SUPACLAD PROFILED SHEETING AND ACCESSORIES

MATERIAL

The roof/side cladding shall be Brownbuilt SUPA-CLAD material in light/heavy industrial with galvanised finish of Z275/Z450 or with a Classicoat finish to one/two sides. SUPA-CLAD shall be obtained from Messrs. Brownbuilt Metal Sections, tel. (011) 898-2900.

THE PROFILE

The profile shall be roll-formed with 6 trapezoidal ribs at 178mm centres giving a nett cover of 890mm or 5 trapezoidal ribs at 178mm centers giving a nett cover of 712mm. The rib height shall be 37mm. Each pan shall incorporate one stiffener rib. The steel utilized shall be certified and comply with ASTM 446 grade E (3T).

ASSEMBLY

The sheeting shall be laid with side-laps on the leeward side of the prevailing wind direction. An approved side-lap sealant shall be incorporated on roofing with a pitch of less than 15 degrees. All fixing holes shall be drilled and not punched. Roof sheets shall be fixed by means of No.14 Topspeed Hex Head screws 65mm LG for steel purlins or 65mm LG for timber purlins and shall incorporate 26mm diameter bonded washers. Side-lap stitching shall be effected at no more than 600mm centres with 25mm LG Topspeed Hex Head screws. Side Cladding shall be fixed by means of No. 14 Hex Head screws 25mm LG for steel girts or 50mm LG for timber girts and shall incorporate 19mm diameter bonded washers.

FLASHINGS

Stop endings must be formed at apex to form a dam and the pan turned down to form drip. The roof sheeting shall be closed as necessary with purpose made flashings and shall incorporate serrated closers and poly closers where necessary. Flashing shall be fixed to roofing by means of No. 14 Topspeed Hex head screws 25mm LG with 26mm diameter bonded washers on roof and 19mm diameter bonded washers for side cladding.

SITE HANDLING

All SUPA-CLAD materials should be suitably supported under cover until required to be hoisted into final position.

CLEANING UP

The SUPA-CLAD roofing, including gutters, shall be handed over free of any debris.

QUALITY ASSURANCE

The manufacturer shall be assessed and certified as complying with ISO 9002 Quality Management System.

ERECTION

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.

SAFETY

The contractor shall exercise special care when handling long length sheeting, particularly in windy conditions. Should work be interrupted for any reason, all loose sheeting and incomplete sections must be adequately secured against possible movement by wind and gravity.

HANDLING AND STORAGE

The contractor shall ensure that all materials used on site for cladding, etc are transported, handled and stored in accordance with the manufacturer’s recommendations. Material damaged shall be rejected and replaced with undamaged material at the contractor’s expense. Repair of damaged material will not generally be permitted. Rates are to include for preventing damage and protecting sheets through all stages of construction.

INSPECTION PRIOR TO INSTALLATION OR ERECTION

Before commencing installation, the contractor shall verify that the following items have been checked and accepted:

  1. The entire structure or the portion thereof to be sheeted has been correctly aligned, leveled and grouted.
  2. Purlins and sheeting rails are at the correct spacing and are within the specified tolerances.
  3. The corners of the roof are square and the wall framework is perpendicular or as specified.
  4. No protrusions such as bolt heads, splice plates, cleats, etc. appear on the face of the framework.
  5. All members to which roofing and cladding are to be fixed in aesthetically sensitive areas are true and square.
  6. Paint and any other materials that may be incompatible with the sheeting, have been painted over or so dealt with that direct contact with the sheeting is avoided.
  7. The contact faces between the purlins or the girts and the cladding are in the same plane. Should the alignment be inadequate, the contractor shall request instructions from the engineer before proceeding with the fixing of the cladding.

PROTRUSION THROUGH SHEETED SURFACES

Protrusions such as pipes, ducts and the like, shall be adequately flashed where they pass through the sheeting surface. Where ribs have to be cut away to permit penetration, additional framing is to be installed as required to support the sheeting.

Depending on the position of the penetration through the roof, special attention shall be given to back flashing the sheeting to the ridge or point of water entry. In all cases, all cutting and flashings shall be so arranged that adequate provision is made for the drainage of all troughs and corrugation.

CLEANING OF ROOF, ETC.

All debris, swarf, etc arising from the fixing of the cladding shall be removed from the sheeting as the fixing progresses. In addition, off-cuts of insulation, surplus fasteners and sealants, mandrels from pop rivets, off-cuts of flashings and sheeting, surplus flashing, food packaging, cartons, bottles, cans, etc shall not be left on the roof or in the gutters.

Care shall be taken to ensure that no such material enters, blocks or partially impedes the flow of water into the outlets, down pipes, etc.

Item

Description

Unit

Quantity

Rate

Total

1.

 

 Roofing/Side Cladding shall be Supa-Clad

*(Insert one of options below in this space)

The profile shall be roll-formed from certified steel complying with ASTM 446 Grade E (3t) and be fixed to steel / timber in strict accordance with manufacturer’s specifications.

