Net-Zero homes in Spain
Most constructors in Spain still build like a hundred years ago: a reinforced concrete structure, with thin brick walls
covered up by a good layer of plaster.
In contrast, net-zero or near-zero homes are built with the latest technologies that offer far better quality and comfort.
And of course, their superb isolation means your energy bills will be close to zero.
Many of our clients are surprised to find out that these net-zero homes also offer better value for money.
Simply because the building methods are more intelligent and efficient, avoiding waste of time and materials on the building site.
So - net-zero homes are better, cheaper, and more comfortable. And on top of that - they are faster to build, as most of the process
is "dry". Contrary to "wet" construction, the building process is not slowed down by the drying times of concretes, mortars and plasters.
Belgium's net-zero construction system
The Belgian construction system we use has been developed over decades - originally used for large-scale projects like hospitals, schools and office buildings - and adapted over the last 9 years for residential use. After thousands and thousands of units, it's a tried and tested, completely mature construction method.
A steel + concrete structure
For the structure, the system uses a smart combination of steel plus concrete.
Concrete, however, is only used for the floors, while steel columns are used for all vertical parts. As steel columns are much stronger, they can be much thinner than concrete pillars - extremely attractive for modern designs with large open spaces and large panoramic windows.
The concrete floors of the system are not poured on-site, but precision-cast in a factory, on sturdy metal frames, and sandwiched with isolation materials as required. Their surface is totally smooth and ready for tiling as of day one!
These concrete floors give the house a sturdy, sound and vibration-free feeling; and if needed their high thermal inertia can be used to keep the temperature in the house stable during the day and the night.
The concrete floors are factory-produced on sturdy metal frames
A super-isolated hull
This structure is then "wrapped" into a hermetic, super-isolating hull.
This hull is built on site, using multiple layers of light and highly isolating materials. The whole outer shell of the house is totally sealed off - without any cold points or thermal bridges. Just weeks after the construction start, the house is totally protected from wind and rain, and internal finishes like plumbing, electricity and tiling can progress swiftly without any delays.
The high level of isolation is exactly what makes these houses so comfortable - heat nor cold nor damp can get into the house unless it's
wanted, all regulated by the ventilation system. The house stays cool in summer and warm in winter, hardly consuming any energy. Sound proofing is comparable or better than "traditional" construction, and the concrete floors give the house a "solid" feeling.
The same materials are used for internal walls. Electricity, plumbing and other installation can be done (and modified!) much faster and cleaner than in brick walls.
The light weight of the walls also means that our net-zero system weighs about HALF the weight of a brick-and-mortar house.
This in turn makes foundation costs - often extremely high on the Spanish costas -
can be a lot lower and that steep slopes or weak soil are not as problematic as they are for traditional construction.
In just a few days, the concrete floor slabs are mounted on the metal structure.
All the advantages in a row
More comfort and quality - for less money.
Supreme isolation with near-zero energy bills.
Large open spaces and windows without the need for thick pillars.
Cheaper and faster to build than "wet" construction.
Absolutely no surprises - fixed budget and timing.