Most people look at a glass splashback and assume it's a job for someone else. It isn't, in the majority of cases. If you can hang a shelf and you're not the type to rush things, you can fit a glass splashback yourself and get a result that looks professionally done. There's no particular skill involved. What there is, is a clear process, a few non-negotiables, and one step that people skip constantly that causes problems down the line.
What You Will Need
Get all of this together before you start. Stopping to hunt for something when your hands are covered in adhesive is not a good situation.
- Mirror adhesive or neutral cure silicone (check your splashback supplier's recommendation)
- A notched adhesive spreader or caulk gun
- A spirit level
- A tape measure and pencil
- Masking tape
- Clean cloths and isopropyl alcohol or sugar soap
- A soft rubber mallet or padded block
- Matching coloured silicone for edge finishing
- A caulking tool or wet finger for smoothing silicone joints
At Rapid Splashbacks, all orders include adhesive so you have everything you need from the moment your kitchen glass splashback arrives.
Step One: Prepare the Surface
This is the step everyone skips. Don't be everyone.
Adhesive bonds to surfaces, not to grease, dust, or whatever's been accumulating on your kitchen wall since the last time you cleaned behind the hob. Kitchens pick up a thin layer of cooking grease on every surface in the room, including the walls, even when you can't see it. That invisible layer is enough to compromise the bond between the glass and the wall, and the result, usually several months later, is a splashback that starts pulling away from the wall in one corner and gets progressively worse from there.
Wipe down the entire area with isopropyl alcohol or sugar soap. Let it dry fully before you go near the adhesive. If you're fitting to painted plasterboard, check the paint is sound with nothing flaking or bubbling. Fitting over existing tiles, tap each one. Any hollow sound or any give when you press means that tile needs re-securing before the glass goes on. This step takes twenty minutes and it's the difference between a splashback that lasts fifteen years and one that causes you a headache before the year is out.
Step Two: Mark Your Position
Pencil, tape measure, spirit level. Mark out exactly where the glass is going before you open the adhesive. Glass is unforgiving if it goes on crooked because there are no grout lines to mask it. Unlike a tiled splashback where minor misalignments disappear into the joints, a glass panel makes every deviation from level obvious. Take your time. Double-check horizontal and vertical. If it helps to run masking tape along the boundaries so you can visualise it clearly, do that.
Step Three: Apply the Adhesive
Apply mirror adhesive to the back of the glass in blobs or horizontal lines across about 60 to 70 percent of the surface. Not a solid sheet. The glass needs a little give when it's pressed against the wall, and covering the entire back face can trap air and create uneven pressure. Leave clear gaps around any cut-outs for sockets or switches, adhesive near heat-generating areas is a problem you don't need.
One thing that catches people out: if your splashback has a painted or printed coating on the back, use a neutral cure silicone rather than a solvent-based adhesive. Solvent adhesives attack paint coatings over time. You won't see the damage immediately but it does happen, and by the time it's visible you're looking at a replacement rather than a repair.
Step Four: Position and Fix
Lift the glass into position and press it flat against the wall, distributing pressure evenly across the whole surface. Use the padded block to work across the glass so you're not concentrating force in one area. Check your level again before the adhesive starts to grip. That window is short. Once it starts to set, any adjustment disturbs the bond unevenly and can create weak spots.
For large panels, suction cups or props to hold the glass in place while the adhesive cures are genuinely worth the bother. Standing there holding a heavy sheet of glass perfectly still for twenty minutes by hand is grim.
Step Five: Finish the Edges
Wait for the adhesive to cure fully, minimum 24 hours, then seal every edge where the glass meets the wall, worktop, or adjacent surface with matching coloured silicone. Smooth with a damp finger or caulking tool and leave it alone until it cures before using the kitchen near it.
People treat this step as optional. It isn't. The silicone is a moisture barrier, and kitchens produce a lot of moisture. Condensation, steam from cooking, the occasional splash. Without a sealed edge, that moisture finds its way behind the glass over months and years. You'll see discolouration first, then mould on the wall behind the panel, then eventually the adhesive starts to give. The silicone bead is a twenty-minute job that protects the whole installation. Every joint. Not most of them.
Can You Fit a Glass Splashback Behind a Gas Hob Yourself?
Yes, but there's one thing you need to check before you start and it's not optional. Behind a gas hob, the clearance distance between the nearest burner and the glass surface matters. The standard minimum is around 65mm measured horizontally, but that figure can vary depending on the specific appliance. Check the installation instructions for your hob before you do anything else. If your gas hob is being newly installed by a Gas Safe registered engineer, ask them to confirm the correct clearance at the same time while they're in the kitchen anyway. All Rapid Splashbacks products are manufactured from toughened glass rated for heat resistance, so the glass itself isn't the concern. The clearance is. Don't guess at it.
Common Fitting Mistakes to Avoid
- Skipping surface cleaning. Grease is the most common cause of splashback failure. Clean the wall properly before you start.
- Using the wrong adhesive. Solvent-based adhesives damage painted glass coatings over time. Check compatibility before applying.
- No expansion gaps. Glass moves with heat. Don't fix it so rigidly there's no room for natural movement near the hob.
- Rushing the cure time. Don't use the kitchen near a newly fitted splashback until the adhesive has fully set.
- Skipping the edge silicone. Every joint needs sealing. No exceptions.
Does a Glass Splashback Need Silicone Around the Edges?
Every time, without fail. The silicone seal around a glass splashback isn't a cosmetic finish. It's a waterproof barrier, and in a kitchen it needs to be there. Kitchens produce steam and condensation constantly, and water is very good at finding gaps. Without sealed edges, moisture works its way behind the glass slowly and invisibly until you start noticing a slightly odd patch of discolouration, which becomes obvious discolouration, which becomes mould on the wall, which becomes adhesive failure. All of it preventable with a bead of silicone that takes twenty minutes to apply. Use a colour that matches the glass or the grout so it looks intentional rather than an afterthought, and make sure every joint is covered properly.
Order your glass splashback with adhesive included
Every Rapid Splashbacks order comes with adhesive included so you have everything you need to get started. Browse our full range of kitchen glass splashbacks or contact us if you need any guidance before ordering.
