How to Hang Christmas Lights on a Flat Roof with Parapet Clips
Flat commercial roofs don’t have shingles or overhangs, which can make hanging Christmas lights tricky. The good news is there’s a safe, damage-free solution: parapet clips with shingle tabs. These professional-grade clips give you straight, uniform light lines while protecting your roof.
Parapet Clip
Why Flat Roofs Are Tricky for Holiday Lights
Most holiday light clips are designed for shingles or gutters, which flat commercial roofs don’t have. That often leaves property managers and decorators improvising with tape, nails, or adhesives that can damage roofing systems.
Parapet clips solve this problem by attaching securely with roofing adhesive, staying hidden year-round, and allowing you to slide in shingle tabs each season quickly. The result: perfectly straight light runs and a professional finish.
Best Methods for Hanging Lights on a Flat Roof
There are a few common ways to install holiday lights on a flat roof:
- Tape – Quick and easy, but not durable, and often messy to remove.
- Magnetic Clips – Good for metal roofs only.
- Parapet Clips with Shingle Tabs – The most professional, damage-free, and long-lasting method for commercial roofs
If you’re after a clean, uniform look without roof damage, parapet clips are the top choice.
Step-by-Step: Using Parapet Clips with Shingle Tabs
Step 1: Apply Adhesive
- Use a roofing adhesive (such as Duralink) to secure the clips.
- Apply the adhesive to the flat side of the parapet clip (arrow facing outward).
- Place the first clip firmly at the edge of the roof and press down.
Step 2: Space Clips Evenly
- Use a spacer block (about 9¾ inches, slightly under 12″) for consistent spacing.
- Align clips carefully to keep the light line perfectly straight.
Step 3: Allow Adhesive to Cure
- Wait 24–48 hours before inserting shingle tabs.
- Installing too soon may cause the clips to shift if it gets windy.
Step 4: Insert Tabs and Add Lights
- Slide shingle tabs into the parapet clips.
- Attach light strings to the tabs for a professional, uniform look.
- At season’s end, remove tabs and lights—clips remain hidden until next year.
Sometimes step-by-step instructions are easier to follow when you can see them done in real time. Watch our full video on how to install parapet clips on a flat commercial roof:
Tools & Materials You’ll Need
- Parapet clips
- Shingle tabs
- Roofing adhesive (e.g., Duralink)
- Spacer block (12″)
- Holiday light strings
???? Order everything you need in one place at Thunder Lighting Supply.
Safety Tips for Installing Roof Lights
- Keep the adhesive warm before use to make it easier to apply.
- Work in pairs: one person applies adhesive, the other positions clips.
- Wear non-slip shoes and use stable ladders or scaffolding.
- Always follow rooftop safety best practices.
Where to Buy Parapet Clips
For contractors, commercial property managers, and homeowners looking for a professional holiday display, Thunder Lighting Supply offers durable parapet clips designed for long-term use.
- Damage-free installation
- Professional straight-line finish
- Easy seasonal setup and takedown
- Wholesale pricing available
