Frequently Asked Questions

Polished Concrete FAQ

New Build Projects

Q:        At what stage do you come in to do the polished concrete?

Signature Floor and Hiperfloor

These finishes can be done after the frame and roof has been installed,  prior to gyprock being installed which is generally a lot more cost effective than waiting until after construction.  As these finishes are more durable and no surface sealers or coatings are applied, they will not get as easily scratched or damaged during construction.  As concrete needs to breathe, its important the finished floor is not covered up as it will create a moisture lock, which in turn causes the concrete to sweat and will deteriorate the finish (making your glossy floor turn dull, and any grouting to holes/cracks will fall out).  The only way to rectify this is to start the process from scratch, which costs time and money.

 Grind & Seal

This finish MUST be done at the final stage, before application of the final coat of paint and skirting.  As a sealer is applied to the surface it will get scratched and damaged during the building process, and will need to be re-applied to remove any damage.  Therefore its more cost effective to carry out at the final stage.

 Q:        What requirements are there for the concrete?

Usually a 32Mpa (or higher) concrete will provide a better finish and also helps with reducing shrinkage cracks.  The concrete must be finished extremely flat to prevent additional charges for grinding to level the floor.

We advise our clients not to use any curing chemicals as this can cause an undesirable effect on the final product, making the concrete look mottled in areas.  Instead it’s better to cover the concrete with black plastic and keep it wet to prevent pre-mature shrinkage.

It is vital the concreter is experienced in laying concrete to be polished as it WILL affect the overall finish.  Using an unqualified concreter can result in bald spots (no stone exposure), screed bar marks, boot prints, and an un-level surface – some of these things we cannot do anything about as we are only treating an existing surface so it’s better to prevent these types of problems.

Q:        Can you do bathrooms and laundry’s?

Like any polished surface (for example polished timber or porcelain tiles), polished concrete is slippery when wet, therefore it is the clients duty of care to ensure they are aware of the slip and fall risk involve and decide whether they will use polished concrete to these wet areas.  Many of our clients have chosen to proceed with this, as they prefer the same flooring throughout their home, understanding to take care.

Q:        Can you do polished concrete outside?

Yes, we can do a non-slip finish outside.  It is different to the types of finishes we do internally but it will still have that polished concrete look where you can see the aggregate in the concrete.  We will grind and hone to provide the correct adhesion  and seal with a decorative sealer which will enhance the colour of the concrete and aggregate, providing a ‘wet-look’ without the gloss.

Q:        Can you get different colours?

Yes, you can choose the colour of your concrete together with the colour of the aggregate/stone.  We can provide information, and colour charts of different products to assist you with ‘designing your floor’. 

Q:        Do you put the stones in the concrete?

No we treat the existing concrete surface.  We cannot control the colour or amount of stone in the concrete.  The aggregate (stones) is added and mixed at the concrete suppliers batching plant. If certain aggrgates are required, it is best to consult My Floor early in the design process so we can help choose the most suitable finish.

Q:        What happens if you get cracks in the concrete?

We patch and grout up any holes, cracks or imperfections in the concrete during the polishing process so that it all blends in nicely with the rest of the floor.  As concrete can move and cracks can appear in the future, for a small fee we utilise the same method to repair and fill any cracks, providing a seamless floor.

Q:        I don’t want the speckles on my floor.  Can I just have plain concrete?

Yes we can carry out an ‘Industrial Finish’ where we don’t expose the aggregate.  There are a number of important requirements to ensure we can achieve this finish so its best to contact us for this advice prior to installing the concrete.


Polished Concrete for Existing Projects

Q:        Do you polish the concrete or do you put new concrete on top first then polish it?

Generally, we treat the existing concrete surface.  If the existing concrete is in poor condition (soft and crumbly), not suitable for polishing, we will suggest an alternative finish similar to polished concrete. Mapei Ultratop is a cement based polish-able  micro-topping, designed to resurface existing concrete.

Q:        If I want to put a concrete topping down on my existing concrete, can you polish it afterwards?

Yes.  Check with your local council as there are height restrictions.  Ideally the topping should be at least 75mm thick to grind and polish. Mapei Ultratop can be installed at a minimum of 10mm if restrictions apply.

Q:        Can you choose the colour of the concrete and stone?

No, we cannot control the colour, amount or size of the stone in the concrete as we are treating an existing surface. The only way to change the colour and aggregate is by installing a micro-topping over the surface.

 Q:        Can you add a coloured dye to the concrete?

Yes,  a concrete dye can be added to the concrete during the polishing process.  Available in a variety of shades and colours to provide a 'tint'.

Q:        I don’t want a glossy looking floor, I want more of a matte finish, can you do this?

Yes, we can provide you with any desired finish you require, weather it be high gloss, semi gloss or matte finish.

Q:        Can you remove my existing carpet / tiles / timber / vinyl?  Does it cost extra?

Yes we can remove any/all existing flooring, including any underlying adhesive or floor toppings for an additional cost.

Q:        The carpet is nailed down, will there be big holes in the floor from this or can you fix it?

We will patch and repair any holes or damage in the concrete during the polishing process to provide you with a seamless floor.

 Q:        What sort of warranty comes with the polished concrete finish where a coating is applied?

We do not give warranties where a coating is applied as it will have to eventually get replaced. If a warranty is a must, then our diamond polished concrete finishes such as Signature Floor and Hiperfloor both come with a 10 year residential warranty and a 5 year commercial warranty.

Epoxy Flooring Frequently Asked Questions

Q.             Can you lay epoxy over tiles, or timber?

Yes, in most cases, however it really depends on the condition of the substrate. Most instances we will need to remove any existing floor coverings, including any glue or residue. This will prepare the underlying concrete to ensure longevity for the application of the epoxy coating.

Q.             Cant you just do an acid wash, do you have to grind?

To ensure the epoxy bonds to the concrete, we need to provide a mechanical key (either grinding, scabbling or shotblasting).  Some companies will tell you this isn’t necessary, although unless a mechanical key is carried out, the coating will not last.

 Q.            How long does it take to cure?

Each product is different.  Generally between 1 – 7 days.

Q.             How long will it last?

Depending on the product used, and the amount of foot/vehicular traffic the floor is subject to, generally between 3 – 10 years for residential applications, and 1 – 10 years for commercial applications. A regular maintenance procedure will need to be put in place to ensure the longevity of the surface.

Q.             What do I use to clean the floor?

Usually a neutral ph cleaner is all that is required – depending on the product used and the application requirements (whether the area is commercial or residential). Some epoxies can withstand acid based and bleaching chemicals.

Q.             What happens if the concrete is not suitable for application?

We can offer an alternative solution.

Contact the team at My Floor today to speak with one of our consultants. We service Brisbane, Gold Coast, Sunshine Coast, Sydney and Melbourne.

Service areas:

  • Brisbane
  • Gold Coast
  • Sunshine Coast

Call today for more information on Polished Concrete, Epoxy Flooring and Coatings, Concrete Grinding and Sealing

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