Howdy - I'm looking for some info/advice on our tar and gravel roof.
I'm not too savvy with roof stuff, so bear with me if I don't describe
things properly or miss out on some info.
We've been in this house about a year, it's about a 27-year old house,
on the Northern California coast (rain and fog, no freezing). The
garage and two rooms of the house are under a tar-and-gravel roof. It
may be the original roof, we don't know.
First thing I noticed was water pooling on the driveway, coming under
the garage door. Looking up, I see that it's coming over the top of
the roof, above the garage - but specifically, it's coming through
about one inch below the edge, where some trim meets the outer walls
of the front of the house.
We had a couple of roofing people look at it - the usual range of
"replace the whole thing" to "too small for me, just patch it
yourself." So I decided to try it myself, based on some suggestions
for how to approach patching the edges.
First thing I notice is that there are some big puddles. I've been up
a few different times and we've always got bigger puddles than our
neighbors, for longer. The roof is not flat or pitched properly for
I've got a bunch of questions - any help with any of them is
* The only thing I've found about fixing some of these lower spots is
http://doityourself.com/roofing/roofstandingwater.htm - basically
putting down increasingly larger concentric circles of roofing
material to raise it up on the low spots. Any thoughts on this
approach? 1 - Does it have to be dry to do put this stuff down? and 2
- the gravel is loose on top but much of it is embedded in the tar -
so how low do I need to "scrape" before putting any new material on?
* what are some methods for removing the water? I tried sweeping some
directly into the gutter downspout, but that takes a LONG time with
very little effect and doesn't work for all the puddles given where
the puddles are and where the downspouts are?
* as far as the "leakage" along the front edge, I was advised to patch
the edge of the roof - I'm not sure how to describe this - but
whatever is joining the roof material to the edge - I can see sort of
a crack where it opened up. I scraped (using a wirebrush) whatever
loose gravel I could get, and took some Plastic Roof Cement (wet or
dry surfaces) and applied it. It seems to be mostly working, but it
also doesn't seem to harden. Is it supposed to, the way caulking does?
It's pretty tough to apply because it sticks to itself more than it'll
stick to a wet roof....
Thanks - a lot of intertwining issues here, appreciate any help!