How to Install Corrugated Polycarbonate Roofing | Mitre 10 Easy As DIY

If you’ve got a Pergola attached to your house then you might want to give yourself some extra shelter and protection from the weather, simply by installing some corrugated polycarbonate roofing. We'll show your how to DIY with Mitre 10.
See the full guide here:
mitre10.co.nz/guides-and-advice/guide/how-to-install-corrugated-polycarbonate-roofing

[@sterling5052]

An amazing instructor and teacher, absolutely love the way you present yourself and explain what you're doing; 10/10. I came here originally just to see what others are using for their fastener screws but ended up staying for the whole video unintentionally just because it was a delight to listen to and watch you work, the little nuances you teach are fantastic things to keep in mind to make things overall more efficient and easier on you during the job, thank you for the insights~!

[@mitre10nz]

Cheers! ^Matt

[@madeleineserle9576]

Seriously you know when you are seeing and listening to an expert. I am totally impressed with Sam’s care and design detail - and Sam’s style of instruction is so thorough and clear! 👏🏼👏🏼👏🏼 I feel confident to get and try to do my jobs well - even if I’m very slow

[@mitre10nz]

Thanks so much for the awesome feedback Madeleine, let us know how you get on with your project ^Kane

[@wairarapagates4857]

I've been building for 30 + yrs and I still watch these video tutorials for tips and tricks, always leaning.

[@mitre10nz]

That is awesome!

[@robertbutler8004]

And do you call roof battens purlins like this guy?

[@wairarapagates4857]

Yip, we even have purlin screws,,@@robertbutler8004

[@lukehiki9170]

​@@robertbutler8004 in our code here in NZ that's the technical term bro "purlins" ceiling battens for us are the internal framing members used for fixing you ceiling lining to.

[@bert454]

​@@robertbutler8004Does it matter!??

[@simonelrick6265]

Greetings all the way from South Africa. I want to say thank you for the super simple and well explained tutorials. You have given me the confidence to put up a new car port before the winter rains. As of this morning I have successfully installed 6 polycarb roofing sheets and it looks fantastic. I couldnt have done it so well without you mate! Thanks again.

[@johnchapman3300]

...really good uh!

[@mitre10nz]

That's awesome to hear, good on you! ^Matt

[@jbelme1]

Excellent. I’m going to install a small corrugated roof over my quail pen but I’ve never worked with the plastic roofing. I’ve got it now. Thanks for your video.

[@mitre10nz]

No worries :) ^James

[@cheronatunrase4569]

I’m installing this material in my cats Catio.

[@EileenNestman]

I’m doing a chicken coop with it

[@JSP-vq6jy]

Please ignore the negative comments by ignoramuses. You have done a fantastic job on all fronts-Subject, method, technic, tips, narration, video and audio.Truly professional. Congratulations and hope the world tunes in and learn.

[@weston0614]

JSW PETERS.... I agree! The worst part is these people are grown ass adults who hide behind a screen name and behave like jerky, little children. Actually, I apologize to the children, mine would never be so rude and disrespectful.

[@JSP-vq6jy]

Your wit hits the nail on the head! :)

[@paulyoung2308]

I saw a vjidio which suggested pouring boiling water on the sheet which softens the sheet for easier cutting.

[@aliciabrewton531]

Suntuf clearfix screws. Took me forever to read the clearfix on the bag. Then searched it. Your welcome people!

[@Reiki_Bee]

Alicia Brewton - Thank you!!!

[@sailorman8668]

you're

[@judiwiegel8181]

Much appreciated.

[@Scottiewat]

Wow was scrubbing for so long and then decided to read comments. Thank you!

[@johnwayne330]

You’re *

[@chrisoliver6690]

So glad I found this channel, probably the best produced instructional video I've seen in a long time. Thanks a bunch!

[@enekelek7186]

C Oliver ptchgfgrl

[@juliecravino2131]

bathroom ewno

[@juliecravino2131]

@@enekelek7186l

[@enekelek7186]

@@juliecravino2131 sorry dude! :D

[@dayriderschat]

Soooo helpful ..... Thanks Mitre 10 ..... Your instructor deserves a pay rise !

