Self-tapping screws on brick without drilling a hole
Sometimes there is a need to fix a dowel in the wall, but halfway through it breaks. Or you do not have the plastic part of the dowel, and to find it at the right time is problematic. In such situations, when you need to fix a screw without a dowel, you can use an uncomplicated but effective method, which you will read about below.
To screw a self-tapping screw into a brick or concrete wall without a dowel, you need some tools. However, there is nothing rare and hard to find. It is necessary to prepare in advance a drill, a drill bit (preferably a quality universal or concrete drill) with a diameter slightly smaller than the self or screw that needs to be screwed in, and a screwdriver.
First, mark the point where that screw or self-drilling screw should be located. Then, take the blade, cut at the point of the wallpaper with intersecting lines. The resulting petals of wallpaper bend. It is necessary to do this in order not to damage the wallpaper. Subsequently, if it will be necessary to remove the screw, this place can be taped again inconspicuously.
Next, you need to drill a hole with a thin drill bit, which is slightly thinner than the screw. Use care to drill straight and well. Do not allow the hole to be larger than necessary size, otherwise the screw will not hold in place.
Into the hole insert a match, which is best pre-dipped in PVA glue. Now you can screw in the screwdriver. But do not use an electric screwdriver. Or use it carefully, at the lowest speed. The fact is that if you screw in a self-tapping screw at high speed, it quickly penetrates the wall and can spin several times, thereby destroying the walls of the hole. Accordingly, and the fastening in this case will be appropriate.
Scrooz Amazing Self Tapping Raptr Screws for Concrete
Now you can hang a picture on the wall, hinged furniture and even some hanging equipment. By the way, this method works best when the walls are strong enough, such as quality brick or concrete slabs. If the wall is easily crumbling, it is better to use another method.
Cut the wallpaper with a blade, bend back the petals. Drill a hole a little deeper and larger in diameter than the self-tapping screw or the screw you want to screw into the wall. Cut to the size of the resulting hole, a wooden chop, which should fit tightly into the hole, not protrude from the outside. Dip the chop into PVA before inserting it into the drilled hole. Hammer in the hole. This method is great for weak walls that for some reason are crumbling. As a result, you will get a wooden section in the wall into which you can screw anything and then hang on a self-tapping screw or screw whatever is really needed.
In order to properly screw in self-tapping screws, you need the proper tools. If you plan to screw in one or two screws, you can make do with a simple Phillips screwdriver. If we are talking about several dozens, let alone hundreds, then you can’t do without an electric screwdriver.
It will make the task easier and simpler. But such an electric screwdriver can do very little by itself. It is necessary to have a serious arsenal of all sorts of nozzles of different configurations.
Choice of products
There are several types of self-tapping screws, which differ from each other in fastening type, material and structure. The choice of one or another name depends on the situation and external influences that have a direct impact on the fastener. Consider the most common types of self-tapping screws and their scope of application.
Self-tapping screws with dowels
Self-drilling screw for foam concrete with a plastic cover
This is the most common type of fastener on the construction market. They come in the form of self-tapping screws with two types of threads and plastic dowels. The presence of dowel is explained by the fact that the drilled hole in the concrete can not provide a tight fit, without which the mount will not be reliable. Plastic cover acts as a seal, which smoothes this circumstance as much as possible.
If you are choosing self-tapping screws for aerated concrete, fixings with dowel is the best option. Given the low density of the foam material, self-tapping screws on aerated concrete without a seal will not be able to provide the proper coefficient of reliability.
Plastic cover, increases the contact area of the screw with the wall, which is especially important in the case of low-density concrete.
There are two types of screws with dowel, which differ from each other thread structure.
- “Herringbone”. Profile “herringbone” is a non-communicating thread, which is fixed in the hole on the principle of nailing on the concrete. Such a self-tapping screw cannot be removed after fixation by unscrewing, which makes disassembly much more difficult. However, they also do not need to be screwed. A few strong blows are enough, which in some cases can greatly simplify the installation process;
- Universal profile. This product looks like an ordinary screw and mounted accordingly. The screw is simply screwed into the dowel, and when removing it, it can be removed by unscrewing it. This type of mounting is somewhat inferior in reliability to the previous name.
