DIY bumper repair glue

In detail: DIY bumper repair glue from a real master for the site my.housecope.com.

In any case, you can fix this problem on your own without resorting to the help of specialists.

How to glue a cracked bumper?

All these materials must be characterized by a high level of adhesion to plastic.

First, the cracked area needs to be refurbished. To do this, we clean the surface of the bumper and degrease without fail. Sand the damaged area thoroughly.
Secondly, we prime the bumper. Apply a layer of soil to the sanded surface and wait for it to dry.

Next, apply a layer of glue and a glass cloth tab. It is more rational to use a non-woven fabric with large cells.
The next step is to apply a patch to the place of the bumper crack. Here it is important to let it dry and harden, and then fill the outer holes with special glue. It is imperative to remove excess adhesive solution.

After that, the entire surface of the bumper is cleaned. To do this, use sanding paper. You can eliminate all irregularities with sanding and putty.
The final stage is painting the bumper.

Many motorists are interested in the question of the better to glue the cracked plastic bumper... There are two options: either weld or buy a universal adhesive with high adhesion to plastic.

It is preferable to choose the second option.

Nowadays, there are quite a few special adhesives for gluing plastic. Some are known to us for use in everyday life, and some are designed specifically for troubleshooting car problems.

The most common types of special adhesive solutions are:

Video (click to play).

WEICON constraction;
AKFIX;
Power Plast.

Let's try to figure out which glue is best for gluing the bumper.

All options are universal and can glue absolutely any kind of plastic, and not only.

WEICON constraction is an adhesive with high strength and elasticity. It will glue stainless steel, phenol, vinyl, polyurethane, styrene in a matter of minutes. It is characterized by a high level of resistance to various weather conditions, ensures long-term reliable adhesion.

Repair cracked bumper

AKFIX is an excellent spot bonding solution. It has a number of advantages: it glues plastic products with high quality, does not require preliminary priming, and provides high quality and durability. Polymerization is carried out when exposed to air humidity. Bonding takes place within a few seconds.
Power Plast is a universal adhesive for plastic repair. He repairs cracks, dents, chips, is a real find. Its main advantages are convenient use, reliable high-quality results and high strength of the glued parts.

VIDEO ON TOPIC

When choosing a universal glue for gluing a bumper on a car, visit a specialized hardware store, where experienced consultants will advise you on the best tool that can quickly, reliably and efficiently fix a breakdown. The main thing is that the glue has a high level of adhesion.

A bumper is a part of a car that performs mainly a protective and to some extent aesthetic function. In most modern vehicle models, this element is made of various types of thermoplastic. Car bumper repair or restoration is most often required after a collision or traffic accident. As a result, cracks, dents, scratches and other visual defects appear on the bumper.

The plastic bumper is easy to damage, but you can even repair it yourself.

Today there are several options for rebuilding a plastic bumper. The main ones are:

Repair by heating. In this case, the problem area is heated to a certain temperature, after which it is straightened or welded;
Recovery by welding. In this way, in most cases, splits are eliminated. In this case, the two parts of the bumper are heated and welded by welding. For these purposes, special plastic electrodes are used.

Do-it-yourself bumper repair can be done using special adhesives. This procedure will not take you too much time and effort, moreover, it is not particularly costly in terms of financial resources, since you will perform all the work yourself. So that your efforts are not in vain, you should prepare the entire list of necessary tools (sharp knife, electric hair dryer, soldering iron and brushes), as well as choose the right glue... When carrying out this operation, do not forget about safety precautions.

Here you will learn what to do if your steering wheel starts to creak.

Do you want to customize your car? Here you will find out the approximate cost of airbrushing by car.

The quality and reliability of the fastening directly depends on the glue.

A high quality product is able to provide a strong and reliable connection between the bumper elements. You should also take into account the fact that the glue, after hardening, must have the same properties as the material from which the bumper is made. If the bumper is painted after repair, then it is quite possible to use thermoplastic and thermoactive adhesive bases. Using such glue, you can be sure of the reliability and strength of the resulting connection.

Proper preparation is the key to the most efficient and high-quality solution to the problem of restoring the bumper of your car. Preparation, as a rule, includes: preparation of fragments to be glued: plastic elements should be well greased with glue. Therefore, first, the bumper is cleaned of dirt, and the necessary shapes are given to the place of gluing. You should also prepare the entire list of necessary tools and materials, after which you can start working.

