SHEETING. Roof pitch to be 15 degrees & 3 degrees. 0,8mm aluminium roof sheeting with pre-painted G4 colortech finish on both sides complete with fixings, ridge flashing and mastic sealant to all side laps supplied by roof manufacture. determine direction of wind before laying sheets. sheets to project a minimum of 50mm beyond purlins at xxxxx. sheets to be fixed to 76 x 50mm timber purlins at max. of 1250mm centers on prefabricated trusses by engineer at max. of 1250mm centers to be strapped to 114 x 38mm wall plate with 30 x 1.6 x 1600mm long galvanised hoop iron straps built into coursing. Sisalation "RF405" underlay over trusses and under purlins on straining wires. prefabricated cleated roof trusses 114 x 38mm rafters and ties, 114 x 38mm intermediate members as per details hurricane clips be used externally to secure purlins to trusses at xxxxx overhangs. double wound 2.5mm diameter galvanised wire to secure purlins internally. all exposed roof timber to be painted with 2 coats of ABE provonite, before fixing of roof sheets, fascias and barge boards
SHEETING. Any sheeting, shoring, bracing or the use of construction safety boxes necessary for the proper performance of this contract shall be supplied by the Contractor, at no extra cost to this contract.
SHEETING. Galvanized steel shall be certified and comply with ASTM A 446 grade E (3T) and be finished as described. A certificate verifying compliance shall be issued by the manufacturer, ‘Brownbuilt Metal Sections’. Carried Forward R SECTION NO. 2 BILL NO. 03 - ROOF COVERINGS, ETC Amount R Brought Forward R
SHEETING. A minimum of three men shall be employed in a sheeting gang. The crew size will not apply to any commercial or residential job of five days or less duration for one sheeting gang. There shall be a Xxxxxxx in each sheeting gang. Two journeymen and one apprentice, if available, as part of crew.
SHEETING. The roof sheeting shall be 0,55mm AZ150 White ZincAl or equal approved IBR 686 profile roll-formed in continuous lengths and cut to length by a pneumatic cut-off process from certified Z275 galvanized steel complying with ISQ 550 (3T). A certificate verifying compliance shall be issued by the manufacturer. Finish for AZ150 Zincalume The profile shall be supplied with a paint finish G550 consisting of a full top coat "Colourplus" or equal approved silicone modified polyester Colour: To match existing on one side and Cool Grey backing to other Assembly The AZ150 ZincAl sheets shall be fixed to every purlin strictly in accordance with manufacturer's specifications. Holes through sheeting are to be drilled and NO punching of holes are allowed. 8mm Diameter x 75mm long fixing screws with 19mm diameter washer and rubber gasket are to be used. Every precaution shall be taken to prevent damage to roof sheets during all stages of construction. Duck boards should be used when necessary to protect the sheeting from damage. Sheeting which has become deformed or damaged in any way, shall be replaced Carried to Collection R Amount Item No Flashings Quantity Rate Flashings shall be approved by roof sheeting manufacturer and fixed to the sheeting with S10 clips to obviate any direct fixing perforations. Prior to flashings being fixed, all troughs at the apex shall be stop-ended to the full depth of the sheet in order to prevent any penetration of wind drived water. The trough shall be lipped at the xxxxx end to form a drip. Flashing flanges shall be notched to the sheet profile where necessary. All these operations must be performed with special tools available from the manufacturer. Care shall be taken to ensure that no sheeting or flashing will be cut with abrasive disc on roof surface in order to prevent steel splatter from penetrating colour coated areas. The flashings shall be supplied with a paint finish consisting of a full top coat silicon modified polyester Colour : White to one side Quality Assurance The manufacturer shall be assessed and certifed as complying with ISO 9001: 2008 Quality Management System Guarantee AZ150 ZincAl or equal approved sheeting shall be laid in strict accordance with manufacturer's specifications by an approved contractor. The employer shall be provided with a ten year written guarantee on materials and a five year written guarantee on workmanship and water-tightness after final inspection of the roofs, by the manufacturer.
SHEETING to CAN/CGSB-51.33M, translucent polyethylene film, 6 mil thick. Provide compatible sealing tape.