[@avneetkaur8538]

Graham Spink 19dvxz45ff. G g

[@germanshepherdlover2613]

Great video, very helpful. Love the Kiwi accent, similar to us but also different 🙂cheers from your "cousin" across the ditch in Australia

[@annawarner1078]

Excellent! Thank you for posting. I wish I've seen this video before hiring contractor to install my backyard cover. Now I know that he did many things wrong.

[@rotesritog3900]

No worries at all! My Shed Plans brings me up to speed with professional tips and tricks used by the pros [Go Here=> *WoodBlueprints. Com* ]. It really let me learn how to handle carpenter equipment, follow the right safety rules, and how to do your projects professionally so that they will look good and last!

[@RAGAHAAR]

Great shot of him cutting it from underneath! Right through the clear roofing. Clever

[@evankeitley9264]

Much more informative than any Aussie bunnings video! Thank you! ( I'm an Aussie) 😀

[@fernandomartin624]

So clear great explanation I'm going to do a similar project soon. Great info! Thanks!

[@mitre10nz]

Glad to hear it - let us know how you get on! ^Meg

[@megapangolin1093]

Cracking, helpful, professional workmanship explained. Terrific video, thanks for the tips and guidance. It is the small details that make the difference.

[@mitre10nz]

Thanks heaps for the support! 🙌 ^Cam

[@oldmrt]

Thanks Samuel - great instructions and a really convincing accent 👍

[@mitre10nz]

Glad it was helpful!

[@ToTheSummitkicksass]

really glad you left room on your pergola to do another video on this! perhaps greenhouse poly on the sides to keep plants warm in winter on another video?

[@samol1no]

Probably the best tutorials out there, very good explaination through out the whole procedure ,, just subscribed and glad to have found you through the youtube jungle.

[@robertsaca3512]

I found the best way to cut with with a nibbler. Fast, clean cuts.

[@damianbutterworth2434]

In the UK you can get some foam like stuff that matches the roof pattern so the roof sits on it and make a nice tight fit.

[@torihvrris]

We call it Ecofoam here

[@carlosfandango5763]

and its probably the most expensive (for a small pack of foam) part of the job

[@GEOsustainable]

Great tips. Nice looking finish.

[@rebecahfreeling691]

Hi! I'm glad I watched this before roofing my catio. But why did you put the screws through the "hill" of the roofing and not the "valley"? I assumed it would be more secure to screw through the part that touches the wood frame.

[@mitre10nz]

The reason for drilling through the crests (hills) and not the valleys is because water pools and runs down in the valleys and is more likely to get in through the screw holes if the screws work a little bit loose. Debris can also get stuck in the valleys around the screws and this could end up damaging the roof. ^Meg

[@Cubevanlife]

I just roofed my catio with this stuff as well.

[@blingmeblingme101]

Brilliant! I am about to cut some polycarbonate and wanted to know the best tool. Tin snips! Too easy!! Awesome tutorial.

[@randelllmalavida]

Awesome work Bruce!!! That was one Hell of a detailed explanation, well done!!! It was as good as seeing your worst enemy ambushed by a couple of angry Juvenile Joey's in the bush. Gday Mate!!! Randy Chavez USA

[@mitre10nz]

Glad you enjoyed it Randel, what a comparison! ^Cam

[@danielhughes5614]

Just make sure you buy the correct washers for fixing the Polycarbonate sheeting. I didn't and the washers turned out to be for PVC Sheeting. End result ? Over a period of about 2 years some of the washers ate holes through the sheeting. Lesson learned the hard way.

[@creamcheese7845]

You guys make it look so easy. Knowing me I’ll find some way to stuff it up

[@mitre10nz]

You'll be fine mate, just follow instructions ^Charlie

[@vosboss9761]

@@mitre10nz is this material good for rain? like water proof? for long period of time?

[@mitre10nz]

Hi Vos, Some info here Solasafe Corrugated Polycarbonate Sheeting www.mitre10.co.nz/shop/solasafe-corrugated-polycarbonate-sheeting-5400mm-grey/p/162802 Keeps 74% light out on hot summer days. 99.9% protection from harmful UV rays. Highest standard 1-S Group Fire Rating. Impact strength up to 150x that of tempered glass. Lifetime warranty on discolouration. Warranty on damage from heavy hail up to 25mm diameter. Lightweight and easy to install. Hope that helps ^Ryan

[@adrianb.6880]

Looks great but the apron sheathing on top of the corrugated panel is overkill. He already installed spacers behind the wall ribbon board to let the water drain. So why make it watertight on top? This is an outdoor structure anyway. Also, opening the siding to slide the apron may work on wood siding but is not an option for aluminum or vinyl siding which is common in North America. Trying to pry open the vinyl or aluminum the same way he is doing here will destroy the siding.

