find it and fill it with urea.

This is now my bag of what’s-his-name, car-ba-mide! I hope Mistress won’t need it. Okay, Cloudy, give me the bag!

I had to promise her a trip to the home theater to see “The Irony of Fate

Kino Tucha respects, the bag of urea was reclaimed.

I poured it without a toad and used my boot to smooth it out

The differences between GFB and gypsum board:

The difference between the materials is that despite the same basis. construction gypsum, the scope of their application is different. When working with GFB, you need to know exactly how to saw it.

Sawing down a Knauf super sheet of gypsum fiberglass

The option of cutting with a hand tool, such as a knife or a cutter is used most often. The power tool will dust. With a small amount of work, you can do with simple devices.

Sequence of work:

  • lay the sheet on a flat plane, you can cut the top sheet on the package without removing it;
  • The marking is put on the panel, a rule is put along the line and it is pressed well;
  • along the line with force cut several times, trying to plunge the blade evenly;
  • Under the line for the trimmer of the cut is placed a bar;
  • The edge of the board is lifted, broken along the line, dividing it into parts.

If you want to make a rebate on a straight edge, use a knife-cutter or chisel. On large volumes work with a router with a slot cutter of 4 mm. To fit the pieces of GFB on the spot, use an edging planer.

Description of the material

Produce products that create a rigid coating only in dry areas and material that works in wet conditions. In both cases, the panels are not destroyed by sunlight, atmospheric chemistry.

Produce types of gypsum fiber boards:

Moisture-resistant version is put in production shops, where there are processes with the emission of wet vapors, and sanitary treatment is allowed. The introduction of hydrophobic additives into the gypsum mass allows its use in bathrooms, residential and public kitchens.

Read more:  How to Cut Concrete Without Dust

When installing without framing, high-quality gypsum adhesive or cement-based dry adhesive mixes are required

This finishing material was created later than gypsum board, so it does not have its disadvantages, but gained many advantages. The first advantage over gypsum board is its higher durability and longer service life as a leveling layer.

  • Drywall has many types of beveled edges, which are designed to seal seams, but straight sides do not. There are different types of GFB: PC. straight edges and FC. a type of the rebated edge.
  • Gypsum plasterboard is put on a framework without gaps between them, and the GFB panels are placed with a gap of 5. 7 mm (for convenience of sealing the joint).
  • Studs under the GPB are mounted with an interval of 600 mm, and the vertical elements of purlins under gypsum boards. with an interval of 603 mm, so as to be able to form a gap between the sheets.
  • When installing the two-layer covering of the walls, fix gypsum boards of the first and second tier in the profile with self-drilling screws. GFB allow fixing screws not only in the racks, but also in the panels of the previous layer.
  • Gypsum board is not put on the floor as a roughing layer, t. к. It has not enough strength, and the GFB can withstand operating loads in the room.

When installing moisture-resistant gypsum fiber boards, a 5 mm installation gap is left between the ceiling and the wall. They are jointed with the floor with a gap of 10. 12 mm. Screws are twisted at an angle of 90 °, they go 1 cm deep in the profile.

Install the material face outward, it can be determined by the even surface without rough edges. On the underside is a marking of letters and numbers. On the face there is a marking for drilling with self-tapping screws in the form of dots.

What and how to cut GFB in the home

Gypsum fiberboard or GFB is actively used in the production of works related to finishing. This material was created later than gypsum board, so it has not yet managed to become so popular. Gypsum fiberboard has a special composition, which provides them with entirely new characteristics of strength and resistance to fire, exceeding the GFB several times. GFB is considered an indispensable material for the creation of bulk floors, the initial decoration of walls, ceilings, as well as in the construction of a variety of boxes.

In the process of working with such a valuable material, there is only one important question. how to cut GFB?

Features of gypsum fiber sheets

To understand what and how one should cut gypsum fiberboard, it is necessary first to understand the essence of this material. The production of gypsum fiber boards, like gypsum plasterboard, is carried out from gypsum construction, which limits their similarity. Plasterboard Plasterboard is characterized by such features:

  • Melted cellulose is used as a reinforcing material,
  • The material is characterized by an absolutely homogeneous structure,
  • No top coat is used,
  • The material is absolutely non-combustible,
  • The density of the material is higher than that of traditional drywall.

