Can I use 4586 test results?

Yes. Both 4586 & 3661 use the same pendulum method of testing the slipperiness of the floor, so any tile tested using the pendulum method under 4586 can be translated into the 3661 standard. 4586 has two alternative tests using the ramp method of assessing the slip rating – these tests give a “R” rating (R9, R10 etc). The ramp method of testing is not recognized under 3661 or the NZ Building Code.