We waited until Summer to have our hardwood floors refinished so that they would dry faster. Little did we know that the (water-based) varnish used by the company had a strong odor that lasted for 2 weeks.
When we first returned to the house, we opened the doors and windows to air out the place. However, when we went to bed, the windows and doors had to be closed for safety reasons. Even with top-rated air cleaners the odor was strong.
My son was showing symptoms of behavior changes. We set up a system where he stayed in his room with the door closed and the air conditioner on. When we had to go somewhere or he had to use the bathroom, he would put on a mask and minimize his time out of the room. We spent 2 weeks avoiding our home as much as possible until the odor dissipated and he could tolerate the area without behavior change.
ResearchMama Insight: Varnishes and paints have VOC (volatile organic compound) ratings. Before you have the floors refinished next time, try to find a varnish with the lowest VOC rating. Specialty stores may have the best selection, but ensure that the VOC rating is written on the container or on the company website.
Also, to avoid having the color recoated and the heavy sanding, try maintaining the floor every few years with a maintenance (water-based) clear coat especially in the rooms with heavy traffic.
Here is a chart depicting several different floor finishes:
| Brand | Type | VOC Rating |
| Varathane | Oil-Based | 450 g/l |
| Varathane Odor Free | Water-based | No VOC stated (<50g/l) |
| Miniwax | Water-based | 275 g/l |
| Duraseal | Oil-based | 550 g/l |
| Duraseal | Water-based | 275 |
Please note that due to the high VOC, many cities have forbidden oil-based paints and varnishes.
