You might be planning to renovate your roof or build a new home. If yes, then remember, one crucial decision you’ll face is choosing between a warm roof and a cold roof. While the names might leave you wondering about their significance, fear not! I’m here to help you.
In this blog post, I’ll dive into the key differences between warm roofs and cold roofs, helping you make an informed choice. Whether you’re seeking energy efficiency, cost-effectiveness, or simply a more comfortable living environment, understanding these roof types will steer you in the right direction.
A warm roof is a type of roof that has insulation on top of the roof deck, rather than between the rafters. This helps to keep the building warmer in winter and cooler in summer. Warm roofs are more effective at conserving heat than cold roofs, which have insulation between the rafters.
There are two main types of warm roofs: inverted roofs and traditional warm roofs.
As the name suggests, the inverted roof is the type of warm roof that is installed upside down. These roofs have insulation on top of the roof deck, followed by a waterproof membrane, and then a layer of roofing material.
Warm inverted roof construction finds its application in scenarios such as roof terraces and flat roofs subjected to frequent heavy foot traffic.
Traditional warm roofs have insulation on top of the rafters, followed by a vapour barrier and then a layer of roofing material.
A cold roof is a roof type where the insulation is placed between the ceiling joists. As a result, the roof structure and any space above the insulation tend to be colder than the living space below it. Cold roofs are generally cheaper to install but have lower energy efficiency compared to warm roofs.
For your information, the term ‘Cold Roof’ may be misleading as it doesn’t refer to the temperature itself but rather to its relatively lower efficiency compared to a warm roof. The distinction arises from the fact that the rafters in a cold roof remain uninsulated.
Consequently, on colder days, the rafters can conduct some of the cold temperatures into the rooms below, resulting in thermal bridging and potentially lowering the overall temperature within the house.
When contemplating a cold roof, remember the following key points:
A warm roof offers advantages such as improved energy efficiency, consistent indoor temperatures, and reduced noise pollution. However, it comes with higher installation costs and potential issues with reduced attic space and increased risk of leaks.
On the other hand, a cold roof is less expensive to install and provides more storage space in the attic. However, it is less energy-efficient, more prone to condensation, and may be noisier during rainfall.
To decide which one is right for you, consider factors like your budget, energy efficiency goals, available space, and climate conditions. If energy efficiency and a comfortable living environment are top priorities, a warm roof might be the better choice.
On the other hand, if cost savings and attic storage space are more important to you, a cold roof could be a suitable option.
Copyright © 2023 S. Tomic Roofing Ltd
SEO by BRANDIX SOFT