Glazing warranty and aftercare: what the guarantee covers, and how to keep glass right

Short answer: a lifetime workmanship guarantee backs the install for as long as you own the home, the glass and the sealed units carry their own manufacturer warranties of around 7 to 10 years, and good aftercare is simple, a soft cloth, a squeegee on the shower screen, and no abrasive pads. The three layers cover different things, and it pays to know which is which.

The three layers of cover, and what each one backs

When a glazier says the work is "guaranteed", it is worth knowing exactly what that word is covering, because there are three separate layers and they protect different things. A good operator names all three on paper.

Layer one: the workmanship guarantee

This is the glazier's own guarantee on the install, the part they control. A lifetime workmanship guarantee means that for as long as you own the home, if a seal they fitted fails or a pane they installed was not seated right, they come back and put it right. It backs how the work was done, not what happens to the glass later through accident or a knock that was nobody's fault.

Layer two: the glass and sealed-unit manufacturer warranties

The glass itself, and in particular a sealed double-glazed unit, carries a warranty from the maker, separate from the install. A sealed unit is two panes with a sealed cavity between them, and the warranty, commonly 7 to 10 years, covers that seal against failing and letting moisture in, which is what makes a double-glazed window go foggy. A good glazier registers these warranties in your name at handover, so the cover is yours if you ever need to claim.

Layer three: your statutory consumer rights

Underneath both, Australian Consumer Law gives you a baseline that always applies. Services must be carried out with due care and skill, and goods must be of acceptable quality, for a reasonable period. This sits under every job regardless of what is written, and it cannot be signed away.

How glass and sealed-unit warranties actually work

The most common warranty claim on glass is a sealed unit that has fogged. Inside a double-glazed window, the two panes are joined by a spacer and a seal, with dry gas in the cavity. When that seal fails, moisture creeps in and condenses between the panes where you cannot wipe it, and the unit goes permanently misty. That is exactly what the manufacturer warranty covers, and why the registration matters: a foggy unit inside its warranty period is replaced, but only if the cover is in your name and the dates can be proved.

A warranty you cannot prove is a warranty you do not have. Get the glass grade, the unit and the dates on the invoice, and get the manufacturer warranty registered in your name at handover. The day a unit fogs is not the day to go looking for paperwork.

Simple aftercare for new glass, screens and splashbacks

New glass is easy to keep right, and a little routine care protects both the look and the warranty. The rules are the same across the board: be gentle, be regular, and never reach for anything abrasive.

New window glass

Give any fresh sealant or glazing tape a day to cure before you clean around it. After that, a soft microfibre cloth and a mild glass cleaner is all it needs. Avoid scrapers and abrasive pads, which scratch the surface and, on a coated or toned pane, can damage the coating.

Shower screens

The enemy of a clear shower screen is soap scum and hard-water marks, and the fix is a thirty-second habit: squeegee the glass after each shower. That alone keeps a frameless screen looking new for years. A weekly wipe with a mild cleaner handles the rest. Skip the harsh abrasives, which dull the glass over time.

Glass splashbacks

A splashback is the easiest surface in the kitchen, with no grout lines to scrub. A wipe with a soft cloth and a standard glass or kitchen cleaner takes off cooking splatter and keeps the colour bright behind the toughened glass. That is the whole job.

What to do next

Before you pay the balance on any glazing job, get the workmanship guarantee in writing, the glass grade and units named on the invoice, and the manufacturer warranties registered in your name. Our guide to safety glass and AS 1288 explains why the grade on that invoice matters, and our guide to choosing a shower screen covers getting the screen right in the first place. When the job is a new screen or a replacement pane, the shower screens and window and door glass replacement services are both backed by the lifetime workmanship guarantee, with the warranties registered to you at handover.