This building material is produced by many companies, but deserved the greatest demand sheets, which are made by the company Knauf. If we take to compare the gypsum plasterboard and gypsum fiberboard sheets of this company, you can understand how they are an ideal complement to each other, and when using them as finishing materials in the repair process can only have a positive effect.

While GFB is an excellent material for performing any box, and the walls will be strong and almost impossible to ignite, this material is different in that it can not be bent in the same way as plasterboard. It turns out that it is not suitable for mounting structures with rounded shapes and complex elements.

The use of gypsum fiber board is appropriate on the floor, in dry screeds, where there is claydite, where they show all their best qualities. When using them in the process of constructing a subfloor, you can get an excellent result. In the elements of the floor, obtained by bonding a pair of sheets of gypsum fiber board with a total thickness of 20 mm, have these useful properties:

  • They are resistant to load, that is, do not break in the process of operation,
  • Resist the penetration of the cold,
  • Perfect smoothness of the surface,
  • GFB are able to withstand humidity up to 70%.

What is required to work with GFB?

Usually, craftsmen who perform the preparation and installation of gypsum board themselves, believe that the work with GFB is carried out in a similar way.

However, here they can expect quite certain trouble. For all their strength characteristics, gypsum fiberboard sheets are very brittle at breaking, so they break easily. For this reason, the GFB sheets are not bent like gypsum board.

Before you cut GFB, you need to know what tools are available for this purpose?

So, the tools that can cut GFB:

  • A sharp construction knife with a thickness of at least 12 mm. Because the blades will blunt quickly, they will need to be replaced often.
  • There is a special hacksaw for GPB, which can be used to saw the material with little or no dust.
  • The use of an angle grinder or circular saw is only reasonable in well-ventilated rooms, unless the end really justifies the means. This is a very noisy and dusty method, but of all it is the fastest. If you decide to choose such a tool, be sure to use respiratory and eye protection.
  • An electric jigsaw with a built-in vacuum cleaner is the most ideal option, especially when using a wood saw with a 4 mm tooth pitch. However, even in this case, dust is generated quite a lot, which requires the use of a respirator and safety glasses.

After you decide what to saw GFB, it is imperative to take care and care when working with these materials. When using a special hacksaw or cutter for the work it is recommended to proceed as follows:

  • The GFB sheet is marked as it is to be cut,
  • A fishing line for trimmer marking is used to put a rule or a straight ruler on it,
  • The knife is required to spend on the sheet as many times, so that it formed a groove with a depth of at least 2/3 of the thickness of the sheet,
  • A special batten should be placed under the formed line for the trimmer cut,
  • Then by means of a sharp upward movement it is necessary to gently break the sheet.

You can watch the appropriate video before you start cutting.

Gypsum fiberboard sheets are characterized by the formation of even edge edges, so there are usually no problems with the joint. If you need a small trim, you can resort to the help of a roughing planer. To obtain the rebate is best suited chisel or shoemaker knife-cutter. If the amount of work is quite large, it is recommended to use a milling machine. When using a slot cutter with a pitch of 3-4 mm can be made in 2-3 approaches to produce all the necessary work.

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What and how to cut GFB in the home

Gypsum fiberboard or GFB is actively used in the production of works related to finishing. This material was created later than gypsum board, so it has not yet managed to become so popular. Gypsum fiberboard has a special composition that gives it a whole new strength and resistance to fire, several times higher than that of gypsum plasterboard. GFB is considered an indispensable material in the creation of bulk floors, the initial finishing of walls, ceilings, as well as in the construction of a variety of boxes.

When working with such a valuable material, there is only one important question. how to cut gypsum fiberboard?

