Assessed First
Mold Removal & Remediation in Derry, NH
Containment, HEPA filtration, and antimicrobial treatment remove mold colonies at the source and stop cross-contamination through the rest of the home. Mold remediation removes affected porous materials and corrects the moisture source that allowed growth. The work is done under containment with HEPA filtration so spores are not carried into unaffected rooms, and the area is cleared only once the underlying moisture problem has been resolved.
Remediation is the step after the assessment, not before it. A local pro establishes how far the growth extends and what is feeding it, because removing what is visible while the moisture source is still running puts the same colony back in the same wall. Texas and several other states also set a square-footage point above which the work has to be done by a licensed remediator — the service note below covers where that line falls in this city.
Every pro in our network is licensed and insured in New Hampshire.
Frequently asked questions
October rain and then a freeze. Which one actually opens the foundation?
The pair. October puts the water in. Frost pries the joint around it. A dry freeze is much less destructive than a wet one, which is why an October peak is a worse local month than a heavier summer cell would be. The rain is the load. The freeze is the wedge.
The mill pond is picturesque. Is it also the water table?
For the blocks along Beaver Brook, yes. The ponds were built to hold water, and they still do. A cellar on that corridor can wet from below in a dry week because the pond, not the last storm, is setting the table. Picturesque is not drained.
A 1982 house on a drumlin. Did they build above the problem?
Above the pond. Not above freeze-thaw. Drumlin till still takes October rain and still locks, and the downhill side of that lot sheds melt onto the wall in April. You have left the mill hydrology and kept New Hampshire's winter. That is a different wet wall, not a dry one.