Hello, I am interested in the issue of installing wooden lining on a metal profile. Is it possible to fasten the lining with self-tapping screws? Or are there other mounting methods (profile for GP)?
Dmitry, Ukraine.
Hello, Dmitry from Ukraine!
You must have some kind of non-standard situation if the question concerns the installation of lining on a metal profile of the GP type.
It’s clear when a wooden one is mounted on wooden cranial bars, or on a mounting profile (also metal made of galvanized or aluminum) in the form of slats. Which in turn are attached to the wall or ceiling.
A metal profile of the GP type (GP-8, GP-12, etc.) is a sheet whose end resembles a trapezoidal contour with wide flanges and a narrow bottom, a shelf height of 8, 12, etc. millimeters. Or the GP-20 D, which, on the contrary, has small width mushrooms and a large bottom width.
Accordingly, the same GP-8 is used for fencing the facade surfaces of buildings, indoors, and sometimes for the construction of fences. A GP-20 D for roofing.
If you would like to attach wooden lining To metal profile, it is clear that it is impossible to do this with nails, since, having pierced the lining, the nail will rest against the metal and not every nail is capable of piercing galvanized steel of standard thickness. It will simply bend if it is galvanized finish, and not ordinary steel with a diameter of three millimeters. But, with rare exceptions, they don’t fasten the lining like this.
Theoretically, it is possible to sew the lining onto the GP profile using self-tapping screws, preferably with metal screws, which have a finer knurling (pitch) of thread. Such screws will hold more firmly, unlike wood screws. Self-tapping screws are either black or galvanized with a press washer (which is made integral with the screw, and not separately). Roofing screws should be used with caution, as they can turn the lining with their self-tapping edges.
But this is a labor-intensive method; more often, a method is used when a wooden plank or block is first mounted on a metal profile with several screws, and then the lining itself is nailed directly to this plank-block. This will make your life easier, since you won’t have to fasten each panel with screws directly to the metal.
/If the lining will be exposed to moisture, for example, it is a fence on the street, then self-tapping screws are much preferable to nails, which can be torn out when wet boards warp./
Two more points. Do not forget about the relative position of the lining and the metal profile. The lining must be directed perpendicular to the direction of the profile waves. Then you will clearly hit the fasteners on the top of the profile waves, and not just anywhere. /If you first attach the wooden planks-bars, which were discussed above, then both the metal profile and the lining will be located in the same direction./
In addition, it is always very desirable to have a layer of film between metal and wood to waterproof one from the other. This can be glassine, moisture, thermal protective film and all films for similar purposes.
Do not forget that the sharp ends of the screws will stick out from the other side of the metal profile. It's one thing if it doesn't affect anything. Another thing is that if it is visible from the outside of the building, this disgrace will have to be covered.
And lastly, do not forget that you need to balance your efforts when tightening screws. So that they are tightly and completely wrapped, and that when wrapping it is sometimes necessary to take measures to prevent deflections of the profile sheets from the applied forces.
This is my take on your question.
Under reliable protection
So that wooden structures and under open air maintained their stability for a long time, it is necessary to pay special attention to the structural protection of wooden and metal parts.
Rain and wind won't matter!
As a rule, metal rusting and wood rotting occur unnoticed. Both processes proceed slowly and make themselves felt only when the roof over the porch threatens to fall on the owners’ heads. Not only that - rotten wood and rusty metal parts Over time, they can become a threat to the stability of the entire structure.
Any anti-corrosion protection is designed to protect the metal from exposure to moisture and oxygen. As a rule, this can be achieved by applying special coatings to steel parts. Some of them, such as chromium, combine with steel chemical reaction, others form a film on the surface of the metal, including from a special powder.
When working with wood, in addition to weatherproof impregnation, the most the best remedy from rotting is constructive protection. It basically eliminates the contact of the tree with rainwater and moisture from the soil.
Screws, as a rule, are galvanized or passivated - the latter have a characteristic yellow or dark blue color.
For dark types of wood, blackened screws can also be used, but their anti-corrosion protection is weaker.
Screws from of stainless steel – the best choice when constructing a structure that will be located in the open air.
