Eternit FarmTec Polycarbonate Rooflights
Eternit FarmTec Polycarbonate Rooflights additional 1Eternit FarmTec Polycarbonate Rooflights additional 2

From£24.99 ex VAT£29.99 inc VAT

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Brand: Eternit
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Product info

Polycarbonate rooflights
Eternit supplies agricultural grade polycarbonate rooflights, suitable for use with the FarmTec fibre cement sheets. These are classified non-fragile class C but should be always treated as fragile.
Description FarmTec UV resistant polycarbonate sheet
Thickness Approx. 1.3mm
Weight 1.88 kg/m²
Fragility rating Class C
Fire rating Class 1Y (BS 476 part 7)
Colour Clear
Light transmission 88%
U-value 5.68 W/m²K
Storage Rooflights should be stored on a flat, horizontal and dry surface. Stack height should not exceed 1m. It is recommended that sheets are stored indoors where possible. If sheets are being stored outdoors, they must be covered with an opaque cover, tightly secured, to protect from wind, rain and sun.
Transport and handling Rooflights should be transported horizontally on flat, sturdy pallets, equal to or longer than the longest sheet. Short sheets should be stacked on top of the longer ones. All panels should be secured and properly fastened to the pallet during transportation. Rooflights must be handled with care all times as it is a glazing material. NEVER walk on the rooflights if access to the roof is required, use walking boards placed across at least three purlins to spread the load. Sheets must be lifted cleanly off the stack. Sheets in excess of 3m long should be carried by more than one person.
Cutting When cutting the sheets, you must support the sheet to avoid stress and vibration. The blade should only protrude through the sheet by about 10 mm. If the blade is too far through the sheet, the blade ‘chips’ at the sheet producing a bad cut.
Cutting multiple sheets can be achieved but extra care must be taken. Polycarbonate sheets can be cut with a variety of tools:
• Fine tooth hand saw: hold the saw at a shallow angle and cut with slow steady strokes.
• Jig saw fitted with a metal cutting blade
• Band saw fitted with a high-speed metal cutting blade
• Circular saw fitted with a diamond grit blade.
• Angle grinder with thin metal slitting disc.
The basic blade characteristics which we have used for multiple sheets is:
Circumference speed = 2400 m/min Tooth spacing = 10 mm approx. Diameter = 250 mm approx. Clearance angle = 20-30° Rake angle =15°
Drilling Polycarbonate sheets can be drilled by hand or power drills. If using a power drill, set to a slow speed. Support the sheet underneath the hole position to avoid vibration. When drilling holes always allow for thermal movement. Support the rooflight directly under the drill.
Fixing instructions
The use of translucent sheets at the edge of the roof surface must be avoided. The combination of translucent sheets under fibre cement accessories is not recommended.
Filler blocks Polycarbonate sheets must be supported at each purlin position, using profile filler blocks or the FarmTec Fibre Cement sheet.
Sealant Polycarbonate sheets must be sealed using a 10mm diameter butyl strip sealant. Place a row of sealing strip either side of the purlin centre line, separated by about 10mm at the end laps and top of the polycarbonate sheets (so the fixing is in between the 2 strips of butyl). Side laps are single sealed, with the butyl strip positioned outside the line of side lap laplox fixings. (Ensure that butyl strip being used is compatible with polycarbonate.)
Mitring The polycarbonate sheets do not require mitres, and the corresponding corner of the FarmTec sheet should also be unmitred. Since the build-up of compound layers at end lap situations does not occur.
Fixing positions Polycarbonate rooflights should be fixed through every corrugation at the end lap and intermediate purlin using the same fasteners for the FarmTec sheets, apart from the side lap corrugations. Polycarbonate roofllights should be pre-drilled with an 11mm hole at all purlin fixing positions. (This is for polycarbonate sheets only and not the fibre cement sheets).
In addition, self-sealing fasteners with a synthetic rubber shank (laplox) or seam bolts and washers with a wide bearing, should be used at 300-400mm centres for side stitching to the adjacent sheet the hole should be pre-drilled to suit the selected side stitch fixing chosen. It is advisable to use weatherproof caps, and washers where possible, that are a distinctly different colour to the fixings for the rest of the roof. The rooflight fixings act as a warning that this location is always fragile and should be avoided.
Conventionally, poppy red caps are used for rooflights.
Panel orientation Ensure that the clearly marked UV protected surface of the polycarbonate rooflight is to the outside. Polycarbonate rooflights must always be installed with the corrugation running vertically, or up- slope.