The choice of the repair method directly depends on the material of the car bumper. Initially, such parts were made of metal, but since they are very bulky, they were replaced by more practical plastic elements. However, for these purposes, various types of plastic are used today, which means that the approaches to restoring such parts are also different. So, for example, if your vehicle's body kit is made of fiberglass or hard plastic, then the only option for restoring it would be gluing. Moreover, all work is performed in a certain sequence in several stages:

Cleaning, as well as thorough washing of parts;
Edging at the cracks. Usually, after a rupture, the edges of the cracks are framed by fibers of the material (especially on fiberglass bumpers), which do not make it possible to tightly join the elements. Such fibers can be removed by means of a universal grinder "grinder";
After that, we dock the necessary fragments and fix them on the front side with a special glue base;
Next, you need to prepare the epoxy resin in accordance with the manufacturer's instructions. Also in this case, you can use polyester resin - this is a more modern material with better qualities;
With the prepared composition we lubricate the bumper in the place of the crack, as well as the area next to it with a width of 5 cm (from the inside);
The next step is to impregnate the fiberglass mat with polyester resin, which is then applied in place of the existing break;

There are several options for repairing a plastic bumper, fiberglass is just one of them.

After the work carried out to restore the plastic element, the bumper is degreased, then several layers of a special primer are applied, and then painted. It should be remembered that in this case, you can only use a specialized putty designed for working with plastic. If the bumper of the car is painted in the color of its body part, then the enamel should be covered with several layers of varnish. After all these procedures, the bumper is installed in place.

One important question remains: do it yourself or order a service at a service center? In this case, the choice of one or another option for solving the problem depends on: the personal preferences of the car owner, his financial capabilities, and also whether he has the entire list of the necessary tools and skills. Also, the decision depends on the material of the bumper and the complexity of the damage.

See how else you can glue a car bumper (video)

We can definitely say that you can independently repair the bumper by gluing - this is a fairly simple procedure that will not take you too much time, effort and financial resources. The main aspects here will be the step-by-step execution of all work, as well as the use of high-quality materials and the correct choice of an adhesive base. Image - DIY bumper repair glue

The bumper in a car is the most protruding part of the body, which, in addition to being decorative, has a protective function, taking over and softening impacts in frontal collisions. Hence, it is clear that this body element is damaged quite often, therefore, it is often necessary to restore it. This is done in several ways, one of which is repair by gluing individual fragments. Therefore, many motorists are interested in how to glue the bumper with their own hands and what kind of glue to use at the same time. Let's figure this out.

The most effective ways to restore the integrity of plastic are now:

Each method has its own advantages and disadvantages. Experts use gluing or welding depending on the type of plastic... However, the adhesives that are widely available today allow the welding method to be phased out. After all, gluing is much more convenient and accessible to everyone due to the simplicity of the process.

What is the bonding process? This is a rigid one-piece connection of two or more fragments due to the adhesion of an adhesive to the parts to be joined. That is, one of the requirements for the glue is its high adhesion to this type of plastic. The better the adhesive adheres to the material, the stronger the bond will be.

MAXI-PLAST glue is designed for all types of automotive plastics

However, adhesion depends not only on the characteristics of the plastic, but also on the degree of preparation for the bonding process. In order for the adhesion to be sufficient, you should:

maximize the area of the glued surfaces;
thoroughly clean the parts to be connected;
effectively degrease the surface.

These activities should be carried out in a complex, that is, none of them can be neglected.

The second quality that the glue should have is the correspondence of its physical qualities after hardening to the same indicators of the material to be joined. For elastic parts (rubber, for example), the same adhesive is selected. Plastic assumes a rigid connection, therefore the glue mass after polymerization should become hard. If you select the adhesive composition very carefully, then you should take into account its compliance with the material to be joined in many other physical properties.

It is very important to carefully prepare the bumper for painting:

For work, in addition to glue and the damaged bumper itself, you will need:

self-adhesive tape;
some kind of abrasive or cutter;
degreasing liquid;
detergents.

Work should begin by thoroughly washing the parts to be glued, after which they should be dried. Further, the process has the following sequence:

On the mating surfaces to be glued, it is necessary to make corner cuts in order to form a funnel-shaped depression. It is more convenient and faster to do it with a cutter. If it is absent, a file or file will do.

