Steven L. Smith of King of the House Home Inspection in Bellingham,WA explains the benefits of installing a proper flashing at a deck, a balcony, a porch or a similar landing. This video is not a treatise on all elements of deck construction or design. All work should be performed by experienced and qualified parties. Work to comply with all applicable local jurisdictional guidelines or codes. Rot, the result of a missing flashing, can lead to structural instability or collapse.