Running along the eaves of your home, fascia boards help to protect the eaves from pests and moisture. However, if they are not sealed properly they will not be able to keep anything out. If you notice gaps appearing between the fascia boards, it's absolutely essential to repair this problem as quickly as possible. Otherwise the structural integrity of your home can be threatened. The process of sealing these gaps is relatively simple and can usually be done by a homeowner. But you have to do this project during clear, dry weather to allow the sealant you use to cure completely. If you don't, the seal might not be watertight.

What You Will Need

  • Ladder

  • Protective Rubber Gloves

  • Wood Patch Putty

  • Putty Knife

  • Fine Sandpaper

  • Dust Mask

  • Exterior Silicone Caulk

  • Caulking Gun

  • Exterior Paint

  • Brush

Step 1. Place a ladder below the fascia that you want to work on. Make absolutely certain that your ladder is positioned on flat, hard ground so it won't tip over with you on it. It also needs to be high enough that you can easily reach the eaves on the house. It's a good idea to have a second person standing at the base of the ladder to provide help if you need it.

Step 2. Put on a pair of protective rubber gloves before you start working with the sealant. Most sealants contain compounds that can cause skin irritation. You want to use thick rubber gloves and not work gloves, since work gloves are often porous.

Step 3. Roll a half dollar size quantity of wood patch between the palms of your hands to make it softer and more malleable. Once you've softened it, roll it out into a long tube of material that is just slightly wider than the gap in your fascia.

Step 4. Push this tube of wood patch material down into a section of the gap in your fascia. Keep working along the gap, adding more tubes of wood patch material in this way until you have completely filled the gap. Use a putty knife to smooth out the material. Allow the patch to completely cure. This usually takes about six hours, but reference your manufacturer's instructions for the exact time.

Step 5. Put on a dust mask. Rub a piece of fine sandpaper along the length of the wood patch to create as smooth a surface as possible.

Step 6. Use a caulking gun to apply a bead of silicone caulk along the gap you filled in with the wood patch. This will help to keep moisture from seeping inside. Use the putty knife to flatten and smooth the caulk. Let the caulk dry for at least one full day. For any questions, contact a professional like Chew Bittel Associates Inc.