What type of screw for polycarbonate roofing?

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There are many different types of roofing screws. So which one should you use?
This video shows you what type of fastener you should be using for your polycarbonate, acrylic, Plexiglass, Perspex, Twinwall, multi-wall, plastic or PVC roofing.
You can't use a standard roofing iron screw as it doesn't have a big enough washer. You also can't use standard screws as they don't have any washer at all, so your roofing will leak.
The key thing is all plastic or clear roofing requires an expansion hole. This is to allow for the thermal expansion and contraction that takes place with the sheets. If you don't have an expansion hole, the roofing will start to crack where the screws are.
We sell the One Shot and Multipurpose fasteners for corrugated and profiled roofing. These drill their own expansion hole. They're 50mm for corrugated or Greca, and 65mm for 5-Rib (a product with a taller ridge).
We have Weatherlock fasteners for Custom Glaze. And we have Twinwall fasteners for the Twinwall or Multiwall products.
0:00 Intro
0:14 What not to use
1:14 Profiled roofing
2:57 Twinwall roofing
3:17 Flat solid roofing
Hopefully this is helpful. If it is, please like and subscribe!
Sunnyside Outdoor Roofing and Shade
DIY tips for building pergolas, awnings, blinds, outdoor shade and more.
If you're looking to buy great value polycarbonate and acrylic roofing, outdoor blinds, shade sails, and retractable awnings, you'll find it at Sunnyside. In business since 1966, with delivery throughout NZ.
sunnyside.co.nz
09 390 4414

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Опубликовано:

14 авг 2024

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Комментарии : 9

@firststep7750 3 месяца назад

I'm glad I found this! I purchased the fasteners without the expnsion hole cutter thinking it would seal my corrugated polycarb roof better given a bigger hole in hacked through it. I'm glad too I haven't started installing the roof and I kept the Bunnings receipt for the screws. Just need to figure the water proofing of the roof against a compressed fibro. Cheers.

@people-of 3 месяца назад

Hi there, glad it was helpful :) Perhaps you could use some sort of flashing for the fibro? Thanks, Kurt.

@firststep7750 3 месяца назад

@@people-of As it turns out I'm investigating flashing along with a rubber sealant. Unfortunately it'll rain tomorrow so will have to wait it out before continuing. Cheers.

@alexk6745 19 дней назад

Is there a fastener which lets to fasten solar panel brackets to which aluminium panels will be mounted with panels? I have a pergola quite big enough and I'd like to put solar panels on that pergola instead of the house as I do not want water leaks in the house.

@sunnysidenz 17 дней назад

Hi there, generally your solar panel brackets will come with fasteners for fixing to a roof. Usually it'll be a system that has a washer that goes between the bracket and the roof, to prevent leaking. For polycarbonate roofing you'll need to make sure this washer is large enough to cover the expansion hole. You might need to purchase oversized washers. Thanks, Kurt.

@alexk6745 16 дней назад

@@sunnysidenz I have wooden planks 80x50mm, so decided to take 20x3mm steel flatbar cut into 120mm pieces. Make 8.5mm holes at the ends so that 82mm distance between holes. Using threaded rods 8M clamp the flatbars and make holes 15mm in corrugated sheets. in the top part of the rod put pair of nuts and between those nuts leg which will be holding the rail for solar panels. PVC 0.7mm will be plaing role of the oversized washer.

@user-yb6qn9cr5y 2 месяца назад

so helpful

@mateostabio Месяц назад

Thanks! Just trying to complete a video to release soon, and I've been trying to find the plastic screw caps I used to install my multiwall-honeycomb 8mm polycarbonate sheets, (with the rubber donut that goes under them) But can't find them anywhere!! I hope I can find these metal screws with neoprene and washers with neoprene tomorrow... Do you recommend a special screw for this or NOT recommend a particular screw, like zink or stainless? also how big should the expansion hole be? I'm having this crackling noise in my gazebo, you can watch my video to see what im talking about. when its sunny or sunny and windy, the crackling is bad, its not super super bad like ive seen in some videos, but id like it to be 100% quiet. I'm hoping its just the screws, but im also reading it might be because I didn't put anything like a tape between my polycarbonate sheets and my purlins. Could that be it? I know theres a few screws that are on there too tight, and I know I made the screw holes the same size as the screws, so these are the two things I'm trying to tackle and fix before releasing my polycarbonate roofing video to show people what NOT TO DO. Thanks for your help. Also, if you wanna be featured in my video as the expert and give me some pointers or recommendations, I'd be happy to discuss!

@sunnysidenz Месяц назад

Hi Mateo :) Hopefully you found some suitable screws for the multiwall. You need something with a large metal washer and then a neoprene washer underneath. And since it's outside it needs to be either galvanized or stainless. Either one is fine. Stainless will last longer, but galvanized will last longer than the sheets anyway. In terms of cracking, there are a number of causes. One of them will definitely be the screws not having an expansion hole. You'll need to drill a 12mm expansion hole first (about half an inch). Also, the screws may be too tight. The second thing might be no room for expansion in the joiner. Is there a bit of a gap for the sheets to move in that joiner? Happy to help out on one of your videos :) I'll DM you.

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