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We Can Make Your Glass Look Like NEW!

Glass is beautiful, functional and versatile; specified by architects, designers and developers, it lets in light, promises clear vision and is easy to clean.

Wonderful as it is however, glass does have some disadvantages. Just as unprotected metal rusts, unprotected glass degrades. Atmospheric pollution, corrosion from humidity and other contaminants such as metal oxides, limescale and construction materials reduce the glass’ visibility and ruins its appearance. Cleaning costs escalate as time goes on and glass ages.

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Canny are Wellingtons leading experts in professional surface cleaning and restoration. We restore surfaces that other cleaners can’t. 100% Money back guarantee.

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Canny Glass Cleaning & Protection

If you are looking for a qualified glass technician in your area to help you maintain or restore glass surfaces of any size, type or shape, at affordable rates, we can help dirt and grime removal specialists, restoring the glass in your residence to an ‘as new’ appearance. Interior glass, windows, splashbacks, mirrors, doors, balustrades, solar panels and car windscreens – we treat the lot.

Our Glass Restoration Service was created to provide quality maintenance and restoration of existing glass of all types as a green alternative to glass replacement.

Has Your Glass Become Discoloured or Stained?

Did you know that glass is not completely smooth. Under a microscope, glass reveals a rougher surface made of peaks and potholes. Organic and inorganic contaminants often carried by water fill those potholes and react chemically with the glass, firmly bonding to its surface. As a result, glass easily becomes stained and discoloured.

There are different types of stains that can appear on glass but these are the 3 most common:

1. Hard Water Stains

Hard Water Stains are the most common type of glass damage. They can appear as grey or white hazy stains with shape of water drips. Hard water stains occur anywhere water repeatedly splashes on the glass and the sun cakes the mineral deposits to the glass.  This leaves a foggy-looking appearance on the glass and it can be very difficult to remove. The most common areas of Hard Water Stains are shower doors, windows located near irrigation sprinklers, seaside properties or areas of constant water dripping (for example, under the defected flashing or gutter joint). There are several DIY products that say they can remove light spots but if used incorrectly can permanently damage the glass. In most cases the stain may be permanent and have to be polished out by a glass repair specialist.

2. Glass Oxidation

Glass Oxidation occurs when metal screens or frames around windows are exposed to rain or humidity and deteriorate causing oxidation. These products of oxidation run down the windows and penetrate or cling to the glass. It’s appears as almost clear to grey hazy staining right below frames or metal elements on exterior of a building. Glass Protection with our special coatings can significantly reduce the probability of oxidation.

3. Stains From Chemical Damage (Acid Or Alkali Etching)

Aggressive chemicals containing acid or alkali can significantly speed up cleaning procedures of the glass but if not used correctly they can also make even more damage. Acid or alkali products can only be used on some types of clear tempered glass, but otherwise are not recommended. Those chemicals react actively not only with contaminants but also with the glass causing intensive glass corrosion with staining called etching. Etching goes much deeper in the glass structure compared to hard water stains and oxidation. Therefore, removal of etching requires the same deep glass restoration process to Glass Scratch Removal.

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How to CLEAN, RESTORE & PROTECT Badly Discoloured or Stained Glass?

There are generally 2 stages of severity of glass stains and corrosion. The deeper the corrosion is in the glass will determine how more severe the glass stain is. The more severe it is means it is then more difficult to restore the glass back to its original clarity. Glass stain (corrosion) close to the surface is Stage 1, deeper in glass structure is Stage 2.

There are two methods to remove glass staining and restore original clarity of glass:

Method 1: Chemical removalChemical removal is based on idea of dissolving contaminants and their bonds with glass by more aggressive chemical reagent as acid or alkali.

Method 2: Glass PolishingGlass polishing allows to mechanically remove contaminants and flatten back glass surface.

Restoration Is An Effective Solution For 95% Of All Glass Staining Problems. Canny specialises at glass restoration and stain removal. Our experience and equipment allow us to achieve great results at a reasonable price. We work with any size of project from apartments to multi-storey office buildings.

Is Your Glass Scratched or Damaged?

Scratches in your glass can not only be frustrating but can also spoil its appearance. Although scratches can happen very easily it’s not quite as easy to repair them. It’s always better to leave the repair to the experts who have the relevant experience. We have all the tools to solve your problem and return your glass back to its original glory.

Our experience and proven technology allow us to remove glass dents, scaffs, scratches, graffity without any visible effects. Removal of some deep damages can leave slight distortion that is almost invisible

On average Glass Scratch Removal costs about 20-30% of the replacement cost and takes 5-10 times less time depending on the size of a pane and the damage. So it helps you to save money and time whilst having the same result.

We use the proven and certified Glass Renu system for glass damage removal. GlassRenu™ is the world’s leading scratch removal system, the simplified three step grinding/polishing process removes not only scratches but also acid etch, builders’ damage and hard water stains from most types of glass.

Damage can be classified into four main categories, based on severity. These are minor, moderate, heavy, and extreme.

Types of Glass Damage

Minor damage: the kind which you cannot hang a fingernail in, and is often the result of glass on glass rubbing, as well as sand paper scuffmarks.

Moderate damage: is substantial enough to catch your nail, but not enough to hang the edge.  This can be the result of razor blade cuts or sand erosion.