How to create a depression using a Natfill

The surfaces to be glued and areas around the seam must be cleaned of formed dust and degreased. If manufacturers have added special lubricating additives to the plastic, an adhesion promoter can be used to improve adhesion.

Aligning the bumper parts to be connected as much as possible, from the front side the seam is sealed with tape (preferably foil-coated). Self-adhesive tape will fix the plastic fragments and prevent glue from flowing out.

The bumper is turned face down and the seam is filled with adhesive. To improve the effect on top of the seam, a polymer or metal mesh moistened with the same glue is applied to the inner surface of the bumper. The polymerization (hardening) time for different adhesives is different, it can be from 15 minutes to several hours. During this entire period, it is necessary to ensure the immobility of the glued fragments.

Carefully apply the two-component glue and reinforcing material to the bonding site.

After the adhesive mass has completely hardened, you can proceed to further work on repairing the bumper (putty, primer, painting).

Experts distinguish between several types of plastics, which are used for the manufacture of modern car bumpers. For each type of plastic, there is the most suitable adhesive composition. Therefore, when choosing glue when buying, you need to know exactly which polymer forms the bumper structure (its marking), choosing an adhesive specifically for this type of plastic.

If you choose the right adhesives by brand or brand, you should pay attention to such products.

WEICOIN constraction. Adhesive compositions are distinguished by high strength indicators. The polymerization time is limited to a few minutes. Reliably bonds most types of plastics and other polymers. Resistant to temperature extremes.

Power Plast. The most versatile for plastic products. The adhesive is so strong that it can reliably fill in dents and chips. Long-lasting result and resistance to atmospheric influences.

AKFIX. Bonds plastic fragments even without preliminary preparation. It cures in the presence of moisture, so the surfaces to be glued should be wetted. Complete curing takes just a few seconds. The glue is very durable and the most comfortable to use.

Moment. Domestic adhesive composition. Differs in the versatility and reliability of adhesive joints. Requires careful preparation of the work surface.

As you can see, it is not only possible to repair a plastic bumper by gluing, but there is also something to do. Moreover, the process is quite accessible for independent execution, the main thing is to choose the right glue.Bumper damage is a common vehicle breakdown. You can get a hole not only as a result of an accident, but also simply unsuccessfully drove onto a curb or inattentively parked: posts, low fences and other protrusions often lie in wait for motorists in the yards.The easiest way to repair is to replace the part, but not everyone is ready to go for such an expensive procedure. Alternatively, the hole can be sealed or sealed. Both methods are effective.If the method of cold mechanical pressing (molding) was used in the manufacture of the bumper, then it will not work to seal the crack. In this case, special types of glue come to the rescue. The plus is that the repair can be easily done with your own hands.In this article, we will analyze in detail how to glue the bumper, how to choose the glue for repairs and how to prepare the surface so that you can carry out the necessary repairs yourself.The quality of the gluing directly depends on the quality of the selected glue. Drying, the glue turns into a full-fledged polymer layer. The idea is that after hardening, the adhesive has the same properties as the bumper. For repairs of this kind, special adhesives based on polyurethane or epoxy resin are used.What is important to pay attention to:

The adhesive must have high adhesion (adhesion of surfaces) to the plastic.

If heating is used during painting, the heating should not change the properties of the adhesive in the seams.

Thermoactive and thermoplastic adhesives can be used if the bumper is painted immediately after the repair.

Below are several high-quality and effective adhesives:

Weicon Construction (high strength and elasticity, resistance to various weather conditions).

AKFIX (high quality and strength, does not require prior priming, suitable for spot bonding).

Power plast (easy to use, gives reliable results).

Moment (high quality bonding, low cost, waterproof but toxic).

Two-component compound for gluing plastics 3M (possesses high adhesion to most plastics, does not spread, it is easy to grind and paint).

If the bumper is made of fiberglass, then the crack will be covered with a patch made of fiberglass, and it is necessary to use epoxy (polyester) resin.In any case, the material must be selected for a specific plastic. Before gluing to finishing, do a test gluing to check.A reliable and durable repair requires proper preparation of the part and adherence to the procedure at all stages: from the selection of glue to painting and sanding.Before proceeding with any manipulations, the bumper from the car must be removed (except for the body kits broken in many places, they must first be fastened and then removed), and also check what it is made of in order to get the desired effect. This information is indicated on the stamp, which is applied to the inside of the product.The first stage of the repair will be surface preparation:

Clean surfaces from dirt, dust, oil and other contaminants.

