Hot melt roofing

Hot melt roofing systems

High-class polymer-bitumen waterproofing membrane applied hot is perfectly suitable for:

  • performing waterproofing of flat roofs and roof terraces,
  • adhering traditional asphalt shingles on cardboard or fiberglass mat to a previously primed substrate,
  • ideal for bonding individual layers of roofing felt together in multi-layer systems for roofing,
  • the lack of any solvents in the bitumen structure shortens the binding time,
  • for performing moisture insulation on the exteriors of buildings,
  • for performing durable seamless waterproofing of roofs and roof terraces.

Key properties:

  • highly elastic hot mass creates a permanent membrane resistant to freeze-thaw cycles after binding,
  • retains elasticity to a temperature of -15˚C,
  • provides crack bridging,
  • high polymer content ensures the creation of a flexible and durable waterproofing membrane,
  • dry mass content: 100%.


  • apply the membrane at a temperature of 150-180˚C,
  • apply at least 2 layers – each 1-1.5 mm thick.

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Discover the Advantages of Hot Melt Roofing for Durable Waterproofing Solutions

Imagine a roofing solution that offers seamless application, strong adhesion, and impressive longevity. A solution so versatile, it’s suitable for a range of applications, including new build projects, zero falls and inverted roofs, and even green roofs. This is hot melt roofing, a waterproofing technique that uses hot-applied rubberized asphalt for durable and long-lasting protection. But what exactly is hot melt roofing, and what makes it a preferred choice in the construction industry? Let’s find out.

Key Takeaways

  • Hot Melt Roofing is a waterproofing solution offering seamless application, strong adhesion, low maintenance and long-lasting durability.
  • Comparing Hot Melt to Cold-Applied Systems reveals advantages of each system such as faster curing times for the former and greater flexibility for the latter.
  • When selecting a waterproofing solution it is important to consider factors such as manufacturer’s history, environmental sustainability and cost in order to ensure optimal performance.

Understanding Hot Melt Roofing


Hot melt roofing is a suitable solution for flat roofs and areas such as green roofs, terraces, podiums or car parks. This technique involves applying a monolithic membrane consisting of two layers of hot polymer-modified bitumen with polyester reinforcement to an appropriate deck. It offers several advantages like exceptional durability, resistance against impacts from rain/frost post-application and strong bond to the substrate due to virtually no packaging waste generation which makes it highly waterproof. Hot melt roofing provides inverted or buried protection along with other features that make it beneficial for any kind of surface apart from being particularly suited towards flattened ones without sacrificing efficiency in its application process!

Components of Hot Melt Systems

Hot melt roofing systems are composed of a few components that work together to provide the structure with strength and durability. It utilizes hot-applied rubberized asphalt membranes which when cooled form an impermeable barrier against water infiltration – providing protection from moisture damage on the underlying flat surface. Alongside this membrane is a spunbond polyester reinforcement layer as well as insulation layers for additional energy efficiency benefits. Followed by vapor barriers alongside hot melt adhesive glues before finally applying protective finishes such as drainage or gutter systems. This ensures complete coverage over the entire roof system in order to guarantee maximum benefit for long lasting performance.

How Hot Melt Roofing Works

The application of hot melt roofing requires particular equipment and expertise. The advantages this solution brings are far-reaching, making it a desirable choice in construction as its seamless application creates an even monolithic layer that shields the underlying structure from moisture damage.

Its robust adhesion to various substrates combined with heat’s capacity to form a continuous membrane make Hot Melt Roofing an optimal option for long lasting waterproof protection on roofs. Installing this specific kind of product requires specialised gear and knowhow. Paying attention to these particulars pays off considering its unwavering resilience against weather conditions over time.

Heating up the material until desired temperature is reached allows one to use rollers or squeegees when spreading out liquid membranes across surfaces, which subsequently cools down creating tight seals ultimately safeguarding structures beneath them.

Benefits of Hot Melt Roofing


Hot melt roofing is preferred for many types of roofs due to the seamless application that provides a waterproof covering applied straight onto the deck or structure. Its strong adhesion connects with existing components on your roof’s exterior surface and creates an impervious barrier against moisture. Hot melt systems have low maintenance needs as they withstand UV radiation damage plus temperature fluctuations while still maintaining their durability over time in some cases up to 50 years! As a result, it makes this type of waterproof solution much more attractive when compared with conventional methods used in roofing projects. Hot Melt Roofing is definitely worth considering for any required changes you are making to your rooftop surfaces or structures!

Seamless Application and Fully Bonded

Hot melt roofing is a highly beneficial solution, offering seamless application and elimination of the possibility for water tracking. A fully bonded layer provides excellent waterproof protection against any damage or membrane compromise that may occur over time. This kind of seamless approach also helps to create robust monolithic barriers as well as long-lasting dependable waterproofing solutions. Overall, this type of protective coating offers several advantages such as decreased likelihood for leakage and related problems. To increase durability without extra seams, lap joints are needed making hot melt roofing an optimal choice when it comes to reliable waterproof coverage.

