Non-penetrating mounting system for pitched roofs

PMT FLAT DIRECT - Not possible, does not exist

PMT FLAT DIRECT is the ideal PV mounting system for pitched roofs such as gabled, monopitch, shed, barrel or butterfly roofs. With these pitched roof solar mounting systems, solar installations can be mounted on bitumen roofs as well as on foil or sandwich panels. The PV substructure is suitable as a non-penetrating solution for roof pitches of up to 30°.
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Flat direct

Broadly applicable

From bitumen roofs to foils or sandwich panels - this pitched roof PV substructure impresses with its universal range of applications for pitched, monopitch, shed, barrel or butterfly roofs.
technical data


The ridge coupling or ridge connection of our pitched roof PV mounting systems enables installation without penetrating the roof. The system offers maximum safety for roof pitches of up to 30°.

Product features

With PMT FLAT DIRECT , PMT offers both safety and flexibility. In addition to the variable range of applications for the pitched roof PV mounting systems, the roof-penetration-free installation and stability speak for themselves. Discover further highlights of our pitched roof substructure for PV.

Our all-rounder for pitched roof PV mounting systems

Ballast fixation

Ballasting made easy

The WTG wind tunnel report confirms the optimum ballasting of the pitched roof photovoltaic mounting system PMT FLAT DIRECT. The ballast is securely fixed by using the universal module ballast clamp.

Variable application range

Always ready for action

The pitched roof PV mounting system can be installed without penetration. This makes it suitable for roof segments such as pitched, monopitch, shed, barrel and butterfly roofs. It has also proven itself for roof materials such as foil, sandwich panels and bitumen.

Installing modules correctly

What you should bear in mind

Our PV mounting systems for pitched roofs comply with the areas of the clamps on the most common modules. The drainage opening is kept clear. Low-resistance module earthing is possible.

Integrated cable management

Trouble-free and safe

Thanks to an integrated cover, the cables disappear immediately after installation. This also makes it easier to route the cables and prevents interference when installing the photovoltaic pitched roof mounting systems.

Flexible height

Independent fixation

The universal fastening of our pitched roof PV mounting systems covers clamping ranges from 30 to 50 mm. This makes the application more variable and planning faster.

Continuous floor rail

Optimal installation

The base rail of our PV mounting systems for pitched roofs is continuous and offers an optimum support surface.

Accessories as required

Your plus

Does your planning require further extras? At PMT , we can supply you with the right accessories for our pitched roof solar mounting systems. We will be happy to advise you on suitable roof connection points.

Technical data
Roof type
The pitched roof PV mounting systems are suitable for gable roofs, monopitch roofs and shed roofs (special projects possible).
Roof pitch
0° to 30°
Roof covering
Foil, bitumen, concrete, sandwich
Standard step size
Module length X + 160 mm from module front edge to module front edge (special projects possible). Please refer to the project report for details.
Low surface load from 1.25 kg/m², approx. 10.7 kg/m², substructure + module
Roof connection
Our pitched roof PV substructure can be installed without penetrating the roof.
Minimum arrangement
2 rows of 3 modules each, or 3 rows of 2 modules each
We only use high-quality aluminium EN-AW-6063-T3 and stainless steel A2-70 for our pitched roof PV mounting systems. No galvanized components or plastics are used.
PV module suitability
All standard PV module sizes are suitable for the pitched roof solar mounting system: Width: 980-1050 mm (1220 mm: on request), Length: 1630-1870 mm (2110 mm*), Height: 30-50 mm
Floor profile
Floor profile
Mounting rail
Mounting rail
FD MS type 3150
FD MS type 4250
FD MS type 6200
Mounting rail connector
Mounting rail connector
FD MSV Type 300
Floor profile connector
Floor profile connector
FD BSV Type 390
Cross connector
Cross connector
FD KV type 35
Center clamp
Center clamp
MK type 40
End clamp
End clamp
EK Type 35
Solmont mounting foot
Solmont mounting foot
Available with various coatings adapted to the roofing membrane.
Solmont mounting rail
Solmont mounting rail
FD FA Type 3300
Ridge connector
Ridge connector
FD FV type 750 FD FV type 1300 FD FV type 1000
Cable duct cover
Cable duct cover
FD KD Type 385




Frequently asked questions

What mounting options are available for the pitched roof PV mounting systems FLAT DIRECT ?

  • Coupling of symmetrical system components via the roof high point
  • Coupling via the roof high point - the opposite side is only formed with ballast.
  • Single-sided installation by means of mechanical fastening over the ridge (e.g. shed roof) or fastening in the ridge area

On which roof covering is it possible to install PMT FLAT DIRECT ?

PMT FLAT DIRECT is the ideal pitched roof PV mounting system for all roof coverings. It can be mounted on all types of foil roofing, bitumen, all types of hard roofing (concrete, gravel and similar) as well as on insulated trapezoidal sheets (sandwich panels) without penetration.

What types of roof can PMT FLAT DIRECT be installed on?

Our pitched roof PV substructure can be installed on almost all common roof types. From pitched roofs and shed roofs to butterfly roofs, many roof types are possible. Special roof shapes such as barrel roofs and others are generally available on request.

What module dimensions are possible with our mounting systems?

With our standard vertical mounting system PMT FLAT DIRECT , modules with a maximum width of up to 1,050 mm and a maximum length of 2,110 mm can be installed. With a module width between 1,050 mm and 1,220 mm, a maximum module length of 1,870 mm is possible for a pitched roof solar mounting system.

Do I have to keep the gap between the modules?

The gap between the modules must be maintained in pitched roof PV mounting systems. This is a decisive factor in aerodynamics and has a significant influence on ballasting.

Can bricks with other dimensions also be installed?

Theoretically, all stone weights can be planned. Please note that our software PMT Plan uses the dimensions 40 x 40 x 4 cm and a weight of 15 kg per ballast stone as standard. If you use other stones, the stone height or stone thickness must not exceed 4 cm.

Where does the ballast go?

The ballast is attached to the base rails of the pitched roof PV mounting system in accordance with the project-specific ballast plan.

Can the system be connected to existing securties?

No, personal safety points or anchor points on the roof are not suitable for permanently supporting loads.

Is thermal separation necessary?

We recommend separation after 13 meters. Special projects are possible after consultation with PMT .

Is coupling possible in the eaves area?

Special projects with pitched roof PV mounting systems are checked on request by our internal sales department and our planning department. If a coupling is feasible, this will also be planned and offered.

Why were no rails with a length of 96 cm supplied, only rails with a length of 1860 mm?

The module rails of our pitched roof PV mounting systems are supplied in various standard dimensions and must be shortened on site. Please refer to the rail and cutting plan in the project report.

Is there a maximum field size, especially for coupled systems above the ridge?

We recommend a maximum field size of 13 x 13 meters. Special projects are possible after consultation with PMT .

What must be observed with coupled systems in areas of continuous rooflights?

Such projects must be fixed on site.
3D model


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