Insulated chimney liners installed in Milk District

Raising the liner top when height is short

Some systems offer a top extension that attaches to the top plate, so the liner cap sits higher. Height matters because the residential code wants the chimney 3 feet or more above its roof penetration, and 2 feet taller than any part of the house standing within 10 feet.

We check that relationship on the roof and tell you whether an extension belongs in the answer. If the chimney itself is too short for the rule, the estimate says so plainly rather than hiding it behind a liner.

What we show you at the end

Before we leave, we show you the top of the new system, the cleaning access at the base and the connection at the appliance. We explain the first fires, what to watch for and when the next inspection is due.

Any separate issue we noticed during the job is written down, not mentioned in passing on the driveway. You should finish the day knowing what was installed, what it cost, what it did not include and who to call if something seems wrong.

How the installation day runs

Relining day follows a set order, and we tell you the plan the day before, including when the fireplace and the roof will be in use and roughly how long each stage takes for your chimney.

• The flue and smoke chamber are cleaned
• The route is proven with a test piece or guide cone
• Insulation, where required, goes on the liner
• The liner is lowered from the top
• The base connection is made and checked
• The top plate and liner cap are fitted and fastened

What the insulation wrap is made of

The insulation wrap one maker specifies is a half-inch, foil-faced ceramic fiber blanket of a set density, secured with a stainless mesh sleeve. Substituting another material can take the installation outside its listing.

We use the insulation the liner's instructions name, and we record it on your paperwork. Poured or other insulation types exist for some systems, and when one is proposed, the estimate names it and the listing it belongs to.