Warm roofs offer a superior thermal performance and therefore come with a higher cost.
Warm roof cold roof insulation.
Flat roof there are three options available.
A warm roof building will make the entire structure of the building warm in an attempt to avoid any cold bridging.
The thermal efficiency isn t as good as with warm roof.
Introduction warm cold roofs this guidance offers guidance on the difference benefits between warm and cold roofs.
The insulation is immediately below the waterproofing layer.
Cold deck or cold roof is where the insulation is below the roof deck and the associated joists.
The breakdown warm roof vs cold roof.
A cold flat roof insulation requires more work taking off old boards and replacing them and the roof surface.
If an existing cold roof is to be refurbished consideration should be given to converting the design to a warm roof or incorporating new insulation into the roofing system to improve thermal performance.
Installing a warm roof can be extremely straight forward and simple to do.
This is often just called loft insulation.
If you have been considering a new roof installation looking into adding insulation to your home or are planning to build a new house you may have heard people talk about hot roof and cold roof systems.
Ventilation is required for these roofs.
Warm roof insulation ensures the entire roof structure is insulated meaning a warm deck roof is more energy efficient than a cold roof.
Typically a gap will have to be left for ventilation because this is a cold area.
This construction relies on a vapour control layer working effectively and in tandem with a continuous ventilated airspace to disperse the water vapour to atmosphere before it reaches the cold deck and condenses.
However you may not be familiar with these concepts particularly what they mean and the pros and cons of each.
Insulation is placed over and between the wooden joists above the ceiling of your home s top floor.
The simplest and cheapest roof insulation is the classic cold loft option.
Cold bridging occurs when there is a continuous path created through the insulation.
A warm roof construction has many benefits over a traditional cold roof essentially it is a breathable roof.
Warm deck cold deck or inverted roof.
The vapour control layer is above the decking but below the insulation.
A cold roof has the insulation placed below the structural deck which thus remains cold.
The insulation can be adhered mechanically fixed or loose laid.
A warm flat roof or a built up roof bur is one where all the insulation is above the joists deck making them part of the warm fabric of the building.
Cold loft insulation for pitched roofs.
