How do you drill into fiberglass tub deck?

Fiberglass Tub Deck Drilling Instructions

Additional Tools Needed:

• Painters Tape or Masking Tape
• Measuring Tape
• Safety glasses or goggles
• Dust mask or other protective face covering
• Power Drill
• Metal Drill Bit for Guide Hole Drilling 
• Please see your Hole Saw bit’s instructions for the appropriate size
• Hole Saw Drill Bit (example - Hole Saw Bits Kit @ Home Depot)
• Diameter depends upon hole size needed for faucet install
• Please refer to faucet installation instructions for the diameter of the hole saw needed
• Please refer to the hole saw manufacturer instructions to ensure the bit works with fiberglass
• Fine grit sandpaper (optional)

Instructions for Drilling Faucet Holes:

1. Apply masking tape or painters tape over the area(s) to be drilled, be sure tape covers the whole area being drilled and 1 to 1-½” beyond the drilling
2. Measure and mark the location of the hole to be drilled and of the center of the drill hole with a dot, cross, or another mark
3. Put on safety glasses/goggles and a dust mask or other protective face covering, leave them on until all drilling and sanding steps are completed
4. Using the appropriate size metal drill bit and power drill, drill the hole for the guide bit
   1. Please consult the Hole Saw manufacturer’s instructions for the size of the guide bit hole
   2. Lower speeds are recommended for the guide hole drilling
5. Change out the drill bit for the Hole Saw bit and drill hole(s) as prepared. Starting at a lower drill speed for the guide bit then increasing drill speed for the hole saw is recommended.
   1. Be sure to keep the drill and bit straight, perpendicular to the deck surface during the whole drilling process to prevent binding
6. After drilling allow the surface to cool for a moment before removing the tape
7. Inspect drill hole and if desired use fine-grit sandpaper to clean up the inner edges of the drilling(s)
8. Remove any dust or shavings remaining on the tub surface by wiping gently with a clean, damp cloth or paper towel
9. Remove safety glasses/goggles and protective face covering and clean up any tools and debris remaining

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