Frequently Asked Questions About Mack RD Truck Roof Trim

Will this roof trim fit my specific Mack RD model year?

Mack RD roof trim typically fits RD600, RD688, and RD690 models from 1988 to 2004. However, there are variations between early models (1988-1999) and later models (2000-2004) due to slight cab design changes. Always verify your truck's exact model year and compare mounting hole patterns before ordering. If you're unsure, contact us with your VIN number and we can help confirm compatibility.

What's the difference between stainless steel and chrome-plated roof trim options?

Stainless steel roof trim offers superior durability and corrosion resistance, making it ideal for trucks operating in harsh weather conditions or coastal areas. It maintains its appearance with minimal maintenance. Chrome-plated trim provides a mirror-like finish at a lower cost but requires more frequent cleaning and may show pitting over time, especially in areas with road salt exposure. Both options typically come in 304-grade stainless or ABS plastic with chrome plating.

Can I install the roof trim myself, or do I need professional help?

Most experienced truck owners can install roof trim in 2-3 hours with basic tools including a drill, rivet gun, and measuring tape. The trim typically attaches using existing mounting holes or requires drilling new ones following a template. The biggest challenge is ensuring proper alignment across the entire roofline. We recommend having a helper to hold pieces in place while securing them. Professional installation usually costs $150-300 if you prefer expert fitting.

How many pieces come in a complete roof trim kit?

A complete Mack RD roof trim kit typically includes 5-7 pieces: a center section, two or three side sections per side (depending on cab configuration), and sometimes corner transition pieces. Standard cab models usually require fewer pieces than extended cab versions. Each kit should include mounting hardware like rivets or screws. Verify the piece count matches your specific cab style before purchasing.

How do I prevent water leaks after installing roof trim?

Proper sealing is crucial to prevent water intrusion. Apply a bead of high-quality silicone sealant or butyl tape along the back edge of each trim piece before installation. Focus extra attention on joints between sections and around mounting holes. After installation, run a secondary bead of sealant along the top edge where the trim meets the cab roof. Allow 24 hours of dry time before exposing to rain or washing.