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Made in NZ · For NZ buildersRafter framing to NZS 3604
Find the right rafter span table for the grade, roof weight and wind zone — then price the roof framing in a quote.
No credit card · Cancel anytime · Works offline on site · Flat NZD pricing
Roof framing take-off, in line with NZS 3604
Rafter spans in New Zealand come off NZS 3604: the timber size and grade, the spacing, the roof load (light vs heavy roof) and the wind zone all change how far a rafter can go before it needs a bigger member. Reading it off the tables for every pitch and span is slow.
Toolie’s span finder lets you pick the rafter grade (SG6, SG8 or SG10), a light or heavy roof and the wind zone, and points you to the NZS 3604 rafter table to read (NZS 3604:2011 is free to view). Separately, a roof quote takes off the roof framing and prices it off a real NZ pricebook. The finder does not take the wind zone from the address, and it does not feed the quote. Confirm the final member sizes against the standard.
- Points you to the right NZS 3604 rafter table for the grade, roof weight and wind zone
- Rafter grade SG6, SG8 or SG10
- Light or heavy roof, and wind zone chosen by you
- Roof framing take-off available in a quote, separate from the finder
- Priced off a real NZ pricebook with regional rates
It’s part of the quote, not a separate tool
In Toolie this isn’t a one-off calculator — it feeds the actual priced quote and the build programme. Describe the job or drop in a PDF plan and Toolie runs the take-off, applies NZ site intelligence and prices it off a real NZ pricebook.
More on-site calculators
See all 17 builder calculators, the full feature guide, or how Toolie quotes a job.
Need the roof area too?
The free roof area calculator turns the house size and pitch into the true roof area, ridge, hips or barges and spouting — and the Roof Designer solves L-shapes, valleys and traced outlines plane by plane.
Common questions
How far can a rafter span under NZS 3604?
It depends on the timber size and grade, the spacing, the roof load (light or heavy) and the wind zone. Toolie's span finder points you to the right NZS 3604 rafter table for the grade, roof weight and wind zone you choose — read the span figures off the standard (free to view) or confirm them with your designer.
Does it include purlins?
The span finder covers rafters only, not purlins. A roof quote takes off rafters, the ridge and the rest of the roof framing (confirm member sizes against the standard).
Does it price the roof?
Yes - Toolie prices the roof framing and the rest of the job off a real NZ pricebook with regional rates.
Quote, comply and get paid — in one place
Start free today. Built around NZS 3604, H1, Healthy Homes & CCA 2002. One flat price for your whole crew.
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