The Big Caulk (Fix-It Guys #3)
Tori Ross

Third in series but can be read as a standalone!
Rosie's a hard worker. As the attorney with the most billable hours at her law firm, she works hard to be left alone in her middle age. But hard work means she hasn't taken vacations or had any fun in years.
And that includes not having any fun in the love department.
When her roommate's boyfriend refers her to Colt from Big Caulk Bathrooms for the bathroom remodel, she doesn't expect to have more in common with the younger man than she does with men of her own age. She also doesn't anticipate him breaking the monotony on a random Thursday morning...with the help of his crew. But when they both catch feelings, can she let him walk away?
The Big Caulk is a quick-read novella with a happy for now (HFN) ending!