Size of screws on concrete are from 3. 6 mm in diameter and from 12 to 220 mm in length of the product. Screws with herringbone thread can be more massive in diameter, but somewhat limited in length.
Self-drilling screws and dowels are inserted into pre-drilled holes, which must match the diameter of the plastic cover. The dowel must fit tightly into the hole and not dangle. Then the fastener itself is driven into it.
Self-tapping screws without dowels
Before you screw the self-tapping screw into the concrete without dowel, you need to drill a hole with a special drill bit with a diameter of 6 mm (diameter dowels is 7.5 mm). Only then screw the screw into the hole with an electric screwdriver. A variable notch expands the cavity, and the upper thread secures the screw.
This type of fastening refers to stationary solutions. Before you screw the screw into the concrete, you must accurately determine its location, because after fixing, unscrewing the fastener will be impossible.
Type of coating
For the most part, self-tapping screws for concrete are made of carbon steel, which is coated with a protective layer to protect against corrosion. The exception is stainless steel screws, but their price is an order of magnitude higher than conventional counterparts.
There are several protective coating options, among which the following should be highlighted:
Galvanized. The zinc layer has a characteristic metallic silver shine. It is the most reliable corrosion-resistant coating available today. These products can be used both inside and outside;
- Copper-plated. Yellow screws are coated with copper or brass. Their use is limited to interior work;
- Oxidized. Black self-tapping screws are blackened, which leads to the formation of an oxide film on their surface, which prevents the formation of rust. They can only be used in environments with normal humidity.
In spite of the triumphant march of electricity in the world no one has canceled the effect of brute physical force, but now, therefore, not uncommon, when screws or self-tapping screws are tightened manually screwdriver. What the heck, I do not like to go down for power tools unnecessarily, when I work at height. When screwing in screws or self-tapping screws by hand the options are almost the same as with a drill, except you don’t burn the drill, but instead of the bit you ruin the screwdriver and can also get a couple of nice calluses. But this has a positive side. Your muscles will be developed, and girls love it, just do not tell them how exactly you pumped muscles.
How to screw in a screwdriver without a screwdriver
The thing is that home masters often do not know how to properly screw in a self-drilling screw and how to choose it competently in general.
How to screw self-tapping screws into different materials?
Many men do not know how to screw a self-tapping screw into concrete, spoil a sufficient number of purchased parts. In fact, everything is quite simple: self-tapping screws are “integrated” into concrete with the help of dowels. Durable plastic “tubes”. First, a hole is made in the material, dowel is installed there, which “takes” the fixing product.
It is worth knowing! Folk craftsmen advise to lubricate the dowels with glue before installing. This, in their opinion, strengthens the joints.
Drill holes in concrete should only be used with a peorator. Even an impact drill can not stand, let alone an ordinary one. Self-tapping screws are suitable for both wood and universal screws.
In these media self-tapping screws are screwed in exactly the same way as in concrete. The only thing for working with tiles is to use a regular drill, because it can break from the excessive power of the torch.
Ruslan Naibulin. How to screw in 100mm screwdriver video lesson and tips.
Measure the diameter of the rod of the fastener without taking into account the thread. This manipulation should be performed with a caliper. Set the pointed jaws perpendicular to the self-drilling screw and clamp the item so that they fully penetrate into the thread groove; determine the diameter. Make a hole in the material with a drill diameter that is a millimeter and a half less than the determined value. Screw the self-tapping screw into the hole. And the work is done. Parts with universal threads.
Notice! Before you “pierce” the main structure, it is recommended to test the drill on a small unnecessary piece of similar material. Drill a hole and try to screw the product there. The drill is considered correct if the screw passes into the hole tightly enough, but does not jam. In the case if the screw fails to “break through”, you should work with a thicker drill. But too easy to screw in the detail symbolizes that you need to take a drill thinner. Otherwise the screw can at any time pop out.
The hole in the material should be equal to or slightly larger than the diameter of the rod without threads. With a number of hard metals, self-tapping screws can not cope. In particular, to screw these fasteners in cast iron is almost unreal.
Not every plastic is ready to take a screwdriver, so make sure before you start that the material is exactly right, it will not be superfluous. The technology for driving a self-tapping screw in plastic is the same as for soft metals, such as copper, aluminium or bronze. The recommended products are wood screws.
