Hi Chris The cheapest option is Grind & Seal, but we usually recommend Mechanically Polished Concrete for inside of a home. This is by far a better option, if you were to go for a Matte or Satin finish it is less expensive than a higher gloss finish. Mechanically Polished Concrete does not have a top coat sealer requiring drying and curing time and does not need re-applying in the future which will save time and money in the long run. Because Polished Concrete does not require drying or curing time it can be used as soon as the process is completed unlike the Grind & Seal option. All floors are slippery when wet, a non slip agent can be added to a top coat sealer which would be the Grind & Seal method which we do apply in a shower area if there is not a shower base. Polished Concrete in Matte and Satin finish does have a very good slip rating, has no grout lines as with tiled floors where dust can get trapped therefore it is a wonderful easy to clean flooring solution. Hope this helps, I have provided some details regarding the 2 main processes below There are 2 different finishing processes / methods that are commonly called Polished Concrete, they are very different so it is important that you know the difference & which process/method you want and which is being used on your concrete Polished Concrete - 12 to 17+ step process During this process the concrete is ground to the desired level of stone exposure. After grinding the concrete surface, the Polished Concrete process begins. This process has a densifier applied in multiple stages that is absorbed into the concrete which hardens and strengthens the concrete. A Polished Concrete Floor is Polished in Multiple stages in a Refining Process using diamond tooling & resin pads. A penetrating sealer is applied in the final buffing stage to complete the process The "Polished Concrete" process has "NO TOP COAT SEALER" applied therefore there is no drying or curing time required so your space can be used as soon as the process is completed Grind & Seal (a 3 to 4 step process) This is NOT Polished Concrete. Grind & Seal is often referred to as Polished Concrete, this is the cheaper substitute that gives a "Polished Concrete Look" With the Grind & Seal method the concrete is ground to the desired level of stone exposure and a TOP Coat Sealer is applied such as water based, solvent based, urethane, acrylic or epoxy requiring 5-7 days to dry & cure

Of course there are other aspects to consider, but orientation plays a very big part in the comfort of a home. The home I'm living in requires not heating or cooling at any time in the year. The living room has sun streaming through the windows this morning, & it's currently 21C inside. That's on a winter's morning! I'd be looking for a lot more than the bare minimum 5 stars! Why build a new house that only just meet an energy rating that will be unacceptable in only a few years. Many builders will orientate their builds poorly, & have to install expensive extras like double glazing just to reach the minimum standards, adding costs to the build. Reorienting the build costs nothing. Plus you'll save on heating & cooling costs. In the end, you'll be far better off financially, plus you'll be living in a far more comfortable house. You're lucky to have the north facing backyard, only 1 in 4 houses have it. Most blocks have quite narrow frontages, you've been blessed with a wide frontage & are extremely lucky to have that very wide backyard. Is be using it to my advantage & placing all the living areas to the north, along with the parents retreat, & the master of you can manage it. The other bedrooms, & bathrooms could occupy the south side (along with the media room, if you want it dark).

R u laying boards over the concrete or beside?

Would never use epoxy highly toxic stuff you would be breathing in for years. I looked pretty Heavily into PCM it gives its heat off in a 6 hour cycle at least the product available here do. Whereas concrete is 8-10 hours which is closer what you need to even out the day / night cycle. Thanks for the heads Macyjean up about lead in recycled bricks I will look into it! I think there is low VOC sealers for Slate. I am struggling to find a good local supplier of slate. I love the idea of the faded rugs I think that would work well. I am going to look into the colour options Thanks so much everyone