1.0 Note: Round canopies have the patch installed on the inside of the canopy. Square canopies
may have the patch applied to either inside or outside. Follow the manufacturer’s instructions.
1.1 Turn the canopy inside out and place on the repair table over the pin board. Smooth the
canopy fabric out. Pin the fabric to the pin board leaving a suitable distance around the damaged
area to work with.
1.2 Mark the damaged area line with the marking pencil [Figure B]. Make sure the marked area
aligns with the weave of the ripstop fabric.
1.3 Using the patching square, mark a parallel line 5/8" outside of the damaged area line
[Figure C]. This will be the patch fold line.
1.4 Again using the patching square, mark a parallel line 3/4" outside of the 5/8" line [Figure D].
1.5 Draw a line from the corners of the 5/8" line to the corners of the 3/4" line [Figure E].
1.6 Take the basting iron and make a basting hole at the ends of the corner lines [Figure F]. These
holes will precisely mark the extent of the corner cuts and prevent unnecessary raveling of
the corners. In addition, if the canopy is made from dark colored material such as black,
when the rigger turns the patch over to do the inside folds, because the pencil marks do not
show through the dark material, the corners will be precisely defined for remarking the lines
on the inside.
1.7 Take the repair material and cut a patch piece approximately 3" larger in both directions than
the dimensions created by the 3/4" line perimeter. Make sure that two of the adjacent edges
are cut square with the weave of the fabric and form a right angle.
1.8 Take the patching square and draw a line 3/4" in and parallel to the two even edges [Figure
G].
1.9 Take one edge of the patch and fold on one line. Lay it on the canopy and align the fold along
the 3/4" line and match up the corners. Pin or baste the patch in place [Figure H].
1.10 Fold the second side of the patch back at the 3/4" line and pin in place [Figure J].
1.11 Take the third side of the patch and fold back at the 3/4" line. Take the patching square and
measure 3/4" back from the fold. Trim the patch material at this line. Fold the patch UNDER
at the 3/4" line and pin in place [Figure K].
1.12 Take the last side of the patch and repeat step 1.11 [Figure L].
1.13 The basic patch should now be pinned in place.
1.14 Using the single needle machine, sew the outside of the patch in place with the seam approximately
1/16" from the edge of the patch [Figure M]. Overstitch a minimum of 1.25".
Carefully release tension on the thread without pulling on the canopy fabric. Doing so will
result in pulled and distorted fabric. Trim the thread.
1.15 Remove the canopy from the machine.
1.16 Carefully trim the damaged fabric, cutting along the damaged area line [Figure N]. Next cut
the diagonal lines connecting the corners [Figure O]. Cut all the way to the basting hole at
the inside corner.
1.17 Fold the fabric along the patch fold line and pin in place [Figure P]. This edge should be
parallel to the outside seam. Sew around the inside of the patch approximately 1/16" from
the edge and again overstitch the ends a minimum of 1.25" [Figure Q].
1.18 Release tension on the threads and trim. Remove the canopy from the machine. Inspect
completed patch.
2.0 INSPECTION:
2.1 The ripstop weave of the patch should align with the weave of the canopy.
2.2 The patch should be square with good sharp corners.
2.3 Stitching should be even and parallel with the outside edge of the patch.
2.4 Inside corners should be square with no raw material showing. Inside row of stitching should
be parallel with the outside row.
2.5 Tension should be even from both inside and outside view.
2.6 Overstitch of the ends should be minimum of 1.25".
