Gwynne Anthony 2020

ART506 Dissertation 2019. Anthony Gwynne . 110 Non- hydraulic/ hydraulic lime render/plaster mixes. Type of lime binder and number of coats Non-hydraulic or hydraulic lime used for external renders and internal plasters should be suitable for the wall type and degree of exposure and mixed with aggregates (to match the existing where necessary) in accordance with the guidance tables below: Lime render/plasters can take several months to fully cure and should be left to weather down naturally without the application any artificial weathering which could damage the render/plaster. Only breathable paints as detailed in this guidance should be used on breathable renders/ plasters and should be applied in accordance with the paint manufacturer's details. Guidance Table 3: Lime render/plaster mixes (suggested mixes) Wall Construction Internal plaster or External render Base /leveling Coat(s) Number and thickness of base/leveling coat(s) Top /finishing coat (top/finishing coat should not be harder than the base coat) Number and thickness of top coat Cob, rammed earth, straw bale 1 (Haired base coats) Internal plaster Fat Lime Base Coat Plaster 2 x 9mm Fat Lime Top Coat Plaster 1 x 3mm External render Fat Lime Base Coat Plaster or Hydraulic Lime NHL2 2 x 9mm 2 x 9mm Fat Lime Top Coat Plaster or Hydraulic Lime NHL2 1 x 6mm 1 x 6mm Reed mat, reed board (Haired base coat) Internal plaster** Fat Lime Plaster for Boards 2 x 9mm Fat Lime Top Coat Plaster 1 x 3mm External render N/A N/A Celenit Wood Wool boards (Mesh base coat) Internal** walls and ceilings Fat Lime Plaster for Boards (un haired) or Hydraulic Lime NHL3.5/ NHL2 (with beach aggregate) 2 x 6mm 1 x 6mm Fat Lime Top Coat Plaster or Hydraulic Lime NHL 3.5 1 x 3mm 1 x 6mm External render Hydraulic Lime NHL3.5 (with beach aggregate) 1 x 9mm Hydraulic Lime NHL 3.5 1 x 9mm Wood fibre boards (Mesh base coat) Internal plaster** Fat Lime Plaster for Boards or Hydraulic Lime NHL3.5 (with beach aggregate) 2 x 6mm 1 x 6mm Fat Lime Top Coat Plaster Hydraulic Lime NHL 3.5 1 x 3mm 1 x 6mm External render Hydraulic Lime NHL3.5 (with beach aggregate) 1 x 9mm Hydraulic Lime NHL 3.5 1 x 9mm Lath (internal only) or soft stone (haired base coats) Internal plaster Fat Lime Base Coat Plaster 2 x 9mm Fat Lime Top Coat Plaster 1 x 3mm External render Hydraulic Lime NHL 3.5/ NHL2 2 x 9mm Fat Lime Top Coat Plaster or Hydraulic Lime NHL 3.5 / NHL2 1 x 6mm 1 x 6mm Soft brick (haired base coats Internal plaster Fat Lime Base Coat Plaster 2 x 9mm Fat Lime Top Coat Plaster 1 x 3mm External render Fat Lime Base Coat Plaster or Hydraulic Lime NHL 3.5/ NHL2 2 x 9mm 2 x 9mm Fat Lime Top Coat Plaster or Hydraulic Lime NHL 3.5 / NHL2 1 x 6mm 1 x 6mm Hard stone (haired base coats Internal plaster Hydraulic Lime NHL 2 2 x 9mm Fat Lime Top Coat Plaster 1 x 3mm External render Hydraulic Lime NHL 3.5 2 x 9mm Hydraulic Lime NHL 3.5 1 x 6mm Hard engineering brick or dense concrete blocks (10mm mesh or haired base coat) Internal plaster Hydraulic Lime NHL 3.5/ NHL2 2 x 9mm Fat Lime Top Coat Plaster or Hydraulic Lime NHL 3.5 / NHL2 1 x 3mm 1 x 6mm External render Hydraulic Lime NHL 3.5 2 x 9mm Hydraulic Lime NHL 3.5 / NHL2 1 x 6mm Insulation blocks* (10mm mesh or Internal plaster Hydraulic Lime NHL 3.5/ NHL2 2 x 9mm Fat Lime Top Coat Plaster 1 x 3mm