I would measure down from the soffit about every 6 feet. You need
to pull a lot of tension to keep the say out of a line 27' long,
plan on several snaps.

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______________________________
Keep the whole world singing . . . .
DanG (remove the sevens)




"ben" wrote in message
...
I'm cutting off the bottom 20" of my t1-11 panel siding to
replace it
and want to cut it off straight. The bottom edges of the siding
are
rotten, so I can't just measure up from those 20" as a guide.
So I
bought a chalkline but I now realize, I don't know how I can
make sure
it's level. The length will be about 27'.

How can I level this? Or is there a better way to do this?

thx!