Hole in asphalt shingle roof

[pinetree10]

Looking for ideas on how to repair some minor damage to a garage roof -

A branch fell from a very tall pine tree and put a 2-3" hole through the asphalt shingle, through the membrane underneath it, and through the sheet of OSB underneath it all. It stopped short of going all the way into the garage and just sort of stuck there straight up like an arrow. The OSB splintered inside so the damage is visible inside, although only if I point it out to someone who isn't looking for it. I was able to push the bulging pieces back in place but obviously I have to fix the damage. If only it had struck above a supporting member, but no such luck. It was almost midway between the two. I put a piece of aluminum flashing under the shingle as a temporary measure.

If I remember correctly, the membrane used by the builder was some sort of plastic material and not traditional tar paper when the garage was built two years ago. Anyone out there have an idea of how I can repair this properly without tearing half the roof off? Any suggestions are appreciated.

 

[boomer1025]

I'd glue the flashing and the damaged shingle down with some Black Jack cement and wait till the weather gets warmer then replace the shingle and patch the OSBon the inside.

 

[dave1949]

Maybe the membrane was something like Grace Ice & Water Shield. If so, I think you could put a small patch of that over the hole area and not see much bump under the shingles. The builder might be able to give you a piece off of a roll.

Other than that, ask a roofer?

 

[Duwop]

I am a roofer, the suggestions made sound good. Another idea would be to get a flat bar and work up the shingle so that you could slide a small piece of metal under to cover the hole, the slide a piece of felt paper over the metal, then work plenty of black jack between the shingle and felt and imbed shingle solidly into roof cement. If the shingle has a hole and you are concerned about it, work the entire shingle out and install new shingle but cut about 1 inch off the top of shingle to make it easier to slip up under the course or row above.. This repair can be accomplished without blackjack roof cement if you replace the entire shingle and use the piece of metal and felt paper and shingle cut as described.

 

[pinetree10]

I already slid flashing under the damaged shingle. I was planning on removing the damaged shingle once the snow melts and we're back into warmer temperatures because I can't leave it up there with a hole in it. I have a bundle of shingles left over from the roof. I intend to use the piece of flashing to cover the hole permanently but I wasn't sure how to manage the hole in the membrane. I'll follow your advice with the felt paper over the flashing.

Is there a difference between the types of roofing cement you get at the big box stores like Lowes and Home Depot and what professional roofers use? You mentioned Black Jack and I see that's available at Lowes so I'll pick up a tube. Thanks for the suggestions.

The ironic part of this is I hired a tree company to cut this huge pine tree down because it was leaning toward my new garage and the branch snapped and fell while they were taking other branches off. They offered to replace the shingle in the spring but I think I'll do it instead. They're tree guys, not roofers. So much for preventing damage but I guess I'll take a fallen branch over a fallen tree.

 

[Duwop]

If I remember correctly the big box products carry two kinds of cement don't get the neoprene cement you need the asphalt cement. Sometimes it's easier to replace the shingles when it's colder outside because they pop loose easier than when warm as they have asphalt strips on them to prevent lifting in winds, and when it's warmer they can stick and and tear instead of coming loose.

 

[john_bud]

I'd warm the tube o goo in HOT water and use it quick. I can only imagine how hard it would be to push that stuff cold. It also won't flow, fill or stick well cold.

 

[EddieWalker]

First I would remove the damaged OSB. Take off how ever many shingles you need to in order to cut out all the bad OSB. Then I would sister on some pieces of lumber to the sides of your rafters, or run them between your rafters, depending on the size and shape of the new piece of OSB you have to install. You have to have something solid to nail to.

Then I would lift up the edges of the shingles around the hole enough to slide some 30 pound felt paper under them. Mostly concerned about the top and side shingles. Cut the paper to fit. Then I would run a very thick bead of roofing sealant along the edge of where the new tar paper is going and apply the paper.

Read the labels and be sure to only get something designated for roofs. Blackjack is a good brand, I think Henry makes better stuff, but that's more for flashing then gluing tar paper down. Whatever you use, don't be cheap and only use a little. Where I see failure is when very little is used.

Once the paper is down, install the new shingles from the bottom up. For the top row, be sure to cut the shingle to fit and use more sealant.

Some of your nails will have to go through the top of the shingles, so be sure to cover them up with sealant too.

Eddie

 

[DFB]

Sounds like it was a synthetic underlayment such as Rhino or Tigerpaw which I've used before (nice stuff) used but not an adhesive backed ice and water shield.

I would definitely want to reseal the membrane with a piece of ice and water shield though.

then flash, shingle etc...

Glue and screw a small piece of osb to reinforce the break on the inside if you like.

I don't really see the need of making a major project out it unless the insurance is paying.

I wonder if it would have broke through if it was plywood sheating? :confused3:

 

[leveled]

Some of the newer shingles are a pain to fix since they are so sticky (Certainteed or OC) I use GAF. I would remove the nails on the row above and the damaged one and slide out the shingle. Then patch with ice sheild then aluminum if its only a 2 or 3" hole. You could always use wood bondo on the inside, this would be harder than the OSB. When replacing the shingle re-nail and put a dime sized portion of TAR in 4 spots on each disturbed shingle.