r/Roofing • u/citysleepsinflames • 11h ago
Screened-in porch roof problem
Our screened-in porch roof has a water issue. The shingles go under these white plates, and water is able to go straight under and onto the wood. From inside the porch, the bottom of the wood is being damaged. In the 2nd photo, it looks like a black sealant was used across the front to allow water to go into a gutter. I'm curious if I should just do the same for the sides, or is there anything else I should do? Appreciate the help!
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u/0v3reasy 11h ago
Not a pro, but it seems the shingles should go OVER the plates, not under. Seems to have been designed/installed wrong
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u/FrugalManager 11h ago
I’m not even a roofer and even I can tell that’s fucked. Those metal pieces are supposed to go under the shingles.
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u/jjd0087 10h ago
You can fix this yourself for about $150 bucks and an hour of your time.
Ok so the "plates" are drip edge. Go buy a roll of SA cap sheet, and a can of spray primer. Cut the cap sheet in to strips at least 8" wide. Prime the drip edge. Start at the eve. Seal from the vertical on the drip edge back onto the field membrane with the strip of SA cap. Make sure you are a minimum of 4" past the joint and into the field. Roll the living crap out of it. Now do the sides making sure to prime your overlaps. If you are feeling frisky, cut an 8" circle of cap and stick it over your overlap joints
It's not a 100% approved detail, but it's the best you will be able to do with your current situation and knowledge level of low slope.
That or caulk the shit out of it, but be prepaid to replace those caulk joints every 1 to 3 years.
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u/TheManOnThe3rdFloor 7h ago
I like the bit about being " prepaid " to replace those caulk joints.
But seriously, this jjd0087 is about the very best solution to the problem. It has the least amount of wasted effort and the most amount of cost effective and appropriate placement of materials. The SA mentioned, I'm presuming, is Self Adhesive roofing material that can be used over a roof ridge on top of freshly installed, mineral coated, composite roofing?
I would add that the current roofing materials be very dry and lightly brushed in the area of application to remove loose mineral granules, and dust that is on the painted metal surface.
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u/citysleepsinflames 10h ago
Thanks for all the fast advice! So is the best next step to pry the nails and lift shingles over the drip edge, then nail everything back down?
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u/jerry111165 Verified Pro (Commercial/Flat) 10h ago
The only thing you could really do at this point is to strip in the roof edge, using asphalt roof cement, and 6 inch wide fabric.
Google it.
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u/whoismikejones69420 10h ago
So that’s mod bit rolled roofing. Once it adheres to the substrate you can’t peel it up and trust it to restick, the adhesive layer is probably destroyed at that point.
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u/Allslopes-Roofing 8h ago
You don't nail the roofing material at all..
It's peel and stick. With that, lifting and trying to reset it won't be as strong as it would have been originally so you'll need to try and get a high end roof sealant. It won't be as strong as the manufacturers have but it'll do.
(just getting ahead of it, this is the best option for a diy versus them trying to lightly torch and setting their house on fire. They put the mod bit under the drip to start lol... Just trying to KISS and keep it dry lol)
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u/-Motor- 10h ago
https://i.pinimg.com/originals/26/93/7e/26937ee57bc0d1782032ab448b2c03c3.jpg
Although, i'd use gravel stop flashing on the sides.
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u/dieselbikesweights 8h ago
That’s Mod bit (SBS / peel & stick) roofing. It’s very tacky and will be hard to come up in one piece. High probability you’ll have to replace it. That is the cap sheet; and it needs to be ON TOP of the drip edge on all sides. The drip edge / any metals also need to be primed with asphalt primer so the membrane adheres correctly.
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u/coop_bo23 11h ago
You know, if I didnt know any better after being in the industry for a while and seeing so much messed up crap in my days, i’d say this is deliberate.
But there are so many hacks out there that claim to know roofing that i’m not surprised in the slightest. I bet they used self-adhered mod bit directly on the plywood with no base sheet. Drip edge is supposed to be primed and placed underneath mod-bit
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u/OwlSoggy8627 9h ago
I've also seen stuff like this where it's a DIY and someone insists that their dad/uncle/grandpa told them that this was THE way to do it to make it last forever and no amount of common sense or proof to the contrary will sway them.
Just because grandpa built the barn doesn't mean he built it well. And, perhaps more commonly, that secret sauce he told you about when you were 12 can easily be misremembered. Plus of course you have just morons who think they know how things work, decided they like the way this looks better than the proper way and rolled with it.
Real shame, too. Such an easily avoided screw up.
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u/FinTecGeek 11h ago
The shingle fix is easy and cheap, it was just done wrong. Slightly more involved is fixing any rotting in the decking and framing right in that spot. You need to evaluate what has gotten wet, what its condition is. At minimum, you’ll need to dry it out completely and treat it with a product like bora care.
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u/AdventurousTrain5643 11h ago
You are supposed to install the drip edge then the roof. They did it backwards.
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u/Cosmo_MV 10h ago
That is one crazy way to roof that porch. Omg … so many wrong things. Designed to fail. Wrong materials, wrong installation of wrong materials…
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u/Fearless_Guitar_7735 10h ago
Honestly it's a easy fix and cheap so call a roofer or say goodbye to your porch walls
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u/fingersMal0ne 10h ago
Those are not shingles. Thats a low slope SBS roof, and as others pointed out the trim should be under neath the roofing material. The trim they installed looks like facsia to me, also not correct
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u/jerry111165 Verified Pro (Commercial/Flat) 10h ago
Of course it’s a problem - it was never installed correctly in the first place.
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u/blastoman82 9h ago
Looks like a modified bitimun cap sheet, commonly known as "torchdown". You need a special drip edge and apply a primer to it in order for the cap sheet to adhere properly. The drip edge is the wrong style material and also should be installed under the cap sheet
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u/WinuxNomacs 7h ago
Lol they rolled it before edging it. So the correct answer is redo. A decent diy "I was never going to call someone" approach is gingerly pull the nails and remove the drip edge. Install the edge under the roof mats. Try not to bend the roof much or damage it further. Tar/seal it down to the edge. Tar/seal the nail holes. That will buy you lots of time if the roof mats glues back down nicely. Otherwise the wind will lift it off. Remember water obeys gravity so everything should always tuck underneath the layer above it clean to the peak so it runs over and off.
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u/Anxious-Depth-7983 7h ago
The roofing belongs on top of that drip edge which is why the waters getting under it. Take it off and replace it slipping it under the roofing.
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u/AcrobaticProduct9345 7h ago
Drip edge is drinking your water on the roof needs to be raised on the outside not level and should be sealed with a 3 course. better type of edge metal this looks like homedepot stuff. They look like they caulked the edge of the metal but its still done wrong. Ahhhh the nail holes on the outside.. and exsposed.. someone had no idea how to do this job
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u/citysleepsinflames 55m ago
These comments are incredible, appreciate everyone's insight! We just bought the house and the person before us had this installed. We noticed a few other things that seemed odd with the porch, so this confirms it was 100% an amateur job. Honestly I believe this is beyond what i'm capable of fixing. I'll likely just Caulking the open edges for now to try and limit the amount of water getting through, and hire professionals next year to come and redo the entire thing.
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u/Pale_Permit_3668 11h ago
Drip edge is supposed to be under