Restore appearance furniture that has fallen into disrepair is not at all difficult.
If the upholstery on an old chair has become unusable, do not rush to throw it away, just reupholster it with new fabric.
You can restore chairs and sofas with your own hands, saving money on buying new interior items.
In addition, reupholstering furniture is also a good way to earn money, with the help of which it is quite possible to replenish the family budget.
Before reupholstering the chair, you need to carefully inspect it. Determine which parts need replacing and what can still be used. Typically, the areas that suffer the most are foam cushioning, rubber straps used for ties, and upholstery. Therefore, it is wiser to change them. It is also necessary to replace everything metal parts: nails, screws and staples.
Furniture disassembly
In order to disassemble the chair, you will need the following tools:
- pliers;
- keys;
- Phillips and regular screwdrivers;
- pliers.
First of all, you need to remove the back wall and plywood bottom of the chair. They are usually secured with small nails or screws. If plywood is suitable for further use, then you should remove it carefully.
Remove the foam padding that is located underneath the seat and gives the chair its elasticity. Tighten the nuts securing the legs to the back of the furniture. If the fasteners are rusty, use a special liquid to remove corrosion from the metal.
Next you need to remove old upholstery and remove the softening layer from the back. To do this, use a flat-head screwdriver and pliers. Use a screwdriver to pry up the old brackets so that one of the fastening legs comes out of wooden surface. The staple is then finally removed with pliers.
By prying several fasteners at once, you will avoid damaging the plywood. Remove them sequentially to avoid getting scratched by staples that have not yet been removed. A wound on the skin caused rusty metal, can cause a lot of trouble. Therefore, it is best to disassemble the chair while wearing gloves or mittens.
After removing all fasteners, the old upholstery is removed and the gasket is removed. Old foam rubber can crumble and fall apart into pieces. If you are restoring furniture in an apartment, then lay it on the floor plastic film or newspapers. And only then remove the worn-out chair softening, otherwise small debris will scatter throughout the room.
The wooden frame of the chair is restored separately. It is necessary to remove a layer of varnish or paint from it, glue the loose elements and paint all parts of the structure.
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Back restoration
In order to restore the chair with your own hands, you will need a special furniture stapler and fastenings to it. Regular office staples will not work as they are made of softer metal and their legs are much shorter. It is best to use 6mm and 10mm staples. To reupholster a chair, you will need approximately 2 packs of fasteners of the first type and 1 pack of the second.
If the tension of the tightening tapes on the back has simply weakened, then they can be tightened. To do this, the fastening tapes are removed from one side, the tightening element itself is tightened, and its free end is targeted with a stapler. The staples need to be driven in, changing their position relative to each other, and not fastened exactly in a row. This technique will help avoid delamination of the plywood. It is necessary to restore tension on all elements.
If rubber bands become rough or cracked over time, they must be completely replaced with new ones.
In the design of old chairs, the longitudinal tape is passed crosswise between the transverse ties (alternately above and below the transverse tapes). If the back of the chair is curved, then it is better to place the transverse tie on top of the transverse strips. This way the load on the furniture will be distributed more efficiently, and the chair will no longer be squashed.
Be sure to trim all the tape allowances along the frame bar or slightly away from its edge. Otherwise, bumps and unevenness may appear under the new upholstery, spoiling its appearance.
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Removing old upholstery
Next you need to remove the old upholstery from back wall armchairs. Usually its edge is glued and removing the fabric is not difficult. Using a flathead screwdriver, pry the edge and tear it away from the base. If the glue holds the upholstery tightly, trim it with a utility knife.
Old fabric can be reused. It is pulled over the back so that the new foam pad does not tear along the tightening tapes. In addition, worn upholstery will become the basis for fixing the new softener. Therefore, it should be removed very carefully.
Now the old upholstery needs to be fixed again. Align the fabric on the back frame, then place the frame on its end. The upholstery is secured starting from the lower left corner, targeting it with a stapler. Having secured the fabric with 1 fastener, slightly pull the upholstery to the right and place another 1 fastener approximately 1 cm from the previous one.
The fabric must be stretched so that it does not sag, but also does not form diagonal stretched folds. Small waves are acceptable. You will align them when you adjust the tension of the upholstery on the other side. But large creases will be difficult to remove.
