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Amadi, A I and Higham, A (2019) Putting context to numbers: a geotechnical risk trajectory to cost overrun extremism. Construction Management and Economics, 37(04), 217–37.

Brager, G and Baker, L (2009) Occupant satisfaction in mixed-mode buildings. Building Research & Information, 37(04), 369–80.

Isaacs, N (2019) Evolution of sub-floor moisture management requirements in UK, USA and New Zealand 1600s to 1969. International Journal of Building Pathology and Adaptation, 37(04), 366–94.

Kölsch, P (2019) Hygrothermal simulation of cathedral ceiling roofs with ventilated roofing tiles. International Journal of Building Pathology and Adaptation, 37(04), 473–87.

Kalz, D E, Pfafferott, J, Herkel, S and Wagner, A (2009) Building signatures correlating thermal comfort and low-energy cooling: in-use performance. Building Research & Information, 37(04), 413–32.

Lee, I, Roppel, P, Lawton, M and Ferreira, P (2019) Design limits for framed wall assemblies dependent on material choices for sheathing membranes and exterior insulation. International Journal of Building Pathology and Adaptation, 37(04), 426–47.

Lomas, K J, Cook, M J and Short, C A (2009) Commissioning hybrid advanced naturally ventilated buildings: a US case study. Building Research & Information, 37(04), 397–412.

Loosemore, M and Reid, S (2019) The social procurement practices of tier-one construction contractors in Australia. Construction Management and Economics, 37(04), 183–200.

Nicol, J F, Hacker, J, Spires, B and Davies, H (2009) Suggestion for new approach to overheating diagnostics. Building Research & Information, 37(04), 348–57.

Pelsmakers, S, Vereecken, E, Airaksinen, M and Elwell, C C (2019) Void conditions and potential for mould growth in insulated and uninsulated suspended timber ground floors. International Journal of Building Pathology and Adaptation, 37(04), 395–425.

Pout, C and Hitchin, E R (2009) Future environmental impacts of room air-conditioners in Europe. Building Research & Information, 37(04), 358–68.

Rijal, H B, Humphreys, M A and Nicol, J F (2009) Understanding occupant behaviour: the use of controls in mixed-mode office buildings. Building Research & Information, 37(04), 381–96.

Rose, W (2019) Must attic ventilation be preserved in energy retrofits?. International Journal of Building Pathology and Adaptation, 37(04), 461–72.

  • Type: Journal Article
  • Keywords: Ventilation; Energy; Moisture; Attic; Buoyancy;
  • ISBN/ISSN: 2398-4708
  • URL: https://doi.org/10.1108/IJBPA-08-2018-0072
  • Abstract:
    The addition of thermal insulation into attics along with air-tightening of the ceiling plane is a common first step in making homes more energy efficient. Attic ventilation was introduced decades ago on the assumption that air leakage across the ceiling was inevitable and not correctible – this was before the era of spray-applied foams. Often attic ventilation is provided at roof eaves, and ensuring good insulation in their location is critical to avoid cold corners in the rooms below. So may vents be blocked in the course of energy retrofits? The paper aims to discuss this issue. Design/methodology/approach This study consists of a simple spreadsheet model of attic performance. The model is built using material from ASHRAE Handbook Fundamentals and ASHRAE Standards. It includes: Glaser calculations for temperature, vapor pressure and vapor pressure excess; radiation exchange – solar and sky; buoyancy flow assumption for leakage from indoors; wind flow assumption for leakage from outdoors; and change in attic air RH as assumed indicator of change in sheathing moisture performance. Findings The model results show that lowered moisture contributions across air-tightened ceilings may compensate effectively for added insulation (which lowers the attic air temperature) and reduced moisture dilution from attic ventilation. Originality/value These results provide support for the policy of allowing attic ventilation reductions that are proportionate to ceiling air leakage reductions as part of weatherization efforts. Given the limitations of the model, continued field observations remain critical.

Rupp, S H and Plagmann, M (2019) Characterisation of air permeability of common ceiling linings and penetrations. International Journal of Building Pathology and Adaptation, 37(04), 448–60.

Smith, S D (2019) Safety first? Production pressures and the implications on safety and health. Construction Management and Economics, 37(04), 238–42.

Toppinen, A, Sauru, M, Pätäri, S, Lähtinen, K and Tuppura, A (2019) Internal and external factors of competitiveness shaping the future of wooden multistory construction in Finland and Sweden. Construction Management and Economics, 37(04), 201–16.

Tuohy, P (2009) Regulations and robust low-carbon buildings. Building Research & Information, 37(04), 45.