Frequently Asked Questions
Expert advice for your chimney and venting needs
How do I determine the correct liner size for my chimney?
The correct liner size is typically determined by the exhaust outlet of your heating appliance. For wood-burning stoves, this is usually 6 inches, while masonry fireplaces require a calculation based on the hearth opening dimensions.
What is the difference between 304L and 316L stainless steel liners?
304L grade stainless steel is designed for venting wood-burning appliances. 316L is a higher-grade alloy that is required for venting coal, oil, or corn, as it offers superior resistance to corrosion from those fuel types.
Do your chimney liner kits come with a warranty?
Yes, our Rock-Vent stainless steel flexible chimney liners carry a Lifetime Transferable Warranty, ensuring long-term protection and value for your home.
How long does shipping take for custom chimney components?
Most in-stock items ship within 24 hours. Custom-fabricated components typically require 2-4 business days for production before being dispatched via standard ground shipping.
Can I install these chimney products myself?
While our products are designed for ease of installation, we recommend consulting with a certified chimney sweep or professional contractor to ensure compliance with local building codes and safety standards.
What is your return policy for unused items?
We accept returns on most new, unused items within 30 days of delivery. Please note that custom-made lengths or specialized fabrications are generally non-returnable.