Dry rot repair becomes necessary when load baring beams are compromised by dry rot. Dry rot occurs in moist wood. Dry rot can be confused for damage from carpenter ants or termites. However, fungal spores cause dry rot. Fungal spores require moist wood in order to grow. As the fungus sends out seeds, it creates pores and holes in the wood. Moist wood usually occurs from a problem in the plumbing or roofing.
If the source of moist wood is not corrected, dry rot may continue to spread. This causes weakening of the structure and can lead to a high cost of dry rot repair. Have a general contractor inspect your home to determine the source of the moisture and the extent of the damage. The source of moisture must be fixed before repairing any wood. This is usually accomplished by fixing the roofing or plumbing.
A general contractor should help determine which wooden beams are supporting loads and which are not. Beams supporting loads are a safety hazard and should be replaced by professionals. Wood that is not supporting a load can be repaired by the homeowner. Spongy wood should be removed, either by cutting or digging it out. Wood hardener is then applied to the area. This is usually purchased in the form of a liquid epoxy. This fills in the pores and cracks and solidifies the wood. Wood filler may then be applied. There are several brands of wood fillers. Be sure to check the labels to see which are designated for indoor or outdoor use. Other putties may be used, but they do not expand and contract with the wood, making them sub-optimal wood filler.