CONSTRUCTION TYPE: DUCTS AND TANKS For the thermal insulation of ductwork and water storage tanks ROCKWOOL Ductwrap and Ductslab provide thermal insulation for air conditioning, warm air and extract ducts used in the internal and external environment generally within plant rooms and boiler houses.

construction type DUCTS & TANKS Ductwrap and Ductslab ROCKWOOL Ductwrap and Ductslab are used for the thermal insulation of cold water storage, feed and expansion tanks. 2 CONSTRUCTION TYPE: DUCTS AND TANKS The products are recommended for ductwork for service temperatures of up to 230°C. Dimensions Ductwrap rolls - 1000 mm wide Thickness of roll (mm) Acoustically absorbent Non-combustible Water repellent Chemically inert rOCKWOOL Ductslabinstall used for the thermal Easy to handle and is also insulation of cold water storage, feed and expansion tanks. Standards and approvals The products Ductslab...

Ductwrap and Ductslab Service Temperature and Limiting Surface Temperature ROCKWOOL Ductwrap and Ductslab can be used for service temperatures of up to 230°C. The limiting outer foil face temperature is 80°C to maintain facing bond strength. ROCKWOOL Ductwrap Calculation of length The calculation to determine the length of Ductwrap required to insulate the pipe or duct is made using the formula shown below: Acoustics It is sometimes desirable to improve the acoustic insulation on ducts, especially those in which gases, fluids or particle solids are transported at high velocities. The use of Ductwrap...

construction type DUCTS & TANKS Ductwrap and Ductslab Applications Indicative thickness of insulation for ductwork carrying warm air to control heat loss (taken from BS5422:2009 Table 13) The required thickness of Ductwrap and Ductslab insulation will depend on such factors as duct air temperatures, ambient air temperatures and the designed heat losses. Table 13 - Ductwrap Maximum Heat Loss (W/m2) The following tables are for general guidance only. Thickness of ROCKWOOL insulation for warm air ducts (taken from BS 5422:2009 Table 12) External surface emissivity Minimum thickness of ROCKWOOL Ductwrap...

Ductwrap and Ductslab Typical specification clauses for ductwork The following specifications are for guidance purposes only and should be read in conjunction with recommendations given in BS 5970. 1) Horizontal ducts – concealed from view To be insulated with ROCKWOOL Ductwrap/ Ductslab, nominal density 45 kg/m3, having a factory applied reinforced aluminium foil facing. Joints to be securely taped with 75 mm minimum wide soft aluminium self adhesive tape. The insulation on the underside of the ducting to be additionally secured by suitable insulation hangers at 300 mm centres. The whole to...

construction type DUCTS & TANKS Ductwrap and Ductslab c) luminium sheeting protection: A Apply flat (embossed) or profiled aluminium cladding directly to insulating material. 0.56 mm thick on pipework 0.71 mm thick on ductwork Fixed and installed in accordance with BS5970. d) ild steel sheet: M Mild steel sheet continuously hot dipped with aluminium-zinc coating to BS EN 10326 and BS EN 10327, applied directly to insulating material. Fixed and installed in accordance with BS5970. e) Self adhesive weather resistant zero perm multi-layer laminate: Apply multi-layer laminate directly over ducts...

Ductwrap and Ductslab Sustainability As an environmentally conscious company, ROCKWOOL promotes the sustainable production and use of insulation and is committed to a continuous process of environmental improvement. Made from a renewable and plentiful naturally occurring resource, Rockwool insulation saves fuel costs and energy in use and relies on trapped air for its thermal properties. ROCKWOOL does not contain (and has never contained) gases that have ozone depletion potential (ODP) or global warming potential (GWP). All ROCKWOOL products provide outstanding thermal protection as well as four...

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