Two companies involved in building the Iqaluit RCMP's new $18-million detachment building, which is now sinking into the ground, are speaking out.

The land the detachment is built on is wet and swampy, and that is a big part of why the structure is now having problems.

Mounties are dealing with cracks in the walls and some washrooms that are not working. There has also been some separation between some floors and walls.

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The company that built the new Iqaluit RCMP detachment says it warned the federal government about the risks of building on the swampy land. (Daniel MacIsaac/CBC)

The company that built the detachment, Almiq Contracting, says it advised the federal government of problems with the foundation and the drainage on the wet ground before construction started.

"We asked the question when we weren't sure and they confirmed, 'Go ahead, it's OK,'" said Pascal Nadeau, who speaks for the company.

Arctic Foundations of Canada, which installed the technology used to keep the permafrost frozen, says there was more water in the area than it expected.

"That puts extra stress on the system. [It] creates more heat load than the system was designed for," said Bill Watt, the company's vice-president and one of its founders.

Watt said the gravel pad that was supposed to act as a barrier wasn't suitable for the swampy conditions, so the spring melt seeped into the permafrost, causing the building to shift.

Some repairs have been made to the building, but the RCMP and the federal government are still looking for other solutions.