I think that your best bet is to go after items that take the longest to off-gas, such as formaldehyde in pressed wood products.
- The EPA is seeking to reduce the formaldehyde in wood products and will be adopting the standards set by the California Air Resources Board (CARB) in 2013.
- So if you purchase products that meet the CARB rule, you'll be doing better than EPA standards and you can do even better by purchasing "formaldehyde-free" products such as those made by Columbia Forest Products.
You can also offset your IAQ investment with saving in other areas.
- Cabinetry can be a significant cost center and a simple shaker door, which fits many styles, will cost you by far less than one with mitered corners and inserts.
- Although not a building material, an important aspect of IAQ is ventilation and I would urge you to look into Heat Recovery Ventilation (HRV) which will improve air quality while saving you money on your energy bill.
For more information:
Read our backgrounder "Improving Your Home's Indoor Air Quality: From Basic to Bigger and Better Steps."