Flat Roof Extension Cost Ireland

House extension cost calculator only valid for extensions from 12 square metres upwards.

Flat roof extension cost ireland.

The latter is uncommon in ireland. With some buildings depending on where the windows are giving better views and vista. Cost of building an extension. It is more cost effective than building a new ground floor extension providing the existing foundations can take the load an engineer or surveyor can advise.

However if your extension is non standard or no one in your neighbourhood has undertaken an extension for a number of years then it is not always. A flat roof is designed to drain to outlets and working around rooflights and obstructions can easily be achieved. In london and the south east the average cost per m2 is around 1 500 2 000. 400mm of mineral wool to the flat ceilings area 450 proprietary rafter roll for ventilation at the eaves junction 50 over fascia ventilators 50 breathable felt 200 the above assumes a standard cold roof scenario if you cant get them to add the above free of charge you should consider paying the additional cost for it.

Flat roofs are becoming increasingly popular for extensions with finishing materials including copper zinc or lead torch on felt pvc sheeting or liquid asphalt mastic. Flat roofs are popular usually on rear or side extensions avoiding the need for an apex or pitch. The average cost per m2 for an extension outside of london is between 1 200 1 500. For two storey extensions add 50 to the cost of a single storey extension.

House extension cost calculator are you looking for more space or thinking of buying a house and extending it yourself. To seal cracks on a flat roof the cost can be approximately 500 to 1 200. Please note that the above extension cost is indicative and your budget should not be relied upon as price will vary significantly for each individual project. Flat roofs shouldn t really be flat anyway.

Even though joists go in level firring pieces are used to give it a small fall about 1 60 or 1 degree and direct water to an outlet or gutter. There are generally three different types of flat roof construction known as a cold roof deck a warm roof deck or an inverted warm roof deck. House extensions for every budget between 20 000 and 30 000 can include building an extension over a garage that s already there.