The right glass glue depends on the type of glass, what you bond it to, and how visible the joint is. The best glue for one job often fails on another. This simple guide covers the main glass glue types. It also covers when to use each one and how to apply them cleanly at home.

Glass is a tricky substrate. It is smooth and non-porous, so adhesives struggle to grip. Many joints also need to stay clear. Pick a glue suitable for glass and you can repair broken glass, fix mirrors, or stick glass to wood, metal and other materials with a strong bond.

What is the best glue for glass?

The best glass glue for most repairs is a cyanoacrylate super glue with a UV-resistant additive. For higher-load joints, use a clear two-part resin. Cyanoacrylate gives a fast, near-invisible bond. Resin gives strength and chemical resistance. For wet or flexible joints, switch to silicone or MS polymer.

What kind of glue is good for glass?

Glues and adhesives suitable for glass fall into a few families. These include cyanoacrylate (super glue), two-part epoxy resin, UV-cure glass glue, silicone, MS polymer, and specialist contact adhesives. Each has a different strength, working time and clarity. Match the adhesive to the job, not the cartridge to hand.

How to choose the right glass glue

The right glass adhesive depends on substrate, joint type, load, environment and visibility:

• Substrate: glass-to-glass, glass to wood, glass to metal, or glass to ceramic
• Joint type: clear repair, structural fix, sealed joint or flexible bond
• Load: a decorative pane carries little, while a glass shelf carries weight
• Environment: indoor, outdoor, damp areas or constant water contact
• Visibility: invisible repairs versus a hidden joint in a frame

Get those clear before buying. A super glue glass repair on a fish tank will not hold. A slow-cure resin on a crystal vase will tide-mark before it sets. Always check the product information on the maker's datasheet. Online glass repair content varies in quality. Real trade datasheets are reliable. Thin articles topped with an artificial content title are not. Trust the spec sheet first.

Glass glue products for different jobs

The five glass adhesive types below cover almost every glass repair or bonding job around the home.

1. Super glue and cyanoacrylate for crystal repairs

Cyanoacrylate glass glue is often sold as super glue or superglue. It gives a near-invisible bond on clean glass surfaces. Loctite Glass Glue is the best-known example, with a clog cap that resists drying. Initial hold takes seconds. Full strength reaches within about 24 hours.

Cyanoacrylate suits small, clean breaks on crystal, china and glassware. Apply a thin film and press for 30 seconds. Wipe any excess glue with a clean cloth. Avoid it for items under heavy use, since the rigid bond can fail under shock load.

2. Epoxy for structural bonds

Two-part epoxy gives the strongest structural bond on glass-to-glass and glass-to-metal joints. Mix the resin and hardener in equal parts. Apply to one face, then clamp lightly until cure. A clear grade keeps the joint neat on visible repairs. Working time runs five to thirty minutes by grade, so check the datasheet.

3. UV-cure glass glue for invisible repairs

UV-cure glass glue is the trade choice for fine, near-invisible repairs. The clear adhesive stays liquid until exposed to UV light. It then sets in seconds. Glaziers reach for it on jobs like a rear view mirror onto a windscreen. They also use it for crystal-clear joints in display cabinetry.

Apply a tiny bead and position the glass pieces. Pass a UV lamp over the joint for around 30 seconds. The set bond is glass-clear, resists yellowing and offers good long-term reusability of the original piece.

4. Silicone and MS polymer for flexible joints

Use a neutral-cure silicone or MS polymer where the joint needs to flex or seal against water. These products bond glass to itself and to many other surfaces. They stay flexible after cure and resist water and mild chemicals.

Common uses include shower screens, glass splashbacks, fish tanks and conservatory glazing. Skin time runs a few minutes. Full cure takes 24 hours or longer. Browse the STICK2 sealants collection for cartridge options.

5. Loctite glass glue and similar branded options

Loctite Glass Glue and Loctite Glass Bond are popular consumer cyanoacrylate products for general glass repair. Gorilla Glue and Gorilla Contact Adhesive also turn up here. Gorilla Glue's polyurethane formula foams as it cures, so it suits hidden joints rather than visible repairs.

For trade users, the STICK2 cyanoacrylate range gives the same clean bond at trade pricing. It handles glass alongside other substrates. The STICK2 adhesives collection covers cyanoacrylate, structural resin and specialist options in trade quantities.

How to glue broken glass back together

Putting broken glass back is fiddly but doable on clean, dry pieces. Work in good light. Prepare both sides of the break before any adhesive comes out of the tube.

1. Wipe both fracture faces with isopropyl alcohol or glass cleaner and let dry
2. Apply a thin bead of glass glue along one face only
3. Press the two glass pieces together, line up edges by feel, and hold for 30 seconds
4. Wipe away any excess glue with a clean cloth before it skins
5. Support the joint with masking tape until full cure

For thin glassware, cyanoacrylate gives the cleanest result. Thicker structural breaks call for UV-cure or a two-part resin. With items glued before, scrape off any old adhesive with a blade or acetone. Then apply a fresh clear glue.

Bonding glass to wood, metal and other surfaces

Different substrate pairings call for different adhesives. The shortlist below covers the most common combinations. Examples include kitchen glassware, glass shelves on book cases and panels in stained-glass painting projects.

• Glass to wood: MS polymer or a two-part structural resin, since both grip wood without stressing the glass
• Glass to metal: structural resin or MMA acrylic, both of which handle the thermal movement difference
• Glass to ceramic: cyanoacrylate for small fixings, silicone for flexible joints
• Glass to glass: UV-cure for invisible repairs, cyanoacrylate for quick fixes
• Glass to plastic: a specialist contact adhesive rated for both substrates

For more on bonding across multiple substrates, see the wider tapes, adhesives and sealants collection.

Expert tip for a durable bonding result

The single expert tip that saves most failed glass repairs is simple. Clean both glass surfaces with isopropyl alcohol before any glue goes near them. Fingerprint oils, dust and old release agents all block adhesion. After cleaning, do not touch the bond faces with bare hands. This one expert step does more for durable bonding than switching brands ever will. For safe handling of cyanoacrylate and resin adhesives, follow the HSE's COSHH guidance.

How to permanently glue glass

For a permanent fix, use a two-part resin or UV-cure glass glue on cleaned, primed surfaces. Cyanoacrylate is permanent in normal use. It breaks down under prolonged moisture or UV outdoors. Silicone sealants stay permanent on shower screens and glazing because they flex with thermal cycling.

For a permanent repair to glass in daylight, use a UV-resistant adhesive rated for outdoor or wet environments. With crystal pieces, a UV-cure product gives the cleanest invisible result.

Does glass repair glue really work?

Yes, modern glass repair glue really does work on clean, well-prepared surfaces. A cyanoacrylate or structural resin bond on a small, clean break can restore a crystal piece for everyday use. The bond will not match the original glass. With sensible use, it lasts indefinitely. Failures almost always trace back to dirty bond faces, the wrong glue choice, or a rushed cure.

Choosing the right glass adhesive for your project

The shortlist below maps each common job to the right glass glue type:

• Small, clean break in glassware or crystal: cyanoacrylate super glue with a clog cap
• Structural or load-bearing joint: two-part structural resin
• Invisible repair on display glass: UV-cure glass glue
• Flexible joint or wet area: neutral-cure silicone or MS polymer
• Glass to wood, metal or mixed substrates: MS polymer or MMA acrylic

This guide rounds up trade-grade glass glue and related adhesives at STICK2. Browse the STICK2 adhesives range, or contact the STICK2 team for advice on a specific project.

Find the right glass glue for your project below.