Formatted screws(1) are used primarily for dry finishing of premises. If, when working with drywall, you use galvanized screws(2), then over time they will attract moisture and become visible through the paint layer. But with the blacks, phosphated screws this won't happen. Chrome/passivated screws(3) can be recognized by its yellowish color. They offer some protection against corrosion, but should not be exposed to constant rain. Stainless steel screws and bolts(4) – twice as expensive, but guaranteed not to corrode.
The phrase “high-quality steel” does not say anything about the resistance of steel angles or other fasteners to corrosion. Only through special processing or the addition of other metals does steel become corrosion-resistant. The four most common methods for protecting steel from rust and weathering are briefly described below.
The degree of anti-corrosion protection that each of these methods provides is different, which also affects the price of products processed by one or another method. High-quality stainless steel fasteners are the most expensive, but they certainly won’t have any problems with corrosion.
Most a budget option- parts made of galvanized steel. But if you want to prevent these parts from rusting, make sure that their coating remains intact. The same applies to powder coated products. Chrome plating is somewhat more resistant to corrosion, but its yellowish color does not always suit the design.
1. Chrome plated
When chrome plating, pre-galvanized steel parts are dipped in chromic acid, as a result of which a chrome film is formed on the products. She gives very good protection from corrosion of screws and other fasteners, which remains, as after galvanizing, for approximately 40 years. Just like bronze fasteners, chrome products By color scheme well suited to wood used outdoors.
2. Galvanized
When galvanizing, steel acquires a protective layer of zinc. During hot-dip galvanizing, parts are immersed in a bath of zinc heated to +450°C. When galvanizing, zinc is applied to the part.
in an electrolyte bath. Fasteners treated in this way retain their anti-corrosion properties for up to 40 years. True, salty air reduces this period to 25 years.
3. Stainless steel
High-quality stainless steel refers to types of steel that, due to the addition of chromium, nickel, molybdenum or titanium, become completely resistant to corrosion under normal atmospheric influences. At the same time, products with smooth surfaces are even more corrosion-resistant than rough ones, which is why some manufacturers subject their fasteners to special grinding. However, it is wrong to assume that products
made of stainless steel are not subject to corrosion at all. Even this type of high-alloy steel is susceptible to two types of corrosion: crevice and pitting. To maintain a decent appearance of stainless steel, regular washing of metal products with warm water and a surfactant is required.
4. Powder coated
Before applying the powder-varnish coating, the products are galvanized. The powder, then applied to the product, is melted in an oven at temperatures above +200°C. After cooling, a durable anti-corrosion coating is formed on the product. In order for the metal to retain its anti-corrosion properties for a long time, the coating must not be damaged.
This way the supports will last a long time!
Drive-in bases: they do not require concrete
During construction wooden structures, which will have to be located in the open air, it is very important that the tree does not have direct contact with the ground and therefore does not absorb moisture. Hot-dip galvanized pier bases are the easiest and most inexpensive means of installing piers stably and keeping them dry. On such supports you can install a lightweight structure made of wood or using frame technology.
When driving bases into the ground, you should use special tools: a plastic mallet and a plastic plug inserted inside the cartridge - this is where the blows should be struck. If you hit metal directly with an ordinary hammer, you can damage it. top part products.
For optimal protection against moisture, the lower end of the support should be treated with a protective glaze. The holes drilled for fastening must also be impregnated with an antiseptic. Protective covering must be completely dry before installation can begin.
Here are two types anchors For wooden supports, installed on concrete foundation and protected from moisture. The H-shaped anchor is suitable for supports of various sizes. The lower third of the anchor is filled with concrete. Those who find anchoring with a classic U-shaped anchor too noticeable can install the supports with virtually invisible anchors with a support shoe. A notch is made in the middle of the support, holes for fastening bolts are marked in the support, the support is put on the central panel of the anchor and secured with bolts. Then the support is concreted.
Supports buried in the ground sooner or later rot. Before the support collapses, its rotten part should be replaced. To do this, the support needs to be lightly dug up, cut down, and the lower part removed from the ground. The resulting gap between the support and the ground can be filled by installing a metal anchor on a concrete foundation. Bottom part the supports should be replaced with a block of suitable size, securing it on both sides with two bars. A concreted wide H-shaped anchor will provide the support with the necessary stability; it is designed for a rack with a thickness of 70-140 mm.
