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Frequently Asked Questions - PVC Corrugated Roof Sheets

What is a corrugated roof sheet?

A corrugated roofing sheet is a type of roofing material shaped into a series of parallel ridges and grooves, or put simply, has a wavy look. This design gives the sheet strength and durability (which gives it an advantage over flat sheets) while also allowing for easy drainage of rainwater. They come in a range of sizes and profiles, allowing for flexibility in design and installation.
Vistalux ASB 3 inch PVC Sheet
The Vistalux range includes three types of corrugation: 3-inch, 6-inch, and Iron 8/3 profile. The 3-inch profile has a measurement of 72.32mm (peak to peak), while the 6-inch profile measures 146.54mm (peak to peak). The Iron 8/3 profile matches asbestos profile. Please consult the technical drawing on individual products for further clarification.

In addition to the Vistalux range, the Corolux range by Ariel Plastics offers the mini profile corrugated sheet, which has a much smaller peak-to-peak measurement of 31.72mm.

Which types of applications are suitable for PVC sheets?

Vistalux corrugated roofing sheets can be used for a wide range of applications, such as roofing and cladding installations, including porches, canopies, cloches, cold-frames, side cladding, garden sheds, lean-to extensions, covered walkways, plant houses, roof lights and carports.

How do I determine which profile is suitable for my roof?

When selecting a profile for your roof, it's essential to consider the nature of your project. Corolux mini-profile and Vistalux 3-inch sheets are ideal for domestic projects. The 3-inch profile is a popular choice as it fits perfectly into old asbestos roofs and is excellent for replacement and refurbishment jobs. On the other hand, the 6-inch profile is primarily used for industrial or agricultural purposes, such as warehouses, factories, or larger roofs. Therefore, it's vital to choose a profile that matches the size and intended use of your structure.

Are there varying thicknesses available for PVC corrugated roofing sheets?

Yes Vistalux roofing sheets are available in different thicknesses, Please refer to the information below:
3 Inch Corrugated PVC Roof Sheet: This sheet comes in three different thicknesses: 0.8mm (lightweight), 1.1mm (heavy duty), and 1.3mm (super weight).
6 Inch Corrugated PVC Roof Sheet: This sheet is available only in one thickness, which is 1.3mm (super weight).
8/3 Profile Corrugated PVC Roof Sheet: This sheet has a thickness of 1.1mm (heavy duty).
Mini Profile Corrugated PVC Roof Sheet: This sheet is 0.8mm thick (lightweight) and is available in either translucent or clear.

What are the available widths and lengths of corrugated PVC roofing sheets?

The width and length sizes of each profile of corrugated PVC roofing sheets may vary. To make things clearer, the length of a sheet runs down into the gutter. Please refer to the information below:

3 Inch Corrugated PVC Roof Sheets (Lightweight): This sheet has a width of 762mm (cover width of 651mm), and varying lengths ranging from 1,830mm (6ft) to 3,050mm (10ft).

3 Inch Corrugated PVC Roof Sheet (Heavy Duty & Super weight): This sheet is 762mm wide (cover width of 651mm), and varying lengths ranging from 1,525mm (5ft) to 3,660mm (12ft).

6 Inch Corrugated PVC Roof Sheet (Super weight): This sheet is 1,086mm wide (cover width of 1016mm), and varying lengths ranging from 1,525mm (5ft) to 3,660mm (12ft).

8/3 Profile Corrugated PVC Roof Sheet (Heavy Duty): This sheet is 660mm wide (cover width of 608mm), and varying lengths ranging from 1,830mm (6ft) to 3,050mm (10ft).

Mini Profile Corrugated PVC Roof Sheet (Lightweight): This sheet is 662mm wide (cover width of 603mm), and varying lengths ranging from 1,830mm (6ft) to 3,050mm (10ft).

For more detailed information on the different profiles and their sizes, please refer to the individual product descriptions.

What is meant by 'cover width'?

This is the width of the sheet after they have been overlapped by one corrugation, which is the manufacturer’s recommendation.

