Why is my Basement Cellar Flooding?

Why is my cellar flooding - Q 1

If the space is suffering water ingress, does that ingress continue constantly and at a constant rate, or is it in association with rainfall?

Significance:

If the ingress is constant, it can indicate that the water is lost from pressurised services such as water mains (speak to a drainage specialist or the utilities provider). If it occurs in association with rainfall, then it is related to rainfall (more on this below).

Why is my cellar flooding - Q 2

Does the water have an oily sheen floating upon it?

Significance:

Water with an oily sheen and in some cases, a black colouration, usually indicates escape of water from drains handling foul content. Either source a drains survey is the affected drains are likely private, or contact the utility provider if they are public.

Why is my cellar flooding - Q 4

If the issue occurs in association with rainfall, are the surface water drains defective?

Significance:

It could be related to escape of water from surface water drains, i.e. those that remove water collected by roof's etc., it may be prudent to have the drains surveyed and repaired if necessary (we have advised this in the past when taking phone enquiries and people have called us back advising success). You could potentially introduce drain dye available from builders merchants and see if any shows within the cellar. Note that issues with drains can still arise in association with issues of groundwater pressure, and so fixing.

If you are experiencing problems get in touch with a Structural Waterproofing Contractor who will investigate the problem.