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Roofing
Roof Flashing Q's & A's

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Flashing for prefab chimney on metal roof

I would like to run my metalbestos chimney up though the the metal roof of my camp.How would I seal around the flashing so it will not leak?

You can try getting one of the metal flashing units for the roof and coat the under side with roofing tar. Extend the insulated triple wall pipe up far enough that you can tar the flashing to the insulated pipe.

Porch roof flashing

My family owns an old building with a porch with a wood shingled roof. Not long ago a hole broke in the roof as the spot under the part of the main roof where large Icicles formed during the winter.

So I went up with a prybar to get an idea what would be needed for repairing the hole. And I discovered that a good portion of the roof and shingles were rotten to the point where they fell apart under scruteny. I am now contemplating a very large hole in the roof and would appreciate any aid you have to offer.

Well... it looks like you need a new roof. And not just the shigles, but likely the boards or plywood under the shingles. I can't say for sure of course not being able to see, but there is probably alot of rotten wood up there that will need to be torn off and replaced.

Don't walk up there, or be VERY careful if you do, until you know what is rotten and what is still ok.

Make sure the flashing where the roof meets the house is in good shape too and replace that as necessary.


Chimney Cap Problems

We have an older wood and batten home and in our dining room we have a cathedral ceiling with ceiling fan and a stone fireplace. Problem is that the stones get damp at the top near the ceiling during the summer months if when we don't use the ceiling fan and create a musty smell. Also the ceiling, textured has gotten stained from this. The roof is shingled and I have sealed the chimney stones outside and also placed roof tar 4" wide around the base of the chimney. This has been going on for a few years and driving me crazy. I cannot seem to fix it. I did find out that the chimney cap was of concrete and was done creating a cradle causing water to drain towards the center but had it fixed by a mason. What can I do? Fan and a stone fireplace. Problem is that the stones get damp at the top near the ceiling during the summer months if when we don't use the ceiling fan and create a musty smell. Also the ceiling, textured has gotten stained from this. The roof is shingled and I have sealed the chimney stones outside and also placed roof tar 4" wide around the base of the chimney. This has been going on for a few years and driving me crazy. I cannot seem to fix it. I did find out that the chimney cap was of concrete and was done creating a cradle causing water to drain towards the center but had it fixed by a mason. What can I do?


Have someone check under those shingles as well as put some metal flashing not just tar around that chimney. Water is still leaking from near your chimney which can be either because of no flashing or there are some roofing spots that need fixing. Get someone in to have a look. This is really the only way to solve this problem is to get to the source.





Bathroom vent roof jack

I'm in the process of retrofitting bathroom ventilator fans. The job is straightforward, except for the roof jacks(exhaust vents). My question is this... is it possible to install the jacks without having to remove any shingles? It seems as though to me that I ought to be able to pull up the trailing edge of a shingle and slide the flashing up under the edge and slip the vent inlet through the the hole in the roof..? Just want to know what I'm getting into. I'm not too crazy about heights either....

Yes, use some roofing tar under it and around the edges, But you should be able to slide it under the existing shingles above the hole and on top of the ones below.


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Drip edge

Is it necessary to install drip edge on a complete reroof?

Typically YES, because the drip edge covers the aluminum fascia and prevents water from seeping down behind the fascia and maybe into your house.

Not necessarily if you extend you shingles or roof edge out far enough with wooden shimming shingles and your fascias are just wooden anyhow.

Also depends on your location...Desert? Snow country.... Best to install them in most cases.




Click here for our Ice Dams Article
Click here for our Roofing Tips Article
Click here for our Guide To Buying A New Roof Article
Click here for our Solving Your Drainage And Runoff Problems Article




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