Dry the part thoroughly.

It is important to degrease the entire surface of the part or treat it with a special chemical composition.

Sand the surface to be repaired with an abrasive material or grinder.

The edges of the cracks can be drilled to prevent further expansion.

If you carefully approach the issue of preparation, the glue will adhere better to the surface, which will increase the strength of the repaired product.The surface is ready, now we are starting to repair.

Cover the damaged area with a primer and wait until it is completely dry, or seal the outer part of the bumper with foil so that the adhesive does not leak out. After the glue dries, remove the foil.

Carry out primary bonding from the inner surface of the bumper using special compounds with reinforcing properties. If a primer has not been made, then the damaged areas must first be carefully combined.

Then you need to apply the adhesive mixture to the front of the part.

The adhesive is applied evenly on both surfaces to be glued.

To make the seam stronger, it makes sense to stick on a metal or synthetic mesh impregnated with glue from the inside.

Different adhesives require different drying times, see instructions.

So, the glue is dry, but the appearance is still far from ideal. We proceed to the final stage.

We remove excess material (by cutting or grinding).

We prepare the product for painting using a primer, putty or other materials.

Painting the part in accordance with the plastic painting technology.

Almost any car enthusiast can fix a bumper with glue at home without harming the family budget. In terms of reliability, the sealed part will not be inferior to the sealed one.There are many options available on the market and everyone can find the right adhesive.We advise you to watch another method for repairing bumpers in this video:

Bumper repair with glue

So, after you have purchased the necessary glue, you can start gluing. This process consists of the following steps:

Bumper seams

Although this method is simple and cheap, it is used less and less. First of all, this is due to the duration of the epoxy resin hardening, since complete hardening occurs in 24 hours. Among the shortcomings, it is also necessary to note the exactingness to the ambient temperature (at least 15 ° C) and the need to observe precautions when working with fiberglass. However, the undoubted advantage is that by gluing with fiberglass, you can increase the rigidity of the bumper. This technology is similar to the glue repair technology, except for a few points:

Unlike the previous method, where the shape was only supported by the aluminum foil, the broken bumper fragments need to be stitched together. This is done with a wire. We drill holes at the edges of the damaged area and pass a wire through them, bring out the "antennae" to the outside and twist them together.
To ensure a better fit of the fiberglass to the bumper, clean the inside with a wire brush. Thus, we remove "burrs" and create additional surface roughness and, therefore, increase the contact area.
Fiberglass is glued in 4-6 layers. Patterns from it must be done in advance, taking special care. Be sure to wear gloves, as handling fiberglass creates fine dust that can cause severe irritation if it comes into contact with the skin, eyes or respiratory tract.
Thoroughly saturate all layers of fiberglass with resin and avoid air voids between them.
After the resin has completely solidified, the wire that remains on the outside is cut off and the bumper is prepared for putty and painting.

Preparing to repair a bumper with fiberglass

When the bumper is damaged, it often happens that the broken off fragments are simply lost or crushed into many parts. In this case, repair with glue will be impractical or simply impossible. Then repair comes to the rescue using lamination. In general, this process is a cross between the two methods described above. The only difference is that a reinforcing mesh is used here, previously impregnated with a special adhesive, is glued from the inside in two or three layers. The gap remaining from the outside is filled with the same adhesive or completely putty.

The final stages of the repair are putty and painting.At first glance, the most important steps have already been passed and these procedures are not critical. But this is a delusion. Restoration of putty and paintwork in compliance with all standards is necessary not only to recreate the original appearance of the bumper, but also to protect the seams from the negative effects of the environment (high humidity, chemically aggressive environment, mechanical stress, minor damage, etc.). But if it is still possible to putty the bumper with your own hands, then difficulties may arise with painting. Therefore, if you are not sure that you can do it efficiently, then it is better to contact the professionals at the service station.

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Bumpers are made of active plastic and they are the ones that lend themselves best to gluing. You almost always need to be prepared for the fact that you will have to repair the stubborn part of the car. You can prepare for such a procedure in advance. You can seal the hole at home by preparing tools and materials. With guidance and a sequence of actions, the process will not be very difficult, but it is very important to adhere to the rules of cleanliness and follow the procedures in a safe manner.

