Custom concrete flooring in architectural homes is a material system, not a surface choice. At MÉTODO, the floor is designed from subfloor preparation through finish and joint strategy — every variable documented before the concrete is ordered, because concrete cannot be undone.
Why Concrete Floors Fail When Not Designed
Most concrete floor failures in residential architecture have one of three causes: poor substrate preparation, inadequate curing, or joints placed in the wrong locations. These are all design and specification failures, not material failures.
Concrete placed over an unstable subfloor cracks unpredictably. Concrete that dries too fast in a low-humidity climate — common in Colorado and CDMX at altitude — develops surface crazing that no sealer can conceal. Joints specified at regular intervals rather than at structural slab breaks crack through the surface, not just the joint, because the concrete's natural stress path was not understood.
We design concrete floors to anticipate these conditions.
Mix and System Selection
The first decision in any concrete floor commission is the system — what type of concrete and application method is appropriate for the specific conditions:
Poured-in-place slab: New construction only. The floor is cast as the structural slab or over a structural slab as a topping. Maximum material presence, maximum control over thickness and reinforcement. Typical topping thickness: 1.5 to 3 inches.
Cementitious overlay: Applied over existing concrete or cured slabs. Minimum 3/8-inch thickness. Requires surface preparation (scarification or shot-blasting) for mechanical bond. Appropriate for renovations where removing existing floors is not practical.
Ground and polished concrete: Works with existing slabs that have sufficient strength and aggregate exposure potential. No overlay required. The most durable surface, hardened by the polishing and densification process.
Each system has specific substrate requirements, thickness minimums, and appropriate sealer systems. The matrix of options — presented to the client with samples and photographs of each finish level — is how we make this decision visibly and collaboratively.
Color Integration in Concrete Floors
Color in concrete flooring is not paint. It is integral pigment mixed into the pour or applied as a reactive acid stain after cure. The difference in behavior over 20 years is significant.
Integral pigment: consistent color through the full depth of the slab, resistant to wear patterns and surface damage. Color variation is natural and part of the material character.
Acid stain: penetrates into the cured concrete and reacts chemically. Produces mottled, variegated tones that read as translucent. Appropriate where a more organic, less uniform appearance is wanted.
Color selection is always evaluated on a sample panel in the actual room. Light behavior at altitude, UV exposure through specific windows, and the color of adjacent wall materials all affect how a concrete color reads in situ.
Joint Strategy: Deciding Where Concrete Cracks
Concrete shrinks as it cures. It will crack. The designer's job is to decide where. Control joints — intentional cuts or formed grooves — create weakened planes where cracking occurs in a predetermined location.
We design joint placement based on:
- Panel size to thickness ratio (typically maximum 30 times the slab depth for unsupported pours)
- Structural slab joint locations — the topping must crack where the structure cracks, not fight it
- Visual composition — joints can be used as design elements, echoing the spatial grid of the room
- Traffic patterns — joints at high-traffic locations are reinforced or avoided
For rooms where visible control joints are undesirable, we use fiber-reinforced mixes and stress-relieving admixtures to extend panel sizes. This does not eliminate cracking; it reduces crack width.
Sealing and Ongoing Maintenance
A properly specified and installed concrete floor requires minimal maintenance if the sealer system is appropriate for the use:
- Penetrating densifier applied within 30 days of pour, before any sealer
- Reactive sealer (lithium silicate-based) for hardness and stain resistance
- Topcoat system (matte wax or burnished coating) for areas with high abrasion
Annual maintenance is sweeping and damp mopping with pH-neutral cleaner. We provide a maintenance document for every concrete floor project that specifies the exact system used and reapplication intervals.
Próximos pasos
A concrete floor designed as part of an architectural interior is one of the most durable and honest surfaces a home can have. It records use and age without pretending to be something else.
Conoce el método de MÉTODO to see how material decisions in MÉTODO are made from first principles, not from a finish catalog.