[@lorus511]

Just wondered why you didn't use eaves filler? I know it's expensive but isn't it supposed to stop wind from getting underneath the sheets and lifting it up?

[@wretchedrue7859]

That's what I'll be using as it will be a greenhouse lean to

[@johnrogan9420]

Kiwis..clean cut and ambitious...Peter Snell RIP...what an inspiration to boomer runners.

[@veronicabeat5709]

Lo hace y lo explica tan sencillo que podría hacerlo yo misma y aún sin nada de ayuda. Muchas gracias. I understand all. Thank you.

[@mitre10nz]

Cheers for the awesome love and support 🙌

[@weston0614]

Thank you for the informative video. Ignore the rude remarks from those ignorant people.

[@dvssayer5621]

Hello way down there! Wont water get in between the overlapped corregated plastic roofing panels? And you didnt use those squiggly boards to nail the corregated sheets to. This looks very simple. Ive seen some put silicone along the line between the sheeting. Curious about water getting thru?

[@paulflores7292]

Right. Id like to se a video of this today im sure water got in there

[@HighLeeCoyote]

Great tutorial. Thanks!

[@michaelerbreviews]

I would have used horizontal closure strips underneath the sheets.

[@diymanbelfast2897]

Good job and great tips thanks for sharing

[@racheldondero5992]

If you can't find the fancy screws, would deck screws and a bit of silicone work to screw it through the channels instead of the ridges?

[@hjunnaid]

Brilliant ideas and the man know what's he is doing

[@mitre10nz]

Thanks mate! 😊 ^James

[@slamtilt01]

It looks great 👍 but I was wondering if the drill holes 🕳 in the polycarbonate will let water 💧 in and begin the rot?

[@mattp5518]

You'll see the big rubber head on top of the screw. That sections on to the roofing so no water can get in

[@mitre10nz]

The roofing screws used have seals that prevent water from getting through the holes in the polycarbonate. So should be totally fine.

[@jackier7737]

Have you ever had to walk on the roof to make a repair? If so, how did you prevent falling through?

[@mushtaqahmad3129]

Thanks so much sir make easy for me from UK God bless you

[@nosubtv4242]

Good video, i need to do this job on mine. I noticed you didnt use eaves fillers, are these really necessary?

[@mitre10nz]

Each job can be different, but this job didn't require them 🙌 ^Cam

[@carlosfandango5763]

Finally a useful video. well done

[@stevecrowe176]

You didn't use noise stop tape between the purlins and polycarbonate sheets??

[@mitre10nz]

Hi Steve! Our teams would recommend doing so if noise might be an issue, but this isn't required 🤗 ^Cam

[@Theannahid]

I thought I could do it, but way difficult for me, but it was nice and informative how to do this delicate job.thanks a lot.

[@bjd423]

Why do you screw down the panels on the peaks and not the valleys? (great video btw)

[@mitre10nz]

Great question! We drill through the crests (peaks) and not the valleys because water pools and runs down in the valleys and is more likely to get in through the screw holes if the screws work a little bit loose. Debris can also get stuck in the valleys around the screws and this could end up damaging the roof. ^Meg

[@rocknrobin4022]

If you get a driving wind its going to push water right up under that flashing, theres no sealed water barrier that I seen installed 😮

[@simonstewart2764]

Did you use Purlin tape, and is there a correct side up for the PVC sheeting, as I think I installed my the wrong side up, will this make a difference,cheers

[@mitre10nz]

I did use purlin tape, it helps protect the sheeting and reduce noise from movement. As for the PVC sheeting, yes, there is usually a correct side up. The smooth side or the side with UV protection (often labeled or indicated on the packaging) should face upwards to prevent damage and discolouration over time. If it's installed the wrong way, it might still work but could have a shorter lifespan or discolour faster. ^Cam

[@simonstewart2764]

@@mitre10nz ch

[@simonstewart2764]

@@mitre10nz cheers mate lesson learnt for next time.

