Matthew Steger WIN Elizabethtown

Wood Destroying Insect (WDI) Inspection (aka 'Termite Inspection')

Wood Destroying Insects (also called "WDIs") can wreak havoc on a home's structure with no obvious visible signs. A Wood Destroying Insect (WDI) inspection performed by WIN Home Inspection can be done during your home inspection or as a stand-alone service.  A Wood Destroying Inspection inspection is defined as a non-invasive, visual inspection meaning that wall/floor/ceiling coverings, insulation, furniture, stored items, shelving, etc. are not moved or disturbed.  The inspector searches for visible evidence of past or current Wood Destroying Insect infestation, such as shelter tubes, bore/exit holes, frass, as well as any visibly accessible damage left behind by a Wood Destroying Insect (WDI) infestation.


Have questions about WDI/Termite Inspections? Give us a call at 717.361.9467 for more information or to schedule your appt.

What is a Wood Destroying Insect?

Wood Destroying Insects (WDIs) are specifically defined by the National Pest Management Association (NPMA) as: Termites, Carpenter Ants, Carpenter Bees, and Wood Destroying (Infesting) Beetles.  We provide our findings using state (PA Dept. of Agriculture) and NPMA standards. The completed report (using form NPMA-33) will include recommendations regarding whether treatment is warranted based upon what is visible and accessible during the inspection.  For more information about Wood Destroying Insect (WDI) inspections, please contact us (717-361-9467). We are licensed by the PA Dept. of Agriculture to perform WDI/Termite inspections in the Commonwealth of PA.

Some basic things that home owners can do to help prevent WDI infestation or damage include:

  1. Keep gutters and downspouts clean and make sure that downspouts and sump pump drains discharge at least 4' from homes, decks, and porches.  Wood Destroying Insects are often attracted to water accumulation and/or rotted wood.

  2. Ensure that your perimeter grading is properly pitched to shed water away from the structure.

  3. Ensure that there is no contact between siding (such as vinyl or wood siding) or wood trim materials and grade (includes dirt and mulch).  At least a 4" space should exist between where siding/trim materials end and where grade (dirt or mulch) begins.  The home's foundation material should be readily visible around the home's perimeter.

  4. Keep vegetation (trees, ground cover, and bushes) trimmed well away from the home.  At least 24" is best at siding/trim and at least 5' from roofs.  Also, vegetation should not grow up your home, deck, or a trellis adjacent to your home.  Vegetation provides a direct path between the ground and your home for insects (or rodents/animals) to traverse.

Per the National Pest Management Association and as specifically noted on the NPMA-33 WDI report form (NPMA-33), a Wood Destroying Insect (WD) inspection is "not a structural damage report". This inspection is not a structural integrity inspection to determine whether a WDI infestation has compromised the structure.  If insect damage is found, a qualified structural contractor or a licensed structural engineer should be consulted to determine if structural damage exists and to determine the structural integrity of the building. Home inspectors and Pest/Insect inspectors are not trained, insured, or qualified to determine structural adequacy or the structural integrity of a building.

Learn more about Wood Destroying Insects from this special article: "Wood Destroying Insects".

Fungal rot, wood rot, fungus, and mold/mildew are not wood destroying insects (WDIs). Therefore, the detection of these items is specifically excluded from a Wood Destroying Insect (WDI) inspection per the National Pest Management Association (NPMA) and industry standards.

Matthew Steger, owner/inspector of WIN Home Inspection, is an ASHI Certified Inspector (ACI), a Certified Level 1 Infrared Thermographer, an electrical engineer, a PA DEP licensed radon tester, and a PA Dept. of Ag. licensed pesticide applicator/WDI inspector. He is fully PA Act 114 compliant. He can be reached at: 717-361-9467 or msteger@wini.com. WIN Home Inspection has provided a wide array of home inspection services in the Lancaster, PA area since 2002.