Capital Steel Buildings utilise the best materials available with the use of the highest quality cladding manfactured by the respected  A Steadman and Sons.

We use their AS35 composite roof and wall panels where insulation is required. These consist of a core of PIR insulation sandwiched between a heavily profiled external weather sheet and an internal shallow profiled liner. The insulation bonds to the steel during the manufacturing process and together the insulation and the sheet steel form strong and rigid panels with good thermal performance which is certified by the Loss Prevention Certification Board (LPCB).The PIR insulation within AS35 panels has a thermal conductivity of 0.019W/mK; that gives the panels their good thermal performance and the large panel dimensions and the edge lap seals give the AS35 panel systems good resisitance to air leakage.

Steadmans also supply a range of NFRC Class A butyl sealants, profile foam fillers and expanding foams to enable the AS35 panels to be sealed to each other and to other building components, so avoiding thermal bridging and air leakage. The high vapour resistance of the liner sheet and the factory applied edge seal will inhibit interstitial condensation and the AS35 panels are unlikely to be affected by surface condensation as the high performance core will keep the temperature of the liner sheet above dewpoint.

The steel outer skin is 0.5mm thick and the inner is 0.4mm thick, the steel is either hot dipped galvanised to BS EN 10142:2000 or BS EN 10147:2000 or is Aluzinc coated. These panels are supplied with a guarantee of up to 25 years and the manufacturing process itself is certified to ISO 9001:2000 which is a guarantee of quality standards due to regular audits. AS35 panels have a predicted service life of 40 years. Time to first maintenance depends upon the finish and the environmental conditions but can be as high as 30 years. Coatings will degrade more rapidly in industrial or marine air conditions as oxidisation is normally accelerated in these environments and dark finishes will fade more rapidly than light ones. Service life can be increased by treating cut edges with site applied touch up paint at the time of cutting. Another excellent feature of the AS35 panel system is that they are unaffected by mould, fungi or mildew and they do not support vermin.

Where insulation is not required we can specify the full range of Steadmans single skin cladding i.e. AS 13/3, AS24, A30 and AS34.

AS13/3 and AS30 roof sheets can be supplied with anti condensation fabric on the inside to inhibit condensation - No Sweat!!