| Thickness [D] | Overall Thickness [Dt] | Weight | U-value |
| [mm] | [mm] | [kg/m2] | [W/m2.k] |
| 30 | 63 | 7,0 | 0,61 |
| 40 | 73 | 7,4 | 0,48 |
| 60 | 93 | 8,2 | 0,34 |
| 80 | 113 | 9,0 | 0,25 |
| 100 | 133 | 9,8 | 0,20 |
| 120 | 153 | 10,6 | 0,16 |
| 130 | 163 | 11,0 | 0,15 |
| 160 | 193 | 12,2 | 0,13 |
| Property | Standard | Certification Standard | Result | Field of application |
| Reaction to Fire | EN ISO 11925-2:2010 ignitability EN 13501-1:2017 reaction to fire | EN 13501-1:2007 Fire classification of construction products and building elements - Part 1 | B-S1-D0 | All thicknesses |
| Fire resistance | EN1365-2: determining the fire resistance of roof constructions | EN 13501-2:2007 Fire classification of construction products and building elements - Part 2 | REI30, RE120 | > 100 mm thickness |
| External Fire Performance | CEN/TS 1187 | EN14509:2013 & 2006/600/EC | BROOF (t1, t2 en t3) | All thicknesses |
| EN 13501-5 | BROOF t4 | All thicknesses |
For further information on environmental issues please contact the sales department of REX Panels & Profiles.
When correctly installed the air leakage of the REX SDW ROOF 4 sandwich panels is approx. 4,6 m3/hour/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] | |||||||
| 63 | 125 | 250 | 500 | 1000 | 2000 | 4000 | 8000 |
| 17 | 18 | 24 | 23 | 24 | 37 | 38 | 42 |
| Standard lengths | 2500 to 13600 mm |
| Longer lengths* | 13600 to 21300 mm |
| Shorter lengths* | Below 2500 mm |
| Standard Cut Back Eaves | 100 mm |
| Standard Cut Back Endlap | 200 to 300 mm |
| Minimum Cut Back | 2 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 panels are standard produced and supplied 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 | |
| Thickness | D ≤ 100 mm | -2 mm | +2 mm |
| D ≥ 100 mm | -2%D | +2%D | |
| Cover width | -2 mm | +2 mm | |
| Squareness | -6 mm | +6 mm |
The REX SDW ROOF 4 sandwich panels are produced with a high quality PIR (Polyisocyanurate) core material with a density of 40 kg/m3.
The profiled external sheet is standard available in the following materials and coating systems:
| Coating* | Steel | Thicknesses** | |
| 0,5 | 0,63 | ||
| Polyester 25 mu | Galvanised Steel quality S320 GD or better | ||
| Plastisol 200 mu | Galvanised Steel quality S320 GD or better | ||
| REX PUR 60 mu | Galvanised Steel quality S320 GD or better |
*Available colours according standard colourchart which is available on request
**Other coatings / thicknesses on request available
= standard available
The internal sheet is standard available in the following material:
| Coating* | Steel | Thicknesses** | |
| 0,5 | 0,63 | ||
| Polyester IC 15 mu | Galvanised Steel quality S250 GD or better | ||
| Polyester 25 mu | Galvanised Steel quality S250 GD or better | ||
| Foodsafe 150 mu | Galvanised Steel quality S250 GD or better | ||
| Colourfarm 35 mu | Galvanised Steel quality S250 GD or better |
*Available colours according standard colourchart which is available on request
**Other coatings / thicknesses on request available
= standard available
The REX SDW ROOF 4 sandwich panel is fitted with a soft semi-closed PVC foam sealant. This sealant is factory apllied on the overlap of the steel external sheet (side lap). With a compression rate of 30% a sufficiently airtight joint will be created.
The REX SDW ROOF 4 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 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.
The REX SDW ROOF 4 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 thickness | 20 | 30 | 40 | 50 | 60 | 70 | 80 | 90 | 100 | 110 | 120 | 130 | 160 |
| Stacked interleaved | 28 | 22 | 18 | 16 | 14 | 12 | 10 | 10 | 8 | 8 | 8 | 6 | 6 |
| Stacked crowns up or down | 20 | 17 | 15 | 13 | 11 | 10 | 9 | 9 | 8 | 7 | 7 | 7 | 6 |
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 21300 mm) and / or self-unloaders is also possible on request.
