Is Butyl Tape Required Along With Sealant for Roof Vent Installation
Updated 07/29/2026 | Published 07/26/2026
Products Featured in This Question
Question:
Before I order, if I'm installing a new roof vent do I only need Dicor or should I also buy butyl tape?
asked by: Kevin M
0
Expert Reply:
Hey Kevin! I'd definitely use both. Butyl tape like # DC38SR creates the primary seal between the roof and the vent. Dicor Self-Leveling Lap Sealant # DC94SR provides the weatherproof secondary seal over the screws and flange. This is pretty standard practice for the industry, and what works best to prevent any unwanted leaks.
Which roof vent are you replacing?
expert reply by:
Robin H
0
Dicor Self-Leveling Lap Sealant
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Product Page this Question was Asked From
Dicor 501LSW-1 Self-Leveling Lap Sealant - 10.3oz - White
- RV Roof Repair
- Sealant
- Self-Leveling Sealant
- Fiberglass Roof
- Metal Roof
- PVC Roof
- White
- Dicor
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