How to glue a damaged bumper? The high quality of the fastening depends on the adhesive. High-quality brands of glue are capable of high-quality gluing of parts, strong connection of fragments. Once cured, the adhesive should have the same properties as the bumper material. Thermosetting and thermoplastic adhesives can be used if the bumper is to be used for painting. Using such glue, you can be sure that the seams will not lose strength, so it is better to do both painting and repairs together.

The tools for the job can be different. In order to do the job fully, you will have to stock up on a sharp knife, an electric hair dryer, a soldering iron and brushes - they will come in handy at the final stage of work when painting. Preparation includes the preparation of fragments that are to be glued. Plastic surfaces at the joints should be greased with adhesive. Therefore, first the bumper is washed and the bonding site is shaped.

The first stage of work is a thorough preparation of the surface. The crack should be degreased, and the repaired area should be plastered. Bonding is as common as welding and is the best solution for repairing bumpers made of thermosetting plastics. How to glue the bumper, does the choice of glue affect the quality of the procedures performed and does the glued material affect the choice of adhesive? Modern adhesive compositions make it possible to repair both plastic bumpers and thermosets.

Most bumper adhesives are high molecular weight compounds, and once they cure, they turn into a full polymer layer. The choice of adhesive affects the quality of the repair. The adhesive must have high adhesion to the plastic, and after bonding, all parts of the bumper get the same physical properties. The strength is checked by test gluing. If the coloring will involve the application of heat treatment and baking, the heating should not cause changes in the properties of the joint.

Preparation for work greatly affects all subsequent actions and the strength of the connection. The maximum possible wettability of the surface must be achieved in advance, so the adhesive will adhere well to the surface and saturate the parts to be joined. To achieve these goals, the bumper is thoroughly washed, dirt is removed, the edges and edges must be machined with a milling cutter or abrasive wheel. The contact area increases, the bond strength increases. Degreasing also gives a positive result and they are carried out with the help of chemicals.Sometimes special chemical additives are added to the bumper material, which can reduce adhesive adhesion. It is imperative to remove them, and for this the surface is subjected to repeated processing with a special chemical composition.

Difficult-to-bond plastics may be difficult to handle. For it, special formulations are used that are able to stimulate adhesion. The quality of the preparation of the treated surface can be verified by assessing the wettability. If a solution of ethyl alcohol is applied to it, the diameter of the spot should be small, up to 35 millimeters. Before gluing, the front of the bumper is covered with aluminum foil, which fixes the adhesive and prevents it from flowing out. The foil is removed after the glue has dried.

How to glue the bumper and what steps should be performed so that at the end of the work you can enjoy the solidity of the structure and the invisibility of the seams? The gluing process should be carried out in such a way that the amount of glue that is applied to the parts is sufficient and optimal. Too thin an adhesive layer may result in the bumper and adhesive materials drying out and not achieving the same physical properties. The difference in stiffness can cause a violation of the paintwork at the junction after installing the finished and painted bumper, even with slight deformations. Different coefficients of glue and material become visible during heating - cooling in winter and drying in summer in the sun.

The adhesive is applied in an even layer on both surfaces, which will be adjacent to each other. To make the seam stronger, a metal or synthetic mesh is glued to the bumper from the inside, which is also impregnated with an adhesive. The glue hardens within ten minutes, and sometimes up to several hours. A secure fit must be ensured in advance to ensure that there is no movement of parts after fixation.

How to glue the bumper, which is very damaged and a whole piece of plastic is missing? Lamination includes the restoration of the missing piece of the bumper. The edges are processed as when gluing. 2-3 layers of reinforced mesh are installed inside the bumper, which is impregnated with an adhesive. The gap is filled with the same mesh. Then putty is applied. Sometimes special inserts made of polyester resins are used to restore the missing part, which can be reinforced with fiberglass or mesh.

With any repair, the last stage is involved, which is designed to restore the appearance of the car. Excess coating material is removed or sheared off, sanding can only be used at low speed as it can damage and melt the plastic. The products to be painted are prepared using a putty, primer and similar materials. If they are not used, cracks and delamination may appear during the operation of the bumper. The car bumper is painted according to the painting technology. Varnishes and enamels can even be used that are not intended for plastic, however, a plasticizer must be added to them.

For painting, use regular enamel or textured paint to give roughness. If you want to achieve painting in the color of the body, then the primer is applied in one more additional layer.

In this video, you can see how the glue reliably adheres plastic parts.

Video (click to play).