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Step 1
Drill holes in the wood sections that are rotted, and allow the wood to dry. This should be done in places where you are sure the interior of the wood is still intact. Cover the holes with plastic if the wood is still wet, and allow the wood to dry for a week or more.
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Step 2
Fill a baster with a clear penetrating epoxy sealer and inject the resin into each hole that you drilled. Fill the holes to overflowing. Let the resin dry for at least 3 weeks. Provide a covering if the weather is wet.
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Step 3
Pack any remaining holes with a thick resin and sawdust mixture.
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Step 4
Smooth the surface with sandpaper, and apply a finish coat of stain, paint or whatever you choose.
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Step 5
Use a reciprocating saw to cut away any badly damaged or rotted wood, and scoop away any rotted pieces that remain. Allow the exposed area to dry. If you wish to hurry the drying process along, use a hair drier or a kerosene heater.
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Step 6
Apply a clear penetrating epoxy sealer to the exposed section of wood and the areas around it. Use a disposable brush to apply the epoxy.
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Step 7
Fill the area cut away with your reciprocating saw with pieces of wood coated with a clear penetrating epoxy sealer, then fill in any remaining gaps with resin mixed with sawdust.
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Step 8
Add resin to the surface of the log and the wood used to fill the cut-away section, and allow the resin to cure for 1 to 2 days.
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Step 9
Clean and smooth the surface with sandpaper, then apply another brushed coat of clear penetrating epoxy sealer. Finish the wood with stain or whatever you wish to use.
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Step 10
Replace missing sections of wood, especially the moldings around windows, using resin to recreate the original shape or the molding. Be certain to clear away any rot or damaged wood before completing this step. Smooth the surface with sandpaper after the resin cures, and finish in any manner you choose with paint or whatever matches the remainder of the house.
