SEATTLE - When you spend more than $7,000 for a new roof, you don't expect leaks, mold and water damage from rain after the fact.

But one homeowner who contacted KOMO 4 News' Problem Solvers had those exact problems, and what's even worse is the response she got trying to get the job done right.

Roberta Coston was desperate when she called -- "my roof is still leaking!" she said -- after spending more than $7,000 and getting a 5 year warranty on a new roof from Home Depot.

I took a photographer to Roberta's house and saw the water stains running down the painted beams, and warped paint along parts of the ceiling joints.

"This is all from the rain", Roberta said.

What really has her upset it's the mold and fungus on the ceiling near her fireplace. Roberta says it's water coming from the roof.

She had the new roof put on 3 years ago and got a 5-year warranty.

"I've had three project managers come out," she said.

Roberta says at first, the contractors tried to solve the problem with patches. But that didn't work.

"Each time a person comes out and takes a look, they say, 'Oh well, I know what the problem is,' and it's never taken care of," Coston said.

Roberta told me she made repeated calls and kept the business cards from someone named Chad, a project manager named Jason, and another project manager named Steve Palmer.

Palmer was aware Roberta's case, but told me he was not aware she was still having problems.

Within 10 minutes, Roberta got a call. Someone from Home Depot would be there within 24 hours.

"They said they will be here, someone will come tomorrow," Roberta said after a lengthy conversation with them.

I also got a call. A Home Depot public relations manager called me later the same day. The company provided a spokesperson and some answers for Roberta.

"She's gonna be getting a whole new roof, " said spokesman Steve Johnson. "We're actually scheduled to go to her house and install a complete new roof, I believe on the 26th, the day after Christmas."

I asked Johnson why it took KOMO 4 News getting involved to get some action.

"Unfortunately, there were some communication problems on who to call to get help on that. As soon as you got involved, I guess you found the right number. We were able to get a hold of the project manager and have someone at her house within 24 hours."

Johnson said it was either a problem getting ahold of the right people or they had a problem getting Roberta to the right people.

But I only called the same people Roberta says she had been calling.

Because of the rain on the 26th the work will start on the 27th. Roberta said someone from The Home Depot called on the 26th to say they'd bring the materials out and, weather permitting, try to get the work started.

Roberta is assured that a different contractor will be doing the work this time.

But this raises questions about how home improvement stores select and monitor the contractors they hire to work on your home. Not just The Home Depot, but Sears, Lowes and other companies that hire contractors to install roofing, carpet, siding, cabinetry and other home improvement material

In my next Problem Solvers report, I'll have more on how the contractors are screened, selected and monitored -- information you need to know, before you start your next home improvement project.