We fasten the fabric and turn the frame with the opposite side towards you. We stretch the upholstery as tightly as possible and fix it again. Next, we secure it along the entire perimeter of the frame, constantly slightly pulling the fabric.
At the corners we place counter folds (folding the fabric into an envelope), cutting off the excess so that the upholstery does not stick out. We fasten the staples, using one fastener to grab both sides of the fold at once. This will prevent the fabric from fraying. Secure all 4 corners by shooting 2-3 staples.
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Preparing the furniture seat
Just as carefully as you did with the back, remove the fabric from the seat and remove the worn foam. Remove all nails, old screws and screws. If the fasteners cannot be removed, they must be carefully drilled out. Trim excess fabric from the fastening points, removing threads and remaining glue.
Using pliers, grab about 5 mm of the rubber band and pull it tight, moving it over the edge of the frame and resting it against the block. Secure the edge of the tie using a stapler. The staples must be installed by changing their position relative to each other. Otherwise, the rubber band may break. Restore tension on all bands in the same way.
As in the case of the backrest, we reattach the old upholstery, repeating the previous operations. If the chair's foam padding is not too worn, it can be reused. To do this, place the foam rubber from the seat across the frame so that it protrudes on three sides, and on the fourth does not reach the edge of the frame by about 10 cm. The gasket is glued, the excess is cut off using a stationery knife.
Take the old foam padding from the backrest and glue it to the seat. Since it is 2 times thinner, fold it in half. Don't forget to leave a fold allowance for the frame. It makes more sense to glue the gasket first, and only then cut off the excess.
All joints must be securely taped so that the foam does not subsequently come apart along the seam. To do this, coat the joints of the gaskets with glue and leave for several minutes until the surface becomes viscous. And only then the parts are connected, squeezing with force. Lastly, glue the bend, attaching the foam to the base, and cut off the excess allowances.
The new gasket is attached in the same way if you do not want to use the old foam rubber. To soften the back, you will need a new softener in any case. If you do not have foam rubber of the required thickness, then you can glue 2 layers of thinner padding together.
Place the back of the chair on a sheet of softener. The back of the foam is aligned with the bottom edge of the chair frame. Leave a fold allowance on top. The back is outlined with a marker, then the softener is cut out.
Glue the padding to the fabric of the chair back and trim the edges flush with the frame. Carefully glue all edges. Only after the adhesive has completely dried, cut a strip of softener from the bottom edge of the back of the chair equal to the width of the bottom crossbar.
Reading time ≈ 5 minutes
Any old piece of furniture deserves a new life. Especially when talking about upholstered furniture, because its upholstery very quickly takes on an unsightly appearance. In an accessible way renovation is to reupholster the chair with your own hands. This provides significant savings and guarantees a fun-filled pastime. Photos and videos will help in your work.
Step 1. Preparatory stage
If you decide to change the upholstery of upholstered furniture, you need to prepare all the tools and materials necessary for such work. The most difficult thing is to choose the fabric for the upholstery of the chair. It must fit into the interior, be durable, and resistant to abrasion. To determine the size of the cut, you can use a measuring tape to approximately determine its quantity by adding up the sizes of all the parts that need to be tightened. Be sure to leave the fabric at the hem.
A more accurate result can be obtained if measurements are taken when the chair is disassembled into individual parts. Then you can tear off fragments of old fabric and measure them accurately. In this case, the chair upholstery material will be purchased in the required quantity.
The following tools will be useful for the job:
- roulette;
- furniture stapler;
- hammer;
- screwdriver;
- pliers.
Step 2. Disassemble the lower part
Dismantling work always starts from the bottom. The chair is turned over and the legs or other base are removed. Usually, when assembling furniture, the work ends with the design of the bottom. Therefore, it is advisable to disassemble the chair from here. The brackets must be bent and the screws unscrewed.
If the chair has been used for a long time, and it was soaked unpleasant odors, it’s a good idea to treat the parts with a disinfectant while they are disassembled.
Step 3: Removing External Wooden Parts
Many chairs have exterior wood components, such as armrests. They must be removed. A screwdriver and a hammer will be useful for this. Nails and staples may be rusty, so care should be taken.
Step 4. Disassemble the bottom
To be able to remove the fabric, you need to disassemble the bottom completely. To do this, remove the fabric from the bottom by bending the staples. If there is a plywood bottom, it is removed. Next, they begin to work with the upholstery, freeing the secured edges. When removing fragments of old upholstery, you need to be careful. After all, old fabric is needed to make patterns for new parts. It is better to do this job with pliers and a regular screwdriver. If you pull the fabric too hard, it will tear.
