On Thu, 31 Jan 2008 02:37:18 -0800 (PST), sm_jamieson wrote:

On 30 Jan, 23:20, EricP wrote:
On Wed, 30 Jan 2008 20:38:56 GMT, "KinRsole"
wrote:

My garage roof is made from that fibre board/cement board stuff (sorry I
don't know the correct term but you know what I mean)

A couple of the panels have now cracked.

Is there a way to repair these.

I did think of filling the crack with some sort of silicon or sealer both
from the outside and inside.What type of sealer should I use?

I would use car body filler. To stop the crack you drill a largish
hole right at the end of the crack. That knackers it as it can't find
it's way any further.

Drill end end of the crack to stop it spreading definitely. I would
then paint the area with liquid rubber ensuring that it goes well into
the crack. Of course this does not produce an attractive looking
roof !
Simon.

My parents' garage spent a number of years with a crack that had been
patched with car body underseal - the really thick stuff almost like tar.
Lasted easily until they were ready to re-roof it.

SteveW