ISOTRAP S

Trapezoidal and Sandwich Roof Installation System
Optimized for trapezoidal and sandwich-clad pitched roofs, the ISOTRAP S family offers an economical and reliable installation solution compatible with both horizontal and vertical panel placements in four different profile heights (S20, S50, S60-NX, S85).
  • A low-cost and optimal solution.
  • Horizontal and vertical panel placement
  • Pre-assembled EPDM sealant.
  • 0.8 kg/m² lightweight design
Download Datasheet
ISOTRAP S mounting system overview
ISOTRAP S mounting system view 1

What is ISOTRAP S?

ISOTRAP S is a versatile family of mounting systems designed for mounting solar panels horizontally and vertically on trapezoidal and sandwich-clad industrial roofs.

Available in four different profile heights – S20, S50, S60-NX, and S85 – the system adapts to various roof configurations and load requirements. Each variant is available in standard lengths of 290, 385, and 540 mm, as well as a longer length of 4,300 mm.

Alüminyum 6063-T66 alaşımından üretilen profiller ve EasyClamp universel kelepçeler, contalı sivri uçlu vidalar ve EPDM sızdırmazlık bantları sayesinde %99.9 sızdırmazlık garantisi sunar. Metrekare başına sadece 0.8 kg ağırlığı ile çatıya minimum yük bindirirken, EasyClamp sistemi ile hızlı ve güvenilir montaj imkanı sağlar.

0.8 kg/m²
Lightweight Design
12 Years
Warranty
4 Variants
Flexible Solution
EPDM
%99.9 Sızdırmazlık
System Video

ISOTRAP S — How Does it Work in the Field?

Click the icon on the video for full screen.

Product Family

Choose the profile height that best suits your project.

Economic Horizontal & Vertical Integrated EPDM
ISOTRAP S20
20
mm profile height
An economical solution. Ideal for horizontal and vertical panel placement in low-radiation areas.
Size Options
290 mm 385 mm 540 mm
Economic Vertical Only
ISOTRAP S50
50
mm profile height
Economical solution. For vertical panel placement only on trapezoidal and sandwich roofs.
Size Options
290 mm 385 mm 540 mm
Most Preferred Premium
ISOTRAP S60-NX
60
mm profile height
Premium standard profile. The most commonly preferred variant for industrial roofs.
Size Options
290 mm 385 mm 540 mm
High Radiation Air Circulation
ISOTRAP S85
85
mm profile height
For high radiation areas. Maximum panel efficiency with superior air circulation.
Size Options
290 mm 385 mm 540 mm

Technical Data

Area of Use Trapezoidal and sandwich-type pitched roofs
Variants S20 / S50 / S60-NX / S85
Profile Height 20 / 50 / 60 / 85 mm
Profile Width 86 mm
Size Options 290 / 385 / 540 mm (+ 4,300 mm long length)
Panel Size (L) 640 - 1,960 mm
Panel Size (W) 990 - 1,010 mm
Panel Size (H) 30 - 45 mm
Fixing Sealed pointed screw / Waterproof rivet
Profile / Clamp Aluminum 6063-T66
Support Aluminum 6063-T66 + EPDM
Fasteners Stainless Steel A2-70
Weight ≈ 0.8 kg/m²
Residential Horizontal and Vertical

System Components

ISOTRAP S clamp macro detail

Easy Assembly

  • 1
    Marking The spacing between the profiles for panel installation is determined and marked on the roof surface to ensure suitability for the panel layout.
  • 2
    Profile Placement ISOTRAP S profiles are placed on the ribs either by gluing the EPDM part (S50/S60-NX/S85) or directly (S20) according to the marking.
  • 3
    Fixing Sealed pointed screws or waterproof rivets are mounted vertically to the roof at the points where they align with the corrugation. The opening of the seal should be observed.
  • 4
    Clamp Assembly EasyClamp End (outer edges) or EasyClamp Mid (between panels) holders are installed on the assembled profiles, taking their positions into consideration.
  • 5
    Panel Assembly The panels are fitted onto the profiles, and the panel assembly is completed by tightening the Allen bolts on the EasyClamp holders with a torque of 14-17 Nm.

Let's work together to determine the most suitable ISOTRAP S variant for your project.

BF Device · Bifacial Shading Advantage

There are two different approaches in the industry. Why is ISOTEC's BF apparatus both economical and high-performing?

