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Flat Roofs

Many types of buildings and structures use flat roofs, including garages, homes, and extensions. Timber frames serve as structural supports for the flat roofs. Structures bearing loads are composed of load-bearing flat roof joists spanning the shorter length of the roof. Next timber decking is installed with the weight supported by joists. There are two popular methods in which joists are attached to load bearing walls. These are either using timber wall plates or through using metal flat roof joist hangers.

What are the different types of flat roof coverings?

There are many different types of flat roof coverings to suit different buildings and purposes. The most important feature of a flat roof covering is that it should have a waterproof exterior layer. Some of the most popular types of waterproof flat roof coverings are EPDM rubber, Asphalt, PVC based materials and bitumen based felt.

There are two types of bitumen-based coverings, asphalt and bitumen flat roof felt, that need to be considered when choosing a flat roof covering. Most properties opt for bitumen felt as the flat roof covering choice but there are advantages to using either asphalt or felt.

As it is a bitumen-based material, mastic asphalt is waterproof and extremely weather-resistant. Used on many commercial properties, the asphalt is typically melted, poured, and spread while it is hot during a roofing job. This is not recommended for DIY enthusiasts and should be left to trained professionals as applying asphalt brings along many hazards and dangers.

A bitumen felt flat roof is composed of layers of bitumen-infused sheets. You can buy them as self-adhesive sheets, or you can bond them together with hot or cold bitumen.

Advantages of Flat Roofs

It is no wonder why flat roofs have risen in popularity as the roofing choice for many UK properties. Flat roofs offer both short- and long-term advantages which can save you a lot of money in the long run.

Easy to Maintain

As flat roofs are most popular in commercial properties, it is important that they are easy to access. This ease of access allows flat roofs to be easy and regular to maintain which can avoid expensive future repair costs.

Design

Like many roofing options, flat roofs offer many different styles, materials, and techniques to suit many properties and purposes. For the environmentally conscious, solar panels can be installed on flat roofs and many flat roofing options can be made from recycled and recyclable materials.

Durability

As flat roofs are made to be waterproof and weather resistant, they are extremely durable. High quality flat roofs can be long-lasting with the average lifespan around 30 to 40 years with some roofs made from mastic asphalt lasting as long as 50 years.

Cost

With any project in mind, how much it will cost is always at the forefront. The advantage of flat roofs is that they are quite a low-cost option as are relatively cheap, are quick to install and are easy to maintain saving on heavy repair costs in the future. A large portion of heat can escape through the roof, however flat roofs use thermally efficient materials that can help to prevent heat loss and save you money on your energy bills.

How much does it cost to install a flat roof?

Many factors can affect the cost of a flat roof including the type of roof you choose, the material or the size of the roof. As a rough guide, most flat roofs cost between £1000 to £5000. Flat roofs costs for a standard roof takes 2 to 3 days to install and will cost between £1500 to £5000. An extension flat rood takes 2 to 3 days but is slightly cheaper at £500 to £3000. A double garage can be installed in 2 to 3 days and will cost around £1000 to £2000.

For the individual material costs these can range between £40 to £120 per square metre depending on the roofing material you choose. Felt flat roofs are the cheapest and range between £40 to £70, rubber and fibreglass roofs range between £80 to £100 and lead bay roofs are the most expensive and can cost up to £110 per square metre.

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