Tropic Top is a .020" thin aluminum sheet 14" wide by 3' long 
with a baked on beige color finish.  The sheets are pulled apart 
and nailed along the solid edge starting at the bottom edge 
of the roof with the fingers overhanging.  It is applied as 
ordinary shingles overlapping just enough so the underlayment 
does not show between the fingers.  

The thatch can be given an old look by speckling with a 50/50 
mixture of acrylic paint and water.  Various shades of brown and 
gray look good.  

When you come to a corner or valley you need to cut the sheets 
into 4" widths in order to give it a natural fanning transition 
as in illustrations C & D. ( See Below )
 
In a cone shaped roof the sheets are cut into smaller and smaller 
pieces the further up you go  in order to maintain that natural 
fan like look.

At the ridge the sheets are cut into 6" widths and starting at 
the ends overlap the ridge and meet in the middle with an overlap.

Depending on the  roof configuration estimating  the exact amount 
of thatch can be difficult.  I will buy back any material you 
do not use.

Please contact me if I can be of further assistance.