Step 5. Mark the assembly sequence
To avoid getting confused during assembly, you can put instructions on the old fabric that reflect the sequence of actions. After all, the furniture will have to be assembled according to the same principles that were disassembled.
Step 6: Remove Fasteners
For greater durability, the upholstery fabric is wooden frame secured with special brackets. It is very difficult to remove them. To straighten them and pull out the fabric, use a knife. If done carefully, these staples can be reused. This will reduce overall costs.
Step 7: Remove the fabric
Once all fasteners are removed, all upholstery fabric can be removed. Sometimes, in order to get to the fasteners that grip the fabric, you have to tear the batting. Once all the upholstery fabric has been removed. It is necessary to evaluate the quality of the filler. If it is worn out, you can add a new layer of batting or foam rubber. If it is completely unusable, it is replaced with a new one.
Step 8. Evaluate the method of attaching the foam rubber
If a well-thought-out fastening system was not used during the production of the chair, then over time the edges of the filler will break off. To prevent this from happening with the new filler, you need to use clamps. Then the edges will not break off, and the quality of the furniture will be higher.
Step 9. Inspect and remove all old parts
In this chair, the upholstery was attached with buttons. All unnecessary fasteners are removed so that the new layer of batting or foam can fit without problems.
Step 10: Cut the fabric
To cut, you need to lay out the old upholstery fragments on new fabric. If there is a graphic design on the fabric, you need to think about how the individual elements will fit together, and in general, what will be on this or that part of the chair. If the material has lint, you need to make sure where this lint is directed.
The cutting must be carried out with a reserve. After all, it’s unlikely that all the fragments will fit well the first time. You need to do a few fittings to see how the parts fit. For fitting, the parts are connected using a needle. Basting will not leave rough marks.
When all the parts are ready, you can begin assembly. It will be carried out in the reverse order of the actions that you performed during dismantling.
Step 11. Decorative upholstery details
All decorative upholstery parts are installed in their original place. You can make new ones, if you still have the old ones, you need to think about how to arrange them correctly. To make new parts, you need to use a thick cord, which is inserted into specially stitched strips, the width of which is approximately 2 cm.
Step 12: Refresh the Wood Pieces
Even a skillfully done reupholstery of an old chair will not give desired effect without updating wooden parts. Black paint will look trendy on the armrests. Using paint in a can allows you to apply the paint layer evenly.
A protective coating can be applied over the paint layer to make the paint more durable. The same product gives surfaces shine and special smoothness. If you have doubts about the selection necessary materials For coloring, you need to consult the store. They will definitely help you there.
Step 13: Finally attach the fabric
You need to lay out the cover on the chair and check everything again. The fabric should evenly wrap around the chair, all fasteners should be hidden. If everything is in order, the edges are folded and secured with staples. After completion of work, all edges must be folded.
Step 14. Sew the pillow cover
On sewing machine They also sew down a removable pillow cover. Under the pillowcase, if size allows, you can place another layer of foam for greater comfort.
Step 15. Enjoy the result
It will take about 6 hours to reupholster such a chair. The difficulty is that each chair has its own nuances and, most likely, you will have to figure out how to reupholster a chair in your home. However, compliance with the main condition - stage-by-stage dismantling and subsequent assembly in the same stages - will allow you to change the upholstery of any upholstered furniture.
DIY chair reupholstery video
The process of reupholstering a computer chair with your own hands. We will not just drag, but also embellish and experiment. By clicking, the photos are enlarged as much as the screen of your device allows.
We have such a chair (in the photo the armrests are already twisted). Task: replace the crosspiece, upholstery fabric, foam rubber.
In addition, it was decided to make the seat cushion removable and with a zipper, so that later it would be easier to change the filling - foam rubber. And also raise the lumbar support in the back.
We use:
- Fabric (microvelour) because I prefer to sit on fabric and, in no case, on leather
- We will use genuine leather to cover the armrests and crosspieces of the chair
- Foam rubber 40mm and 20mm thick
- Sintepon
- Tools: drill, stapler, long needles 15cm
Let's start disassembling the chair. This is not difficult to do - just turn the chair over and look for something to unscrew somewhere:
We remove all the old fabric, removing the staples that hold it. You can remove the staples with a simple flat-head screwdriver, but I have special tool:
Old fabric and foam have been removed. I hoped that the chair was made of bent plywood, but it turned out to be just fiberboard in several layers = (But in general the frame of the chair is metal, so it’s not that scary.
