Insulated chimney liners installed in Tildenville

What a UL 1777 listing means for a liner

UL 1777 is the standard chimney lining systems are listed to, and the residential code accepts listed and labeled systems that comply with it. The listing covers a system installed as its instructions describe, with the parts named there, not a length of pipe on its own.

That is why we install the liner, top plate, cap, base fitting and any insulation as one assembly instead of mixing components from different makers. Your paperwork records the product, so a later sweep, inspector or buyer can see exactly what was installed and check it against the same instructions we followed.

Relining questions at a home sale

When a property is sold or transferred, NFPA 211 calls for a more thorough chimney inspection. Liner findings often surface then, sometimes as a single line in a long report that leaves both sides unsure what it means.

We read that line against what we find in the flue and write up only the work the chimney needs. Buyers and sellers each get a plain explanation they can take into their negotiation, with the relining scope separated from any other repair and the reason for each item stated in a sentence.

Putting a stove into a fireplace chimney

A fireplace flue is sized for an open fireplace, usually far larger than a stove outlet. A stove venting into it can run with a cool, oversized flue.

Relining with a liner sized to the stove, connected to the stove collar and carried to the top, brings the flue back to the stove's needs. The stove maker's instructions set the size, and we follow them. We also check the hearth and clearances the stove will need, and list any work there separately.

What a relining estimate should list

Our written relining estimates list each part of the job, so you can compare them fairly with any other proposal. If a line is missing from a quote you received elsewhere, it is worth asking whether that part was left out or simply not written down.

• The liner product, diameter and length
• Insulation, and whether it is required or optional
• Top plate, liner cap and any extension
• The tee, adapter or other base connection
• Cleaning, tile removal and other preparation
• Separate lines for crown or masonry repairs