RHEINZINK® - Corrugated Roof Sheeting System

Product Overview

  RHEINZINK® - Corrugated Roof Sheeting System
  • Traditional Victorian Style (sinusoidal profile sheeting)

  • Corrosion resistant even in marine environments

  • Life expectancy for generations (80-120 years)
  •  Maintenance free
  • 30 year material guarantee
  • Quick and easy installation for roof pitches from 10° to vertical (see “Technology” for restriction)
  • Available in RHEINZINK® "preweatheredpro blue grey"
  • Natural and certified environmentally friendly building product
RHEINZINK® - Corrugated Roof Sheeting System

The RHEINZINK®- Corrugated Sheeting System combines traditional Victorian Roofing Design with the unmatched advantages of RHEINZINK®’s material properties.

As with all RHEINZINK products, this high quality product is pure RHEINZINK® being 99 % zinc with defined additions of titanium and copper. Due to the natural properties of zinc, this material needs no paint or any other surface protection. It stands out by virtue of its extreme longevity, performs under various conditions and is resistant to coastal climate. With its natural blue-grey finish it blends in harmoniously with all other materials. Even decades later, it maintains its good looks. Furthermore, RHEINZINK® is a certified environmentally compatible building product. Hence, it is not surprising that RHEINZINK® is recommended for use anywhere in construction where durable and sustainable long-term solutions are required. Add up these features and RHEINZINK®-Corrugated Sheeting System simply offers outstanding value for generations.

Technology

System Description

The RHEINZINK®- Corrugated Sheeting System is a traditional sinusoidal profile sheeting system.

The corrugated pre-profiled sheets are installed the traditional way. They are fixed directly to steel or wood purlins using stainless steel screws and EPDM bonded sealant washers. The corrugations run parallel to the slope of the roof, from ridge to eave.

The min. roof pitch is 10° for single sheet length (length max. 5m) or >= 25° when end laps are needed (ridge to eave > 5m).The ends and sides of the sheets are overlapped for the installation. Flashings are made of the same high quality material RHEINZINK®.
             
Profile Dimensions

Sheet width: 838 mm
Cover width: 762 mm
Sheet length: up to 5 m
Thickness: 0.80 mm or 1.00 mm
Sheet weight: 0.80 mm: 5.3 kg/l mt (6.4 kg/m˛)
                         1.00 mm: 6.7 kg/l mt (7.9 kg/m˛)
Min. Roof pitch: with single sheet (no end laps) 10°;
                            with end laps 25° 

The corrugated profile sheets can be individual cut to size for each project.
Due to direct fixing, thermal expansion of the profiles is compensated by limiting the single profile sheet length to 5m.

             
Purlin Spacings

Purlin Spacings are dependent on both downward loading and negative suction loading caused by wind and installation loads. Your engineer should be consulted to calculate your load and purlin spacings. A broad guideline for purlin spacings is shown in the table.
 

Gauge

 Maximum Purlin Spacing for Roof Covering
  Double Span Single Span Cantilever
mm m m m
0.8 1.00 0.80 0.20
1.0 1.20 1.00 0.25

Tab.: Purlin Spacings, for max. uplift loads of 1,6kN/m˛ and max. superimposed distributed load of 1,5kN/m˛

Fastening

The sheets are fixed directly with stainless steel screws with EPDM bonded washers through the crest of the corrugations into the purlins.  The drawings show the minimum fixings per sheet and purlin.

Crest Fastener Location: Internal fixings, 3 fasteners per sheet

Crest Fastener Location: End fixings at eaves and sheet end laps, 5 fasteners per sheet

For single-pitch roofs and for projects in exposed locations, an increased number of fasteners, as recommended for end fixings, would be advisable. Please consult your engineer.

Joint Design (Overlaps)

Side Laps: 

Side laps have to be minimum one and half corrugations and the first crest at each purlin has to be fastened.

End Laps: 

When using more than 1 sheet length for the roof slope, the roof pitch has to be steeper than 25° and the sheet ends needs to be overlapped by a min. 200mm. 

Sealant 

Generally, all ridge flashings have to be sealed with flute closures.
More than that, sealing is necessary for the following cases.

Roof Pitch

  
10° – 15°
  • Side-lap sealant shall be incorporated
  • All roof penetrations shall be sealed
  • Sealant shall be used when backwater is expected
15° – 90°
  • Sealant shall be used when backwater is expected

Sealant properties: 

  • permanent flexible sealant

  • permanent temperature stability of 90°C, without getting brittle or changing shape (to prevent crack or gap developments)

  • must not absorb water

  • must not contain acidic contents

  • when sealant is used, ensure the gap between the two sheets is completely filled

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 hex head stainless steel 304 (A2) self tapping screw no. 14 (6.3mm) X 65mm for timber purlins or 50mm for steel purlins in conjunction with stainless steel 304 (A2) 26mm diameter bonded washer with 3mm EPDM seal. Side-lap stitching shall be effected at no more than 600mm centres with 25mm hex head stainless steel 304 (A2) screws in conjunction with stainless steel 19mm diameter bonded washer 304 (A2) with 3mm EPDM seal.