Cold-Ply with Ceramic Granules
Cold-Ply Membrane with Ceramic Granules, Toronto
Cold-ply membrane with a ceramic granule cap, photographed across the field.
Photographs From This Job
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About this job
Cold-ply membrane with a ceramic granule cap, photographed across the field. The granules are not decoration. They are the sacrificial layer that takes ultraviolet light so the bitumen underneath does not, and they give the finished roof a walkable texture that stays reasonable when it is wet. Ceramic-coated granules hold their colour considerably better than mineral surfacing that has only been dyed, which matters on a roof that is visible from a neighbouring window or a third storey. Underneath the cap is the base ply, adhered rather than torched, and underneath that the prepared deck. The seam pattern visible in these frames is deliberate: cap laps are offset from base laps so that no seam sits directly over another. That single decision is worth more to the life of a low-slope roof than almost any material upgrade, because water finds seams and a stacked pair of them is a direct route through both plies at once.
Project summary
- System installed
- Cold-applied two-ply with ceramic granule cap
- Scope
- Field membrane and granulated cap sheet
- Property type
- Low-slope roof, Toronto
- Crew notes
- Cap sheet set into adhesive and rolled through
Systems used on this job
What This Job Involved
In the words written against these photographs.
What is happening here
Ceramic-coated granules hold their colour considerably better than mineral surfacing that has only been dyed, which matters on a roof that is visible from a neighbouring window or a third storey.
The detail that decides it
The seam pattern visible in these frames is deliberate: cap laps are offset from base laps so that no seam sits directly over another.
Why we do it this way
That single decision is worth more to the life of a low-slope roof than almost any material upgrade, because water finds seams and a stacked pair of them is a direct route through both plies at once.
Systems and Services on This Job
Where this work sits in what we do, and where to read more about it.
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