Frequently asked questions

Yes. Rometa's technical department designs custom plants for specific needs: fixed tilting machines over the pallet, lines for concrete-polyurethane pieces, special palletisers, reinforcement feeders inside the mould, multi-level machines, water-cleaning systems for pavers, rotary multi-fork carts and lines for producing vibro-compacted channels.

12 months from the plant's commissioning, or a maximum of 18 months from the delivery of the machinery (whichever comes first), unless the contract states otherwise. It covers parts and labour; it doesn't include transport, customs, accommodation or travel, unless specifically agreed.

It's recommended to buy a batch of spares and consumables worth 1-2% of the machinery's value, including first-aid parts to avoid production stoppages. After start-up, Rometa manages the supply of additional spare parts: parts from our own stock are dispatched immediately, depending on the client's location, while parts from external suppliers take between 1 week and 1 month, subject to availability.

Up to 95% of issues are resolved remotely via an Internet connection, with no need for a technician to travel. When the problem requires it, Rometa technicians travel to the client's installation. The machinery is designed with standard market components to make local spare parts easier to source and reduce downtime. Support is provided in Spanish, English and French, with a guaranteed response time of 24 hours. Remote assistance is compatible with any PLC or drive brand, with Lenze as the main equipment fitted on Rometa machines.

Assembly of the installation takes between 2 and 5 weeks, followed by 1 to 3 weeks of staff training on operating the machinery, the manufacturing process and optimal concrete dosing. Rometa sends specialised technicians for the assembly, supported by the client's own staff, and runs no-load tests before production begins. This service is included in the machine's price at no extra cost, and Rometa provides it anywhere in the world.

Civil works are the client's responsibility. Rometa provides all the necessary construction drawings and advises on the most suitable methods, as well as assisting the client during the works to prevent and correct any errors.

A precast plant is organised into three areas: production and mixing (400-600 m²), curing (600-800 m²), and a yard for stock, loading and unloading (4,000-10,000 m²), for an approximate total of 4,000 to 10,000 m² depending on the project. Rometa carries out a site study to propose the optimal layout, including aggregate storage location and truck circulation.

Sand, gravel (aggregates), water and cement, with common gradings of 0-2 mm, 2-4 mm and 6-8 mm (maximum size around 8 mm) to achieve a balanced mix. Washed sand 0-3 mm, sand with fines 0-3 mm and fine gravel 3-8 mm can also be combined depending on the application. Correct dosing is key to the strength, durability and final finish of the piece.

The usual maximum height is 300 mm, reduced to 250 mm for very slender pieces with thin walls. Rometa's technical team can design machines for taller pieces, up to 500 mm, depending on the project.

Four main factors: face fineness (depending on the aggregate size used), density or weight (depending on vibration, aggregate quality and cement amount), dimensional accuracy (depending on machine quality) and thermal insulation (depending on aggregate, density and mould design). With the right parameters, a 40x20 block can reach strengths of up to 80 tonnes.

Between 24 and 48 hours in the dryer, where the heat given off by the piece itself maintains proportional curing without drying it out or cracking it, with no need for extra water. Steam can also be added to speed up the process, though it complicates the plant and pallet maintenance.

Rometa supplies the moulds, though locally made moulds can also be used with the dimensions Rometa provides (for pavers, hollow-core blocks, blocks, kerbs, walls and other pieces). Pieces are produced on wooden pallets ranging from 1200x600 to 1200x1200 mm, which the plant cleans, greases and turns automatically. The number of pallets needed depends on daily output: the dryer must cover at least 1.5 days of production. Rometa works with moulds from different countries of origin (Spain, France, Italy and Germany), depending on the type of piece and the client's needs.

Aggregates and cement are stored and mixed in set quantities (three aggregate gradings, cement and water) until a homogeneous mix is obtained, which the vibro-compactor doses into the mould on a wooden pallet. The machine vibrates the mould during filling and applies stronger vibration during compression to remove air from the mix. The pallet with the wet piece then goes to natural drying (24-48 hours, avoiding sun and wind) and, once dry, the piece is palletised onto a pallet while the wooden pallet is cleaned, turned and greased to go back to the machine.

Blocks, hollow-core blocks, kerbs, pavers, channels, partition blocks and other shapes, depending on the mould fitted. The same machine accepts different moulds. The limit is set by the tray's usable area, which ranges from 1100×600 mm (Rometa 1010) to 1400×1200 mm (Rometa 4050) depending on the model.

It can be metal, concrete or mixed construction, fixed or mobile depending on the available building. Dryers must be enclosed or under cover to avoid sun and wind; Rometa provides the construction drawings as part of its technical support. Drying is natural (no added heat or humidity), and the recommended minimum capacity equals 1.5 days of production.

All movements are driven by a high-performance hydraulic unit, and mould vibration (key to concrete compaction) is produced by four counterweighted shafts, moving vertically, unidirectionally and fully synchronised. This system achieves homogeneous compaction that improves the piece's final quality.

