Toilet lower than soil pipe - is that a problem?

My toilet is about 30mm lower than the soil pipe, will it cause a problem? or do I need to raise the toilet height?

3 Answers

Due to the water flushing through it should expel the waste, problem is the lowest point will always have sewerage sitting inside so over time it can build up, cause blockages or worst case back flow into the toilet pan.
28th Oct 2020
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Bpec Plumbing Solutions
6 Reviews, 83% Positive
Lower the soil pipe definitely
29th Oct 2020
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Aura design
1 Reviews, 100% Positive
It is most definitely a problem, it's essentially a negative head height, so yes the loo needs raising
25th Oct 2020
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