You do not know how to screw a screw into a board? Trust me, nothing is easier. The basic rule is to only use wood screws. For hardwood, thin boards, chipboard, fiberboard pre-drilling the hole for the product is mandatory, since there is a risk of splitting the material with the screw. For thick softwood boards, you can do without this manipulation.
How to unscrew wood screws WITHOUT a drill, electric screwdriver, or screwdriver. WITHOUT TOOLS.
- With hardwood. Choose a drill bit with a diameter equal to the diameter of the core of the screw (without threads, of course);
- With fiberboard. 1 millimeter less;
- With Particleboard or soft wood. 2-3 millimeters less.
Mark the points on the board with a pencil. The optimal step between the screws. Up to 70 centimeters, depending on the expected loads on the structure. If you are using an electric screwdriver, you can start screwing in the product at maximum speed. After the screw has penetrated ½ of the surface, it is recommended that you gradually reduce the speed to a minimum. When screwing with an ordinary screwdriver, all movements should be smooth. It is very important to screw in the screw properly. Ideally it should be 1 millimeter below the level of the cardboard, not the plaster! This will ensure maximum strength of the future construction. If you suddenly did not comply with the technology and cut through the cardboard, the “unfortunate” place needs to be puttyed, and a new fastener to place at a distance of 5-9 inches from it.
The type of self-tapping screws for drywall must be chosen according to the material used for the installation of the purlins. For metal framing, you need universal screws or screws for metal, for wooden crates. Wood products.
Tools for screwing screws
Fasteners can have different sized heads and different shaped and sized cavities in them. So before you screw in a screwdriver, make sure that your arsenal is present screwdriver or screwdriver with a suitable nozzle. And in general it is better to have, as they say, the maximum of nozzles for the relevant tools. Plus, they should be replaced regularly, because wear and tear on the hardware is inevitable.
Take note! The best tips are those made of tool steel with strengthening additives. Do not stop your choice at the first available set, otherwise after a couple of days of intensive work you will have to go for a new.
If you plan to screw one or two self-tapping screws into an unstable surface, you can work with a screwdriver. If it is more. You can not do without an electric screwdriver. Screwing screws with a screwdriver is not as simple an operation as it may seem at first glance, and requires a certain amount of skill. And an electric screwdriver will do everything quickly and efficiently.
Types of self-tapping screws
There are two main types of self-tapping screws used in self-repair. For wood and universal. Their main difference in the pitch of the thread. “screws” for wood are characterized by a larger pitch (less frequent application of thread turns).
There is a misconception that universal parts are also good for wood, plywood and particle board, as are specialized. No, of course, to screw them into these materials is not difficult, but how well they will hold up there is a big question. The thing is that the “raw material” in which a screw should “sink”, should fit reliably into the grooves of the thread, and the structure of wood will not allow it to settle qualitatively in narrow “grooves” of a universal screw.
There are ways to do this kind of work
When screwing a long screw into the wood quite often breaks off the cap. Also the splines on the bit or screwdriver can come off. Many would say that it is easier to pre-drill a hole for a screw, but such an option is not always available. Often a drill of the right length and diameter is not handy. And that’s where the tricks of home masters come in to help cope with such a problem.
Such a long drill bit is seldom handy
Option: use machine oil
This method has the right to exist, but only partially. The thing is, regular oil won’t solve the problem. The only thing that can help with this approach is grease or lithol. And that’s on the condition that the attachment point is concealed. The fact is that even if the cap after screwing in will be thoroughly wiped, over time around the screw inside the wood will begin to char, darken, and the grease will seep. It will lead to the fact that the paint at the location of the screw will swell. When wallpapering it may get darker and the grease may come out.
If it does not go in, you can lubricate with solidol, but it is not desirable
Option: soap to help the master
A good way to screw a long screw into the wood without drilling. You just need to rub the thread with soap or dip it in a thick soap solution. After that, the self-tapping screw can go in much easier. But there is a problem, too.
