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EPDM ROOFING:  MOLDED OUTSIDE CORNERS

Molded Outside Corners are used to seal the outside corner formed when two walls project into a roof. We pre-apply seam tape to the horizontal flanges which extend 5” onto the roof and to the vertical flanges which extend 8” up the walls. Position the corners carefully and work slowly to avoid creating gaps at the intersections of the roof and walls. Note that Molded Outside Corners can only be applied to 90° corners: for other angles see TAPED OUTSIDE CORNERS.

adhere rubber to walls

STEP 1:   Cut a 45° slit at the corner
and adhere both sides to the wall.

 

 

clean rubber

STEP 2:  Clean all surfaces with
toluene, naptha, or white gasoline.

 

 

expose tape

STEP 3:  Peel back the protection paper
to expose the tape at the bottom corner.

 

 

spot corner

STEP 4:  Holding the corner firmly in
place, press to tack the corner to the roof.

 

 

peel left base

STEP 5:  Reach under and pull the
protection paper towards one side.

 

 

peel left wall

STEP 6:  Continue to pull, pressing the
molded corner firmly into the roof corner.

 

 

peel right base

STEP 7:  Reach under the other side and
pull the protection paper towards the side.

 

 

peel right wall

STEP 8:  Continue to pull, pressing the
molded corner firmly into the roof corner.

 

 

 

roll surfaces

STEP 9:  Roll all surfaces firmly,
especially at the roof corners.

 

 

clean corner

STEP 10:  Clean the edges with
toluene, naptha, or white gasoline.

 

 

caulk

STEP 11:  Caulk around the molded
corner with Silicone Caulk for EPDM.

 

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