PROTECTION FOR SUPPORTS AND TERRACES
Caps
To rainwater does not damage the tree, special caps are placed on top of the support, the top is sawed off at an angle or rounded off.
This will make your floors last longer.
Structural protection of wood is especially important when installing floors on outdoor terraces.
It will help extend the life of the floorboards. Firstly, the floor of the terrace must be arranged so that it has a slight slope in one direction - this way the water will drain from the terrace by itself.
The other two are simple, but effective techniques We illustrated with drawings.
Correct: the head of the screw remained on the surface of the board. Stainless steel self-tapping screws can break when screwed into hard wood, so you should always pre-drill holes with a slightly smaller diameter than the diameter of the self-tapping screw.
Bad: the head of the screw protrudes above the board or is dented. In the first case, you can get injured by catching on a self-tapping screw. In the second, a depression forms around the self-tapping screw and water collects.
A simple pommel made of galvanized steel can be bought for 140 rubles. in a construction supermarket.
The pommel, made of high-quality steel and decorated with a ball, costs almost 400 rubles.
Plastic tops are intended for children's furniture or playground structures. They protect the tree from rotting and children from injury. Price: 80 rub.
The upper part of the support without a top needs to be either rounded or cut at an angle so that rainwater drains quickly. In this case, the tree must be covered with a moisture-proof solution.
You can purchase a pole top made of wood.
A house or plot without a fence is like a general without an army: it looks completely undignified. In addition, the fence serves as protection from stray animals and partly from unwanted guests of the human race. Today there are many materials for creating a fencing structure - brick, concrete and hardware, mesh, but wood is still in great demand. Previously, supports made of the same material were used for wooden fences; today, a wooden fence is installed on metal poles.
Features of wooden fences
Wood is always in demand because it has mass undeniable advantages:
- Naturalness.
- Decorative.
- Aesthetics.
- Unique color and texture.
- Low cost compared to fencing made from other materials.
- Excellent compatibility with architectural style any building.
- Ease of construction.
- Variety of options.
This list can be continued for a very long time. Of course, like any other material, wood also has disadvantages, namely its relative fragility. But this problem is currently being solved. There are many protective and antiseptics for wood products, the use of which will significantly extend the service life of the fence.
Properties of metal products
The advantages of metal support products include:
- Simplicity of installation work.
- Reliability and durability of the design.
- Strength.
- Resistance against static and dynamic loads.
- Possibility to use any fixation method.
The disadvantages of metal piles include the following: if a fence is used, the price will increase significantly, but if you consider that the use of metal supports will significantly extend the life of the fence, then such a disadvantage is not such.
Types of pipe sections
Metal poles are available in different sections:
- Square. Similar products are easily mounted in sections and are characterized by reliable connections. Parameters: height - 2.5-4.0 m, side dimensions - 6-10 cm, wall thickness - 0.2-0.4 cm.
- Round. If a metal pipe is used with a round cross-section, the price of the supports will be slightly lower, since they are cheaper than analogues of other types. Also, the use of products with a round cross-section makes it possible to select products of the desired thickness and diameter. Parameters: wall thickness - 2.5-3.5 mm, diameter - 5.7-10.8 cm, height - from 2.5 to 4.0 m.
- Rectangular. From square section These products are distinguished only by their shape, so all the characteristics are similar.
Material protection
In order for it to last for decades, it is necessary to protect not only the base material, but also the metal fencing elements. To do this, you need to cover the pillars with special paint. This will protect the metal from corrosion and mechanical damage. To prevent moisture from precipitation from getting inside the pipes, metal caps can be placed on the upper end.
The use of anti-corrosion technologies will help preserve the original quality of the material and its original appearance for a long time.
Site marking
Before you begin making the fence, you need to make markings. To do this, first, where you plan to make a wooden fence on metal posts, you need to remove bushes, trees, and other objects that may interfere. If necessary, you need to level the soil surface. Only now the markings are being made. You need to do the following:
- Drive in pegs at the extreme points of the future fence.
- Stretch a string between them.