Typically 3 daily shifts of 7 hours, plus 1 hour per shift for cleaning, greasing and mould changes, reaching up to 20 hours a day of effective production while keeping optimal operating conditions. In real-world conditions, output typically falls between 80% and 85% of the machine's maximum theoretical capacity, with a variation of around ±15%.

Yes. Rometa's modular design lets you start with an initial setup (mixing, production machine and transport cart) and expand it progressively as production needs grow, reusing up to 90% of the initial investment without replacing the whole system.

Up to 600 units/hour, with 60 kW of installed power. It's the entry-level plant in the Rometa range, designed for producing blocks, hollow-core blocks and pavers with simple assembly and fully automatic operation.

Up to 900 units/hour, with 80 kW of installed power. It's an automatic machine with medium-high capacity and built-in automatic palletising.

Up to 3,000 units/hour, with 170 kW of installed power. It's the highest-output model in the range, with 4 servomotors and automatic palletising.

Up to 1,500 units/hour, with 100 kW of installed power, for medium-high production of blocks, hollow-core blocks and pavers, fully automatically.

Up to 1,800 units/hour, with 125 kW of installed power. It is compatible with double layer (Face Mix) and has fully automatic operation for high-capacity production.

The Stationary range (M565 to M2500) produces 15 to 100 m³/h, with 20 to 90 kW of power. It features a heavy-duty planetary mixer and automatic dosing for consistent concrete on every cycle, designed for fixed precast plants.

The Compact range (M565 to M1125) produces 15 to 40 m³/h with 20 to 45 kW of power, and its foldable design lets it be transported on a single truck and assembled in a few hours with no crane needed, ideal for temporary works or plants that need to be mobile.

Planetary or horizontal-shaft mixers, from 375 to 4,500 litres of capacity and 20 to 90 kW of power, with a bolt-on plate lining for easy replacement and a hydraulic gate. They're the heart of any Rometa batching plant, ensuring continuous, homogeneous mixing.

When there's a large distance between the batching plant and the production machine: the overhead hopper carries the concrete through the air instead of along the ground, reducing material contamination and giving more precise dosing in a cleaner, faster system than a conveyor belt.

Up to 500 m²/day at 40 kW of power. The wetcast process (fluid concrete in vibrating moulds) delivers decorative finishes imitating stone, wood or slate with high aesthetic quality and excellent dimensional precision.

Smooth finishes or relief patterns imitating wood, stone or exposed concrete, with output of up to 500 m²/day and 40 kW of power. The wetcast process ensures uniform decorative finishing and high structural strength, with quick, easy installation.

Mainly the high-speed rail sector: concrete channels and covers for overhead catenary systems, with high dimensional tolerance and low permeability thanks to the vibro-pressed process, meeting the technical requirements of the rail industry, including channels for fibre optics and telephony.

It automatically splits the concrete piece in two, giving each face a natural-looking rough finish. It's applied to decorative blocks, kerbs and pavers, with two- or three-sided treatment available on request, and can be combined with Color-mix for a finish even closer to natural stone.

Already-dry concrete pieces are rotated and knocked against each other inside a rotating drum, which breaks the sharp edges and creates an irregular, rustic texture much in demand for decorative pavers and kerbs. It can be combined with Color-mix for a result even closer to natural stone.

Steel balls are projected onto the already-dry concrete piece, before palletising, removing the fine surface layer and exposing the aggregate for a shot-blasted finish of high aesthetic value, ideal for facade and urban-design elements.

Pressurised water is sprayed onto the piece while it's still wet, before curing, removing the surface laitance and exposing the decorative aggregate. It's a low-investment process compared with other finishing techniques, and the water used is recycled and reused.

It lets you produce pieces with two types of aggregate: a coarser one underneath and a finer or pigmented one on the visible face, cutting colourant cost by up to 70% since the whole piece doesn't need colouring. Machine output drops by 25% compared with standard mode, since filling happens twice (two mixes), but the pigment savings offset that capacity loss on decorative pieces.

Precise, consistent colour reproduction on every cycle, thanks to automatic pigment agitation and a cleaning system that minimises production stoppages. It's compatible with Rometa's aggregate, additive, cement and concrete dosing systems, and allows colour-gradient effects.

They sit between the mould and the vibrating table and transmit vibration to the piece with maximum efficiency. Rometa recommends wood or synthetic-material pallets for correct manufacturing and production of precast pieces.

Up to 40%, thanks to precise temperature and humidity control during curing before palletising, which also ensures uniform mechanical strength. They fully integrate into continuous production lines for blocks, pavers and other pieces.

A special 500 HB (64 HRC) hardness steel that delivers excellent dimensional precision and a service life above the industry average, cutting the cost per piece produced. Toform has spent over 30 years making custom moulds for block machines of any brand, with technical advice included and exports to all five continents.

It lets you certify the strength of concrete pieces on site and comply with current regulations without relying on external laboratories. It also helps study the material and find the mix formula that best fits each customer, and continuously improve quality without interrupting production.