Bitumen is a classic material for flat and slightly pitched roofs. It consists of a mixture of petroleum products, reinforced with polyester or glass fleece. Due to its waterproof properties and strong adhesion, bitumen remains a popular solution for both new construction and renovation. Application is usually carried out using a torch, which causes the material to melt firmly onto the substrate.
Bitumen or EPDM: what is the difference?
EPDM is a relatively new choice, made of synthetic rubber. Bitumen, on the other hand, has proven itself as robust and reliable for decades. Bitumen is applied in strips. This creates seams, but with the right techniques, these remain watertight for a long time.
An important difference lies in the processing. Bitumen requires heating, which demands craftsmanship but also provides an immediate, strong bond. EPDM is usually cold-bonded and is therefore easier to work with for simple roofs, but less suitable for complex details. There are also differences in terms of lifespan: while EPDM is known to last 40 years, bitumen offers an average of 20 to 25 years of protection. However, bitumen is more affordable to purchase and quicker to repair in the event of damage.
Can you walk on a bitumen roof?
Yes, that is possible without any problem. Bitumen is strong enough to withstand normal loads, such as maintenance work or inspections. For more intensive use, such as a roof terrace, it is wise to apply extra protective layers, for example in the form of tiles or a walkway. This way, the roofing remains in good condition for longer.
How long does bitumen roofing last?
A properly installed bitumen roof lasts an average of 20 to 25 years. Factors such as the quality of the material, the skill of the roofer, and regular inspection ultimately determine the lifespan. With timely minor repairs, a bitumen roof remains reliable and watertight.
How thick should bitumen be?
The standard thickness of bitumen roofing membranes is around 4 to 5 mm. For applications where extra strength is required, such as roof terraces or heavily used industrial roofs, thicker or double layers are recommended. The correct construction not only ensures a longer lifespan but also increases resistance to mechanical damage.
Are there any disadvantages to bitumen?
Bitumen requires maintenance. Due to exposure to sun, frost, and temperature fluctuations, the material can dry out or develop small cracks over time. Regular inspections and minor repairs prevent larger problems. Additionally, open flames are required for application, which necessitates specific safety measures. Nevertheless, experienced roofers are fully equipped for this and ensure safe processing.
Bitumen is susceptible to aging, but with correct application and proper maintenance, it offers reliable protection against the elements for many years.
Immediate advice on bitumen roofing
Would you like to know more about bitumen or receive advice for your roof? Contact Smienk Dakwerken directly. We are happy to help you find a solution that suits your situation.
