How to Stick a Glass Splashback to a Wall: A Complete Installation Guide

Glass splashbacks have become increasingly popular in modern kitchens and bathrooms, offering a sleek, hygienic, and easy-to-clean alternative to traditional tiles. While professional installation is often recommended, many homeowners can successfully install glass splashbacks themselves with the right preparation, tools, and technique. This comprehensive guide will walk you through the entire process.

What You'll Need

Tools Required

Spirit level (at least 600mm long)
Measuring tape
Pencil for marking
Electric drill with masonry bits
Screwdriver
Clean cloths and paper towels
Rubber gloves
Safety glasses
Dust mask

Materials Needed

Glass splashback (pre-cut to size)
Wall plugs and screws (if using mechanical fixings)
Neutral cure silicone sealant (clear or matching color)
Degreasing agent or methylated spirits
Masking tape

Step 1: Preparation is Key

Measure and Plan

Before anything else, carefully measure your wall space and ensure your glass splashback is the correct size. Double-check all measurements, as glass cannot be easily trimmed once purchased. Consider the position of electrical outlets, switches, and any fixtures that may affect installation.

Prepare the Wall Surface

The wall surface must be completely flat, clean, and dry. Remove any old tiles, wallpaper, or loose paint. Fill any holes or cracks with appropriate filler and sand smooth once dry. The wall should be painted with a suitable primer and paint before installation, as you won't be able to paint behind the glass once it's installed.

Check for Level and Plumb

Use your spirit level to check that the wall is perfectly vertical and that any horizontal surfaces (like countertops) are level. Any irregularities will be magnified once the glass is installed.

Step 2: Mark Your Position

Using your measuring tape and spirit level, carefully mark the exact position where your glass splashback will be installed. Use a pencil to mark the corners and create reference lines. Double-check these measurements against your glass panel.

If you're installing multiple panels, ensure the gaps between them are consistent and level. Typically, a 2-3mm gap is left between panels for expansion and sealant.

Step 3: Apply the Adhesive

Choose the Right Adhesive

For glass splashbacks, use a high-quality Neutral cure silicone sealant. Avoid standard construction adhesives, as they may not provide adequate bond strength or could damage the glass backing.

Application Technique

Apply the adhesive in vertical strips or dots across the back of the glass, approximately 150-200mm apart. Avoid applying adhesive too close to the edges, as it may squeeze out when pressure is applied. Leave the adhesive about 25mm from all edges.

For areas behind cooktops or other heat sources, ensure your adhesive is rated for high temperatures.

Step 4: Position and Secure

Lifting and Positioning

Glass splashbacks can be heavy and awkward to handle. If possible, have a helper assist with positioning. Lift the glass carefully, avoiding twisting or bending, and align it with your marked reference points.

Apply Pressure

Once positioned correctly, apply firm, even pressure across the entire surface of the glass. Use a clean, flat tool like a wallpaper smoothing brush or rubber roller to ensure good contact between the adhesive and wall. Work from the center outward to expel any air bubbles.

Check Alignment

Continuously check that the glass remains level and properly aligned during this process. You typically have 10-15 minutes of working time before the adhesive begins to set, depending on temperature and humidity.

Step 5: Temporary Support (If Needed)

For larger or heavier panels, you may need temporary support while the adhesive cures. This can be achieved using:

Temporary brackets screwed into the wall below the glass
Props or supports from the floor
Masking tape to hold edges in place

Ensure any temporary supports don't put stress on the glass that could cause cracking.

Step 6: Seal the Edges

Once the glass is securely positioned and the adhesive has had time to set (usually 24 hours), apply silicone sealant around all edges. This prevents moisture ingress and provides a professional finish.

Use masking tape to create clean, straight lines, and tool the sealant with your finger or a specialized tool for a smooth finish. Remove the masking tape while the sealant is still wet.

Step 7: Final Cleaning

Clean the glass surface with a suitable glass cleaner, removing any fingerprints, adhesive residue, or sealant smears. Use a lint-free cloth for the best finish.

Important Safety Considerations

Glass Handling

Always wear safety glasses and gloves when handling glass. Toughened glass, while safer than standard glass, can still cause injury if it breaks. Never carry glass panels on your own if they're large or heavy.

Electrical Safety

If your installation area includes electrical outlets or switches, ensure the power is turned off before beginning work. Consider having an electrician relocate or extend outlets if necessary.

Weight Limitations

Ensure your wall can support the weight of the glass splashback. Plasterboard walls may require additional reinforcement or different fixing methods.

Common Mistakes to Avoid

Poor Surface Preparation

Rushing the wall preparation stage is the most common cause of installation failure. Take time to ensure the surface is perfectly clean, flat, and dry.

Incorrect Adhesive Choice

Using the wrong type of adhesive can result in poor adhesion or damage to the glass backing. Always use products specifically designed for glass applications.

Inadequate Support During Curing

Failing to provide adequate support while the adhesive cures can result in the glass sliding or falling, potentially causing injury and damage.

Over-application of Sealant

Applying too much sealant around edges can create an unprofessional appearance and may be difficult to clean.

Maintenance Tips

Once installed, glass splashbacks are relatively low-maintenance. Clean regularly with appropriate glass cleaners, avoid abrasive cleaners or tools that could scratch the surface, and check sealant periodically for any signs of deterioration.

When to Call a Professional

While many homeowners can successfully install glass splashbacks, consider professional installation if:

You're working with very large or heavy panels
Complex cuts around outlets or fixtures are required
You're uncomfortable working with glass
The installation involves structural modifications
Local building codes require professional installation

Conclusion

Installing a glass splashback can transform your kitchen or bathroom while providing a practical, hygienic surface that's easy to maintain. With careful preparation, the right materials, and attention to detail, this can be a rewarding DIY project. Remember that patience during the preparation and curing stages is crucial for a successful, long-lasting installation.

The key to success lies in thorough preparation, using quality materials, and taking your time throughout each step of the process. If you're unsure about any aspect of the installation, don't hesitate to consult with professionals who can ensure your splashback is installed safely and correctly.