When used in roofs tyvek and airguard membranes provide optimal protection of the thermal insulation and reduce the risk of interstitial condensation enhancing the energy efficiency of the building.
Warm roof construction pitched.
Introduction warm cold roofs this guidance offers guidance on the difference benefits between warm and cold roofs.
In case of warm roofs they have an insulation above the roof deck in this way it keeps the deck warm.
In a cold roof the insulation is applied between the rafters but in a warm roof the insulation is applied on top of the existing roof surface.
There are many benefits to this type of construction including making a home more energy efficient and minimizing the thermal bridge at the eaves.
Another aspect of construction to consider is a warm pitched roof construction.
This is where you consider the ventilation and sealing of the roof.
A typical roof pitch in the uk for a traditional house will be 40 50 but at most it can go up to 70.
The position of the insulation can be wholly above or partially between and above the rafter.
In building construction roof pitch is a numerical measure of the steepness of a roof.
Cold roof voids are typically required to be ventilated.
Roof ridges and ridge tiles roof hips and hip tiles roof valleys roof verges and lead flashings.
Covers flat roof materials and flat roof construction of warm and cold roofs.
What is a warm roof or a cold roof.
Covers an overview of flat and pitched roofs.
Insulating a pitched roof above the rafters is the common method chosen for new builds and re roofing existing detached buildings as it provides superior thermal performance for the building.
In a warm pitched roof construction the thermal insulation is placed in the rafter line.
Inclined along the line of rafters warm roof or positioned within the roof structure to form an insulated void room in roof which can result in warm and cold roof areas.
As it avoids the need for aeration of the roof construction.
Namely the insulation layers.
In pitched roof construction thermal insulation can be placed horizontally at ceiling level cold roof.
Alternatively it can be positioned between the rafters or partially between and below the rafter.
An architect makes the usual decision of the pitch.
Insulating the roof above the rafters is known as warm roof insulation as the rafters are brought into the insulated envelope of the building.
Part 3 pitched roof detail.
Warm pitched roof construction.
Part 1 a guide to roof construction.
Ventilation is required for these roofs.
You create a warm roof or a cold roof simply by applying the layers of the roof in a different order.
A warm roof building will make the entire structure of the building warm in an attempt to avoid any cold bridging.
Part 4 flat roof construction.