Trough plates

Trough slabs are prefabricated reinforced concrete roof elements with an inverted trough cross-section, used to cross garages, sheds and outbuildings with the possibility of creating a ventilated roof. They are produced from concrete of class C30/37, in widths of 60-120 cm, lengths of 2-7 m, thicknesses of 6-8 cm, with reinforcing ribs providing load bearing capacity of 3-5 kN/m². They are used in individual and industrial construction as an economical solution for roof coverings of detached garages, carports and auxiliary buildings.

For each project trough slabs price is calculated individually, taking into account the span, roof area and delivery conditions. We guarantee competitive rates while maintaining the highest quality of precast reinforced concrete. We invite you to request a free quote tailored to your facility.

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Roof trough panels – prefabricated elements for garage roofing

Trough panels are a proven structural solution for the roofs of garages and outbuildings. They are manufactured from reinforced concrete in steel molds using the vibration method. Prefabrication technology ensures uniformity of structure and precise dimensions of each element. The trough slab is characterized by a cross-section with longitudinal ribs that increase rigidity.

The design of the trough panels is based on the shape of an inverted trough. The flat top surface forms the base for the roofing. Ribs on the underside form ventilation channels and stiffen the structure. The trough sl abs are then reinforced with ϕ8-12 mm bars in the ribs and slab.

A ventilated trough panel roof system provides air circulation. The space between the ribs allows air to flow under the roofing. Elimination of condensation prolongs the life of the roof. In addition, the trough panel creates natural thermal insulation through air voids.

Dimensions of trough panels adapted to typical garage spans. Lengths of 3-3,6 m cover standard widths of one- and two-car garages. Modular widths of 60 cm and an additional 30 cm make it easier to plan the covering. In addition, the trough panels can be cut on site to the required size.

The strength parameters of the trough panels meet the requirements. The characteristic load capacity of 3-5 kN/m² is sufficient for snow and wind loads. Deflection under load does not exceed L/250. However, the trough slab retains the parameters for a minimum of 50 years of service.

Surface finish of trough panels prepared for roofing. The top rough surface provides adhesion of tar paper or membrane. The bottom smooth side can remain as a garage ceiling. Above all, the trough plates are protected against corrosion of the reinforcement.

Key advantages of roof trough panels

Trough panels – a natural roof ventilation system

Trough panels create ventilation channels between the ribs to eliminate moisture. Air circulation under the roofing prevents condensation. Reduction of the risk of fungus and rot of the roof truss by 90%. Extension of the life of roofing membrane by 10-15 years thanks to ventilation. System proven in thousands of garages over decades.

Quick installation without shuttering

Installation of trough panels for a 6×3 m garage takes 2-3 hours with a crane. Trough slab laid directly on masonry or beams. Elimination of time-consuming shuttering and concreting of the ceiling. In addition, the possibility of roofing felt as early as the next day. Reduction of roof construction time by 5-7 days.

Economical roof solution

Trough slabs cost 40-50% less than a poured floor of the same area. Savings on formwork materials and labor. Trough slab does not require additional insulation in unheated garages. Subsequently, lower foundation costs due to lower weight. Best price/quality ratio for garages.

Trough panels – load-bearing capacity for any roof

The trough slab carries a snow load of up to 2.0 kN/m² in Zone III. Resists wind suction up to 1.5 kN/m² with proper anchoring. Trough panels allow walking on the roof during maintenance. In addition, it is possible to install solar collectors or antennas. Load-bearing structure proven by calculation and practice.

Finished garage ceiling

The undersurface of the trough panels provides an aesthetically pleasing ceiling without additional work. Smooth concrete surface ready for painting with paint. The trough slab eliminates the need for a soffit. However, the ribs create an interesting architectural rhythm of the interior. Saving on finishing the interior of the garage.

Fire resistance of the structure

Reinforced concrete trough slabs provide fire resistance without protection. Concrete does not spread fire like wooden structures. The trough slab protects the garage from fire from the outside. In addition, lower insurance premiums for non-combustible structures. Safety of the car and garage equipment.

Trough tiles – durability for generations

C30/37 concrete trough slab serves a minimum of 50-70 years without repair. Resistant to frost, rain and UV radiation. Trough plates do not corrode like trapezoidal sheets. Subsequently, no need for maintenance or painting. A one-time investment for the life of the garage.

