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Old 09-29-2011, 08:45 AM   #1
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How should i reroof this low slope porch- first time doing a low slope roof


I have taken all the old rolled roofing off and have areas of rotting sheathing. I am going to put down new 1/2" RTD plywood sheathing. The porch is an "L" shaped 18' 7" x 18' in dimensions. Could i have your opinion on how i should reroof this low slope porch?. I don't have the money to have it reroofed, so this is my first time doing a low slope roof and will be doing this myself. Any help you can give me will be much appreciated and i will post pictures.
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Old 09-29-2011, 09:20 AM   #2
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How should i reroof this low slope porch- first time doing a low slope roof


Looks a bit wet in your area.,.,It may have been a good idea to inquire before tearing the roof off.


My recommendation is to use a peel and stick roof system.It is very Diy friendly.


Make sure you purchase the base sheet that goes with the cap sheet.Follow the manufacture instructions then when you get 1 course away from the wall and before the pitch break where the flat meets the shingles repost and everyone can walk you through it.

Several courses of shingles will have to be removed so the material can go under the shingles.


Last edited by Roofmaster417; 09-29-2011 at 09:23 AM.
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Old 09-29-2011, 06:20 PM   #3
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How should i reroof this low slope porch- first time doing a low slope roof


Just a FYI, all peel and sticks are not the same. Some are meant to be an underlayment on a pitched roof where they will not be exposed to ponding water or on a low slope application. They will also have tiles or some other material over it because they are an underlayment albeit a peel and stick. They are not a "cap sheet". You need a cap sheet type of Peel and Stick..like an SBS Modified that will give you long lasting protection from the elements. Most Cap Sheets are 1 square rolls. I'm not promoting any one brand but look for something like GAF's Liberty.



Another alternative is using a standard type of SBS modified that you can apply with modified bitumen adhesive or even an APP torch grade. You can either get a granulated surface or smooth surface and then apply a coating to it.

Take good care where your two roofs meet and as mentioned, you're going to have to flash up onto the pitched area for a few courses to get a good watertight tie-in there, as well as around all the walls. Those are very vulnerable parts of the roof and where most failures occur.

Good luck with your project.
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Old 09-29-2011, 07:51 PM   #4
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How should i reroof this low slope porch- first time doing a low slope roof


Quote:
Originally Posted by Roofmaster417 View Post

My recommendation is to use a peel and stick roof system.It is very Diy friendly.


Make sure you purchase the base sheet that goes with the cap sheet.Follow the manufacture instructions

I would refrain from an adhesive application.With no experience with the adhesive it can get ugly very quick.

I would also refrain from trying to use torch down for obvious fire hazards.

I would definately stick () with the SBS system.Definately a Diy friendly product that is clean and it adheres on its own with a little pressure.

No tar on your face,neck,arms,hands,legs,elbows,ears or in your hair.No mess on the new material,shingles or on your ladder,driveway,windows,gutters,siding,fascia,carp et,door knobs,vehicles,wife,kids or the family pet.

No 911 calls or visits from the fire department for trying the torchdown route.Torchdown is for professionals and NOT the first time Diy'r.

As it was mentioned Liberty is a decent product.I actually prefer Certainteed Flintastic.IMO it is a great product.
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Old 09-30-2011, 08:05 AM   #5
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How should i reroof this low slope porch- first time doing a low slope roof


I have seen roof fires on torch down applications from good pros. The likelihood of a fire from a comparatively inexperienced homeowner is exponentially higher.

Peel and stick is probably your best bet or a fully adhered EPDM/TPO.

Pay special attention to the step/wall flashing details.
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Old 09-30-2011, 08:47 AM   #6
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How should i reroof this low slope porch- first time doing a low slope roof


Okay...you guys bring up some valid points. I do not want to be responsible for dirty dogs or kids, let alone the wife nor a bar-b-qued house. Just giving alternatives.

Although a cleaner install, keep an eye on rolling the product out straight and getting a good seal on the end laps. And, first and foremost, do your flashing details!!
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Old 09-30-2011, 09:12 PM   #7
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How should i reroof this low slope porch- first time doing a low slope roof


Quote:
Originally Posted by Horseygirl View Post
Just giving alternatives.

No intentional brow beating from me so.,.,no worries.,.,Besides I feel your posts are fairly thorough and it is obvious that you are educated with roof systems and applications etc.

The only thoughts I had with your post (Not that it is important anyway) but.,.,.,

When giving information about installations the O.P isn't the only one floating on our threads.

As silly as it sounds other DIY'rs might misinterpret your post as something a first timer might be able to successfully achieve since the O.P stated that it was his first flat installations.

When I first started on DIY I kept forgetting about that.

We know that these homeowners and DIY'rs look to us for knowledgeable advice about their roof problems.,

But.,they also look to us not to give them advice that could potentially cause injury or loss to their property.

IMO I think you have some good things to contribute to the forum.



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Old 10-01-2011, 03:29 AM   #8
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How should i reroof this low slope porch- first time doing a low slope roof


+1

No brow beating here.

You do have some very good advice to offer and it is always spot on.
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Old 10-01-2011, 06:07 AM   #9
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How should i reroof this low slope porch- first time doing a low slope roof


Hi! "markcal02" - Welcome to "DIY"!
"2 cents"
"RM417", "HG", "W on W" - good advice! (As usual!)
Worked for a roofing, siding, gutters, window & door Distributor/Installer -
... Repair-person/Estimator/Supervisor ("Baby-Sitter") ...
Don't think "Torch-Down" is a "DIY" project -
Unless there's someone there helping, with experience.

"OP" - looks like "Asbestos Slate" siding on your house -
pay close attention to your flashing against it.
(A bucket of "Tar" is not really, considered "flashing"!)

rossfingal
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Old 10-01-2011, 07:01 PM   #10
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How should i reroof this low slope porch- first time doing a low slope roof


Roofmaster417, Windows on Wash, Rossfingal,

Thanks for the advice and thanks for the vote of confidence.

Last edited by Horseygirl; 10-01-2011 at 07:09 PM.
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Old 10-02-2011, 08:15 AM   #11
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How should i reroof this low slope porch- first time doing a low slope roof


"HG"
No need to thank us!
Thank you!

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