Soap contains caustic soda (especially a lot of it in the household soap), which reacts with alloy steel, contributing to the development of corrosion. Of course the process is not fast, but in a few years the rust will do its work. In any case, if the screw is tightened “dry”, after 2-3 years it can be easily unscrewed, but when installed with soap this will be a problem
Common mistakes when using self drilling screws (European Handypeople)
Therefore apply this method should be used with caution, first thinking carefully
Soap perfectly helps to screw in the screw, but later problems may arise
How to properly screw a self-tapping screw into different materials
Perhaps the method of installation in concrete is now known to everyone: first you should install a dowel in it, and then you need to screw the screw itself into this already installed dowel. According to many craftsmen, fixing reliability increases significantly if the surface of the dowel is smeared with appropriate glue.
For drilling holes, it is best to use a peorator, the rules for selecting which we have already written about earlier. Installing self-tapping screws on dowels, you can use both universal products, and on wood.
Ceramic tiles and bricks
If you need to screw a screw in a brick or ceramic tile, you should do the same thing as with concrete. But it is better to use a drill to drill the holes.
Soft nonferrous metals
To fixing in such metals was reliable, before screwing the product in them should be drilled a hole very small diameter, smaller than the diameter of the screw. Screwing it in is done without any special wizardry. The only important point is that you should only use products of the universal type.
The diameter of the pre-drilled hole in such material should be equal to the diameter of the universal self-drilling screw without taking into account its thread or slightly exceed it. But some hard metals like cast iron are just too hard for screws.
Self-tapping screws are not suitable for all types of plastic, some of its varieties when screwed in can simply collapse. If you are absolutely sure that your plastic product does not belong to their number, then you should apply in this case the same technology that was described above for soft metals, using self-tapping screws for wood.
Wood and wood boards
Naturally you should use self-tapping screws for wood again in this case. If they are screwed into thin boards or panels, as well as in hard wood, a thin receiving hole must be drilled beforehand. It is easiest to work with thick boards made of soft wood: no wizardry is needed for this.
Drywall is a material, screwing screws into which involves a large number of different nuances. Among the main ones are:
- The optimal step of screwing in this fastener is considered a distance of about 70 cm;
- Using an electric screwdriver, you should start with the maximum speed immediately, gradually reducing it as you go deeper into the screw;
- Working with an ordinary screwdriver, it is necessary to monitor the smoothness and restraint of movements;
- Cap screwed screws should nestle cardboard surface of the sheet without breaking it. This condition is a guarantee of maximum strength of the future construction;
- If the surface of the sheet was torn, the screw should be removed, the hole putty and pick up a new place to install the fastener at a distance of about 5-9 cm.
Working with gypsum board, the type of screw is chosen based on the material of the supporting battens. If it is wooden, then self-tapping screws for wood are used, if it is metal. Then the universal.
So, we have acquainted you with the basic rules that allow you to screw a screw into any metal so as to ensure maximum reliability of your designs. We hope that our recommendations will allow you to exclude any defect and make any repair the way you have planned it initially.
How to repair the hole for dowel?
We cut the repair cloth to the right size, then vacuum the dust and remove the hole and slightly moisten it (with a sprayer). Wet the cloth with water and wrap it around the dowel, insert the dowel into the hole. After 3-4 minutes the cloth will harden and you can screw the screw (or self-drilling screw) into the dowel.
If the plastic is deformed or cracked, then you need to use a drill. Find a drill bit with a smaller diameter than the self-drilling screw, drill a hole and screw in the screw. For exact drilling we core the plastic, set the rpm of the electric screwdriver to medium, and drill.
Self-tapping screw on concrete is used to attach metal, plastic, wood and concrete structures. On the self-tapping screw without drilling, you can hang various items or make small repairs in the room using these parts to form a connection.
If such fasteners are used in heavy concrete, it is necessary to make additional preparation of the intended place, before inserting the screw. Self-tapping screws can be screwed into lightweight concrete without a dowel. The special drill bit should be selected for heavy concrete.
How to use the fastener on a solid base
To screw screws in concrete in dense substrates, a hole is drilled on the surface of the wall, the size of which is selected taking into account the parameters of the fastener. The size of the hole should be a few mm more to prevent the accumulation of concrete. It is important when screwing in this fastener to make sure that the axis does not deviate. The fastener should be screwed in at low speed.
If there is no special equipment, then any drill will do, most importantly, choose the right size and use a hammer. To do this, the drill bit is placed perpendicular to the flat and gradually driven in with a hammer, each time turning the drill bit clockwise.