Why is shading important in bifacial panels?

Bifacial (double-sided) solar panels generate electricity from both their front and back surfaces. The back surface captures radiation reflected from the ground and coming from the side edges — typically. %15-20 ek üretim provides.

The critical point: Any part (purlin, beam, cable) that blocks light falling on the back surface of the panel → on the back surface shadow lines It creates a shadow, and the cells under this shadow lose productivity. Between the purlin and the panel... distance and the purlin cross-sectional area These are the determining parameters.

+15-20% Additional production potential of bifacial panels.
~%6-8 Potential loss due to the shadow of the purlin (in systems without BF apparatus)
56 mm The purlin-panel spacing created by the ISOTEC BF apparatus.

Therefore, to get the most out of a bifacial investment, the design of the mounting system is critical.

Two Design Philosophies in the Industry

There are two main approaches in the industry to reduce bifacial shadowing:

Inclined C-Beam competitors

The beam runs parallel to the panel at the same angle. A single long C-profile provides grip along the panel.

  • Minimal shade, high bifacial yield.
  • Long steel beams, high material costs.
  • In sloping structures, column heights vary.
  • Tolerances are tight, assembly takes a long time.

Vertical Beam + Horizontal Z-Purlin ISOTEC + BF

The beams are vertical (perpendicular to the ground, short). The Z-profile purlins extend horizontally. A BF 56 mm spacer is inserted between the purlin and the panel.

  • Low steel content, quick assembly, economical.
  • Bifacial performance with BF apparatus and Inclined-C equal
  • Standard column, easy supply.
  • Slot design compatible with thermal expansion.

CAD comparison — purlin-panel distances

ISOTEC vs. Inclined-C CAD Comparison — Purlin-Panel Distance

How does the BF adapter work?

The ISOTEC BF adapter is a device placed between the Z-shaped purlin and the bottom surface of the panel. spacer + clamp systemIt maximizes the radiation falling on the back surface of the panel by creating a distance of 56 mm.

BF Apparatus photoreal close-up

Design features

  • Spacer body: EN AW-6005A T6 anodized aluminum (3.0 mm wall)
  • Distance: The distance between the purlin's top surface and the panel's bottom surface is 56 mm.
  • Slot design: Panel thermal expansion accommodated (±2 mm tolerance)
  • Screw: Stainless steel A2 M8×40 hexagonal

Clamp variations

Code Medicine Use
BFC Glass-to-glass edge For frameless glass-to-glass panels at panel edges.
BFC-E Medium grip Center panel, shared grip, frameless.
BFC-SET Complete set All components are pre-packaged, quick assembly.

CAD details — ISOTEC system

ISOTEC system CAD — Z-shaped bracket + BF bracket 56 mm

Bifacial Radiance Simulation Results

The results are from NREL's (US National Renewable Energy Laboratory) open-source program. Bifacial Radiance This was achieved using a Python library. A scanner-based radiation calculation is performed that accurately reflects field conditions.

8760 Hourly weather data (TMY2)
0.50 Albedo (medium soil/grass)
2000×1000 mm glass-glass bifacial panel

Heat map comparison

Warm (yellow) colors indicate high irradiation (1.77 MWh/m² annually), while cool (blue) colors indicate shaded areas. In both systems, the front surface of the panel (the upper yellow area) receives homogeneous irradiation; the difference is the panel. on the back surface It is seen.

Heat map comparison — ISOTEC vs Inclined-C

Numerical results

System Bifacial Gain Shadow Line Cost
Sloping-C (Opponent) ~%18-20 1 big 💰💰💰 High
ISOTEC + BF Adapter %18 2 small 💰 Economical
ISOTEC (without BF adapter) ~%10-12 2 nearby shadows 💰 Lowest
ISOTEC + BF Bracket = Angled-C performance + economic advantage.

The same bifacial production, shorter beam, less steel, faster assembly. The cost difference is significant at the field scale.

Alternative: Panels for special projects where no shadows are desired. horizontal layout + Design without BF brackets is possible. In this case, the basic economics of the project change (more columns, specific optimization). In most field projects, a structure with BF brackets is optimal in terms of performance/cost.
ISOTEC · isotec.com.tr · ISOTRAP S
Erkan Öztürk

Erkan Öztürk

Founder & CEO @ ISOTEC
Solar Mounting Systems

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