Please note, the image representing each colour is for reference only. The product is represented by the first image.

What you need to know

Delivery charges

  • The delivery charge will be shown in the checkout.
  • If the delivery is missed for any reason, you will be billed again for the re-delivery. See below: failed deliveries.

Delivery access

  • Eternit deliveries are made to kerbside and require hardstanding ground. All Eternit deliveries are delivered on one of the following vehicles:
  • Artic Trailer
    • Max Height – 14.8M
    • Max Width – 2.4M
    • Max Length – 15M
    • Carrying Capacity – 26T w/o Moffett – 24T with Moffett
  • Rigid Vehicle
    • Max Height – 14.6M
    • Max Width – 2.4M
    • Max Length – 12M
    • Carrying Capacity – 14T w.o Moffett – 11T with Moffett
  • Our sales office will need to be made aware of any delivery restrictions, such as narrow lanes, overhanging trees etc. that may cause restrictions. 
  • You must be present to accept the delivery. Please note delivery drivers have the right to refuse to offload material if deemed unsafe. 

Date and time of delivery

  • We will advise a delivery date to you by email, and your order will be delivered directly to you from Eternit.
  • Delivery will arrive between 8am – 5pm at unspecified times.
  • Charges will be applied to all deliveries which take over 1 hour.

Failed deliveries are chargeable

  • You must be present to accept the delivery.
  • Failed deliveries will be chargeable depending on the distance and product weight of the goods ordered. Please ask Roof Gant to confirm these charges. 

Damages & missing items

  • All damaged or missing items should be reported to the driver and signed for as damaged or missing, wherever possible.
  • Contact Roof Giant within 24 hours of receipt with all details so we can help you. If you wait too long, we may be unable to help.
  • Any damages must be photographed and submitted along with your claim by email to

Do not install purchased items if you have a query with the product (e.g. if you need to query damage that occurred during transit).

  • If an item is installed it will not be refunded or replaced. 

Sheeting Giant delivery Q&A


How much does delivery cost?

Delivery charges will vary and will depend on the manufacturer, weight, size and delivery location. The cost is automatically calculated when you add items to the shopping basket.

How long will I wait for my delivery?

The estimated delivery times are shown on each product page, we will email you each step of the way to keep you informed. The majority of products can be delivered within 3-5 working days. We will advise you if the delivery period is different from than stated on our website.

Do you offer NEXT DAY delivery?

We currently do not offer next day delivery but hope to offer this soon. If you have a particular item that you require quicker than the guide on our website, please contact our sales team on 01858 455445 during office hours, they will be able to confirm whether a quicker delivery if possible.

What if my delivery doesn't turn up on time?

Please contact our sales office on 01858 455445 or email and we will advise on the status of your order.

Do you offer FREE Delivery if I spend a substantial amount?

Not as standard, we show the delivery charges separate once you go to the checkout so it is clear what you are paying for the products and delivery costs. If you are ordering larger quantities please contact out sales team who will be able to confirm if this is possible.

Do you deliver on Weekends?

Not as standard, our deliveries are made Monday to Friday. If you do need an urgent Saturday delivery please contact out sales team on 01858 455445 during office hours who will be able to confirm. This will incur a premium charge if possible.

Do you deliver to Northern Ireland/Guernsey/The Scottish Highlands/Isle of Wight?

Yes, we do but our transport charges incorporated in the site do not cover these areas, please contact our sales team on 01858 455445 during office hours for costs; or we will contact you to make the additional payment once you have completed your online purchase.

What if my delivery doesn't turn up on time?

Please contact our sales office on 01858 455445 or email and we will advise on the status of your order.



Important Note: Please do not send goods back to Sheeting Giant before speaking to the Sheeting Giant sales office. 

Sheeting Giant strongly recommend you take photographs of goods before returning. Occasionally goods are damaged during transit, therefore you may need to confirm the packaging/goods were intact (prior to collection) to the courier as part of the refund process.

As a consumer you have the right to change your mind (Consumer Regulations 2013). This right stipulates that for most products purchased online you have a legal right to change your mind within 14 days and receive a refund under the consumer contracts regulations 2013.

This right starts from the point you or someone you nominate receives the goods. If your goods are being delivered in multiple deliveries your right starts from the point the last delivery is received.

If you wish to exercise this right you must in the first instance contact us via phone 01858 455445 or email advising us of your wish to change your mind, its then your responsibility to arrange for the goods to be returned to us within 14 days of ending the contract.

For more information on our full returns policy, click here.