A torn off side rear view mirror is a problem that almost every fifth car owner faces. The reasons can be different: from a banal mechanical shock to natural wear and tear of the factory adhesive. But regardless of the reason, the result is the same - the mirror is loose or has fallen off completely, and driving without it is not only inconvenient, but also unsafe (according to traffic regulations, the absence of a rear-view mirror is regarded as a malfunction in which the operation of the vehicle is prohibited).
Many drivers in such a situation immediately go to a service center, where they charge from 1,500 to 5,000 rubles for replacing a mirror, depending on the car model. However You can glue the side mirror yourself, saving time and money. The main thing is to choose the right glue and follow the technology. In this article we will analyze 5 proven fastening methods, we’ll compare their pros and cons, and also tell you how to avoid common mistakes that cause the mirror to fall off again after a week.
You will be surprised, but in 70% of cases the mirror comes off not because of bad glue, but because improper surface preparation. Even the most expensive composition will not hold the part if there are traces of old glue, grease or dust on the plastic or metal. Therefore, the first step - thorough cleaning - is often more important than the choice of adhesive material itself.
Why the side mirror falls off: 3 main reasons
Before you run to the store for glue, let’s figure out why the mirror came off. This will help you choose the right repair method and avoid repeated breakdowns.
✅ Mechanical impact - the most obvious reason. A blow from a branch, poor parking, or even a strong gust of wind at speed can tear the mirror off its mount. In this case, not only the adhesive joint often breaks, but also the plastic holder (the so-called “leg” of the mirror). If the crack is visible to the naked eye, glue will not help here; you will need to replace the holder or the entire mirror assembly.
✅ Aging of factory glue - a problem with cars older than 5–7 years. Over time, the adhesive composition loses its elasticity, becomes brittle and crumbles. This happens especially quickly when there are temperature changes (for example, if the car spends the night outside in winter). In such cases it is enough renew the adhesive layer, but it is important to remove all remnants of the old composition - they interfere with adhesion.
✅ Poor quality repairs — if the mirror has already been glued before, there is a high risk that the craftsmen saved on materials or did not follow the technology. For example, we used cyanoacrylate glue (type "Moment") instead of a specialized automobile one. This glue does not tolerate vibrations and moisture well, so the mirror falls off again after a few months.
⚠️ Attention: If the mirror comes off along with a piece of body paint, do not try to glue it back! In this case, you first need to restore the paintwork (putty, prime, paint), otherwise corrosion will begin under the glue.
Top 5 adhesives for side mirrors: comparison and recommendations
Not all adhesives are created equal for mirrors. Some cannot withstand vibrations, others are afraid of moisture, and others take too long to dry. We tested 5 popular formulations and compiled a table with their characteristics:
| Glue | Type | Setting time | Strength | Cost (per 50 ml) | Pros | Cons |
|---|---|---|---|---|---|---|
| 3M Scotch-Weld DP8005 | Two-component epoxy | 24 hours | ⭐⭐⭐⭐⭐ | ~1 200 ₽ | ✔ Withstands +120°C ✔ Vibration resistant ✔ Water resistant |
✖ Dear ✖ Requires mixing |
| Loctite 406 | Cyanoacrylate | 5–10 minutes | ⭐⭐⭐ | ~400 ₽ | ✔ Dries quickly ✔ Easy to use |
✖ Brittle in cold weather ✖ Doesn’t stick well to plastic |
| Permatex 84109 | Polyurethane | 1 hour | ⭐⭐⭐⭐ | ~600 ₽ | ✔ Elastic ✔ Plastic holds well |
✖ Takes longer to dry ✖ Does not like high temperatures |
| ABRO ES-666 | Epoxy | 12 o'clock | ⭐⭐⭐⭐ | ~350 ₽ | ✔ Cheap ✔ Universal |
✖ Takes a long time to dry ✖ Requires degreasing |
| Adhesive-sealant SikaFlex-252 | Polyurethane | 3–4 hours | ⭐⭐⭐⭐ | ~800 ₽ | ✔ Seals seams ✔ UV resistant |
✖ Gets dirty ✖ Requires a pistol |
🔹 Best choice for most occasions — 3M Scotch-Weld DP8005 or Permatex 84109. They provide maximum strength and durability. If you need to save money, take it ABRO ES-666, but be prepared to wait a day for it to dry completely.
🔹 Cyanoacrylate adhesives (type Loctite 406) are only suitable for temporary repairs - they cannot withstand constant vibrations and temperature changes. They can be used if the mirror falls off on the road and you need to get home.
