Insulation Flat Roofs Cold Roofs

A cold flat roof is one where the insulation is between or between and below the roof joists.

Insulation flat roofs cold roofs.

There are many different types and installation methods out there along with a lot misinformation about which products offer the greatest energy savings. The roof may be described as warm deck or cold deck depending on whether the insulation is above or below the main solid roof layer. Cold flat roof insulation. Cold deck roof a cold deck roof is where the insulation is placed between the joists rafters or in between the ceiling joists in the case of a pitch roof.

How to insulate a flat roof. Here we share the most common mistakes people make when installing flat roofing insulation. Lots of traditional flat roofs are of the cold roof construction type. Most old flat roofs can be insulated however sometimes the cost becomes restrictive take an example of a flat roof that got a bedroom under it and above a balcony opens up onto the flat roof the step of the door out onto the roof is only 50mm above the existing roof.

As there are two types of flat roofs available that require different types of insulation the methods used. So it makes the job entirely more complex and increases the timescale of the project extensively. A cold roof has the insulation placed below the structural deck which thus remains cold. Ventilation is required for these roofs.

It requires the existing roof surface to be ripped up so that the insulation can be laid in between before a new roof surface is then placed over the top. The insulation is below the deck but above the plasterboard. See our flat roof insulation solutions. It allows insulation to be added without having to replace the waterproofing on.

Adding insulation to an existing flat roof generally requires the removal and replacement of some of the existing structure. This is used for refurbishment e g. Refurbishing an existing timber joisted flat roof which has no insulation. Our range of high and optimum performance flat roof insulation products are suitable for use in a range of flat roofs.

Insulation is placed in between the joists underneath the roof surface above. However cold roof insulation on an existing flat roof system is anything but simple. Roofing insulation is one of the most important and misunderstood building components. This means there is a vapour control layer in the ceiling and cross ventilation at the eaves or the top of the walls.

This may help with condensation but causes such a loss of heat that it has been banned in scotland. Introduction warm cold roofs this guidance offers guidance on the difference benefits between warm and cold roofs.