The roof design that slopes sideways from a central line is called hip roof. Sometimes, instead of the central line, a hipped roofing system is designed to meet at a point. This type of roofs looks like a pyramid. Some of the old buildings of the city retain the traditional pyramid-like hipped roofing system till date. Of course, this is not the only variation of the hipped roof you may get to see in Singapore. Some of the common hipped roofing styles include the following.
Mansard roof – This type of roofing system originated in France. The original plan was made by François Mansart, a famous architect of the country. This roofing system became hugely popular in the country and was later on was replicated to the residential buildings across the globe. This type of roofing has four gently sloping slides. It is also marked by the presence of dormer windows. A portion of Istana Negara Singapura, the office and residence of the President of Singapore, has mansard roofing system.
Dutch Gablet – Dutch Gablet or Dutch gable roofing system brings together gable and hipped roof. The lower level is dedicated to the hipped roofing structure and the upper level is reserved for the gable roof. This type of composite structure helps you design a more expansive top floor level for your home.
Cross hipped roof – In this type of roof style, several separate hipped rooflines meet at a specific point. It creates a rather complex structure and is quite difficult to design. This type of roofing is suitable for large buildings with several wings.
Hipped roofing system offers several distinct advantages over some of the other type of roof designs. It is easy to maintain and durable. Unlike flat roof, the design does not encourage standing rainwater on the rooftop. It is stylish and as suitable for the traditional buildings as the contemporary ones.
What materials are required and costs to be borne for hip roof?
The following roofing materials will help you build a hipped roofing system in your home.
Wood – This is one of the most important raw materials needed to build the framework or roof trusses. Wooden roof trusses are long lasting and capable of withstanding the elements of nature. They give proper support to your roofing system and are aesthetically pleasing. Red cedar, Douglas fir and pine are some of the popular wood types used for this purpose.
The high price of hardwood is increasingly making some of the other alternatives like plywood, aluminium and iron popular. Framework made of these materials is lighter and more affordable. They are widely available in the local market and online.
Sheathing materials – Foam boards, plywood, Oriented Strand Board (OSB) or fibreglass are commonly used for roof insulation. Fibreglass and foam boards are cheaper, but plywood and OSB are more durable. Wood or asphalt shingles are used to cover the framework. Their presence makes the roofing system waterproof. Mortar helps to bind the shingles in their places. Mortar is sometimes used to hold the roof tiles in their places too.
To complete the task you will need some other materials like nails, braces, clamps and glue. Equipments like ladder, glue gun and measuring tape will help you to finish the job with accuracy. Don’t ignore buying safety helmets, gloves and goggles if you mean to work on the project yourself.
The cost of building hipped roof in Singapore would be between SGD 400 and SGD 550 per square metre. Within this budget you will be able to purchase the raw materials, hire professional roofers and pay for the actual process of installation.
Hipped roof installation process
Discuss your design requirements with an architect. Seek help from an experienced roofer to install the roofing system. Try to install it by yourself only if you have a reasonable experience of doing so. The following steps will guide you through the process.
Buy prefabricated trusses or build the framework yourself. Use a measuring tape to accurately measure the available area. Size the beams and the rafters accordingly. Attach the beams with the rafters. You will need braces and nails to do so. For greater efficiency, use a nail gun. Put the foam board, fibreglass or plywood boards over the trusses. Nail them to their position.
Attach wood or asphalt shingles to this layer. You will need mortar and glue specifically made for this purpose. Now cover the entire layer with tiles or corrugated metal. You may use terracotta tiles for this purpose. Slate is also being increasingly used for covering the top layer. Once again, use mortar to fix them in their places.
Hipped Roof vs Gable Roof - Pros and cons of each
Hipped roof and gable roof are both stylish and very useful in such places that experience heavy rainfall. They have a number of variations in design and are as suited to the traditionally designed buildings as the modern ones. Hipped roof boasts of a more complex design and requires expert intervention. Gable roof has a simpler structure and more DIY friendly. Gable roof is also more affordable than the hipped roofing system.