• Trapezoidal External sheet "ROOF 4" in polyester
  • Internal finished with fiber reinforced polyester sheet
  • Most suitable for aggressive external and / or internal conditions
  • For pitched roofs starting from 4°
  • Cover width 1000 mm
  • Thicknesses from 20 mm to 160 mm
  • Insulation value down to U = 0,14 W/m2 .k

*Use your mouse to rotate the panel 360 °


The T-profile is only supplied to improve the aesthetic appearance of the joint detail. The color may differ from the CLEAN internal sheet. If additional air and / or vapor sealing is required, we recommend to seal the T-profiles using a gun-applied silicon sealant.



Thickness [D]Overall Thickness [Dt]WeightU-value
The mentioned insulation values in this table are based on calculations according NEN-EN14509:2013


For further information on environmental issues please contact the sales department of REX Panels & Profiles.


For further information on environmental issues please contact the sales department of REX Panels & Profiles.

Air Leakage

When correctly installed the air leakage of the REX SDW ROOF 4 AGRI CLEAN sandwich panels is approx. 4,6 m3/uur/m2 @ 50 pa. Under normal environmental conditions this is tight enough to prevent condensation or unacceptable air leakage. If necessary (i.e. coldstore applications) the airtightness can be improved by gun applied sealing the panel to panel joints using silicon mastic.


Indicative octave band sound Insulation Index (R) in [dB] / [Hz]
The weighted Sound Reduction Index (SRI) of sandwich PIR roof panels is approx. 25 dB(A)


Available lengths

Standard lengths2500 to 13600 mm
Longer lengths*On request
Shorter lengths*Below 2500 mm
*Non-standard lengths are available on request and subjected to a surcharge

Panel End Cut Back

Standard Cut Back Eaves100 mm
Standard Cut Back Endlap200 to 300 mm
Minimum Cut Back2 mm
Maximum Cut Back 350 mm


Sandwich roof panels can be installed from left to right or from right to left. REX SDW ROOF 4 AGRI CLEAN panels are standard produced and x with a sidelap on the right (see illustration). If a different installation direction is required this can be mentioned during the order process.


Length L ≤ 3000 mm-5 mm+5 mm
L ≥ 3000 mm-10 mm+10 mm
ThicknessD ≤ 100 mm-2 mm+2 mm
D ≥ 100 mm-2%D+2%D
Cover width-2 mm+2 mm
Squareness-6 mm+6 mm
Other product- and materialtolerances according EN14509:2013


Core material

The REX SDW ROOF 4 AGRI CLEAN sandwich panels are produced with a high quality PIR (Polyisocyanurate) core material with a density of 40 kg/m3.

External sheet

The external sheet is standard available in the following materials and coating systems:

Polyester plastic

= standard available

Internal sheet

The internal sheet is standard available in the following material:

GRP (Glass Reinforced Polyester)

= standard thickness (on stock)


The REX SDW ROOF 4 AGRI CLEAN sandwich panel is supplied with a PVC T-profile as standard. This profile must be installed in all panel joints and only serves to aesthetically finish the joint.

Quality and Guarantee


The REX SDW ROOF 4 AGRI CLEAN product is CE marked according EN14509:2013. The quality of our products is under FPC (Factory Production Control) continuesly monitored in our own testlaboratory. These procedures are secured under ISO9001.


The REX SDW ROOF 4 AGRI CLEAN panels can be supplied including the following certificates / quality marks:


All products from REX Panels & Profiles come with a standard 10-year product warranty. An extended warranty is available on request under certain conditions. Some coating systems offer an additional (longer) guarantee on the durability of the external and / or internal sheet. For more information or the warranty conditions you can consult the website or contact our sales department.

Packaging and transport


The REX SDW DAK 4 AGRI CLEAN sandwich panels are stacked interleaved on OSB boards and PS blocks and fully wrapped in foil to create solid and manageable bundles. On request the panels can be stacked with all profiled external sheets up or down.

Number of panels per pack
Core thickness2030405060708090100110120130160
Stacked interleaved282218161412101088866
Stacked crowns up or down2017151311109987776


All deliveries are made via standard road transport to the construction site (maximum standard length 13600 mm). The trucks must be unloaded by the customer with suitable lifting equipment. Transport of longer lengths (up to 13600 mm) and / or self-unloaders is also possible on request.