Expandability

The trough panel system allows easy expansion of the garage in the future. Dismantle part of the slabs and extend the structure with new elements. The trough plate can be reused after demolition. In addition, compatibility with various wall systems. Flexible solution growing with needs.

The use of trough panels in construction

Trough panels are used primarily as coverings for detached garages. They are used in single- and two-car garages with a span of 3-7 m. The trough panel is an economical solution for brick and steel garages. In addition, they are used in terraced garages on residential estates. The system dominates in individual construction for homeowners.

Carports and canopies use trough panels as a lightweight covering. A trough panel on a post structure creates a parking canopy. Used next to houses as carports for 1-4 cars. Then used as canopies for passageways between buildings. Economical solution for protecting vehicles from precipitation.

Farm buildings massively use trough slabs as roofing. Trough slabs on barns, barns and home storage. Natural ventilation ideal for storing agricultural crops. Also used in workshops and technical rooms. A universal solution for multi-family buildings and for all auxiliary buildings.

Industrial facilities use trough plates in storage halls. Trough plate as a covering for warehouses of non-sensitive materials. Used in storage sheds and open warehouses. However, also as roofing for loading ramps. A durable solution for industrial facilities.

Gazebos and recreational facilities use trough slabs as coverings. Trough slabs over allotment and garden gazebos. Canopies for barbecue and recreation areas. Primarily in public facilities – bus shelters and canopies. Aesthetic and durable solution for small architecture.

Technical parameters of roof trough panels

Standard dimensions of trough plates:
– Width: 60, 30 cm
– Length: 1.5-3.6 m (in 30 cm increments)
– Board thickness: 6-8 cm
– Plate height : 10-12 cm

Trough slab strength parameters:
– Concrete class: C25/30, C30/37
– Main reinforcement: ϕ10-12 mm RB500W
– Distribution reinforcement: ϕ6-8 mm.

Weight of trough slabs:
– 60×300 cm slab: about 250 kg
– Surface weight: 140-180 kg/m²
– Density of reinforced concrete: 2400 kg/m³

Performance parameters of the trough panel:
– Snow load: up to 2.0 kN/m²
– Wind load: up to 1.5 kN/m²
– Fire resistance: not spreading or under certain conditions REI 60
– Frost resistance: F150
– Water resistance: W6
– Exposure class: XC3, XF1

Installation data for trough panels:
– Minimum support: 8-10 cm
– Roof pitch: 3-10%
– Thermal expansion joints: every 12-15 m
– Installation rate: 100-200 m²/day
– Crane required: 3-5 tons

Installation of trough panels – instructions for making a roof

Preparation of the supporting structure for trough plates requires accuracy. Brickwork or support beams leveled to a tolerance of ±5 mm. Support spacing adjusted to the length of the slabs minus 20 cm for the supports. Then reinforce corners and areas of concentrated loads. Check the diagonal dimensions of the structure before installation.

Transport and lifting of the trough slab with a crane or HDS. Elements up to 500 kg can be assembled with a 3-5 t truck crane. Attachment by mounting loops or brackets in 1/3 of the length. In addition, the use of distribution beams for long elements. Lifting while maintaining the horizontal position of the plate.

Laying of trough plates begins from the eaves towards the ridge. The first trough plate positioned perpendicular to the masonry. Resting a minimum of 8 cm on each support with a felt pad. Then the next boards laid with an expansion gap of 5-10 mm. Control of the transverse slope of 3-5% towards the eaves.

Joining and sealing the trough plate at joints. Filling gaps between panels with mortar or polyurethane foam. Concreting the rim at the perimeter of the roof for stiffening. In addition, making the attic or eaves from prefabricated elements. Installation of flashings on the edges.

Implementation of coverage on trough plates according to technology. Priming the surface with bituminous preparation before roofing paper. Laying the underfelt with an overlap of 10 cm welded to the substrate. However, the topcoat with mineral sprinkling as a final layer. It is possible to use EPDM membranes or sheet roofing.

Finishing the trough panel roof with complementary elements. Installation of gutters and downpipes for water drainage. Making ventilation chimneys in the space between the ribs. First of all, corrosion protection of protruding steel elements. Acceptance with inspection of the tightness of the covering.

