Before beginning any critical structural repair, consult with a structural engineer to determine if SculpWood Max Putty is suitable for your project.
EndRot Borate Powder is an EPA registered insecticide and fungicide for the control of wood-destroying insects and rot.
RotFix is an ultra-low viscosity epoxy that penetrates deeply into wood substrates. Unlike many popular “penetrating” epoxies, RotFix contains no solvents. It acts as a chemical bonding primer for SculpWood Max Putty. The combination of RotFix Penetrating Epoxy and SculpWood Max Putty creates a permanent repair that will not shrink or crack.
SculpWood Max Putty is a reinforced, high-compressive strength, two-part epoxy putty compound. It has 4x the compressive strength of standard SculpWood Putty. SculpWood Max Putty is non-shrinking and forms a permanent bond to properly prepared wood substrates. SculpWood Max Putty is ideal for repairing vertical load-bearing wood components such as posts or columns. Additionally, it can be used in non-critical applications. Some wood components such as horizontal support beams with minor, non-structural damage can be fortified with SculpWood Max Putty.
SculpWood Max Putty is machinable when fully cured and is compatible with most water/oil-based primers and paints.
1. For repairs that do not involve rot, skip to step 5.
2. Excavate the punky wood down to clean, sound wood. Remove any loose debris from the surface.
3. Mix EndRot Borate Powder and water at 1.5 Tbsp powder to 1 oz of water. This solution will coat approximately 1 ft².
4. Brush the solution over the affected area. Allow at least one hour to dry. If the substrate is not completely dry after one hour, you can use a hairdryer or heat gun to force dry.
5. Using disposable safety gloves, mix RotFix Epoxy by volume at two parts Resin (Part A) with one part Hardener (Part B) and thoroughly mix. Assemble only what you can easily use within 5-10 minutes. Mixing up too much material can reduce the pot life and waste material.
6. Apply RotFix penetrating epoxy to the repair area. Note: You will get the best results applying SculpWood Max Putty to freshly applied, wet RotFix.
7. Mix SculpWood Max Putty using disposable gloves, combine equal parts of SculpWood Max Putty Resin (Part A) with Hardener (Part B). Knead the components together until the mixture is uniform in color.
8. Pack the SculpWood Max Putty into the cavity, avoiding gaps and air pockets. Slightly overfill the cavity with SculpWood Max Putty. More extensive repairs may require a form* to prevent slumping of the putty.
9. SculpWood Max Putty can be sanded in 5-8 hours (at 70°F (21°C)). Colder temperatures will extend the cure time, while warmer temperatures will reduce the cure time. Use a random orbital sander or belt sander to machine the putty to the substrate level. 80-100 grit paper is necessary to effectively remove excess SculpWood Max Putty .
10. After sanding SculpWood Max Putty, clean the surface of sanding dust and apply either an oil or water-based primer/paint system.
*Forms Flat, smooth plywood works well as a form material to prevent slumping. Apply Tyvek house wrap tape or clear packing tape over the plywood to create a non-stick surface. The form material can be clamped or temporarily screwed in place. Rounded posts or columns can utilize thick painter’s plastic and duct tape to contain SculpWood Max Putty.