Revised, expanded, updated websites.

1Indoor air quality 21 -- 2 Health effects 40 -- 3 Finding a healthy house 54 -- 4 Site selection 68 -- Part 2 System approach 75 -- 5 Planning 77 -- 6 Ventilation 97 -- 7 Heating and cooling 113 -- 8 Air filtration 137 -- 9 Tight construction 147 -- Part 3 Materials and components 157 -- 10 Concrete and masonry 159 -- 11 Foundations 166 -- 12 Wood and wood products 179 -- 13 Alternative framing materials 192 -- 14 Roofing 202 -- 15 Siding 208 -- 16 Windows and doors 214 -- 17 Insulation 222 -- 18 Flooring 233 -- 19 Walls and ceilings 256 -- 20 Coatings, caulking, adhesives, and strippers 265 -- 21 Kitchens and bathrooms 281 -- 22 Plumbing systems 294 -- 23 Electrical systems 304 -- 24 Central vacuums 323 -- Part 4 Detailed examples 325 -- 25 An in-depth evaluation of six common pollutants 327 -- 26 Three healthy houses 358 -- Part 5 Resource material 369 -- Appendix I Organizations and suppliers 371.