Features of gypsum-fiber sheets

To understand what and how to cut gypsum fiberboard, you must first understand the essence of this material itself. Gypsum fiber board, like gypsum plasterboard, is produced from gypsum construction, which limits their similarity. Plasterboard gypsum fiber board has these features:

  • As a reinforcing material dissolved cellulose is used,
  • The material is characterized by an absolutely homogeneous structure,
  • No coating is used on top,
  • The material is absolutely non-combustible,
  • The density of the material is higher than that of traditional drywall.
dust

This building material is produced by many companies, but deserved the greatest demand sheets, which are made by Knauf. If you take to compare the gypsum board and gypsum fiberboard sheets of this company, you can understand how perfect complement to each other they are, and when using them as finishing materials in the process of repair, you can only get a positive effect.

While GFB is an excellent material for making any box, and the walls will be strong and virtually impossible to ignite, this material is different in that it can not be bent in the same way as plasterboard. It turns out that it is not suitable for mounting structures with rounded shapes and complex elements.

The use of gypsum fiber board is appropriate on the floor, in dry screeds, where there is claydite, where they show all their best qualities. When they are used in the process of constructing a subfloor, you can get excellent results. The floor elements obtained by bonding a pair of sheets of gypsum-fiber board with a total thickness of 20 mm, there are such useful properties:

  • They are resistant to stress, that is, do not break during operation,
  • Resist the penetration of the cold,
  • Perfect smoothness of the surface,
  • GFB can withstand humidity up to 70%.

What is required to work with GFB?

Usually, craftsmen who independently perform the preparation and installation of drywall, believe that the work with GFB is done in a similar way.

However, here they can get into some real trouble. For all their strength characteristics, gypsum fiber boards are very brittle at breaking, so they break easily. For this reason, the GFB sheets do not bend like plasterboard.

Before you cut GFB, you need to understand what tools are suitable for this?

So, the tools that can cut GFB:

  • A sharp construction knife, with a thickness of at least 12 mm. Due to the fact that the blades will quickly blunt, they will need to be replaced often.
  • There is a special hacksaw for gypsum board, which can be used to cut the material with almost no dust.
  • An angle grinder or circular saw is only sensible in well ventilated rooms if the end really justifies the means. This method is very noisy and dusty, but of all it is the fastest. If you decide to opt for such a tool, be sure to use respiratory and eye protection.
  • A jigsaw with a built in dust extractor is the ideal choice, especially when using a 4 mm saw blade with a tooth pitch. However, even in this case, dust is generated quite a lot, which requires the use of a respirator and safety glasses.

Once you have decided what to saw GFB with, you must take care about caution and accuracy when working with these materials. When using a special hacksaw or cutter for work, it is recommended to proceed as follows:

  • The GFB sheet is marked as it is to be cut,
  • A line for the marking trimmer is used to attach a rule or straight ruler,
  • It is necessary to move the knife so many times on the sheet to form a groove with a depth of at least 2/3 of the thickness of the sheet,
  • A special batten should be placed under the cut trimmer line that has been formed,
  • Next, by means of a sharp upward movement it is necessary to carefully break the sheet.

GFB DV blow off valve

You can watch the appropriate video before you start cutting.

Plasterboard is characterized by the formation of even edge edges, so there are usually no problems with the joint. If minor adjustments are required, you can resort to the help of a planer. A chisel or a shoemaker-cutter is best for obtaining a rebate. If the amount of work is quite large, it is recommended to use a router. When using a slot cutter with a step of 3-4 mm can be for 2-3 steps to make all necessary works.

The process of cutting gypsum fiberboard

With any method of cutting, it is necessary to remember about the accuracy and caution when handling gypsum fiberboard. If it is decided to use cutters or a special hacksaw, then proceed as follows:

  • We make necessary marks on the GFB sheet.
  • Using a straight edge against the line of demarcation. You can also use a rule.
  • Run the knife as many times as necessary, so that the depth of cut is at least 2/3 of the sheet thickness.
  • Place the lath under the trimmer notch.
  • With a sharp upward movement, gently break it.

Before making the cut, it is better to see an additional video on how to properly cut the sheet.

GFB has smooth edges and there are usually no problems with the jointing. But if for various reasons it becomes necessary to make a small adjustment, the roughing planer is suitable for this purpose.

And the rebate is best done with a boot cutter or chisel knife. At a large volume you can use a milling machine. A 3-4 mm groove cutter will allow you to perform the necessary work in 2-3 passes.