Incorrect roof slope
#1
08-24-20, 10:35 AM
Join Date: Aug 2020
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Incorrect roof slope
Hi all,
I'll try to explain as much as I can.
In my main entrance, I think I have an incorrect roof slope. As you can see in the picture, when it rains, the water instead of follow the slope of the roof towards the gutter, it goes off and drips on the porch, that's causing the tiles (attached with sand underneath) are becoming loose, the sand is draining together with the water.
Can you suggest something I could do in this case to avoid the water going off the roof?
This can be a silly question, but, can gutters be installed in slopped roofs like this one?
Thanks all for your suggestions.
Aldo
I'll try to explain as much as I can.
In my main entrance, I think I have an incorrect roof slope. As you can see in the picture, when it rains, the water instead of follow the slope of the roof towards the gutter, it goes off and drips on the porch, that's causing the tiles (attached with sand underneath) are becoming loose, the sand is draining together with the water.
Can you suggest something I could do in this case to avoid the water going off the roof?
This can be a silly question, but, can gutters be installed in slopped roofs like this one?
Thanks all for your suggestions.
Aldo
Last edited by Aldo_Morales; 08-24-20 at 11:12 AM. Reason: more attachments
#2
08-24-20, 10:49 AM
Member
Can you post a picture of the front where it is dripping?
Have you gotten up there with a level to verify?
Have you gotten up there with a level to verify?
#3
08-24-20, 10:54 AM
Group Moderator
Nothing wrong with the roof in the picture. Your picture needs to show the whole front of the house for us to understand why its dripping so much off the front of that roof. There must be more to the story.
#5
08-24-20, 11:35 AM
Group Moderator
Well that explains it. What a stupid design. It looks like the gable is a "prow style" gable, where the soffit near the peak is wider at the top than the soffit at the bottom. They create more fascia runoff than a straight, standard gable. You also have a valley that dumps even more water on this area, compounding the problem. And you have a gutter that may or may not have an endcap on it... but it certainly doesnt catch any water coming down the valley. As long as it's got an endcap and is not plugged and overflowing, it isnt part of the problem.
There is no real good solution to this problem because it is a design problem inherent to prow roofs. The only solution I would suggest (which would likely need to be done when the house is reroofed) is to install a different style of drip edge on that entire gable end. Here is a link to one such style.
https://www.homedepot.com/p/Amerimax...0120/100042805
It is typically used on roofs with gravel ballast, but in your case you would use it to try to help direct water down the roof rather than letting it go over the edge.
Or you could install a j-channel, or have custom drip edge flashing made that is even taller. Because the heavier the rain, the more likely it will still wash over the flashing. But when you reroof, you would also want to install 3 ft of ice and water shield directly on the roof deck (under the shingles) all along that gable edge to help prevent leaks. Because you will basically be creating a long valley of sorts right at the roof edge, and the amount of water running down it will be cumulative. The short piece of gutter on the end (in your first photo) should get raised up so that it is almost level. Currently it is too low and has too much pitch.
There is no real good solution to this problem because it is a design problem inherent to prow roofs. The only solution I would suggest (which would likely need to be done when the house is reroofed) is to install a different style of drip edge on that entire gable end. Here is a link to one such style.
https://www.homedepot.com/p/Amerimax...0120/100042805
It is typically used on roofs with gravel ballast, but in your case you would use it to try to help direct water down the roof rather than letting it go over the edge.
Or you could install a j-channel, or have custom drip edge flashing made that is even taller. Because the heavier the rain, the more likely it will still wash over the flashing. But when you reroof, you would also want to install 3 ft of ice and water shield directly on the roof deck (under the shingles) all along that gable edge to help prevent leaks. Because you will basically be creating a long valley of sorts right at the roof edge, and the amount of water running down it will be cumulative. The short piece of gutter on the end (in your first photo) should get raised up so that it is almost level. Currently it is too low and has too much pitch.