[@55maxtube]

Great pro job!

[@henrynavarra3260]

good job sir!!! bravo!!!

[@honztapu5988]

Bro awesome vid i was always taught before laying the polycarb sheets to line the perlins with a foam strip ,weather the top of the sheet with a heat gun and some pliers especially being on a 5° pitch and a small bead of silicone on the underlaps other than that bro awesome im learning heaps off of watching your vids thanks

[@sala6961]

Any chance of showing video of how to overlap one sheet over another infront of each other not side by side please? I'm having trouble aligning for water to easily flow downwards

[@mitre10nz]

Hi there, pop into your local Mitre 10 and one of the team can show you the best way to do this ^Ryan

[@sala6961]

@@mitre10nz thanks for your prompt response Ryan...unfortunately my local store has noone that is knowledgeable to help... : (

[@juancsanchez371]

Great job!

[@PropertyGuysNS]

Can you tell me the exact name and size of those screws please? This was very helpful!

[@BoGusaddy]

Suntuf Clearfix

[@theyack789]

Do the fixings have to be every second ridge or can you stretch it to every 3rd?

[@mitre10nz]

Hey there, we'd recommend having a chat to the team at your local store for some personalised advice - they'll also know the conditions in your area a bit better 👍

[@i.i1619]

Great job and nice Video

[@mitre10nz]

Thanks for the support! ^Cam

[@maryharrow5707]

Could you tell me the reason behind putting screws on the hills of the material instead of the valleys??

[@mitre10nz]

Hi Mary, great question! We drill through the crests (hills) and not the valleys as water pools and runs down in the valleys - it's more likely to get in through the screw holes if the screws work a little bit loose. Debris can also get stuck in the valleys around the screws and this could end up damaging your roof. ^Meg

[@gasgiant7122]

Great job👍

[@mitre10nz]

Cheers 👍 ^Matt

[@waterwolflures]

Great video

[@margaretallard3880]

Good job sir.

[@BSC419.]

Good video but why wouldnt you scree it down in the low spot where its in contact with the material

[@mitre10nz]

Good question! The reason for drilling through the peaks (hills) and not the valleys is because water pools and runs down in the valleys and is more likely to get in through the screw holes if the screws work a little bit loose. Debris can also get stuck in the valleys around the screws and this could end up damaging the roof. ^Meg

[@BSC419.]

@@mitre10nz makes total sense thanks for clearing that up. Cheers

[@Bangrilah]

Why do you put the screws at the top of the wave ? I was thinking I was going to put them in the bottom of the wave where the roofing touches the wood.

[@mitre10nz]

Great question! We do this because water pools and runs down in the valleys and is more likely to get in through the screw holes if the screws work a little bit loose. Debris can also get stuck in the valleys around the screws, which could end up damaging the roof. ^Meg

[@dustintunis9347]

Why screw it down at the peaks instead of the valleys? That seems backwards to me, but I assume there's s reason and I apologize if it was mentioned and I missed it.

[@stultuses]

Good question, I would guess that fixing it at the peaks instead of the valley might allow for more expansion and contraction since there is the height of the corrugated sheet vs the sheet being fixed at the valley and having no expansion possible Just a guess, I don't actually know why

[@mitre10nz]

Good question! The reason for drilling through the peaks (hills) and not the valleys is because water pools and runs down in the valleys and is more likely to get in through the screw holes if the screws work a little bit loose. Debris can also get stuck in the valleys around the screws and this could end up damaging the roof. ^Meg

[@dustintunis9347]

@@mitre10nz : Thanks for the reply, that makes sense.

[@videoforgeeks]

Where can you get those special screws as they don't seem to be sold here in the USA.

[@mitre10nz]

Hi ya, we have them here in NZ www.mitre10.co.nz/shop/clearfix-polycarbonate-fasteners-14g-x-50mm-pack-of-50-grey/p/192627 not sure what they are called in the USA, possibly roofing screws 😀

[@LostCaper]

I seen some videos using the foam enclosure under the panel where you screw down. You didn't use that. Is it needed.

