Storage Shed Roofing Question

[Mike Goetzke]

Finally finished my shed extension project (8x8 to 8x12). The barn style roof has three tiers. As the shingles ended up at one tier there is only about a 2"-3" overlap so I took my heat gun out to soften the shingles and tar and pushed them over. They seem nice and solid but I just noticed on my neighbors shed they also nailed this shingle and put caulk over them but it doesn't look great. Think nails are necessary if I already got the tar to adhere?

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[waho6o9]

My understanding is exposed nails is not good, water travels the path of least resistance, like into the shed.

 

[Cheese]

Think nails are necessary if I already got the tar to adhere?

Nope...that's asking for a problem and besides it looks horrendous. Just keep your eye on the overlapped shingles and apply some mastic if needed. Loctite makes some for a caulk gun. In high wind conditions the uncovered nails also increase the potential for the shingles tearing.

 

[carrgordon]

I’ve done a few roof projects myself, and while the tar adhesion is definitely helpful, I’d still recommend nailing the shingles in place. It just gives that extra level of security, especially in windier conditions. I had a similar situation when I was working on my roof, and I found that the extra step made a big difference in the long run.

 

[luvmytoolz]

I must admit the shingled roofs have me baffled. I can understand for a house they're a good look, but for sheds and other sorts of non-residential structures, why aren't metal galvanised/zinc sheets more prevalent?

It would seem to be a far cheaper and less labour intensive process compared to shingles, not to mention the future upkeep is pretty much zero.

Here in OZ if you wanted shingles instead of tiles or metal sheets, that would be a specialty job that would probably double the labour cost.

 

[jeh]

I must admit the shingled roofs have me baffled. I can understand for a house they're a good look, but for sheds and other sorts of non-residential structures, why aren't metal galvanised/zinc sheets more prevalent?

It would seem to be a far cheaper and less labour intensive process compared to shingles, not to mention the future upkeep is pretty much zero.

Here in OZ if you wanted shingles instead of tiles or metal sheets, that would be a specialty job that would probably double the labour cost.

Depending on placement in reference to the house it might be visually appealing to have the same roof. Agree on the labor if you know how to do it and have the tools or can find a company to do small jobs at a reasonable price.

 

[jeh]

Think nails are necessary if I already got the tar to adhere?

Nope...that's asking for a problem and besides it looks horrendous. Just keep your eye on the overlapped shingles and apply some mastic if needed. Loctite makes some for a caulk gun. In high wind conditions the uncovered nails also increase the potential for the shingles tearing.

I would avoid the nails because I believe you need to cover them with tar anyway which hides the metal but leaves less obvious black dots. If you do use some type of tar I would not do a straight line across. Leave some slots for water to get out should it makes it up under. Probably a few dots on each shingle. Unless you are in a high wind zone it may not matter in the end.

 

[Cheese]

I must admit the shingled roofs have me baffled. I can understand for a house they're a good look, but for sheds and other sorts of non-residential structures, why aren't metal galvanised/zinc sheets more prevalent?

It would seem to be a far cheaper and less labour intensive process compared to shingles, not to mention the future upkeep is pretty much zero.

Here in OZ if you wanted shingles instead of tiles or metal sheets, that would be a specialty job that would probably double the labour cost.

Ya, you're pretty much on the numbers... [smile] ...in the US, anyone that owns a hammer and a screwdriver...and the screwdriver is optional by the way...thinks that they have the expertise to perform most any home repair and shingling a shed would certainly be high on their bucket list because it's so damn easy.  [eek]

A quick conversation between the homeowner and his wife would sound similar to this, "Gotta use that hammer I inherited from uncle Ted for something and this shingling project seems perfect."

Cutting corrugated sheets...that'd require a saw that uncle Ted never bequeathed the home owner.
Cutting tiles...that'd also require a tool that uncle Ted never bequeathed them...after all, they just own the hammer and the screwdriver.  [smile]

 

[usernumber1]

shingles are cheaper and other than weight, they are easier to install and transport and handle and need less tools

way more forgiving until down the line when wrong nail placements leak. but the roofs just dry and all that happens is it needs replacement in 10-15 instead of 20year

edit: no exposed nails you are supposed to use a ridge cap that's meant to cover the last row. also consider vented ridge cap but that's too late now
the ridge cap has an order of install to match your prevailing winds in the area

here's a nice video. the ridge cap shingles overlap each other and you use the nails that are covered. only the very last one gets glued. this way you get the best of both worlds

again shingles are kind of done every way you can imagine and however you feel like seems to work most of the time