PMT non-penetrating mounting system for pitched roofs
PMT FLAT DIRECT – doesn’t work, not possible
PMT FLAT DIRECT is the ideal photovoltaic mounting system for gable, monopitch, sawtooth, barrel or butterfly roofs. With this system, solar power systems can be attached on bitumen roofs as well as on foil and sandwich solar panels. The PV substructure is great as a non-penetrating solution for roof inclinations of up to 30°.
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Flat direct
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Wide range of applications
From bitumen roofs to foil or sandwich solar panels – This PV substructure features a universal range of applications for gable, monopitch, sawtooth, barrel or butterfly roofs.
technical data
Non-penetrating
The ridge coupling or ridge connection make it possible to install the system without making holes in the roof. The system provides maximum safety for roof inclinations of up to 30°.
PRODUCT FEATURES
With the PMT FLAT DIRECT, PMT offers safety as well as flexibility. In addition to the variable range of applications, the primary advantages of non-penetrating installation and system stability speak for themselves. Discover more highlights of the PMT FLAT DIRECT mounting system.
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Application type
Pitched-, pent-, shedroof
(Special projects possible)
(Special projects possible)
Roof inclination
0° to 30°
Roof covering
Film, bitumen, concrete, sandwich
Standard spacing
Module lenght X + 160 mm from module edge to module edge
(Special projects possible)
Details are to be found in the project report.
(Special projects possible)
Details are to be found in the project report.
Weight
Low surface load from 1,25 kg/m²
ca. 10,7 kg/m² substructure + module
ca. 10,7 kg/m² substructure + module
Roof connection
Possible without roof penetration
Minimum arrangement
2 rows à 3 modules
3 rows à 2 modules
3 rows à 2 modules
Material
Exclusively high-quality aluminium
EN-AW-6063-T3 and stainless steel A2-70.
No galvanised components or plastics are used.
EN-AW-6063-T3 and stainless steel A2-70.
No galvanised components or plastics are used.
PV module suitability
All standard PV module sizes:
Width: 980 – 1050 mm (1220 mm*)
Length: 1630 – 1870 mm (2110 mm*)
Height: 30 – 50 mm
*on request
Width: 980 – 1050 mm (1220 mm*)
Length: 1630 – 1870 mm (2110 mm*)
Height: 30 – 50 mm
*on request
I have a question regarding this product.
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FAQ
Frequently asked questions
What attachment options are available for the FLAT DIRECT?
- Coupling of symmetrical system components over the high point of the roof
- Coupling over the high point of the roof – in this case the opposite side is only formed with ballast
- One-sided installation using mechanical fasteners over the ridge (e.g. sawtooth roof) or fastening in the ridge area
What roof covering can the PMT FLAT DIRECT be mounted on?
PMT FLAT DIRECT is the ideal photovoltaic mounting system for all roof coverings. It can be attached on all types of foil roofs, bitumen, all types of hard roofs (concrete, gravel and similar materials) and on insulated trapezoidal sheets (sandwich solar panels) without making any penetrations.
What types of roof can the PMT FLAT DIRECT be mounted on?
Our photovoltaic substructure can be mounted on almost all conventional roof types. From gable and sawtooth roofs to butterfly roof, many different types of roofs are possible. Special roof shapes like barrel roofs and others should generally be requested.
What solar panel dimensions are possible?
With our standard FLAT DIRECT upright mounting system, solar panels with a maximum width of 1,050 mm and a maximum length of 2,110 mm can be mounted.
With a solar panel width of between 1,050 mm and 1,220 mm, the maximum possible solar panel length is 1,870 mm.
With a solar panel width of between 1,050 mm and 1,220 mm, the maximum possible solar panel length is 1,870 mm.
Can I mount the solar panels cross-wise?
Special projects are reviewed by our internal sales team and by our planning department on request. If the project is possible, it will be planned and an offer will be made.
Must I maintain the gap between the solar panels?
It is essential that the gap between the solar panels is maintained. This is a decisive factor in the aerodynamics of the system and has a significant effect on the ballasting.
Can stones of other dimensions also be used?
Theoretically, stones of any weight can be used in the planning. Please note that our software PMT Plan uses 15-kg ballast stones of 40 x 40 x 4 cm by default. If you plan to use other stones, the thickness or height of the stones must not exceed 4 cm.
Where is the ballast positioned?
The ballast is attached to the system’s base rails in accordance with the project-specific ballast plan.
Can the system be attached to existing attachment points?
No. Personal safety attachment points or fastening points on the roof are not suitable for carrying permanent loads.
Is thermal separation necessary?
We recommend a separation after 13 metres. Special projects are possible after discussion with PMT.
Is it possible to put a coupling near the eaves?
Special projects are reviewed by our internal sales team and by our planning department on request. If a coupling can be implemented, it will be planned and an offer will be made.
Why weren’t any 96-cm rails delivered; instead, only rails with a length of 1860 mm were delivered?
The solar panel rails are delivered in various standard lengths and must be cut to length on site. To do this, please refer to the rail and cutting plan in the project report.
Is there a maximum field size, particularly with coupled systems over ridges?
We recommend a maximum field size of 13 x 13 metres. Special projects are possible after discussion with PMT.
What should be considered for coupled systems in light strip areas?
These kinds of projects must be fastened during installation.
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