Flat Roof Solutions
Whether you’re planning a self-build or are looking for home renovation advice, you might be looking into flat roofs. There are many flat roof solutions available that might make you want to go down this route, so here’s a handy guide packed with useful facts.
Don’t flat roofs just gather water?
Before delving into the benefits of a flat roof and the types available, let’s take a look at a common misconception – that flat roofs are a no-go as they simply gather water. The truth is; architectural services have come on leaps and bounds in recent years and are designed with a slope – known as a fall – which helps to get rid of excess rainwater. The fall should never be less than 1:80 and should preferably be about 1:40. There are many ways for a ‘fall’ to be incorporated into a design. For instance, battens cut at an angle are known as ‘firring strips.’ These are placed on top of the roof joists to help water drain away effectively.
What are the benefits of flat roofs?
There are many benefits to getting a flat roof installed, so it’s well worth arranging a free architect consultation and discussing your options. Firstly, it frees up internal space as the walls inside are straight and don’t slope, creating a bright, airy environment. Secondly, you can create all kinds of interesting shapes underneath the roof without worrying about how it will stay up. This allows for self-build and extension flexibility and fun designs according to personal taste. Another major benefit is that flat roofs are cheaper to construct as they take less materials to cover the same span.
How to build a flat roof
When it comes to building a flat roof on a new build or extension, make sure you have the relevant planning permission for the construction. Once that’s done, there are three main options when it comes to flat roof design.
- To create a warm roof – With this, the roof insulation sits on top of the timber structure for ‘warmth’ and then the roofing membrane is placed on top of the insulation.
- To create a cold roof – This is where the insulation is placed between the rafters, underneath the ply roof covering. Warm roofs are often preferred on new builds.
- To create a hybrid roof – this is a variation of a warm roof, with some including a ventilation gap to avoid a build-up of moisture.
Of course, you’re not expected to know this all yourself unless you’re in the building industry. So, always call in the professionals to offer a helping hand and make your flat roof design dreams a reality.
Flat roof coverings
There are many coverings for flat roofs, all of which should come with a long-term guarantee. Again, seek out professionals such as architects South East London and Croydon architects for advice that will make your property safe and secure. Options include:
- Torch-on felt – this is applied hot, in layers
- Mastic asphalt – a long-lasting material with exceptional durability
- EBDM rubberised roofing – a popular choice and easy to install
- Single ply membranes – one of the most common materials used is PVC
- Liquid roofs – a paint-on solution for awkwardly shaped roofs