🔹 Adhesive sealant (for example, SikaFlex-252) is convenient if you need not only to glue a mirror, but also seal the joints (relevant for heated mirrors, where it is important to prevent moisture from entering).
For long-term repairs, choose epoxy or polyurethane adhesives. Cyanoacrylate compounds are suitable only as a temporary solution.
Step-by-step instructions: how to glue a mirror correctly
Now let's move on to practice. To ensure your mirror lasts for years instead of days, follow these instructions. The process will take from 1 to 24 hours (depending on the glue), but the result is worth it.
📌 You will need:
- 🔧 Selected glue (see table above)
- 🧴 Degreaser (White spirit, Isopropyl alcohol or Antisilicone)
- 🧻 Lint-free wipes or microfiber
- 🔪 Plastic spatula or knife (to remove old glue)
- 📏 Masking tape (for fixing the mirror while drying)
- 🧤 Gloves (glue may irritate skin)
🔧 Step 1. Dismantling and cleaning
- Remove the mirror from the holder (if it is still dangling). It is usually secured with latches or screws - carefully pry it off with a screwdriver.
- Remove any remaining old glue from holder and body. Use a plastic spatula or wooden stick to avoid scratching the surface. Never use metal tools - they damage the paintwork!
- Degrease both surfaces. Apply degreaser to a cloth and thoroughly wipe the bonding areas. Repeat 2-3 times.
🔧 Step 2. Preparing the glue
- If you use two-component adhesive (for example, 3M DP8005), mix the components in the proportion indicated on the package. Do this on a clean surface (such as a piece of glass).
- For one-component adhesives (Permatex, SikaFlex) simply cut the tube spout to the desired diameter and insert it into the gun.
🔧 Step 3. Applying glue and fixing
- Apply glue pointwise on the mirror holder (not on the body!). For epoxy compounds, 3-4 drops are enough, for polyurethane compounds - a thin layer over the entire area.
- Press the mirror tightly to the body and secure with masking tape. For reliability, you can use clamp (if you have access) or a weight (for example, a water bottle).
- Remove excess glue with a cloth soaked in degreaser.
🔧 Step 4. Drying
- Leave the mirror alone for the time specified in the instructions for the glue. Do not touch it or test its strength - this may disrupt the connection.
- If it is cold outside (below +10°C), move the car to a warm garage or use heat gun (but not a hair dryer!) to speed up polymerization.
All remnants of old glue have been removed|Surfaces have been degreased 2-3 times|Glue is applied pointwise, without excess|The mirror is fixed with tape or a clamp|The room temperature is above +15°C-->
Typical mistakes: why the mirror falls off again
Even if you used expensive glue, the mirror may fly off within a week. In 90% of cases these errors are to blame:
🚫 Savings on preparation
- 🧽 Old glue has not been removed. Many people simply apply a new layer on top of the old one, but this is like building a house on sand - the connection will not be strong.
- 🧴 Poor degreasing. Even invisible traces of fat or silicone reduce adhesion by 2-3 times.
🚫 Wrong choice of glue
- 🔥 Cyanoacrylate in the cold. Super-Moment adhesives become brittle at −10°C and crumble due to vibrations.
- 💧 Epoxy glue without sealing.
🚫 Violation of gluing technology
- ⏳ Exploitation too early.SikaFlex gains strength within 24 hours, but many people remove the tape after 2 hours.
- 🌡️ Low temperature repair.
⚠️ Attention: If, after gluing, the mirror “walks” when pressed, do not expect that it will “get used to it over time.” This is a sign that the glue has not adhered to the surface. It’s better to re-glue it right away than wait for it to fall off on the highway.
What to do if the mirror falls off with a piece of plastic
Sometimes the mirror comes off along with a part plastic holder (the so-called "leg"). In this case, ordinary gluing is not enough - you must first restore the part itself. Here's what you can do:
🔧 Method 1: Epoxy resin + fiberglass
- 🛠️ Buy at a car store epoxy resin (eg Poxipol) and fiberglass.
- 🧩 Fold the broken parts of the holder, wrap them with fiberglass and soak them in resin.
- ⏳ Let dry for 12-24 hours, then sand with sandpaper.
🔧 Method 2: Soldering iron + plastic electrodes
- 🔥 If the holder is from thermoplastic (ABS, polypropylene), it can be soldered. Use a 40-60W soldering iron and solder for plastic (sold in 3D printing stores).
- ⚠️ Do not overheat the part - the plastic may become deformed.
🔧 Method 3: Replacing the holder
- 🔍 Find the holder article on the Internet by VIN code or car make. For example, for Toyota Corolla E150 the original holder costs ~1,500 ₽, and for VW Polo — ~2 000 ₽.
