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Enter your roof · the rolls lay themselves out

EPDM calculator: work out your roof yourself

This calculation is for guidance only. It is not a quotation. Exact quantities depend on the roof design, wind load and details: send us your project and we will calculate precisely.

Attachment system
m
m
Roof edge
0,30 m
At least 150 mm above the finished roof.
What the membrane goes on
Pipes
2
Drains
2
Rolls

Your kit

Guidance-only calculation. We will calculate precisely from your project.

Full list and roll layout ↓

Full kit

This calculation is for guidance only and does not replace a specialist’s calculation. Quantities depend on the design, wind load, substrate, number of details and installation. Before you buy, send us the roof plan or project: we will check it and calculate precisely.

Total incl. VAT

Exact calculation from your project

Send a roof plan, drawing or photo with dimensions. A specialist will check the system, wind load and details and send you an exact material list.

info@epdm-shop.lv
+371 27007888

Roll layout

roof stripparapet stripsoffcut

Good to know

How we calculate

  • System: membrane fully adhered to the substrate.
  • Number of rolls from the layout, not from the area.
  • Seams: overlap at least 100 mm, QuickSeam tape 76 mm.
  • Upstand on parapet at least 150 mm, strip = height + 0.25 m.
  • RPF strip at the parapet base, fasteners every ≤ 300 mm.
  • Termination Bar along the top edge, fasteners every ≤ 200 mm.
  • BA-2012 on both surfaces: 2.35 m² per litre.
  • QuickPrime Plus: 4.7 m² per litre, one surface.
  • Lap Sealant HS: 6 m per cartridge.
  • Bonding at +5…+35 °C on a dry substrate.