How do I calculate the number of corrugated PVC roof sheets required to cover my roof?

To determine the number of sheets required, you first need to calculate how many sheets are needed widthways (left to right). Divide the roof's width (in mm) by the sheet's cover width, always rounding up to the next sheet. For instance, if the answer is 7.3, round it up to 8 sheets.

For example, suppose you're using Vistalux 3-inch profile sheets with a cover width of 651mm, and your roof's width is 6 metres (6,000mm). In that case, you'll need 10 sheets because 6,000mm/651mm = 9.21(rounding up to 10 sheets required).
Next, you need to ensure that you have a sheet long enough lengthways (running down into the gutter) for your roofing project. If your roof is longer than the available sheet size (12ft or 10ft in some cases), you'll need to overlap the sheets sufficiently to cover the entire area. The recommended minimum overlap distance is 150mm for a 10-degree slope or 300mm for a 5-degree pitch.

If you find this calculation confusing, we recommend contacting one of our friendly team members for assistance in determining the number of sheets you require.

How do I determine the number of fixings needed for my Vistalux roof sheets?

To calculate the required number of fixings, you can follow these steps:
  • Divide the roof length by the support centres and add one.
  • Divide the roof width by the fixing centres.
  • Multiply the values obtained in step 1 and step 2 together.
Alternatively, an average of 20 fixings per sheet is a good rule of thumb.

What degree pitch do I require when installing the corrugated PVC roofing sheets?

A minimum slope of 5 degrees is essential in any structure to ensure water run-off (10 degrees or more is better).

What PVC flashing is needed to fit the roof sheets?

The PVC flashing required depends on the profile of the sheet. For instance, Mini Profile requires Mini Profile Clear Wall Flashing, 3 inch requires 3-inch corrugated PVC Clear Wall Flashing, and Iron 8/3 Profile requires Iron 8/3 PVC Clear Wall Flashing. Flashing is not available for 6-inch sheets, as they are not commonly used for a lean-to.

Do Vistalux PVC sheets come with a warranty?

Ariel Plastics Ltd will replace any Vistalux PVC Sheet that is proven to have failed due to a manufacturing defect in normal climatic conditions for ten years from the purchase date. This warranty is only valid if the Vistalux has been fixed according to the manufacturer's instructions. Re-erections or consequential damage costs are not included. This warranty does not affect customers' statutory rights.

What does the 'asbestos' aspect refer to in these plastic roof sheets?

This sheet mirrors the old Asbestos 3" profile sheets, but it is made from PVC with no asbestos present.

Can I install the PVC roofing sheets myself?

Yes. You can easily cut, drill, and install the sheet with standard DIY tools. However, it is recommended that two people perform the job or a skilled professional.

How do I install PVC sheets?

Please refer to our Corrugated PVC Sheet Installation Guide for installation instructions.

Why is there a minimum order requirement for corrugated roofing sheets?

Anything less than five sheets has a higher chance of breaking in transit. We would like to avoid this risk, which is why we have a minimum order quantity requirement of five sheets. You can mix different sizes to reach the minimum order requirement.

Is an overhang necessary for Vistalux corrugated roofing sheets?

Yes, an overhang of at least 60mm is recommended to enable rainfall to run-off into the gutter effectively. The sheets should also be wide enough to cover the barge board on the side. If cutting is required, please use an angle grinder with a metal slitting blade or a fine-tooth saw at a shallow angle with light pressure.

If you have any other questions about the Vistalux roofing sheet range roofing ventilation is more than happy to help answer them for you, we are available via phone, email, live chat or get us on Whatsapp.
 
Related Articles
The article outlines a step-by-step guide to installing Vistalux Corrugated PVC Roof Sheets for carports or lean-tos. It includes preparation, cutting, drilling, flashing, fixing, and joining sheets. The guide emphasises the importance of a minimum slope of 5 degrees, proper cutting techniques, pre-drilling holes for fixings, using wall flashing, foam fillers for support, Ariel screws, caps, and washers for securing the sheets, and how to join sheets end to end.
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