Since you make a chair for yourself, experiments are allowed. As a backing for the seat I use a sheet of something like foamed polyethylene. It is much more rigid and elastic than foam rubber and deforms little over time. Pasting:
I tell you what kind of glue you can use for foam rubber. Then I glue 2 cm thick foam rubber onto the backing, bend it and shoot it with a stapler:
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We measure, make patterns, sew a cover from leather and technical fabric. So the leather is natural, and not disgusting, cold leatherette, we make the seams with an inversion outward. Fashionable, stylish, youthful. We sew on strips of Velcro to attach the seat cushion (yes, this is not the whole seat, there will still be a cushion on top). They put it on and shot it from below, again with a stapler:
Now we make the seat cushion. I made it from two layers of foam rubber 2 cm + 4 cm = 8 cm. We cut it out, apply it, try it on, trim it... Then we take measurements and sew a cover with a zipper. We sew Velcro on the bottom. We put on the cover, having previously wrapped the foam pillow with synthetic padding. I didn’t take any photos of the process, and the article is already long. Here is the finished pillow on both sides:
In fact, it is not necessary to sew; you can immediately glue thicker foam rubber, for example 8 cm, onto the seat and cover it with one solid piece of fabric.
Let's start with the back. We definitely won’t be sewing anything here. We make markings, draw diamonds. We drill holes. Got 17 pieces
We glue the foam rubber onto the back of the chair. The bottom layer is placed in places to create thickening where necessary (for example, I made the lumbar roll higher). Upper layer whole. On the foam rubber we make the same markings as on the fiberboard of the back, we also drill holes, making sure that they coincide with the holes on the fiberboard.
With a regular drill you won't drill through the foam. You can, of course, cut it out with a knife, but it’s more accurate with a drill. I made this homemade drill for foam rubber, I think it’s clear from what and how:
Now the most interesting and difficult part. We make a peak on the back. Or as they also call it, carriage tie, aka “capitone”. There are many techniques for such screeds, and how to make a carriage screed is a separate issue. big topic. I will only say that you can only learn this by working personally, through trial and error. Laying out fabric using this technique is more difficult than laying out leather, because... fabrics do not stretch in all directions and their elasticity is usually lower. Although the fabric I chose does not lay out very well, I wanted to create a relief with deep wells. I picked it in place, without marking the fabric, using two large needles and a cord.
We take a piece of fabric with a reserve and go on our way - lay out the folds, fasten them by stitching them with cord through the holes. Making a carriage screed:
WITH reverse side We fasten the backrest with a stapler. Don’t forget to put a padding polyester between the fabric and the foam rubber.
The chair can be upholstered with any material, depending on the client’s taste preferences, interior design or financial capabilities. This can be leather, its substitute or another textile analogue.
Components for upholstery
Padding office chair do it yourself most often using the following types of materials:
Genuine Leather. It is considered the most elite and prestigious option. You should work with it carefully. The work will require additional tools, which will also increase the cost of repairs.
Leatherette. Most best option in the price category, but also the most short-lived. Although this office chair upholstery is cheap, such material will last no more than 2 years, which is less than that of inexpensive fabric upholstery. There are leather substitutes High Quality, which are in no way inferior to genuine leather, but their cost is almost equal.
Textile. This material has the widest range in both color scheme, and in the texture of the fabric. A cheap option is chenille - a fabric consisting of cotton and synthetic fibers. Further in ascending price: flock, jacquard, microfiber and tapestry.
Repair features
The design of the chair and its material are determined by what it is intended for. This could be the chair of a boss or management team, or an ordinary employee or client. The status of the chair is indicated by its upholstery. Often this is a leather option. Others have cheaper analogues or a textile surface - they are lighter in design and mobile.
When the owner is already very fond of the chair, it is not necessary to buy a new one and get used to it. Upholstery can be ordered old furniture or do it yourself if skills, materials and tools allow.
Stages of work
Upholstering an office chair with your own hands is not as difficult a task as it might seem at first. It is not necessary to call a specialist if you have one at hand necessary tools and materials. For work you will need the following elements: fabric for covering, foam rubber, scissors or a knife, screwdrivers - Phillips and flat-head, furniture stapler.
