Re-Shingle low slope roof
This short article covers re-shingle a low sloped roof, along with a couple of stuff you should avoid when shingling this type of roof. Although, remarkably, there is just one leak within the old roof.
This time around it had been the roof within the bathroom addition. Whenever there is lots of rain, water would start dripping in with the bathroom fan within the ceiling. The fan venting via a roof vent, then one around there somewhere was leaking. Previous attempts have been designed to seal it with roofing cement, however it still leaked. I figured I would have discovered the leaking just right my last visit, and ended up in a bit of flashing to direct water from it, however that did not help any.
The finishes from the sheathing boards were uncovered, plus they all looked questio
nable, certainly, a number of them were warped. Between might the leak that were there for a long time, we were not confident that the sheathing was still being good.
With roughly a 2:12 slope about this roof, it does not take a ripple around the roof to turn back slope and cause water to circulate into the shingles. Here is a place that looked questionable, although that place wasn’t really leaking.
Draining the roof
To began re-shingle tearing the shingles off round the vent. I had been curious to determine just how much could be wet or rotten around there. However the wood underneath was at remarkably very good condition.
I believe it’s just over the vent appeared as if they were given wet frequently, however they were not rotten. They most likely dried relatively rapidly in the sun warming the roof.
The insulation underneath the vent was quite wet. You may also begin to see the vent, because it was. This is an expanding plastic hose (just like a dryer vent hose), linked to a bit of tubes, which wasn’t really attached to the vent. Therefore the bathroom fan, typically, just venting in to the space underneath the rafters.
Here’s another silly factor about how exactly the roof ended. Flashing was utilized for connecting using the house, however the flashing was placed on prior to the shingles, therefore it was underneath the shingles, this is not on surface of them. Any water that will allow it to be lower towards the flashing would get deflected in to the roof, underneath the shingles! However the flashing have been engrossed in enough roof cement it still stored the water out.
Here is a funny one. The roof is 14′ (4.2 meters) wide, however the drip edge arrived 10′ (3 meter) segments. So two segments were installed, overlapping by 6′. The issue with this was by using the slope as low because it was, the bending-up drip edge designed for a good enough ridge the re-shingle sloped back just a little, developing a trough for water to amass in.
And lifting the old shingles, it had been wet underneath, also it appeared as if it had been wet a great deal.
Instead of take away the drip edge, I cut the bending up part served by a hack saw. A drip edge may be beneficial, but doubling it on a low-sloped roof, less.
Getting rid of from the old shingles is definitely a chore when focusing on re-shingle, but this time around, this wasn’t my job 🙂
Fixing the sheathing
The roof fully removed.
The shingles had only been nailed up with 1″ (25 mm) lengthy nails, which made the old shingles simple to accomplish. It’s most likely not recommended to make use of nails that short, though that did not really cause any problems. The majority of the nails came straight by helping cover their the shingles when i pried them off.
It’s were built with a couple of gaps and discontinuities inside them. For instance, right underneath the chimney is definitely an area which was full of 5/8″ (16 mm) OSB. It was thinner compared to boards, therefore it designed for one step up at this place. Bad idea!
I changed that segment, and added strips of wood in to the bigger gaps, however i forgot to take pictures of this part.
Quietly facing the neighbours, the fascia board and supporting short 2×4’s was beginning to hold lower a great deal, and so i held it towards the sheathing, therefore we put some screws with the sheathing to carry it in position. I pre-drilled every screw hole, simply to make certain I wasn’t likely to crack the endured wood. The screws also assisted to carry it’s lower flat, which designed for a softer surface. A number of that actually work was simpler with four hands than two, so I received my sister to assist.
The finishes from the boards looked type of awful, however it was just the finishes, that got this way, from weather exposure. And So I cut all of the boards to become flush with one another after which nailed a strip of cedar plank towards the finishes from the boards, both to safeguard them from weather and also to hide the ugliness. I beveled the underside edge of this strip by 20 levels to ensure that any water that may run lower it might drip from the outdoors edge, from the fascia board.
I did not wish to reuse that brittle old plastic hose, and that i wasn’t quite sure how you can connect the fan to a different vent. I had been also concered about design for roof vent that were used because, well, this is where the old roof leaked. And So I used some 3″ ABS pipe as well as an elbow to hook up with the toilet vent. This way, I possibly could play one of individuals flanges that should operate a vent pipe via a roof.
Here’s another roofing “don’t”: Letting three year old kids seriously the roof to assist.
Re-Shinglethe roof
Marlene’s husband Olivier sweeping from the roof before beginning to use tar paper. The old roof did not have tar paper onto it.
Tar paper is sort of a second type of defense when the shingles should leak, though, reasonably, I am not too sure it can make a difference. We’d enough remaining in the porch siding project to pay for the roof, therefore it would be a no-brainer for doing things.
Olivier beginning the very first regular row of shingles. They are put on a row of shingles that are nailed up with the tabs facing in the roof, to ensure that any water that flows between your tabs from the last row continues to be directed from the roof.
Up to 50 % done. within the back corner may be the flange for that drain vent, before me the vent for that bathroom fan.
To set up the flange, one shingles to around the amount of the pipe, then nails the flange on, after which continues by putting the shingles within the flange. This way, water flows in the shingles to the flange and ongoing to circulate lower-slope, it flows back around the shingles.
I must say, getting a low roof slope sure causes it to be much more comfortable to set up the shingles. But apart from that, a greater roof slope is way better for that shingles.
Approaching completion, note the shingles installed within the vent flange.
We left the old flashing in position. No harm inside it being there, even though it wasn’t much use underneath the shingles. I did not wish to tear up that tarred up area surrounding the roof edge.
During the last row of shingles, we simply curved them facing the tarred area around the roof. These still need get tar put on these to seal the very best edge.
It had been a little more difficult curling up round the chimney.
This is not really that critical. The further lower the roof, the more serious leaks become. But a leak close to the top are only able to leak water that fell at or over the leak, therefore the potential leakage is a lot more compact. With this particular being towards the top of the roof, but still underneath the eaves from the primary roof, it might try taking some driving rain splattering from the walls to obtain any tremendous amount of water in it. But a little of tar applied to the peak edge should seal that up.
I left that actually work for Olivier to complete. We’d some hefty rainfalls before she got around into it, but there have been no indications of water entering the home.
And here’s the brand new “periscope” bathroom vent. We targeted the outlet for the house. We figured there will not be any driving rain originating from that direction.
I designed a screen from hardware cloth and set that in to the finish from the pipe to avoid wildlife from engaging in it.
I additionally added a screen towards the existing plumbing vent without anyone’s knowledge, although that’s a smaller amount critical. If your bird falls in it, or perhaps a squirrel throws a pinecone in it, there’s a high probability it’ll obvious out with the sewer eventually. Although, I remember when i saw a vent like this jammed filled with pinecones. In some way, a squirrel made the decision it was a great spot to stash them. I suppose that very same squirrel had not really determined a retrieval strategy!
Thinking about the way it ended formerly and despite all that, it just leaked in one location, this roof must do.