Control the climate with insulated Stratco Cooldek Roofing
Stratco Cooldek roofing features a polystyrene core that is permanently bonded to a smooth, easy to clean coloured steel underside and a profiled, coloured steel topside.
The insulating properties of Cooldek reduce heat from above on hot days which significantly increases comfort levels under the roof. It also reduces noise from heavy rain and will aid in keeping the interior of your home cool, reducing your energy costs and your carbon footprint.
Versatile Cooldek Roofing lends itself to a variety of uses. The smooth underside integrates seamlessly into outdoor patios and can be used as roof and wall cladding for both residential and commercial projects.
Choose from either the Cooldek Classic or the Cooldek CGI roof profiles. There are three insulation thicknesses to choose from; 50mm, 75mm and 100mm. The topside colour choices include a wide range of popular colours to help integrate your Cooldek Roofing into existing colour schemes. The underside is available in White or a choice of high gloss colours.
Outback® Patio With Insulated Cooldek®
Control the climate, keep cool and experience outdoor living in comfort under a Stratco Outback® with Cooldek® roofing. When incorporated with a Stratco Outback Patio the innovative Cooldek insulated panel provides a roof, insulation and ceiling like finish all in one product, with superior spanning capabilities and outstanding cooling performance. Add value and extend your outdoor living all year round with a Stratco Outback and Cooldek Roofing.
Strength And Versatility
Exceptional strength allows Cooldek to span up to an impressive seven metres. Large spans reduce the number of supporting beams and framework, which creates an uncluttered ceiling-like appearance.
Simple to install, Cooldek even has an inbuilt rebate within it to conceal electrical wiring for fans and light fittings.
Stratco Cooldek has been designed, engineered and tested to comply with all relevant Australian Standards.
Invest In Cooldek Roofing
Classic steel roof look on top, with a smooth ceiling-like underside.
Outstanding cooling performance.
Choose from Cooldek Classic or Cooldek CGI roof profiles.
Choose from three insulation thicknesses.
Wide range of popular roof colours.
Ceiling-like underside is available in White or a choice of high gloss colours.
Exceptional strength reduces the number of beams and framework required.
Reduces heat to make your outdoor living area more comfortable.
Saves on electricity by reducing indoor cooling costs.
Cooldek panels have the following insulation rating (R value):
50mm thick panels - up to R1.48
75mm thick panels - up to R2.11
100mm thick panels - up to R2.75
Cooldek CGI Profile
The minimum recommended roof pitch for 'flat' verandahs shall be 3° (1 in 20) for Cooldek CGI panels. The maximum roof pitch for 'flat' verandahs shall be 5° (1 in 12). Care must be taken to ensure the minimum roof pitch is maintained to avoid ponding of rainwater.
The roof is designed to withstand maintenance activitie, roofs are not to be used for floor type activities.
The design contained within these span tables relate to wind classifications N1, N2, N3, and N4 applicable to Regions A and B. Stratco does not accept liability for any loss or damage suffered as a result of any errors in the interpretation or application of these span tables.
Base Metal Thickness / Material Grade
0.42mm / G550
0.60mm / G300
Mass (kg / linear metre)
Width Coverage (mm)
Minimum Roof Pitch
SL Grade EPS (expanded polystyrene)
0.037 W/mK (0°C mean temperature)
The Wind Capacity Tables are based on testing in accordance with AS1562.1-1992 and AS4040.0, 1 & 2-1992. Span tables have been developed by determining wind pressures in accordance with AS4055-2006 for domestic applications. Capacity tables are in limit state format.
The spans given in the 'Single Spans' table are determined for wind speeds for non-cyclonic areas. Indicated spans are suitable for 'flat' roof patios. Open freestanding unit spans can be taken from open three sides unless a wall, eaves or boundary exists within 500mm of two or more sides. For Cooldek roofing in attached or freestanding domestic gable patio application, sheet spans shall not exceed those given for one or no open sides. Alternatively the 'Wind Capacities' table may be used to determine allowable single spans for any application. Spans specified for units with three sides open are suitable for units considered 'empty under' and not exceeding three metres in height (from ground or deck level). For units in which goods or materials stored under the roof are expected to block greater than 50% of any open side exposed to the wind, take the spans from open two sides. For units with two open sides, spans are based on Cp,n=-1.0 while for units with only one or no open sides, Cp,n=-1.2. In all cases, relevant consideration has been given to local pressure.
Note: The 'Wind Capacities' table provides allowable wind capacities for Cooldek in single span application for serviceability and strength limit states. The pressures given may be used by a suitably qualified engineer for any single span application ensuring appropriate fixing details are applied.
Domestic Patio Single Spans
Panel Thickness (mm)
One/None or Gable Patio
Maximum allowable 900mm deck overhang for 50 and 75mm panels and 1200mm for 100mm panels, except in wind classification N4 in which maximum allowable shall be 900mm. The cladding back span shall be no less than 1.5 times the deck overhang. If values are shown in brackets they represent the maximum allowable span if an overhang is used. For a side to be considered open, the full length of the side must be open.
Single Span Wind Capacities
Single Span Wind Capacities (kPa)
Panel Thickness (mm)
The values in all the above tables are for use with steel supports with a minimum thickness of 1.0mm BMT, G550, or timber supports with fixing details as specified under 'Installation'.
Cooldek roofing should be laid into the prevailing wind and sit neatly on the preceding roof sheet. For the CGI profile fasten through every second crest. Use cyclone caps and neoprene washers in all crest fixings. Fix side laps with 12x20 hex head screws with neoprene washers at approximately 1000mm centres, refer below.
Cooldek CGI Fastener Selection
Fixing to steel
Crest fixing only - One fixing every second crest
50mm Panel - 14-10x110 hex head screw 75mm Panel - 14-10x125 hex head screw 100mm Panel - 14-10x150 hex head screw
Fixing to Timber
Crest fixing only - One fixing every second crest
50mm Panel - 14-10x110 Type 17 screw 75mm Panel - 14-10x150 Type 17 screw 100mm Panel - 14-10x175 Type 17 screw
Walking on Cooldek
When walking on Cooldek roofing, it is recommended you walk over the support beam to avoid damage. Wear flat, rubber soled shoes and walk with your weight spread over as many crests as possible for CGI. For carport and verandah applications, away from supports, crawl boards should be used to avoid damage during installation and maintenance.
The performance of Cooldek over time depends on its correct application and maintenance. Maintenance should be performed as often as is required to remove dirt, salt and pollutants.
Where used in severely corrosive environments, cleaning should be performed more often.
It is important that screws have the same life expectancy as the cladding you have specified.
Packs of Cooldek should always be kept dry and stored above ground level while on site. If the sheets have become wet, they should be separated, wiped and placed in the open to dry.