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Posted by DanG on November 2, 2005, 7:30 pm
It is an unusual house. Shingles generally require a minimum of 3
in 12 pitch. Hot tar can be purchased as steep asphalt and can be
applied to a maximum of 3 in 12. There is a special steep which
can go to 6 in 12.
Leaving the existing tar roof leaves the weight on the roof. You
will be adding 235 lbs per square or more. If the framing can
take it, go for it. If the roof leaks now, it serves little
function.
The major problem you will have is removing the gravel well enough
to get a smooth or semi smooth surface to begin the shingle work.
There will probably be quite a bed of stone buried in the asphalt.
One tool that can help is a power roof spudder, a gas engine
spinning chains at the roof to break out the gravel. They work
much better when the roof is cold. Here is an example:
http://www.constructioncomplete.com/RoofingEquipment/RoofSpuddingMachines/RoofSpuddingMachines.html
(top posted for your convenience)
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Keep the whole world singing . . . .
DanG (remove the sevens)
dgriff237@7cox.net
>I need to re-roof our house it currently has a Tar & Gravel roof
>on it.
> The pitch is good for shingles.
> Do I have to remove all the T&G roof prior to putting on the
> shingles
> or can I remove all the loose gravel and then apply the new
> shingles?
> I'm doing this myself and just thought it would protect the roof
> while
> I slowly get it all shingled.
>
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>on it.
> The pitch is good for shingles.
> Do I have to remove all the T&G roof prior to putting on the
> shingles
> or can I remove all the loose gravel and then apply the new
> shingles?
> I'm doing this myself and just thought it would protect the roof
> while
> I slowly get it all shingled.
>