How many shingles do I need for my shed roof?

May 23rd, 2020 8:59 am

#1

tonershop [OP]: Deal Addict; Nov 9, 2011; 1286 posts; 1726 upvotes; Toronto

May 23rd, 2020 8:59 am

How many shingles do I need for my shed roof?

I have an 80 sq ft shed, accounting for 20% waste - I would need about 100 sq ft of shingles.

But I am confused by Lowes' product description - it says that this bundle has 33.3 sq ft coverage - do they account for half of the shingles that are being overlapped during install?
https://www.lowes.ca/product/roofing-sh ... les-394098

Do I need 3 of those bundles or 6 bundles for my 80 sq ft shed?

I am completely new to this obviously - I just watched some YouTube videos and I think these are all I needed in terms of materials..

Drip edge
https://www.lowes.ca/product/drip-edges ... dge-274960

Underlayment
https://www.lowes.ca/product/roofing-un ... ent-888445

600 pack 1" roofing nail
https://www.lowes.ca/product/roofing-na ... ils-576246

Do I need anything else?

Thanks

May 23rd, 2020 11:12 am

#2

mrweather: Deal Fanatic; Aug 29, 2011; 9549 posts; 6682 upvotes; Mississauga

May 23rd, 2020 11:12 am

Does a shed roof really need underlayment and drip edge?

May 23rd, 2020 11:40 am

#3

TLSRULZ: Deal Addict; Apr 18, 2005; 3757 posts; 1966 upvotes; Mississauga

May 23rd, 2020 11:40 am

It's Lowe's and HD... just buy a little extra and after done .. return unopened packs.
Last I checked for a 10x10 gable shed it was 5-6 bundles.

And regarding underlayment...... I would put it on.... it will be a few extra $$ probably 1 or 2 rolls .. but will extend the life of shingles.. drip edge is debatable... but again are we going to quibble over $30 ?

+3

May 23rd, 2020 1:41 pm

#4

tonershop [OP]: Deal Addict; Nov 9, 2011; 1286 posts; 1726 upvotes; Toronto

May 23rd, 2020 1:41 pm

Thanks @TLSRULZ

But it appears that I only need 3 bundles of shingles and 1 roll of 15lb felt as per this Roofing Material Calculator: https://www.inchcalculator.com/roofing-calculator/

The drip edge is probably not necessary as the current shed does not have any - but for $30ish dollar.. I might as well do it "right" where I can.

May 23rd, 2020 3:27 pm

#5

TrevorK: Deal Expert; Aug 2, 2001; 18659 posts; 10054 upvotes

May 23rd, 2020 3:27 pm

Are you doing a starter strip and have you accounted for that?

May 23rd, 2020 3:29 pm

#6

hoob: Deal Fanatic; Jan 6, 2002; 6740 posts; 7437 upvotes; Toronto

May 23rd, 2020 3:29 pm

Four thousand one hundred and sixty-eight.

Si Tacuisses, Philosophus Mansisses

+1

May 23rd, 2020 4:02 pm

#7

tonershop [OP]: Deal Addict; Nov 9, 2011; 1286 posts; 1726 upvotes; Toronto

May 23rd, 2020 4:02 pm

TrevorK wrote: ↑ Are you doing a starter strip and have you accounted for that?

Yes I am and I figured that should be accounted for with the 25% extra - only needed 80 sq ft.

May 23rd, 2020 4:03 pm

#8

tonershop [OP]: Deal Addict; Nov 9, 2011; 1286 posts; 1726 upvotes; Toronto

May 23rd, 2020 4:03 pm

hoob wrote: ↑ Four thousand one hundred and sixty-eight.

huh?

May 23rd, 2020 4:10 pm

#9

User452441: Deal Addict; Oct 22, 2016; 1025 posts; 963 upvotes; Comox Valley

May 23rd, 2020 4:10 pm

tonershop wrote: ↑huh?

He is playing a joke on you. I did laugh myself.

You need 3 bundles for sure. I suggest buy 4 to have it on hand, if needed.

Use underlayment, well worth it. May be cheaper at roofing supply store.

Your nails are 1”, I suggest 1 1/4” for further fastener into the deck, and easier to nail.

Your choice about drip edge.

+1

May 23rd, 2020 4:23 pm

#10

tonershop [OP]: Deal Addict; Nov 9, 2011; 1286 posts; 1726 upvotes; Toronto

May 23rd, 2020 4:23 pm

User452441 wrote: ↑ He is playing a joke on you. I did laugh myself.

