Low-slope roof survey

Flat roofs section by section: slope, system in place, test cuts, drains, upstands, rolls and boards.

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Feet and inches or metric: your choice. One switch on the sheet converts every measurement.

Low-slope roof survey: a filled-in survey in MesuPro — A survey made with this template, in the app.

What you measure

The template's tables and their columns, as the app shows them. Calculated columns fill in as you type.

Roof sections

Section
Length
Width
Area from a plan
Area calculated
Slope
Existing systemChoices: Modified bitumen (SBS) Built-up, asphalt and gravel EPDM TPO PVC Other
Existing layers
Test cuts calculated
Drains
Penetrations (vents, stacks, curbs)
Notes

Parapets, walls and curbs

ItemChoices: Parapet Wall upstand Curb Roof edge Expansion joint Other
Run length
Upstand height
Upstand run calculated
Notes

Materials

MaterialChoices: Cap membrane Base membrane Vapour retarder Insulation board Cover board
Product
Area covered
Layers
Coverage per unit
Waste
Rolls to buy calculated
Boards to buy calculated
Notes

About this template

Survey a flat or low-slope roof for its replacement or resurfacing: roof sections with their area, slope, existing system, test cuts, drains and penetrations, the parapets, walls and curbs to flash, and the membrane rolls and insulation boards per product.

Guide and sources

Add each roof section (bassin) bounded by its walls, parapets or expansion joints, with its length and width or the area from the plan, its slope and the system in place. The sheet counts the test cuts AMCQ asks for before a resurfacing: at least 2 per section and 1 per 2,500 sq ft. Count the drains and the penetrations.

In Parapets, walls and curbs, add each run with the height of the upstand: the National Building Code takes the membrane at least 150 mm (6 in) up a wall. In Materials, add a row per product (cap and base membrane, insulation, cover board) with the area it covers copied from the sections' total, the coverage of one roll or board from the data sheet after the laps, and your waste: the sheet counts the rolls and the boards per product, each rounded up once.

Below 1:12 (8%), AMCQ resurfaces with a two-ply membrane. The code's minimum slope is 1 in 50 (2%) for modified bitumen; a flatter roof drains through drains at its lowest points.

Sources

IKO, Torchflex TP-250-Cap Manufacturer dataTorchflex TP-250-Cap, product data sheet, IKO Industries, stock 7620XXX, June 2026. Checked Oct 14, 2026
NBC 2020, 9.26.3.1 and 9.26.4.6 CodeNational Building Code of Canada 2020, Table 9.26.3.1 Roofing types and slope limits, and 9.26.4.6 and 9.26.4.7, National Research Council Canada, 2020, Volume 2, pages 9-173 and 9-174 (Quebec: Code de construction, chapitre I, in force 2025-04-17). Checked Oct 14, 2026
SOPREMA, Sopralene Flam 180 Manufacturer dataSOPRALENE FLAM 180, technical data sheet, SOPREMA, WPBFR229/b. Checked Oct 14, 2026
Johns Manville, ENRGY 3 polyiso Manufacturer dataFlat and Tapered ENRGY 3 polyiso roof insulation (Canada), data sheet, Johns Manville, RS-5565, rev. 12-23. Checked Oct 14, 2026
AMCQ, roof replacement guide Trade associationTechnical Bulletin 4, Roof replacement guide, Association des maîtres couvreurs du Québec (AMCQ), rev. May 2023. Checked Oct 14, 2026