Manufacturer: Brownbuilt Metal Sections

Tel.(011)898-2900

*Options of finish to be placed above:

  • Light Industrial (0,5mm) galvanised Z275 spelter
  • Heavy Industrial (0,6mm) galvanised Z275 spelter.
  • Light Industrial (0,5mm) galvanised Z450 spelter.
  • Heavy Industrial (0,6mm) galvanised Z450 spelter.
  • Light Industrial (0,5mm) galvanised Z275 spelter with a Classicoat finish to one side.
  • Light Industrial (0,5mm) galvanised Z275 spelter with a Classicoat finish to two sides.
  • Heavy Industrial (0,6mm) galvanised Z275 spelter with a Classicoat finish to one side.
  • Heavy Industrial (0,6mm) galvanised Z275 spelter with a Classicoat finish to two sides.
  • Aluminium 0,7mm Mill Finish
  • Aluminium 0,8mm Mill Finish
  • Aluminium 0,9mm Mill Finish
  • Aluminium 0,7mm colour coated one side.
  • Aluminium 0,7mm colour coated two sides.
  • Aluminium 0,8mm colour coated one side.
  • Aluminium 0,8mm colour coated two sides.
  • Aluminium 0,9mm colour coated one side.
  • Aluminium 0,9mm colour coated two sides.

M2

 

    
2.
Bullnosing to a radius of…….mm (450mm min.) OR
Curving to a radius of………..mm (from 800mm to 36m)
Lm
M2
     
3.  Over and above for rake cutting and waste. Lm      
4. Bend up troughs to form a dam. Lm      
5. Bend down troughs to form a drip. Lm      
6.

Translucent Roofing / Side Cladding shall be Modek GRP (Fibre Glass) Heavy / Standard weight with UV surface protection in Clear/Tinted in Klip-Lok 406 profile fixed in strict accordance with specification.

OR

Translucent Roofing / Side Cladding shall be Modek Polycarbonate 1,5mm with UV protection in Clear / Tinted in Supa-Clad profile fixed in strict accordance with specification.

 M2      
7. Roof Insulation shall be "Thermapan" Backing Panel 25mm / 40mm thick with an infill of Structabord / Isoboard.

OR

Foil Faced Insulation…….mm thick / Structabord …….mm thick / Isoboard …….mm thick / Alucusion / Sisalation 420SA.

FLASHINGS shall be manufactured from

*(Insert one of options below in this space)

and fixed in strict accordance with manufacturer’s specification.

*Options of finish to be placed above:

  • 0,6mm galvanised Z275 spelter
  • 0,8mm galvanised Z275 spelter
  • 0,6mm galvanised Z450 spelter
  • 0,8mm galvanised Z450 spelter
  • 0,6mm galvanised Z275 spelter with a Classicoat finish to one side
  • 0,6mm galvanised Z275 spelter with a Classicoat finish to two sides.
  • 0,8mm galvanised Z275 spelter with a Classicoat finish to one side.
  • 0,8mm galvanised Z275 spelter with a Classicoat finish to two sides.
  • Aluminium 0,7mm Mill Finish
  • Aluminium 0,8mm Mill Finish
  • Aluminium 0,9mm Mill Finish
  • Aluminium 0,7mm colour one side.
  • Aluminium 0,7mm colour two sides
  • Aluminium 0,8mm colour one side.
  • Aluminium 0,8mm colour two sides.
  • Aluminium 0,9mm colour one side.
  • Aluminium 0,9mm colour two sides.
 M2      
8. Ridge Cap 462mm girth 1 times bent including B/F Serrated Closers and Poly-Closers. Lm      
9. Hip Cap 462mm girth 13 times bent including Serrated Closers and Poly-Closers. Lm      
10. Apex Flash 462mm girth 1 times bent including Serrated Closers and Poly-Closers. Lm      
11. Headwall Flash 308mm girth 1 times bent including Serrated Closers and Poly-Closers. Lm      
12. Sidewall Flash 308mm girth 1 times bent. Lm      
13. Curved Sidewall Flash 308mm girth 1 times bent to a radius of …………..mm. No      
14.

Counter Flash 185mm girth 2 times bent.

 Lm      
15. Curved Counter Flash 185mm girth 2 times bent to a radius of …………mm. No      
16.

Apron Flash 308mm girth 1 times bent including Serrated Closers and Poly-Closers.

 Lm      
17. Gable Trim (Barge Flash) 462mm girth 1 times bent. Lm      
18. Curved Gable Trim 462mm girth 1 times bent to a radius of ………..mm. No      
19. External Corner Trim 462mm girth 1 times bent. Lm      
20. Internal Corner Trim 462mm girth 1 times bent. Lm      
21. Cap Flash…………mm girth 2 times bent. Lm      
22. Drip Flash 231mm girth 3 times bent. Lm      
23. Back Flash (Soaker Flash)……….mm girth 2 times bent. Lm      
24. Valley Gutter……….mm girth 4 times bent. Lm      
25. Hood Flash…….mm girth 3 times bent. Lm      
26. Door Jamb Flash 231mm girth 3 times bent. Lm      
27. Window Jamb Flash 231mm girth 3 times bent. Lm      
28. Window Sill Flash 154mm girth 3 times bent. Lm      
29. Pipe Flash (Dektite 40mm/50mm/100mm/150mm) No      
  Note! For special flashing requirements contact Brownbuilt Metal Sections Tel (011) 898-2900