- Project plans
- Project activities
- Legislation and standards
- Industry context
- Specialist wikis
Last edited 21 Oct 2020
On flat roofs, a 'warm roof' is one in which the insulation layer is laid on top of roof structure. This results in the structural deck and its supports being at a temperature closer to that of the building’s interior. This is as opposed to a 'cold roof' in which the insulation is below, or within the roof structure, and so the roof structure is closer to the outside temperature.
On pitched roofs, the definition of warm or cold can relate to the entire space below the pitch of the roof, but above the ceiling. This means that a warm roof might be one in which the insulation is installed in line with the rafters (rather than above the roof structure), so that the space under the pitch, ie a loft, attic or other space is insulated and warm. A cold roof in this case would typically have insulation laid above the ceiling so that the loft space below the pitched roof is cold relative to the rest of the property.
 Related articles on Designing Buildings Wiki
Featured articles and news
Temperature in buildings, explained on DB
Main barrier to entering the profession, new study reveals.
On Levelling-Up and Regeneration Bill.
Over 70 managers and organisations shortlisted for the 14 awards.
From biometric to electrical current, chemical and more.
Changes are due to come into force on 1st October 2022.
Heed advice and insight of this report IPA tells the government.
From the Commonwealth Association of Architects.
For the Levelling Up, Housing & Communities Committee.
BSRIA's Technical Director reflects on recent weather patterns.
A national valuation to fund old-age pensions.
The world’s largest Commonwealth memorial to the missing.
Long after the end of the defects liability period.
Occupant satisfaction and wellbeing in buildings.
From the simple to the complex.
And the UK Government guidelines.
Commitment agreed to by major built environment bodies.
Electrical skills, low carbon, high-tech and the building services revolution.
Ultra-deep drilling with millimeter-wave beam technology.
Looking at the built environment from space.
BSI standards 8671, 8672 and 8673.
Bringing life to burial grounds.
From failed modernism to twenty-minute neighbourhoods.
The gates process and change control.