You need 3 bundles for sure. I suggest buy 4 to have it on hand, if needed.

Use underlayment, well worth it. May be cheaper at roofing supply store.

Your nails are 1”, I suggest 1 1/4” for further fastener into the deck, and easier to nail.

Your choice about drip edge.

Thanks!

May 23rd, 2020 4:51 pm

#11

User452441: Deal Addict; Oct 22, 2016; 1025 posts; 963 upvotes; Comox Valley

May 23rd, 2020 4:51 pm

tonershop wrote: ↑Thanks!

Be aware that starter shingles, are a different type of shingle than what you have posted. Usually flat as photo enclosed.

As for your drip edge, there are different types, good site here
https://www.iko.com/na/pro/building-pro ... gle-roofs/

For shed roof at the gable ends, I would just use the type C (L shaped). At the eves if you do want one, you want a drip edge that is more like type d, as it is not a 90 degree at this place, due to roof slope.

Images

+1

May 23rd, 2020 6:02 pm

#12

Jerico: Deal Guru; Jan 25, 2007; 12633 posts; 7778 upvotes; Paris

May 23rd, 2020 6:02 pm

3 bungles, proper drip edge, and I used lower end underlay as it is just a shed, but I still put it on all the way up.

What about a peak vent and capping the peak?

Edit: also 1” nails are a bitch to hold. I suggest 1-1/4” or 1-1/2”.

+2

May 23rd, 2020 7:01 pm

#13

tonershop [OP]: Deal Addict; Nov 9, 2011; 1286 posts; 1726 upvotes; Toronto

May 23rd, 2020 7:01 pm

Thanks @User452441 & @Jerico for your advices - I definately need more research. I figured it is a good DIY project since I don't really care much about this shed.

May 23rd, 2020 7:08 pm

#14

Jerico: Deal Guru; Jan 25, 2007; 12633 posts; 7778 upvotes; Paris

May 23rd, 2020 7:08 pm

tonershop wrote: ↑ Thanks @User452441 & @Jerico for your advices - I definately need more research. I figured it is a good DIY project since I don't really care much about this shed.

When in doubt, search YouTube for “Ask This Old House” videos on whatever topic. I find their stuff to be pretty great.

+1

May 23rd, 2020 7:48 pm

#15

Drthorne: Deal Fanatic; Nov 18, 2005; 5106 posts; 1542 upvotes; Kitchener

May 23rd, 2020 7:48 pm

Ridge cap, or you can cut from matching 3 tab shingles

https://www.homedepot.ca/product/gaf-se ... 1000731226

Get a knife and these hook blades for cutting, makes it go quicker

https://www.homedepot.ca/product/olfa-1 ... 1000183785

May 23rd, 2020 8:54 pm

#16

User452441: Deal Addict; Oct 22, 2016; 1025 posts; 963 upvotes; Comox Valley

May 23rd, 2020 8:54 pm

tonershop wrote: ↑ Thanks @User452441 & @Jerico for your advices - I definately need more research. I figured it is a good DIY project since I don't really care much about this shed.

You are on the right track. Post Photos of your shed, and Dimensions of it, we will narrow it down for u.
Cheers

May 23rd, 2020 9:07 pm

#17

CaptainCrash: Deal Addict; Apr 10, 2009; 2682 posts; 2340 upvotes; Ontario

May 23rd, 2020 9:07 pm

General rule is 1 bundle for 1 4x8 sheet of plywood. buy 1 extra. Better to be looking at it than looking for it.
Especially with lines to get into HD/Lowe's.

+2

May 23rd, 2020 9:59 pm

#18

tonershop [OP]: Deal Addict; Nov 9, 2011; 1286 posts; 1726 upvotes; Toronto

May 23rd, 2020 9:59 pm

Drthorne wrote: ↑ Ridge cap, or you can cut from matching 3 tab shingles

https://www.homedepot.ca/product/gaf-se ... 1000731226

Get a knife and these hook blades for cutting, makes it go quicker

https://www.homedepot.ca/product/olfa-1 ... 1000183785

Thanks, I will cut the ridge cap from the 3 tab shingles. I saw a YouTube video on that.

I already have that hook blade.

How many shingles do I need for my shed roof?

How many shingles do I need for my shed roof?

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