Material atelier · Harrison, New York
Low Slope Roof Membrane Planning
Compare membrane, drainage, edges, and access.
Treat the five items below as one connected decision: membrane system and attachment, deck and insulation substrate, positive drainage and low areas, edge, curb, and penetration details, and maintenance and service-walk access. A change in one can alter the assembly, sequence, or responsible party. Stay on the ground or in a safely accessible interior area. Roof access, destructive inspection, and installation belong with qualified people using proper protection.
Planning factors
Five decisions worth documenting
Use the headings as a proposal check. The actions beneath them are specific to this project decision.
Membrane system and attachment
Identify the membrane type, reinforcement, seam method, attachment, and compatible accessories. Similar-looking sheets can belong to different tested systems and installation procedures.
Deck and insulation substrate
Record the deck, insulation, cover board, and existing moisture findings. An overlay should not hide an unresolved wet layer or unsupported substrate assumption.
Positive drainage and low areas
Ask how water reaches drains or scuppers and whether tapered insulation or crickets are part of the design. Persistent low areas need an explanation, not just a thicker sheet.
Edge, curb, and penetration details
Curbs, parapets, equipment, edges, and penetrations interrupt the membrane. Have the proposal name compatible flashing and termination details for each condition.
Maintenance and service-walk access
Plan how people reach equipment without damaging the membrane. Service paths, protective pads, inspection access, and later trade work belong in the maintenance discussion.
Prepare the property
Keep these details on one sheet
- Membrane system and attachment
- Deck and insulation substrate
- Positive drainage and low areas
- Edge, curb, and penetration details
- Maintenance and service-walk access
Before authorizing work
What record belongs with “membrane system and attachment” before work begins?
Request a dated description and the evidence supporting the proposed treatment. Cross-check entries: deck and insulation substrate; positive drainage and low areas. Named responsibility: edge, curb, and penetration details. Closeout file: maintenance and service-walk access. Identity check for Low Slope Roof Membrane Planning: confirm the business, applicable County license, roofing insurance, and current Harrison permit steps separately.