- Mark the places where fence supports will be installed. In this case, it is necessary to ensure that they are located strictly on the same line and at a distance of no more than 2.5-3 m. Otherwise, over time, the fence will begin to sag and lose its proper appearance.
Features of fastening support products in the soil
There are several ways to fix metal pipes in the soil, which allows you to choose the most suitable option.
If you are building a wooden fence on metal posts with your own hands, the cheapest option is to drive the pipes into the ground. To do this, a guide is installed inside these elements. To do the job, two people are needed: one hammers, and the other scrupulously controls the verticality of the support. Alternatively, you can not hammer the pipes, but dig them in, having previously prepared a well with a drill, then install the pipe and compact the earth well.
The following installation options are more labor-intensive, but also more reliable:
- Concreting
- Mounting on a concrete plinth.
- Use of screw piles. For complex ones, this is an excellent solution to many installation problems.
Installation of supports
What’s noteworthy is that the rules listed below are suitable for installing supports made of different materials:
- It is necessary to deepen the supports by at least 1/4 of the entire product. This will ensure their reliable fixation in the soil. After this, so that the pillars do not become loose over time, you can first fill around them using crushed stone or brick chips, and then concrete them. Further work can be continued only after the concrete has hardened.
- They begin work by installing the outermost corner piles, carefully aligning them in height. Subsequent pillars are installed at the same level as the previous one. To avoid any undesirable changes, you can, to maintain the height indicator, dig in slats instead of the outer pillars, stretch string between them and then install the remaining supports, focusing on the desired height mark.
- How the posts should be installed - above the future fence, below or level - depends on the choice of the owner himself. But according to the recommendations of experts, a wooden fence on metal posts should be installed so that the supports rise several centimeters above the picket fence.
- To prevent the wind from twisting the fence on rocky, sandy and non-heaving soils, it is necessary to bury the supports no less than half the height of the fence.
- Widening the bottom end of the post will increase its strength and durability. The welded cross will serve as such an extension.
- After all the pillars have been installed, you can concrete mortar Make small cones at their base to drain water.
Installation of a picket fence
When all the supports are installed, you can weld fasteners to them, on which they will then be fixed cross beams- runs. Alternatively, you can weld the fastening first and only then install the posts. But then you also need to make sure that all the fasteners are on the same level and create a single line; this is the only way to attach the purlins without any problems.
Depending on what material the cross beams are made of - wood or a metal profile - the choice of fasteners also depends. If a wooden fence is fastened to metal posts using a metal profile, then it itself can be welded to the fastening, and wood products are fixed using bolts or self-tapping screws. If the cross beams are made of wood, then they are fixed to the fastening with bolts, but the picket fence is fastened with ordinary nails. The main thing is to ensure that there are no distortions or other violations. This can be done using a level, and the height can be checked using the same stretched string.
The picket fence can be mounted either tightly or with a small (or large) gap according to the chosen design. How to decorate the top of the fence? It can be anything - horizontal, at an angle, wavy. In this case, the second and third options are preferable, since due to the convex surface of the picket fence, moisture will not accumulate on its surface, as a result, the fence will serve for a much longer period of time.
All that remains is to make and install the wicket and gate. They can be made of wood, corrugated sheets, pipes, forging, since a wooden fence on metal posts goes well with any of them. The cost of the entire structure will depend on the choice of not only the material of the gate and wicket, but also all elements of the structure.
Installation of fences requires the use of high-quality fastening components that can provide the fence with the proper strength and durability. One of the most important structural elements In addition to fence posts, you can confidently call logs, or veins. The veins are horizontal jumpers on which spans of fences made of corrugated sheets are installed, metal picket fence or wooden fences. Logs (veins) are attached to the supporting fence posts mainly by welding. However, today this is not the most The best decision. Welded joints often do not look aesthetically pleasing, but the main thing is that over time they rust and require constant maintenance. The joints that have been welded must be constantly repainted, since during the fastening process damage to the protective layer of metal, which protects the structure from corrosion, is inevitable. It is also worth noting that welding cannot be used everywhere; in particular, this requires access to electrical networks, which are not always available in the places where the fence is being built. Using a generator incurs additional costs.