Trough tiles price – current price list 2024/2025

Trough plates price is shaping up as the most economical option for covering garages and sheds. Trough plates price depends on the dimensions, span and thickness of the elements. The trough slab price per m² of roof area forms the basis of the calculation. The trough slabs price increases in proportion to the length of the elements and load capacity. In addition, trough plates price includes the cost of reinforcement and quality control.

Trough panels price – calculation by dimensions

Trough plate price of 3-4 m long elements is the basic option. Trough sl abs price of 5 m span higher by 25-30% per m². Trough slabs price of 6-meter elements increases by 40-50% relative to shorter ones. The trough slab price of the largest 7-meter ones can be 70% higher. Then trough slabs price per piece increases non-linearly with length.

Trough plates price list 2024 – current rates

Trough slab price 2024 has stabilized after a period of increases. Trough slabs 2024 price increased by 4-5% compared to the end of 2023. Trough slab price is effective from January 2024 for standard dimensions. Trough slab price quoted per m² of roof or complete garage. However, trough slabs price may include winter seasonal discounts.

Roof surface – trough panels garage price

Trough slab garage price 6×4 m (24 m²) is the basic calculation. Trough slabs price of a 6×6 m (36 m²) garage higher proportionally. Trough slab price of a 6×8 m two-car garage increases linearly. Trough slabs price of a 6×3 m shed lowest in conversion. In addition, trough slabs price of the set includes finishing elements.

Transportation and installation – trough plates price of services

Trough slab HDS transport price is 300-400 PLN within a radius of 50 km. Trough sl abs unloading price with laying 200-250 zł per garage. Trough slabs price of installation by crane 500-700 zł per day of work. Trough slabs price may include free transportation when purchased for the entire garage. In addition, trough slabs price with turnkey installation higher by 30-40%.

Trough tiles price 2025 – forecast

Trough slab price in 2025 forecast with an increase of 3-5% year-on-year. Trough slabs 2025 price list will be stable due to local production. Trough slab price may grow slower than wood alternatives. Trough slab price in 2025 will remain the cheapest for garages. Above all, trough slabs price will retain its economic advantage.

Price comparison – trough panels price vs other solutions

Trough slabs price 40% less than a poured ceiling on a garage. Trough board price is 60% of the cost of wood trusses with covering. Trough slabs price 30% more favorable than trapezoidal sheet insulated. Trough plate total price with roofing felt cheapest. However, trough plates price justified by the durability of 50+ years.

Trough plates final price calculated according to the design of the garage. Trough slab price includes selection of optimal length and number of elements. Trough slab price includes all the finishing elements of the roof. Trough slab price guarantees economical and durable roofing. Ultimately, trough slab price is the best investment for garages and sheds.

Here are just some of our realizations regarding trough panels. This list includes only large investments on which our prefabricated products have appeared.

Frequently asked customer questions about trough panels

What are trough plates?

Trough slabs are prefabricated reinforced concrete elements used mainly for roofing and soffits. There are three types of trough slabs: double-sided open (DKO), open-closed (DK) and double-sided closed (DKZ), which are characterized by quick and easy installation on site.

What is the price of trough panels in 2025?

95-290 PLN net/unit

What are the types of trough panels?

DKZ (closed on both sides), DK (open-closed), DKO (open on both sides)

What is the weight of the trough plates?

60-190 kg

What are the dimensions of the trough plates?

Width 30/60 cm, height 10-12 cm, length up to 360 cm

What is the use of trough plates?

Ventilated roofs, garages, roofing over terraces

What are the properties of trough panels?

Ease of installation, small price, simplicity of construction

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Trough plates

Roof trough panels – prefabricated elements for garage roofing

Key advantages of roof trough panels

Trough panels – a natural roof ventilation system

Quick installation without shuttering

Economical roof solution

Trough panels – load-bearing capacity for any roof

Finished garage ceiling

Fire resistance of the structure

Trough tiles – durability for generations

Expandability

The use of trough panels in construction

Technical parameters of roof trough panels

Installation of trough panels – instructions for making a roof

Trough tiles price – current price list 2024/2025

Trough panels price – calculation by dimensions

Trough plates price list 2024 – current rates

Roof surface – trough panels garage price

Transportation and installation – trough plates price of services

Trough tiles price 2025 – forecast

Price comparison – trough panels price vs other solutions

Frequently asked customer questions about trough panels

Submit the form and get a free quote!

This is how customers write about us

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