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  2. Ductwork airtightness - Wikipedia

    en.wikipedia.org/wiki/Ductwork_airtightness

    A variety of techniques are widely used to tighten duct systems on site, including gaskets, tapes, sealing compound (mastic), internal duct lining, aerosol duct sealing. So-called "duct tapes" are often not suited for sealing ducts, which explains why, in the US, the International Energy Conservation Code (IECC) requires any tape used on duct ...

  3. Sealant - Wikipedia

    en.wikipedia.org/wiki/Sealant

    Sealant is a substance used to block the passage of fluids through openings in materials, [1] a type of mechanical seal. In building construction sealant is sometimes synonymous with caulk (especially if acrylic latex or polyurethane based) [ 2 ] and also serve the purposes of blocking dust, sound and heat transmission.

  4. Joint compound - Wikipedia

    en.wikipedia.org/wiki/Joint_compound

    Joint compound is used to finish gypsum panel joints filled with paper or fiber joint tape, corner bead, trim and fasteners, and to skim coat. It is also convenient for patching holes, bumps, tears, and other minor damage to existing walls. In North America, troweling joint mud on gypsum panels is a standard construction technique prior to ...

  5. Duct (flow) - Wikipedia

    en.wikipedia.org/wiki/Duct_(flow)

    Ducts for air pollution control in a 17000 standard cubic feet per minute regenerative thermal oxidizer (RTO). A round galvanized steel duct connecting to a typical diffuser Fire-resistance rated mechanical shaft with HVAC sheet metal ducting and copper piping, as well as "HOW" (Head-Of-Wall) joint between top of concrete block wall and underside of concrete slab, firestopped with ceramic ...

  6. RTV silicone - Wikipedia

    en.wikipedia.org/wiki/RTV_silicone

    RTV silicones are made from a mixtures of silicone polymers, fillers, and organoreactive silane catalysts. Silicones are formed from a Si–O bond, but can have a wide variety of side chains. [3] The silicone polymers are often made by reacting dimethyl dichlorosilane with water. [4] Linear dimethylpolysiloxane polymer reaction.

  7. Mastic (plant resin) - Wikipedia

    en.wikipedia.org/wiki/Mastic_(plant_resin)

    Mastic (plant resin) Mastic ( Greek: Μαστίχα) is a resin obtained from the mastic tree ( Pistacia lentiscus ). [1] It is also known as tears of Chios, [2] being traditionally produced on the island Chios, and, like other natural resins, is produced in "tears" or droplets. Mastic is excreted by the resin glands of certain trees [3] and ...

  8. Vapor barrier - Wikipedia

    en.wikipedia.org/wiki/Vapor_barrier

    A vapor barrier (or vapour barrier) is any material used for damp proofing, typically a plastic or foil sheet, that resists diffusion of moisture through the wall, floor, ceiling, or roof assemblies of buildings and of packaging to prevent interstitial condensation. Technically, many of these materials are only vapor retarders as they have ...

  9. Pistacia lentiscus - Wikipedia

    en.wikipedia.org/wiki/Pistacia_lentiscus

    Pistacia lentiscus (also lentisk or mastic) is a dioecious evergreen shrub or small tree of the genus Pistacia native to the Mediterranean Basin.It grows up to 4 m (13 ft) tall and is cultivated for its aromatic resin, mainly on the Greek island of Chios, around the Turkish town of Çeşme [2] [3] and northern parts of Iraq.

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