Free for everyone

Free tools from working builders

Built by Dynaspan for shed and patio builders, DIYers, and tradies in WA. Real calculators, no signup required.

Roof rise / run
Calculate roof pitch, ridge height, rafter length, and gable end sheet cuts.
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Concrete slab volume
Work out exact concrete and reo mesh for your slab pour.
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Flashing designer
Design custom flashings with girth and bend angles. Get a quote anytime.
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Need a real quote on a shed or patio?

Talk to the team — proper plans, proper pricing.

Want to buy materials directly?

Cut-to-length sheeting, top hats, flashings, and fixings — shop online soon.