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Detailed Application

B300 - Trim Application

Application Instructions

The B300 is an up-stand trim, fitted to contain and direct the flow of water to a gutter, its extra depth is well-suited to use on a warm roof. A single batten is fixed level with the top edge of the deck. Apply 30mm beads of trim adhesive to the batten at 300mm centres, rub the trim into place and nail through the top of the trim into the decking. Do not nail through the front of the trim. Where the trims are over-lapped, they should be bonded together with a thin strip of Trim Adhesive on the inside of the overlapping trim. If a ladder is likely to be leant against a B type trim for access to the roof, the trim will need to be reinforced to avoid deformation. The trim can either be doubled up by slotting a section of extra trim within the section where the ladder will be used or it can be reinforced by being coated with a layer of GRP laminate and then tissue to maintain a smooth finish. Alternately, a wooden batten can be shaped and fitted into the ridge of the trim to ensure that it remains rigid.

Trim Details

B300: Largest raised edge trim for use on warm roofs.



  a, mm b, mm c, mm
B300 100 170 15

B300 typical application




C100/C100MT - Trim Application

Application Instructions

The C trim is a simulated lead flashing, generally fitted in conjunction with the D trim. The C trim is usually fitted into a bed joint of the brickwork or a 35mm deep chase cut out with an angle grinder fitted with a mortar chase disc. Apply polyurethane adhesive to the back of the C trim every 300mm. Fit the trim into the slot and press firmly back to the wall to overlap the D trim. Apply a clear silicone sealant along the length of the trim into the slot to seal the trim in. A smooth finish can be obtained by wiping the sealant with a moistened finger.

Trim Details

C100: Standard simulated lead flashing with 100mm vertical face and 35mm wall penetration. Do not topcoat.

C100MT: As C100 with self securing moisture trap.


C100-1 C100MT-2
C100 C100MT
  a, mm b, mm
C100 35 100
C100MT 35 100

C100/C100MT typical application



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