Okay, your summary is very comprehensive and detailed!This covers almost all the core differences and key points of use between glass glue and nail-free glue.In order to present it more clearly and intuitively, I will help you refine the core differences and add a little detail.：
Summary table of Core Differences
| Characteristics | Glass glue (Silicone Sealant) | Nail-free glue (Construction Adhesive / Grab Adhesive) |
|---|---|---|
| *Main ingredients * | Silicone (silicone polymer) | Synthetic resin (such as polyurethane, modified silane, acrylic acid, etc.) |
| *Cured form | / Elastic colloid (soft, ductile) | hard plastic shape ** (hard, high rigidity) |
| Core functions | Sealed and waterproof > Bonding | Strong bonding and load-bearing > Filling |
| *The best applicable scenario * | Requires a sealed gap that is waterproof, moisture-proof, weather-resistant, and allows displacement / * Requires strong, fast, and punch-free bonding to fix load-bearing objects * | |
| * Typical applications / Kitchen and bathroom sink/countertop edge sealing Shower room/bathtub joints Window frame/door frame gap sealing Glass and wall joints Partial caulking repair (need to choose the right type) | Wall paste hooks, picture frames, mirrors Ceramic tiles/ smooth surface fixed racks, towel racks Paste skirting lines, decorative lines Bond various materials (wood, metal, plastic, stone, ceramics, etc.) | |
| *Construction tools * | Glue gun (required) | Can be squeezed by hand (convenient, glue gun is more labor-saving and uniform) |
| Surface treatment /Need to be smoothed (finger/ scraper to smooth) | Dot-shaped, strip-shaped, grid-shaped, S-shaped smear | |
| * Initial curing time * / About 12 hours | about 2 hours (faster) | |
| *Fully cured / maximum strength time * / About 24 hours (or longer) | about 6-8 hours (faster) | |
| *Weather resistance | / *Excellent * (resistance to high and low temperatures, ultraviolet rays, rain and snow) / Good (but extreme environments may not be as good as silicone rubber) | |
| * Water resistance * | *Excellent (core advantage) / good * (can be waterproof, but long-term soaking in water or water pressure sealing is not as good as silicone rubber) | |
| * Mildew resistance * | You need to choose the mildew-proof type (ordinary type is easy to mold) | Usually it has a certain mildew resistance / |
| *Load-bearing capacity | /Weak (not suitable for load-bearing) | strong (designed for load-bearing, up to tens of kilograms) |
| * Anti-vibration / shock | / Good (elasticity can absorb vibration) | General (rigidity, severe impact may collapse) |
| High temperature resistance / good ** (usually a wider temperature range) / Depends on the specific formula (some high temperature resistant types can reach more than 100°C) | ||
| * Demolition difficulty * | Easier (utility knife cutting, alcohol wiping residual glue) | Difficult (requires a hot air gun to soften or violently eradicate, it is easy to hurt the base layer) |
| *Environmental protection | /Acidic glue has a pungent odor (antibacterial / mildew-proof, odorless and more environmentally friendly) | Usually odorless or low-flavored (no volatilization after curing) |
| Price | The ordinary type is lower (10-20 yuan /stick), the mildew-proof type is doubled | the unit price is higher (20-40 yuan /stick), But the amount is saved |
/ Shelf life / About 18 months (unopened) / about 24 months (unopened) |
Highlights and important supplements in your summary
- Clear positioning of core functions： Glass glue: Sealing and waterproof is the top priority, and bonding is secondary or auxiliary. Nail-free glue: Strong bonding and load-bearing is the top priority, and filling and sealing are secondary or attached.
- The difficulty of demolition varies greatly: This is very important!The “nail-free” convenience of nail-free glue is at the expense of extremely difficult non-destructive removal in the future. Be sure to confirm the location before installation.Glass glue is relatively easy to handle.
- Mixed use strategy: The “bathroom racks first fix the main body with nail-free glue, and then seal the edges with mildew-proof glass glue” you mentioned is Best practice!The perfect combination of the advantages of the two (load-bearing + waterproof and mildew-proof).
- Primary treatment is essential: “You can’t use it directly on oily surfaces” is the golden rule.A clean, dry and firm base layer is the foundation for successful bonding and sealing.Dust, oil, water stains, and loose objects are the biggest enemies.
- Temperature impact: Low temperature construction (<5°C) will seriously affect the curing speed and final strength of both.Soaking the hose in warm water is an effective technique for winter construction.
- Material compatibility test: For special materials (especially plastics, paint surfaces, and soft materials), small-area testing is very necessary.Certain nail-free glue solvents may corrode specific plastics or paints.
- Mildew prevention is the key point: In humid areas (especially shower rooms), You must choose neutral silicone glass glue that is clearly marked “mildew-proof”.Ordinary glass glue or acidic glass glue can easily become moldy and black in a humid environment.
- See the product description:Be sure to read the product description carefully when purchasing and pay attention to it.：
- Glass glue: is it neutral?Is it mildew-proof?Applicable substrate?Weather resistance level?color?
- Nail-free glue: load-bearing capacity?Applicable substrate?Curing time?Temperature range?Is it suitable for humid environments?
Simple Decision Guide
Need to block the gap to prevent water/air from passing through? Choose glass glue (especially mildew-proof neutral silicone glue for humid areas of kitchens and bathrooms). Need to stick things firmly to the wall/smooth surface without falling off?Choose nail-free glue. Must it be both glued and waterproof and sealed?(Nail-free glue, load-bearing body + glass glue to seal the edge).