Heavy damage: can be felt under the touch of a finger, and is easily visible to the naked eye.  This kind of damage is often the result of pet scratches or dragging from moving furniture.

Extreme damage: is severe, the kind which you can easily hang your fingernail in, and can be viewed on the glass at some distance.  Graffiti is often the cause of this type of damage.

How To REPAIR Your Scratched or Damaged Glass?

There are two main processes for glass scratch removal:

Glass Polishing is a mechanical process using special compounds, polishing pads and heat on the glass. Glass polishing is very effective for removal of minor and medium scratches without any distortion.Glass Abrasion is a process of glass surface abrading till scratch bottom is reached. The polishing process is then followed to complete the job. Glass abrasion of heavy and extreme damage can cause distortion on the glass.Approximate price range: $120-$480/pane depending on size and type of damage.

We will be glad to provide you with a Free and Fast Estimation and a Great Service!

Get a free, no obligation Canny Assessment

Canny are Wellingtons leading experts in professional surface cleaning and restoration. We restore surfaces that other cleaners can’t. 100% Money back guarantee.

Get your free Canny Assessment

Recent Reviews:

Brad – Tawa

This product is awesome, on a job with two heavily contaminated glass shower doors, that other product on the consumer market would restore as successfully as ClearShield.



Belinda – Wellington

I saved thousands of dollars! Canny made my shower look brand new again. It’s unbelievable! I love every time I go into the shower!



Frequently Asked Questions

If you have questions outside of these FAQ’s please call or email us.

What is the process of cleaning shower glass?

The process differs slightly depending on the age, size, type of build up and the severity of the water staining. The general process entails deep cleaning all the glass and chrome surfaces inside the shower cubicle using specialist cleaning products that have been proven to work. We then use an electric polisher to deep clean the glass even further to remove any stubborn staining and build up deep from within the pores of the glass. Once we have the glass back to an as new condition we apply a protective coating to your glass for easier ongoing maintenance and to prevent future staining.

How long does the complete process take?

The time taken depends on the intensity of the damage. Roughly even hard to remove stains in a regular size shower can be restored in between 2 to 4 hours. If you don’t apply a protective coating the shower can be used immediately. If a coating is applied the shower must be left for a minimum of 3 hours before using.

Does Canny provide any warranty for our restoration service?

Yes, we do? The length of warranty depends on the age and condition of the glass/surface at time of restoration and the products used.

What is the recommended after care post shower glass restoration?

Aftercare is an easy process. We simply ask that you wipe down or squeedgee off the glass after use and clean the glass every 2 weeks with the aftercare products provided. This will prevent any extra build up getting in to the glass and minimise time on any other cleaning.

What is the process of cleaning dirty tiles?

Tiles come in different variety and texture such as slate tiles, marble tiles, granite tiles, vinyl etc. Thereby, the process of cleaning each of them and the products to be used are different. Consider talking to an expert, at Canny we can take a quick look and suggest what would be the right treatment you should go after.

What if I am not satisfied with the restoration?

We are confident you will be satisfied with the transformation as this is what we specialise in. If for any reason you are not satisfied we will return to complete the job to your satisfaction.

What is the process of silicone removal & replacement? Can we do it ourself?

It depends on the depth of the problem. Yes, you can do it yourself if you have the right equipment, products and if you understand the process. Only if it is done the right way it is worth it or else you might end up with even worse looking floors and water ingress issues. Hiring a professional is certainly a good option to consider. Canny is Wellington’s premier silicone experts with years of professional experience. Our staff are fully trained and can make your silicone replacement simple. We are excited to help revitalise your bathroom, kitchen or tile floors.

Grout discolouration, dirt build up? Why does my tile grout get dirty?

Tiles and Grout when new can be the difference between the WOW factor or not. They don’t stay looking like new for long though and soon create micro hiding places for dirt, oils, and bacteria. The condition worsens in a short amount of time and creates an unacceptable floor or wall that cannot be cleaned by usual methods. Due to the porous structure of grout, it easily absorbs stains, mold, and dirt – particularly if it didn’t have a commercial grade grout sealer protecting it. Acids can also cause discoloration which over time makes your tile grout dull – and sometimes this is irreversible.

What modes of payment are available at Canny?

We accept direct credit, credit card and debit card payments. As well as direct deposit.

How long will the restoration last?

Glass: This is very much determined but how well you follow the aftercare instructions. If the aftercare instructions are followed your shower glass will look pristine for years.Silicone: This is very dependent on how it is maintained and the levels of humidity. On average silicone should last between 2 to 5 years in most wet areas.Grout Removal/Protection: This is very dependent on how it is maintained and the products used. On average grout sealing should last between 2 to 10 years in most areas.Tiles and Stone: This is very dependent on how it is maintained and the products used. On average tile and natural stone sealing should last between 2 to 10 years in most areas.

Get a free, no obligation Canny Assessment

Canny are Wellingtons leading experts in professional surface cleaning and restoration. We restore surfaces that other cleaners can’t. 100% Money back guarantee.

Get your free Canny Assessment

Areas covered

Wellington Central Suburbs

Upper Hutt

Lower Hutt


Kapiti Coast


Bathroom Makeover Packages

Glass Stain Removal + Protection

Grout Removal + Replacement

Shower Resealing

Silicone Removal & Replacement

Tile & Grout Cleaning

Tile & Grout Sealing

Natural Stone Rejuvenation


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