[@mitre10nz]

You would use the foam in a closed roof structure as they are used to create weather tightness. In an pergola it’s not needed as it’s an open space.

[@dwaynesmithsonic1customz887]

What is that wind rated at?

[@robertramkhalawansingh4970]

This was a fantastic tutorial! Thank you!

[@Chiing2728]

Beautiful job

[@mitre10nz]

Thanks for the support Karen! 🙌 ^Cam

[@ryangleeson5916]

The stickers telling me the right side up have come off in storage. Is there a way of knowing what the correct way up is now ?

[@mitre10nz]

Best to check with your in-store team to get the right answer for you Ryan! ^Cam

[@tonyrecker4847]

Love it! Thanks good sir! Sweet as! Learned something else new too!

[@mitre10nz]

You're more than welcome Tony! 😊 ^James

[@738polarbear]

He did a very good job of measuring and installing and I find these pissy arse comments annoying.

[@escapefromny2012]

Typical for KZbin.

[@PaulWalsh-lk6mj]

You should use a drill with the torque set rather than an impact driver every time you put the screws in you had to Back them out again

[@gilbertlaitan9067]

Did this and now its leaking throught the gaps in between the weatherboard and roofing sheet. Water backflows

[@graemejones3575]

Don’t forget to capture any lingering wires and plumbing that the Saber saw may find you know the ones that shouldn’t be there

[@williamleung6456]

Can you update where I can find the details about of the 20 sq meter limit?

[@mitre10nz]

Best to speak to your local council for this! ^Cam

[@edenbrown9382]

Great videos! Just recently built a pergola with a roof over summer. Works great but now with winter it is so bad with condensation. Frosty mornings mean a wet deck. Any ideas how to stop this problem? The roof has some corrugated iron sheets (for shade) and some polycarbonate sheets(for light)

[@mitre10nz]

Have you given the wood a treatment coat to help with longevity Eden? Might be best to take a few photos of the pergola you've made into your local store and chat with the team who will be able to advise what's best 😊 ^Charlie

[@edenbrown9382]

@@mitre10nz thanks for the reply. I used treated wood and put a coat of paint on. Okay I'll take photos and go in store. 👍

[@kellyrollason5379]

Hi, what is the apron flashing made of please? I went into mitre 10 in my area and they didnt have anything like that in stock. Thanks.

[@mitre10nz]

Hey Kelly, it's made from galvanised steel - here's an example on our website www.mitre10.co.nz/shop/roofing-industries-apron-flashing/p/167013 . Would be worth having a chat to the team at your local Mitre 10 to see if they're able to order it in for you, if they don't have it in stock ^Meg

[@kmac2729]

as you install each sheet, it would be a good idea to seal each top end with silicone as you go, since the apron alone will not prevent the ingress of wind-driven rainwater. - I know this from experience...

[@Monsieur405]

So you'd also know that silicone and polycarb roofing don't mix as the silicone will eat the polycarbonate..

[@jaronstephens9894]

Silicon will go a horrible yellow colour. Unlikely it leak if you’ve got the lap sitting nice a tight.

[@waioracrofts4121]

Use a heat gun to soften the trough/pan then bend up with pliers like you would a metal roof. Use silicone on fiberglass

[@kmac2729]

@@Monsieur405 - " sealants not degrade in sunlight. They resist mold and mildew and remain flexible, allowing for building movement. ... This sealant adheres to , fiberglass, masonry, painted aluminum, painted steel, glass*, and wood.

[@joyofsox]

Would having an overlap of two ridges instead of only one make it less likely water might get in between and drip down?

[@memezilla4370]

@Dan Mattingly except it can if the pitch isn't enough, capillary action works in every direction, even vertically

[@henryt9254]

I just wonder how long will these corrugated board last under the sun and rain.

[@mitre10nz]

Hi there are different brands here that have different warranties and coverages www.mitre10.co.nz/shop/search?text=polycarbonate%20roofing&q=polycarbonate%20roofing ^Ryan

[@maxfreeland9050]

Excellent job I agree w/EyeQ

[@edoan73]

Can the rain water still be able to find its way into under the nail?

[@mitre10nz]

That's where your apron flashing at 2:01 will come in handy ^Kane

[@arielramirez3365]

Great video!!! Sheet thickness? Is it 0,8mm?

