Warm Flat Roof Insulation Cost

Since 2005 if you replace 25 or more of your roof covering felt then you need to ensure that the entire flat roof has enough insulation to satisfy current building regulations.

Warm flat roof insulation cost.

The insulation is placed underneath the roof covering and the roof construction. Installing a warm roof can be extremely straight forward and simple to do. In case of a warm roof your roof is part of the insulation shell. For bay window roofs expect to pay from 350 900 and for dormer window roofs between 700 1 300.

For a 1 inch board equivalent of 6 r value. The approach is different when you have a flat roof. Warm or cold deck insulation can cost around 35 per square metre not too dissimilar from other roof insulation prices however exterior insulation is more expensive and can cost around 80 per square metre. Cost of a warm flat roof.

You can opt for a so called cold or warm flat roof. This only applies to flat roofs over habitable parts of your home so it excludes garages sheds some porches and most door canopies. It is top quality and the most cost effective product for your flat roof. We recommend having at least 20 r value worth of material for optimal energy efficiency.

More details can be seen in the table below. This method is especially applied to existing flat roofs which are restricted to a certain height. This means that the insulation should be highly resistant to water absorption for example an extruded polystyrene based product which will not be affected by water or repeated freeze thaw cycles. This way you will get the most out of your insulation.

Flat roof replacement costs. 65 105 m receive a customised quote cold roof insulate from the inside. With a warm roof the insulation is installed on top of the existing surface rather than in between the rafters. Flat roof extensions cost from 700 lowest possible and can reach up to 3 000.

You can expect to pay about 55 100 sq ft. Inverted roofs are a type of warm flat roof where the insulation is above the waterproofing layer. There are three types of insulation for flat roofs and a professional should help you to decide which one is best for you. Warm roofs offer a superior thermal performance and therefore come with a higher cost.

Flat roof cost per square metre. While expensive the best insulation is polyiso rigid foam. The exact material you use will have an impact on the cost of the roof with basic felt solutions costing around 50 per square metre for the material itself and more high end materials such as modern grp a form of fibreglass going up to 90 per square metre but allowing unlimited options in terms of colour and generally being more long lasting.