Hi all,
Have just had my slab poured and it is 100mm lower than the specified FFL. Is this a major issue? What are my options now?
Slab low
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Ideally you would want your floor heights to sit at the levels marked on the plans, however there can be valid reasons for a floor level being slightly higher or lower than what is marked as the RL on the plan.
On your site plan there is often a notation that the floor level can vary by 100mm either way so if yours is within that tolerance then it is fine as it has been laid.
Is there any reason that having your slab 100mm lower could be problematic?
On your site plan there is often a notation that the floor level can vary by 100mm either way so if yours is within that tolerance then it is fine as it has been laid.
Is there any reason that having your slab 100mm lower could be problematic?
Ideally you would want your floor heights to sit at the levels marked on the plans, however there can be valid reasons for a floor level being slightly higher or lower than what is marked as the RL on the plan.
On your site plan there is often a notation that the floor level can vary by 100mm either way so if yours is within that tolerance then it is fine as it has been laid.
Is there any reason that having your slab 100mm lower could be problematic?
On your site plan there is often a notation that the floor level can vary by 100mm either way so if yours is within that tolerance then it is fine as it has been laid.
Is there any reason that having your slab 100mm lower could be problematic?
Can’t see anything on drawings regarding a tolerance level.
I’m not sure, I was just thinking FFL has been set for a reason (architect design and/or council?) and now not at that level. Slab is still above NGL but not by much. Water getting into the house was my first thought if thats a potential flow on effect on being lower?
There are pipes that are on same level with our outdoor slab (set down lower than house slab) but if that’s the only issue hopefully they can be lowered
Ask to see your enginnered drainage plan
Ask to see your enginnered drainage plan
I have the civil/drainage plans, what am I looking for?
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