Tile Roof Installation Around Chimney

Written by sal marco
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Tile Roof Installation Around Chimney
Insulation around chimneys saves money on heating and cooling costs. (abstract red metal tiled roof background and chimney image by Avesun from Fotolia.com)

Roof insulation is important in terms of energy efficiency, which in turn lowers heating and cooling costs. Insulating around a chimney is in both the exterior and interior space. The exterior consists of sealing air leakage, while the interior consists of creating a barrier between a hot flue pipe or chimney and adding insulation.

Skill level:

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Things you need

  • Caulking gun
  • High-temperature resistant caulk
  • Tape measure
  • Aluminium flashing
  • Metal shears
  • Vice grips
  • Heavy-duty stapler
  • Furnace cement
  • Unfaced insulation

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  1. 1

    Load a caulking gun with high-temperature resistant caulk and run a bead of caulk into gaps around the exterior chimney where the chimney meets the roof to seal air leaks.

  2. 2

    Build a damn around the existing flue pipe or chimney with aluminium flashing. Measure the size of the chimney or flue pipe and cut aluminium flashing 6 to 8 inches larger than the flue pipe or chimney with metal shears to create a sleeve. Check all local codes to determine the exact size of the insulation damn. Generally, codes require a 1- to 2-inch damn around metal flue pipes and 3 to 4 inches around a masonry chimney. Building a damn prevents insulation from coming in direct contact with a hot flue pipe or chimney.

  3. 3

    Cut the aluminium flashing at the bottom and top of the every 2 inches all around, and each cut will measure 3 inches deep in order to create tabs on the aluminium sleeve.

  4. 4

    Grasp each cut on the bottom with vice grips and pull up to form a 90-degree angle.

  5. 5

    Grasp the tabs on the top and fold them in to create a 90-angle.

  6. 6

    Place the sleeve around the chimney or flue pipe and staple the tabs into the attic floor with a heavy-duty stapler. The top-folded tabs will keep the sleeve sitting back from the flue pipe or chimney the appropriate distance.

  7. 7

    Seal the seam on the sleeve with furnace cement.

  8. 8

    Place insulation without a paper backing, known as unfaced insulation, around the damn.

Tips and warnings

  • Check all local codes prior to building a damn.
  • Obtain all necessary permits and schedule all inspections to ensure safety.

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