Before starting work, the chair must be disassembled. It's easier to do this if you have instructions. But often there is none, so you need to understand the device and properly disconnect the cover and seat. It is better to take a photo of the chair before disassembling and at the next stages, because this will make it easier to reassemble it after repair.
The simple product has standard fasteners, so reupholstering an office chair with your own hands will not take much time. It is enough to unscrew the bolts and screws in certain places. Once the parts of the chair are disassembled, you can begin to remove the old upholstery. To do this, use pliers, a screwdriver and an anti-stapler if there are staples. After this, using the measurements of the old cladding, we make patterns on the new material. To do this, simply attach the products to each other and trace the outline.
Next, you should lay the material on the floor in this order: sheathing component, foam rubber and frame (back or seat). Then fasten the first one well to the frame, while pulling it well - do not make folds, but carefully secure the result with a stapler. Upholstering an office chair with leather is not only about giving the furniture an updated look, but also about increasing the status of the organization, especially in the eyes of clients. When both parts are covered, you can put the chair back together and enjoy the work done.
Like Alcantara?
Material such as Alcantara is widely used in various fields. This is the one that has a sticky layer underneath. Thanks to this, it fits perfectly on the surface. Alcantara has good timing service life (up to 7 years), it is not very stretchable, but elastic enough to create comfort for work. The best Alcantara is made in Korea; it should have a 5 x 5 cm grid on the reverse side.
You can reupholster a chair made in China using the following tools: pliers, marker, measuring tape, scissors, ruler, knife, Alcantara with self-adhesive.
To prevent excess consumption of material, it is necessary to make a calculation. To do this, measure all parts of the chair. Next, add 5 cm to each side for allowances. The excess will then be cut off with a utility knife. After this, you can disassemble the chair by simply unscrewing the necessary elements. Next, cut off the required pieces of Alcantara, marking the dimensions with a marker on the inside.
Should I remove the old upholstery?
Reupholstering an office chair with Alcantara suggests the possibility of not having to remove the old upholstery. Alcantara is such a comfortable material that it fits on any surface. The protective base should be separated from the piece and applied to the workpiece, while the Alcantara should be leveled so that there are no folds. Wrap the excess over the edges. Later they are fixed or trimmed. In this case, you need to cut it off immediately, otherwise after an hour it will be impossible to peel off the Alcantara.
Reupholstering the entire chair or part of it?
Often, users are dissatisfied with only a separate part of the chair, and only the back or seat cover can be replaced. The scope of work must be established before it begins.
Reupholstering an office chair does not necessarily have to involve turning to specialists. You can use repair tips, equip yourself with the necessary tools and materials and carry out your own restoration.
Office chair repair
Organizations often send chairs for repair. Reupholstering is a simple task, but when the amount of work is large, only professionals can handle it quickly and efficiently. They can come to your office or home, take measurements for free and calculate the exact cost of the work. Also pick up products for repair and bring them back to set time. Often the entire work takes no more than 2-3 days.
Not only upholstery replacement is included in the work of such companies. They can repair the chair frame itself, replace casters and legs, foam rubber and plywood. The cost of the service will depend on the volume and urgency of the work performed. The calculation is based on what parts were used and how much time was spent.
Price
Padding office furniture- this is a job for a number of professionals. Now the market is replete with companies that provide similar services. They often offer the following service:
Surveyors visiting the site and preparing an estimate for the work;
Transporting the chair;
Dismantling the product;
Preparation of upholstery material according to sketches;
Directly reupholstering an office chair;
Return finished product at the expense of the company.
Each organization has its own price list for the services provided, and prices can vary from 500 rubles and above. Not only the material matters, but also the design of the chair, its dimensions and the initial cost.
Reupholstering an office chair, the price of which depends not only on the cost of the company’s services, but also on what upholstery material will be chosen by the customer, will allow you to return old look old furniture. As a rule, the catalog is provided by the company itself, it presents Genuine Leather and its substitutes and textile analogues.
You can, of course, sit at the computer on a regular chair, and even on a stool if there is nothing else to do. But after this, the neck becomes numb and the back may hurt. Therefore, it is better to get a special one. Moreover, you don’t have to buy it, but make it yourself.