- 🛒 Order the part and install it instead of the broken one. This is more reliable than repairs.
How to determine the type of plastic holder?
There is usually a marking on the inside of the part:
PP - polypropylene (can be soldered),
ABS — ABS plastic (only glue or fiberglass),
PA - polyamide (special adhesives are needed, for example, Loctite 406).
If there is no marking, set fire to a piece of plastic: if it burns with soot and a burning smell, it’s ABS; if it burns cleanly, it’s polypropylene.
Alternative methods of fastening: when glue does not help
If the mirror falls off for the third or fourth time, the problem may not be with the glue, but with the fastening structures. In such cases, alternative methods help:
🔩 Bolt-on mounting
- 🔧 If the mirror holder is metal, you can drill holes and secure it M4–M6 bolts with nuts.
- 🛡️ To avoid damaging the paintwork, use rubber washers and sealant.
- ⚠️ Minus: not suitable for plastic holders - they may crack.
🧲 Magnetic mount
- 🧲 Buy neodymium magnets (diameter 10–15 mm) and glue them into the mirror holder and the corresponding place on the body.
- 🔄 The attractive force of magnets (5-10 kg) is usually sufficient to hold the mirror.
- ⚠️ Suitable for metal bodies only (not for plastic bumpers).
🔗 Additional bracket
- 🔧 Sold in auto stores universal brackets for mirrors (for example, from HELLA or Bosch). They are attached to the body with self-tapping screws, and the mirror is fixed to them with bolts.
- 💰 Cost: 800–1,500 ₽.
If the mirror falls off due to vibrations (for example, off-road), try applying glue not only to the mounting location, but also to the back of the holder, creating additional support.
How much does a service repair cost vs. on your own
Prices for gluing mirrors in car repair shops vary depending on the region and car model. Here are the average prices for 2026:
| Service | Cost (₽) | Time (hours) | Warranty |
|---|---|---|---|
| Gluing the mirror (without replacing parts) | 1 500–3 000 | 1–2 | 1–3 months |
| Replacing the mirror holder | 2 500–5 000 | 2–3 | 6 months |
| Holder repair (soldering, fiberglass) | 2 000–4 000 | 3–4 | 1 month |
| Installing a universal bracket | 3 000–6 000 | 2–3 | 1 year |
💰 Do-it-yourself repairs are 3–5 times cheaper:
- 🧴 Glue (3M DP8005) — ~1,200 ₽ (enough for 2–3 repairs).
- 🧴 Degreaser + napkins — ~200 ₽.
- 🔧 If you need a holder - ~1,500–3,000 ₽ (depending on the car model).
⏱️ By time DIY repairs take longer (due to drying of the glue), but do not require a service appointment or travel.
FAQ: Frequently asked questions about gluing mirrors
Is it possible to glue a mirror with second glue (such as “Moment”)?
❌ No, this is a temporary solution. Cyanoacrylate adhesives do not withstand vibrations and temperature changes. At most, the mirror will last 1-2 weeks, then it will fall off again. For long-term repairs, use epoxy or polyurethane compounds.
The mirror fell off along with a piece of the body (with paint). What to do?
🔧 First restore the paintwork:
- Strip the damaged area to bare metal.
- Apply primer (eg Body 960).
- Paint and varnish (or use repair pencil).
- Only after the paint has completely dried (24 hours) glue the mirror.
If the paintwork is not restored, corrosion will begin under the glue.
How to glue a mirror if it’s −20°C outside?
🌡️ At low temperatures, most adhesives do not polymerize properly. Solutions:
- 🚗 Drive the car into a heated garage or box (optimally +20°C).
- 🔥 Use heat gun (not a hair dryer!) for local heating of the gluing area.
- ⏳ Choose an adhesive with a low temperature formula (e.g. 3M DP8005 withstands gluing down to −10°C, but takes longer to dry).
❄️ Under no circumstances heat the glue with an open fire (lighter, burner) - this will ruin its properties!
How long can you not drive after gluing?
⏳ Depends on the glue:
- Cyanoacrylate (Loctite 406) — you can go in 1 hour, but carefully.
- Polyurethane (Permatex 84109) - at least 3–4 hours.
- Epoxy (3M DP8005) - at least 12 hours (preferably 24).
🚗 If the mirror is heated, do not turn it on for the first day - heating may disrupt polymerization.
Is it possible to use liquid nails for a mirror?
⚠️ Not recommended. Liquid nails (eg. Moment Installation) are not intended for dynamic loads. They hold static structures (plinths, panels) well, but vibrations in the machine will quickly destroy the connection. It's better to use specialized automotive glue.