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How to choose the right roof for your house or extension?

Writer's picture: Dean RaintonDean Rainton


There are many things to take into consideration when it comes to choosing a roof for your home. Your roof is exposed to all that mother nature can throw at it, for example, fallen trees and storm damage (loose tiles).

Tavan Contractors can help you with all things roof related. We specialise in general roof maintenance, new and extension roofs. Making the wrong choice can lead to a complicated and expensive error.


What to look for in a roof?

When choosing your roof there are many factors to take into consideration.

  • How long will it last?

  • Will hold its own under extreme weather conditions7?

  • Do you want a pitched or flat roof?

  • What will be cost be?

  • Will the final look compliment not only the house but also the surrounding environment?

Pitches roof options

Slate roofing tiles have their upsides, mostly the fact that it’s a natural source of the highest

quality and is long-lasting and gives a beautiful finish to any home.


Pros of slate are:

  • It is fire resistant

  • It has a long life if fitted correctly

  • It can come in a wide range of colours including grey, purple and black

  • It is environmentally friendly – made from natural materials

  • It is long-lasting and durable

Cons of slate are:

  • Cost – it is one of the more expensive materials to be used and needs specialist fitters to install

  • They are heavier than your normal roof tile so a good, strong structure is a must

  • Can only be used on sloped roofs

There are various types of slate:

  • Naturally sourced

  • Fibre cement which made from cement and other elements

  • Man-made which is mostly made from reconstituted slate

Tile roofs are beautiful and very durable. Traditionally most roofs were made out of slate, fired clay or terra cotta but today’s modern rooftrees are made out of moulded concrete which can be tinted.


Pro of tiles are:

  • Long lasting for up to 100 years

  • Impervious to rot and insect damage

  • Environmentally friendly material

  • Energy efficient

  • Low maintenance

  • Plenty of style and colour choice

The cons of tiles are:

  • Can be expensive

  • Has to be installed by professional roofing contractors

  • Heavyweight so your need a good structure to support the weight

  • Not suitable for slopes of roofs


Flat roof

This is created from a very strong and flexible material made from a synthetic polymer. A flat roof is in fact, not completely flat; it has a very low slope which helps with draining water.


The pros of a flat roof:

  • Repair costs are relatively low (they take up less space so use fewer materials)

  • They can be versatile – why not turn yours into a roof garden?

  • They are energy efficient. Less overhead space for stagnates air.

  • The material used (normally rubber) is reliable and durable and sustainable

The cons of a flat roof:

  • Higher chance of early replacement – life expectancy 6of a flat roof is around 10 years

  • Unreliable in cold weather; water is more likely to accumulate.


Felt flat roof

Felt roofing is normally used on sheds, garages and extensions. The felt material is often integrated with 2 – 3 layers forming a water-resistant finish.

The pros of felt roofing:

  • It is one of the cheapest materials to use therefore easy on your pocket

  • It is very versatile and can be used on most properties

  • It is very easy to repair and this will not affect the aesthetics of it


The cons of felt:

  • Not great when used in an area with heavy foot traffic

  • Any small area of damage can be disastrous. Ensure items like ladders have padding when using on felt roofing

Felt can last around 15 years and can be recycled so makes this a great eco-friendly material to use.


Fibreglass flat roofing

Fibreglass roof is a combination of materials mixed together to form a laminate.


The pros of fibreglass:

  • It is an incredibly strong material

  • It is lightweight and so will not add too much weight to your structure

  • They are very durable and can last up to 25 years

  • Very easy to repair


The cons of fibreglass:

  • Fibreglass is not the cheapest flat roof option

  • It is not suitable for very large areas

  • It’s a fussy material. You cannot install it in any weather, you have to wait for the right conditions


Rubber flat roofing

Rubber roofing is made from material combining recycled tyres, slate and sawdust. It can come either in a roil where it is overlapped or it is available in shingle that has the look of slate tiles.


The pros of rubber:

  • It is one of the cheaper materials to use

  • It is lightweight and very easy to install

  • It has a long life and can last over 30 years

  • Is fire resistant so gives you added peace of mind


The cons of rubber:

  • The colour can fade over time therefore not as attractive as other materials

  • It is another fussy material and can only be installed in dry conditions

  • It is rather delicate and therefore more prone to damage from falling branches etc


Finishing off your roof

Subtle finishes to your roof can make all the difference and really compliment your new roof.


These are essential to finish your roof and helps protect the roofline and loft area from the elements.


There are 3 types of fascia boards available. The materials used are vinyl, aluminium and timber. Each one has its own quality and each should be considered before choosing.

Timber – gives an eye-pleasing finish, is affordable and is mostly water-resistant

Aluminium – easy to install and complements other materials but is slightly more expensive

uPVC – very cost-effective, easy to clean and maintain, very durable against the elements and quick to install

As with facias, there are a small selection of soffits available. It is best to consider certain things before investing, for example, your local climate and budget.

Again there are various materials used; timber, steel, fibre cement, uPVC and aluminium.

Timber – gives a natural and timeless finish, is recyclable and therefore eco-friendly.

Steel – is a long-lasting and durable material, stands up to the elements and can come in a range of colours

Fibre cement – is a lightweight material, withstands all the elements and is very affordable

uPVC – easy to install and very cost-effective, rot and water-resistant

Aluminium – low maintenance, easy installation, can withstand high levels of moisture and does not crack or chip




Loft conversions are a great way to add another room to your property without having to move. There are various types of loft conversion style windows.


Velux (roof light) – these can be used in your loft space without having to change the original shape. Velux windows are designed to fit flush with the roof. Great if you do not want to spend a fortune.



Casement windows - A more traditional hinged loft extension window like those you probably have in the rest of your house. These loft conversion windows are ideal for dormer conversions and hip to gable conversions where there is a straight wall on at least one part of the roof.

Juliet balcony – perfect for a dormer or gable. This is a tall window with a metal or glass barrier across the front of it. Great if the conversion is overlooking the garden or offers beautiful views and gives plenty of fresh air.

Velux Cabrio balcony – when closed on a pitched roof this looks like a skylight but when opened up in transformers into a small balcony you can step out onto. Great for smaller, compact conversions.




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