[@yolandarivera5185]

I always thought you attach this corrugated material on the flat that’s touching underneath not on top of loop 🤔

[@Zion-Bear]

Well you’re wrong buddy. You fix to the upper ridge for water proof reasons

[@johnsrealstateservices6182]

thank you very much for the perfect information that makes it easy to do anything.

[@heatherholmes6479]

Question. I want to do this to mine so I can sit out in the rain but worried that the wind will rip it off???

[@mitre10nz]

Hi Heather, these are generally very sturdy but if you do live in quite a windy area, it might be best to check with a local builder just in case 🤗 ^Cam

[@wonderwoman9170]

does it gets brittle under the sun in the long run?? specially in hot countries

[@mitre10nz]

Good question, we only supply polycarbonate roofing that is suitable for New Zealand conditions, and is built to last. Noting that environmental factors like high wind & erosion by sand can impact on this. If you are particularly concerned about longevity do check the specifications & make sure you get a premium version with the longest warranty period. Also ensure you follow the prep, care, & installation guides for the product. ^Cam

[@williamoloughlin8298]

Had mine up for 20 years over a 20m sq deck. The sheets are tough but now are getting a bit brittle and can crack if you apply too much pressure or place a walking board over them. good for 15 years but final 5 the UV protection seems to have waned but still doing the job. Understandable given New Zealand has some of the highest UV in the world. They have handled a number of storms and very heavy rain over the years, no issues, never had to tighten the screws. No purlin tape, no squeaking. You can staple the green windbreak mesh/net to the underside of the rafters and that gives a shade factor under the poly sheets, very comfortable on hot days. Screwed on every second ridge, always on the ridge, never in the troughs. (i know the USA has fixings in the troughs or flat rather than the ridges but logically it's a good idea not to punch holes where the water runs. You can affix the screws in the troughs if using the sheets as a side cladding for a cleaner look). I recall product advertising showing the sheets being driven over by a large truck and the profiles just pop back into shape when pressed. Noisy as hell in heavy rain. They come in tinted versions as well. Bronze and Smokey Grey.

[@mikedenby6771]

Out of interest - why do the screws go in the top of the wave? Would have expected it to go at the bottom of the wave so it can push the corrugation up to the purlin

[@planet_next_to_mars2058]

Yeah I was thinking the same.

[@speuan1]

Hi, water will mostly run down the bottom of the wave, so you don't want any holes in there.

[@mitre10nz]

Good question! The reason for drilling through the hills and not the valleys is because water pools and runs down in the valleys and is more likely to get in through the screw holes if the screws work a little bit loose. Debris can also get stuck in the valleys around the screws and this could end up damaging the roof. ^Meg

[@K541w]

What kind of screws are those

[@melcomc19]

Good for winter but in summer it gets very hot under there.

[@liampaish272]

heat aside, ampelite polycarb is UV resistant so you dont have to worry about getting sunburnt under there :)

[@ChenZhiKang]

In 08:27, where I can get the soft edge in Mitre10, what’s the name this called, “soft edge”? Thank you

[@2loco]

What do you install at the end of the last sheet to finish it off. I'm going to tackle the same project on my house but I'm not sure how I'm going to close that gap between the purlin and the rafter.

[@mitre10nz]

Hey there, to finish the end off you can purchase a barge flashing from Mitre 10. This is a basically a 90 degree metal flashing which covers the side and top edge of the roofing ^Matt

[@2loco]

@@mitre10nz thanks for your message 🙏

[@roncooke2188]

I cut my sheets with angle grinder, nice video

[@BSC419.]

Could this work for a greenhouse

[@mikea953]

i watch on video, will learn make difference myself but dont have certificate how get it

[@dukevonflankenheimer9430]

Beauty, thanks!

[@skorpyo331]

What I need for carport

[@stusmithmmm]

Nice job mate 👍!!

[@clearriver5987]

i use cheap bosch Cordless Drill for this screw impact driver is so strong

[@juliecravino2131]

That's

[@idaniamorales6058]

Beautiful

[@grahamwoolfall1214]

Hi I had these in my last gazebo that got destroyed in really bad winds in the uk.. any spacific way of putting them on a wooden home made gazebo