In this regard, today fastening connections are becoming increasingly popular: fasteners for poles and joists, as well as x-brackets. They are not much inferior in strength characteristics to welding, and at the same time have a number of undeniable advantages. Fastening connections greatly increase the speed of installation; in addition, already attached joists can be easily removed and installed back or in a new location. When installing fence spans using fasteners, damage to their protective layer painted with primer enamels, galvanized or powder coating is excluded.
Holder for fence joists Fasteners for posts and joists are made according to a different principle: bent metal elements from sheet metal, which are connected to each other by industrial welding, after which they are coated with zinc-containing primer and powder paint. Metal fasteners for poles are available different models and standard sizes.
X-brackets are produced by stamping from an all-metal sheet and subsequent processing of the products by hot-dip galvanizing. The result is cruciform design with curved edges with holes for attaching the x-bracket to the fence post and attaching the logs.
Installation of fastenings for fence posts and joists
The process of installing a fence made of corrugated board, metal picket fence or wooden fencing using fasteners is quite simple. On support pillars The fence is marked at the places where the fasteners are attached. The fastener is applied to the table, a log is inserted into it, the horizontalness of which is checked with a building level. Then, the mount is screwed to the post using bolts or roofing screws. The X-bracket is attached using the same principle.
Installation of logs using holders
The fasteners are easy to use. Their use can significantly speed up installation processes and significantly improve the aesthetics, reliability and quality of fence construction. Our company provides turnkey fence installation services and performs individual species works: drilling holes for fence posts, installation metal poles from round and profile pipe, installation of logs using the welded method or using fasteners, installation of corrugated sheets and other construction work.
How to attach veins to round fence posts? [QUESTION]
Installed metal pipes as fence posts, the question arose of attaching “ears” to attach the veins to the posts. But I didn’t find any information on the Internet about what size it is recommended to make these “ears”; I don’t have enough experience to determine this. The veins are planned to be wooden, 100x50 mm, span length 2.5 m; pillars d=76 mm What height, thickness and length is better to make “ears” so that it is convenient to mount the veins and the fastening is reliable? And what is the best way to attach the veins to the ears - with bolts, nails or some other way?
Answer: Let’s talk about veins right away; they are absolutely useless at such sizes. Especially with such a small span. 60x40 mm, as they say, “for the eyes.”
As for the “ears”, they are generally not needed. Drill your pipe through and fasten the veins with ordinary bolts with an M 10 thread 120 mm long as shown in the figure. To prevent them from unwinding, use Grover washers. You can cut the ends of the bolts a couple of millimeters so that they protrude beyond the nut and rivet them.
Place the bolt heads into the vein.
Unfortunately, you did not specify the material of the fence. 
The construction of a fence around the perimeter of the site requires strict adherence building regulations at all stages of work. The slightest deviation from established standards can cause deformation of the fence. Before you start building a fence, for example, from corrugated board, you should know exactly how to install the posts, how to fasten the corrugated sheet, what fixing products to use (screws, bracket, clamp, rivets). 
This is what self-tapping screws with rubber washers look like for screwing corrugated sheeting to the fence frame
Fastening fence logs from light building materials, for example, corrugated sheets, picket fences or wooden planks, must be carried out only with the use of high-quality components. In former times, fence logs made of corrugated sheets were attached to the support screw piles welding method. Such work could only be done by professionals and required the presence of electricity and welding equipment on site. Fences made by welding did not always look like an example of aesthetics and required constant anti-corrosion treatments at the attachment points.
Modern fencing for personal plots- These are mainly modular fences made without welding, which are easy to assemble, original and durable. They are kits consisting of supports, sections and fasteners. 
Option for attaching cross beams to fence posts
Fasteners for such fences also comply modern trends. In most cases metal frames fastened using devices such as a clamp or bracket.
IN last years The well-proven x-fastener for fences is very popular, providing a quick, aesthetic and high-quality connection. Any fastener for corrugated sheeting or other sectional fabric is a product specifically designed for construction work. Fastening the corrugated sheet logs using modern methods Even beginners can fix it.
Fasteners for corrugated sheeting on the fence are made of high-quality steel coated with anti-corrosion powder or zinc. Various fasteners and additional components are provided for logs, posts and fence panels, for example, rivets, a clamp or a suitable bracket. 
