A rule of thumb for determining how much chimney you need for proper woodstove performance is…
Uponor Controls and Poly pipe cladding on boiler copper lines
Acrylic is a sheet of material that is heated and vacuum formed over a mold, creating a continous waterproof membrane. It is then reinforced with fiberglass. Gelcoat fiberglass is a polyester resin sprayed onto a mold and then reinforced with fine glass particles. One is a solid surface, the other is porous.
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Chimney systems by code need to be installed once a transition through a combustible (roof or wall) is required. Once the transition to chimney is made the chimney system must be completed through to termination (chimney cap). As well, an insulated chimney serves two purposes; one is to insulate the flue gases from combustibles and second is to keep the flue gases as warm as possible. If an un-insulated pipe is fixed atop a proper chimney the warm gas are prematurely cooled and can result in poor draft and excessive creosote.
