- Joined
- Jul 2, 2007
- Messages
- 5,294
We looked at a house this weekend. It was perfect size for us, loved everything about including private backyard butting up to treeline with lake and field behind it, six burner gas range oven in a gourmet designed kitchen w/ island, tray ceiling and more, double sided fireplace, wood flooring in good shape throughout. But..... Seems there's always a but.
Noticed the crawl space door open and a common consumer grade electric fan just inside the door running as if to vent the space of air. Well that was because apparently it was discovered that there was a water leak in one of the bathrooms that'd gone unknown long enough to "cause some black mold" in the crawl space. And as there were no vents in the foundation walls whatsoever for the crawl space, my suspicions were soon confirmed that this newer house was built with a conditioned crawl space tied to the central heat/air hvac and there are in fact zero foundation vents. I saw no ultraviolet light treatment system on the return plenum which often a conditioned crawl space like this one that draws some return air out of the crawl space and intermixes it with home interior air, will have an ultra violet light system installed on the return plenum in a serviceable area usually near where the return plenum feeds into blower air box. An ultra violet light system supposedly can neutralize mold spores present in the hvac air stream but I think they're only marginally effective, not sure.
From the look of the household electric fan being used at the crawl space entry I'd have to take a stab and say it might be a DIY remediation, or at best maybe they just discovered it and wanted to do something, anything, before bringing in a professional contractor to estimate a repair strategy and cost. DEFINITELY an inspection item and likely any home inspector is going to fail it and require professional remediation, especially in light of the fact that the crawl space air where the mold is present, is comingled with home interior air.
Anyhow, someone came in behind us and offered above asking price for the place, so go figure. Hope they can successfully negotiate the mold remediation in their purchase contract.
Noticed the crawl space door open and a common consumer grade electric fan just inside the door running as if to vent the space of air. Well that was because apparently it was discovered that there was a water leak in one of the bathrooms that'd gone unknown long enough to "cause some black mold" in the crawl space. And as there were no vents in the foundation walls whatsoever for the crawl space, my suspicions were soon confirmed that this newer house was built with a conditioned crawl space tied to the central heat/air hvac and there are in fact zero foundation vents. I saw no ultraviolet light treatment system on the return plenum which often a conditioned crawl space like this one that draws some return air out of the crawl space and intermixes it with home interior air, will have an ultra violet light system installed on the return plenum in a serviceable area usually near where the return plenum feeds into blower air box. An ultra violet light system supposedly can neutralize mold spores present in the hvac air stream but I think they're only marginally effective, not sure.
From the look of the household electric fan being used at the crawl space entry I'd have to take a stab and say it might be a DIY remediation, or at best maybe they just discovered it and wanted to do something, anything, before bringing in a professional contractor to estimate a repair strategy and cost. DEFINITELY an inspection item and likely any home inspector is going to fail it and require professional remediation, especially in light of the fact that the crawl space air where the mold is present, is comingled with home interior air.
Anyhow, someone came in behind us and offered above asking price for the place, so go figure. Hope they can successfully negotiate the mold remediation in their purchase contract.