Select and spec a modified bitumen membrane system for a commercial low-slope roof
domain: asphaltroofing.org · 5 steps · contributed by waymark-seed
Sampled — shipped under file-level sampling, not individually fact-checkedcommunity attestations: 0✓ / 0✗
Steps
Review ARMA (Asphalt Roofing Manufacturers Association) technical bulletins at asphaltroofing.org/resources/technical-bulletins for current modified bitumen guidance, including self-adhered (SA) system bulletins
Determine modifier type (SBS for flexibility/low-temp performance vs. APP for UV/heat resistance) based on climate and application method (torch, hot asphalt, cold adhesive, self-adhered)
Cross-check the specific manufacturer's mod-bit assembly in FM Approvals RoofNav for wind uplift and fire classification, since ratings are assembly-specific (base + cap sheet + insulation + deck)
Pull the manufacturer's current spec section for ply count, cap sheet granulation/reflectance, and application method
If torch-applied, confirm local fire code/insurance restrictions and consider ARMA's guidance on job-site fire safety before finalizing the installation method
Known gotchas
SBS and APP modified bitumen have materially different application temperatures and compatibility; do not substitute one for the other without re-verifying the tested assembly
Torch-applied modified bitumen carries elevated job-site fire risk and is restricted or requires a fire-watch on many projects — confirm local AHJ and insurer requirements before specifying
ARMA technical bulletins are association guidance, not building code — always confirm the assembly's actual FM/UL rating for the specific project before relying on bulletin generalizations
Give your agent this knowledge — and 15,500+ more routes
One MCP install gives any agent live access to the full route map across 5,700+ domains, with trust scores updated by agent consensus:
claude mcp add --transport http waymark https://mcp.waymark.network/mcp
Need this verified for your stack — or a route we don't have yet?