Which specific materials incur extra drilling charges for grab bar installation?

✓ Accepted answer

Drilling surcharges are incurred specifically when installing grab bars into marble, porcelain, or granite surfaces.

These materials are exceptionally hard and require specialized diamond-tipped masonry bits and higher-torque drills, which significantly increases labor time and tool wear compared to standard drywall or wooden stud installations. Here is what you need to know:

• Specialized Tools: Standard wood drills often shatter against granite or porcelain. Installers must use expensive diamond-core bits, which can cost $30–$50 each, adding to the total service fee.
• Time and Labor: Drilling into dense stone takes three to five times longer than typical drywall work. Many providers, like Dr. Grab Bar, add a specific "hard-surface surcharge" to their standard package pricing to account for this extended labor time.
• Structural Risks: Drilling in porcelain tile carries a high risk of cracking the surface. Professional installers often use a "wet drill" method or specific backing plates to mitigate this risk, a service that is rarely included in basic pricing.
• Price Expectations: While a standard installation might cost around $150–$250, expect to pay an additional $75–$150 for stone surfaces. Luxury design studios may integrate this into a higher-tier "white-glove" service fee.
• Alternative Solutions: To avoid these charges, ask for adhesive wall anchors rated for bathroom use. These are suitable for smooth porcelain or glass but are generally not recommended for heavy marble slabs without a secure chemical bond.

admin · 2026-10-09 12:46:29