How to screw in a self-tapping screw without drilling
Not every builder knows how to screw a self-tapping screw into concrete without drilling. Drill a hole in the walls of expanded clay aggregate concrete or aerated concrete is not necessary. Just as you do not need an extra prepared hole.
For installation in such walls, screws with dowel are often used. The sealant is made of cellophane, nylon and polypropylene. When the fastener is screwed in, the material begins to delaminate and make tight contact with the wall.
But this type of attachment needs a prepared hole with a drill, the drill bit of which is selected taking into account the sealant. The screw can be screwed in with a standard screwdriver.
How to screw in a screw
Today it is impossible to do without fasteners in construction. They allow you to connect different building materials, hang objects, reinforce certain structures, etc. One of the most common fasteners is a screw. This product has an male thread and a head. The thread is relatively sharp, so that in some materials it can thread itself internally. In this article I will show you how to screw a screw into a variety of materials. But first let’s understand the classification of these products.
This fastener is made of different materials, such as brass, stainless steel and carbon steel. Also, self-tapping screws have different coatings, such as:
Use of one or another screw depends on the density of the material that you plan to mount. Therefore, before you buy this product, you need to decide on the following:
- The conditions of use of the connection.
- Whether it is necessary to drill a hole before screwing.
- In what material should it be screwed.
- What material will be fastened.
Already on the basis of this, you make the appropriate choice, whether it will be a self-tapping screw for metal, wood or for concrete.
The main difference between self-tapping screws for wood. Rare threads, unlike their counterparts designed for metal. Such fasteners can be black, gold and white. So, if you want to screw a golden hinge on the door, then accordingly choose a golden self-tapping screw. In most cases, however, the choice falls on the black self-tapping screw.
As already mentioned, the thread on such a self-tapping screw has a frequent pitch. This is due to the fact that metal is quite hard material, so the grip must be made strong. Over, some metals should not be pre-drilled, such as tinplate. As for thicker metals, you will need to make a hole.
Such screws are used to secure roofing sheet metal. It is necessarily equipped with a sealing rubber. As a result, the connection, in addition to strength, becomes airtight.
Furniture screws or screws
This type of screw requires pre-drilling a hole in the furniture piece. To screw it in, use a hexagonal wrench.
These are probably the most common types of screws that are used in various areas of construction. Let’s look at the details of how to screw this or that self-tapping screw into different surfaces.
Into the drywall
When finishing the ceiling and walls, drywall is often used. And given that this material is relatively fragile, it is important to be careful when screwing a screw into it. So, to screw a screw into drywall requires an electric screwdriver with a nozzle or a Phillips screwdriver.
Much depends on what purpose will be screwed into the drywall. For example, if you need to hang a small object, you must first insert a special dowel, which, when screwing screws, forms a secure attachment. If you need to screw the screw directly into the drywall, for example, fixing it to the profile, the technology is as follows:
- Mark out the drywall on the drywall. Depending on the possible load step between the fasteners can be from 20 to 70 cm.
- Then you put the screwdriver or a screwdriver attachment on the screwdriver and put it to the point.
- After you start to screw it in. If you use an electric screwdriver, do not turn it too fast. Otherwise, there is a risk of screwing the screw and it will not hold anything. This also applies to work with a screwdriver. Do not put any pressure on it. The screw has a thread that will allow you to screw it into the drywall without much effort.
- It is important to finish screwing so as not to break the upper layer of cardboard. For example, if you fasten the drywall to the profile, the screw can simply fall through the cardboard with great effort. The head of the screw should press the upper layer of the cardboard slightly. But do not leave it under-tightened. Otherwise you will have problems with puttying.
The diagram shows the correct and incorrect tightening:
Scheme of correct and incorrect screwing of screws
After screwing the head of the fastener should be 1 mm below the general level of the surface. This will ensure sufficient tension.
What to do if you did not succeed in tightening the screwdriver and it broke through the cardboard? In this case, unscrew it back, fill the hole and screw in a new self-tapping screw at a distance of 50-80 mm.
As for the type of screw, its choice depends on the material used for the crate whether it is wood or metal. In terms of length it is sufficient that it fits into the profile up to 10mm.