Some houses are built over a crawl space. If you don’t do things just right in these situations, the air in your house might just remind you of your teenager’s dirty socks. For years, builders have ...

Q: I would appreciate your opinion on whether I should hire a company to line the crawl space of my house. It's about 2,400 square feet, and I suspect the work would be pretty pricey. Is it worth it?

DEAR TIM: The crawl space under my 1910 home is just exposed dirt and leftover building materials. I need to add a vapor barrier and wonder about the best one. The foundation consists of granite slabs ...

Q: The slate floor over my crawl space is ice cold because there is no insulation. How do I fix the problem? A: A traditional crawl space consists of soil or sand — essentially what was the ground ...

Question: I am having a house built partially on a slab and on a crawl space. Is it necessary to install a vapor barrier under the concrete, and is this something I can do myself to save some money?

Q:Thanks for your explanation on insulating a crawl space (Insulating, bracing crawl space a smart idea, Oct. 13). I have a rental house in San Carlos that gets mold on the walls near the floor in the ...