LEAKING windows are delaying fitting out work at a 13 million Welsh office block being built by Taylor Woodrow.
And the problem is threatening to delay the planned summer handover of the building in Cardiff Bay to NCM Credit Insurance.
A team of top technicians from Taylor Woodrow and glazing installer Solaglas Architectural Systems have been drafted in to the site to examine the exact problem with the Schuco cladding.
A Solaglas spokesman said: There are problems, but it is not necessarily the windows.
We are carrying out checks at the site where a custom-made system was designed and installed in conjunction with Schuco.
The leaks are believed to be concentrated in the main facade. More than 60 per cent of the building is made up of glass frontage.
Quantity surveyors estimate the special triple glazing cost more than 250 a sq m.
Taylor Woodrow bosses are confident the problem will be ironed out in plenty of time for the summer handover to the Dutch financial services firm.
But NCM is believed to have made contingency plans to temporarily hire a building in central Cardiff if the occupation date for its new headquarters is put back.
A Taylor Woodrow spokesman said: There are some windows that are leaking.
We feel this is being caused by the driving rain and exceptionally high winds in the area recently.
We are talking a minute problem here. It is something we consider as snagging and we will rectify the problem on that basis.
The client is due to go in around summer time, and this will all be sorted out long before that.
The six month glazing and cladding contract was completed in January.
Architect Holder Mathias Alcock designed the building with a large proportion of glazing to take advantage of panoramic views of Cardiff Bay and the Severn Estuary.