Example of clamps various types for attaching corrugated sheets to poles
You can buy these accessories at any specialized market, in online stores or in construction goods supermarkets.
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Fence fasteners for corrugated sheets are presented in two main types:
- Bracket or x-bracket;
- Fasteners for joists and posts.
The clamp, bracket or rivets are designed to different types fixation. Their the right combination will help to firmly connect the pillars and horizontal veins (joists). Anyone can buy these parts, and their ease of use requires no experience or application special devices and devices. 
Drawing possible options attaching joists to poles
Thanks to products such as fasteners for corrugated sheets, polycarbonate, picket fences or wood, the construction of fences of any complexity is greatly facilitated.
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Fasteners for corrugated sheets, for example, a bracket, are made by stamping from a hot sheet of metal. The fastening clamp, with which the pillars are connected to the joists, is made from bent metal parts welded to each other.
The finished bracket is subjected to hot-dip galvanizing, and the welded fasteners are painted with protective powder paints.
These accessories provide the fence with aesthetics, good wear resistance and strong fixation for the entire service life. Attaching corrugated sheets to the fence using fasteners is becoming more and more popular way connections of structures. 
Scheme of correct fastening of a corrugated sheet to the frame
The advantages of using this fixation method include the following:
- Convenience and ease of connection;
- Availability;
- Fast pace of installation;
- All joining points look beautiful and neat;
- There is no need for electricity and welding machines;
- The integrity of the top layer of mounted structures is maintained.
Special fasteners for corrugated sheets, such as a clamp, help connect posts, crossbars and fence sections firmly and efficiently. At the same time, the elements of the fence are not subjected to rough impact and mechanical damage.
This connection gives the fence external beauty, integrity and ensures its long service life. If you need to rearrange the pillars, change the fastening of the joists, or dismantle the fence, then this can be done without damaging the prefabricated components.
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Most often, fences made of corrugated sheets are erected around dacha and land plots. 
This material is versatile, strong, affordable and durable. The corrugated sheet is used as a fence covering throughout. Even a novice builder can easily learn to work with it. A wide range of colors and an assortment of profiled sheets adds to its popularity. You can buy a quality product in many stores across the country at a relatively low price.
The material consists of a sheet of steel that has been galvanized and treated with anti-corrosion treatment. A primer is applied over the protective layers. The last coating of the product - a fence made of corrugated sheets - is covered with paint with polymer components. To prevent the canvas from being damaged during the construction of the fence, only special fasteners, such as a clamp or brackets, must be used to secure it.
Construction is a complex process that requires a lot of knowledge and skills. And if a person was faced with the task of attaching wooden beam to metal, then for this it is important to find out necessary information. Because this work process is extremely specific and requires at least minimal skill, and even better if the work is done not alone, but with four hands.
Where to start and what to do
To begin with, it is worth deciding on the possible thickness of the metal itself, and selecting it according to its size. necessary tools. It is important to choose high-quality and durable screws, the thickness of which will directly depend on the type of metal sheet. Everything should be as harmonious and correctly selected as possible. The size of the beam in this case does not play too big a role. In order to attach the beam to the metal, in metal sheet or in any other form, you need to drill required hole, which will correspond to the timber. And after that, install the tree to the required height or correct position and then begin installing the screws. Regarding screws, you shouldn’t feel sorry for them, because this process they are a guarantee of the reliability and strength of the entire structure. If you suddenly lose 
If you are trying to install wood into slate together with metal, for example, then the screws should be replaced with self-tapping screws of the greatest length and volume. Since the work required is quite painstaking, and the timber will have to be held while screwing in the screws, it is worth using the services of some assistant. Because it is almost impossible to cope with this task alone. With four hands everything will go much faster and with a full guarantee of quality.
Is it worth preparing the tree?
If installing wood into metal is necessary for an outdoor structure, then the wood must be prepared and lubricated with a special solution to ensure that the wood is dry and not exposed to moisture. This way you can ensure that the structure stands for a long time and reliably, and delights you with its beautiful appearance. The type of wood when working with metal does not have special knowledge, the main thing is to choose perfect option according to size and purpose of use.