Option one - more complicated
First you need to prepare all the necessary tools:
- grinder saw and jigsaw;
- electric drill and drills of the required size;
- furniture stapler;
- screwdrivers and keys for fastening, as well as the fastening itself (bolts with nuts, self-tapping screws, screws);
- sandpaper for finishing work;
- welding machine (which can be rented).
We will also need foam rubber, padding polyester, plywood from a centimeter to one and a half thick, upholstery material, a metal profile (channel, corner, pipe), varnish or paint. And also wheels, if provided.
- We cut out the backrest with the seat from plywood, as well as top part armrests.
- We sand everything around the edges.
- The bottom can be made on a cross-shaped base with wheels, or with four legs.
- Since there will be no height adjustment, we carefully measure the parts of the base, adjusting them to your height
- . To make the frame we use welding and metal profiles.
- We also weld U-shaped armrests.
- If you want to make the back adjustable, then we will screw strips with holes to it, and bolts to the seat.
- We make the frame on hinges. Well, we simply screw the non-adjustable backrest to the base or weld it.
- After priming, painting and drying the structure, we attach the plywood parts (back, armrests, seat). And wheels if the base is cross-shaped.
- Then foam rubber is placed on the plywood, and a layer of synthetic padding is placed on it.
- We make a tight fit on top upholstery fabric using a furniture stapler. Upholstery parts are cut out with an allowance of about 2 centimeters.
DIY computer chair
Option two - easier
Here we will need the remains of an old office chair. Then you won't have to bother with welding. And the upholstery pattern is easy to make - old upholstery will serve as a stencil. It’s great if the lift works - then you can also adjust the height of the seat.
And if, for example, the crosspiece of an old product is broken, then you can replace it with five circles of different diameters made of chipboard or MDF. They are connected so that the largest circle is at the bottom. We drill a hole from above exactly according to the diameter of the base pipe, securing it with liquid nails.
The following video will tell you how to make a new one from the remains of an old office chair computer chair-stool:
How to disassemble and retighten a product
This process will not be particularly difficult - after all, computer chairs are usually delivered disassembled, folded into a box. So, when purchasing, you have to connect the back and base with the seat together. And to disassemble the chair, you just need to repeat it in reverse order.
As a matter of fact, detailed disassembly for reupholstery is not required:
- First, remove the back (it is held in place by one screw with a large plastic head and can be easily removed by moving upwards).
- To remove the backrest protective cover, you need to carefully pull each of the four corners, opening all four latches (the part is put back with with the help of the lung tapping).
- Turning the chair upside down, you need to unscrew the four screws holding the seat, which can then be removed (after first disconnecting the armrests).
Now let's cook upholstery(furniture fabric, leatherette) and a furniture stapler, as well as staples for it at least 8 millimeters long. Having stretched the piece of fabric properly, estimating its size by eye (you don’t have to make a pattern), we secure it with staples from the inside out. First - vertically, then - horizontally.
This will ensure the correct tension. Then the corners are drawn diagonally. After reupholstering, we trim off the excess fabric and put the chair back together.
The instructions described apply to standard models. If you need to reupholster a luxurious “manager’s chair,” then it’s better not to try it yourself, but to immediately take it to a workshop.
To prevent your chair from getting dusty or dirty, you should frame it in a special cover. Of course, it’s easier to buy a cover for a computer chair, but you can also make it yourself using universal patterns.
The following video will tell you how to disassemble a computer chair with your own hands:
Now let's watch a video on how to repair and reupholster a computer chair with your own hands:
DIY computer chair cover
We are going to have to sew two separate covers for a computer chair with our own hands: for the back and for the seat (most chairs are designed this way). To do this, take transparent tracing paper, apply it to each of the parts and trace with a pencil or marker. Then we cut out and get patterns from which we can cut out elements from the fabric.
Don't forget about seam allowances. For the seat, in particular, they need to be larger (5 centimeters) in order to hem the edge and insert an elastic band or cord there to tighten the edges (optional).
- The back part can be made in two versions:
- A double cover, consisting of identical parts, is sewn on three sides (except for the bottom), and then turned inside out and placed on the back of the chair from above. In this case, the allowances are 2 centimeters. You can make a pocket on the back side.
A single cover with an allowance of about 5 centimeters is folded to form a tunnel into which an elastic band is inserted (like in a seat). Such a cover should tightly fit the corresponding part of the chair.