Longevity and Low Maintenance

Hot melt roof systems boast a long lifespan, often around 40-50 years on average due to the materials’ ability of withstanding extreme temperatures, UV light and harsh weather conditions. To this extraordinary durability, there are other advantageous traits: minimal maintenance is needed. Just two biannual inspections along with assessments following sudden meteorological events suffice in ensuring continued functionality over time. These hot melt roofs call for significantly fewer repairs than their counterparts due to being highly resilient against everyday climate wear and tear as well as movement from shifts in temperature or sunlight exposure.

Hot Melt Roofing Applications


Hot melt roofing is a very suitable choice for many applications. From new build projects to zero falls and inverted roofs, it offers excellent waterproofing performance along with seamless application capabilities. For such building systems, hot melt provides the ideal solution as it easily accommodates complex layouts and penetrations too. Its ability to work in tandem with various vegetation systems makes this type of roof particularly beneficial when considering green roofs and sustainable practices. Due to fast cure times combined with strong adhesion – on both existing substrates or newly built structures alike – hot melt remains an effective option among all types of builds.

New Build Projects

Hot melt roofing is a dependable and long-lasting waterproof solution used to construct new buildings. It’s versatility provides an ideal choice for numerous build projects, such as tower blocks, offices or residential developments. Not only does it have fast curing times of between 15, 30 minutes per coat, but also has high levels of adhesion working effectively with different substrates like concrete and timber decks even those in green roofs thus offering wide ranging capabilities suitable from the very start construction process.

Zero Falls and Inverted Roofs

Hot melt roofing is the ideal solution for zero falls and inverted roofs, due to its ability to offer a fully bonded seamless waterproof layer. This allows complex layouts with penetrations within the roof area without requiring seam joins or water tracking in case of damage. The result is an incredibly durable and long-lasting system that provides unparalleled protection against moisture.

Despite any potential challenges presented by these types of installation jobs, hot melt has been engineered specifically as an all-inclusive solution for zero fall roofs and inverted structures. With this product on hand, there’s no need to worry about possible leakages caused by weak joints or seams, it truly rises above other choices!

Green Roofs and Environmental Considerations

Hot melt roofing offers superior waterproofing performance and is compatible with varied vegetation systems. Not only is it aesthetically appealing, but also a reliable solution which protects the building’s structure beneath it. To maximize sustainability of green roofs, this membrane provides effective waterproofing to guarantee longevity without costly repairs or replacements down the line during construction time. Hot Melt Roofing promises excellent protection against potential damages for both buildings and their respective green roof systems alike, while adding an additional layer of security across any structures below as well!

Comparing Hot Melt Roofing to Cold-Applied Systems


When making a decision on what roofing system to use for your project, hot melt and cold applied systems present distinctive benefits. Hot melt roofs are more appropriate in cooler temperatures than cold-applied ones, while the latter can be used straight away without having to wait for concrete curing time of 28 days like its hotter counterpart requires. Installation times may vary due to labor requirements. As specialized equipment is needed when working with a hot melt variety, it often necessitates skilled installers. Cold applied systems. Take less effort compared to their opposite number. Thus both types should be taken into consideration depending upon your needs and resources available at the site of installation i..e whether green or damp surfaces exist already or require waiting periods before being set up respectively.

Installation Time and Labor

Hot melt roofing systems tend to require specialized tools and more experienced installers for installing the material since it needs heating. Although this means additional labor, hot melts have a quicker curing time which can be beneficial for construction schedules. Conversely, cold-applied systems are cold-applied systems. Don’t need any special equipment as adhesive or self-adhering membranes are used instead. This could reduce installation demands, but such materials must often be applied in perfect weather conditions. They do allow for application on damp concrete surfaces earlier than other methods of installment.

Waterproofing Performance

When deciding between hot melt and cold-applied roofing systems, a crucial factor to consider is the sustainable waterproofing performance during curing. To the environmental impact of wrapper waste. Hot melt roofs have many advantages such as their monolithic and seamless waterproof system, which leads to dependable reliability that can endure for years. Cold applied roofings are more flexible because they require ambient temperatures. Compared to hot melts, when it comes down to dealing with cracks on substrates, they do not fare quite well over time due in part to potential splits or cracking issues arising from them being weaker than their molten counterparts. While both provide protection against gaps found within material surfaces, towards lasting effectiveness you need look no Than what safe option offered by these sealing agents provides most robustness – hot melt roofs!

Choosing the Right Waterproofing Solution for Your Project


When selecting a waterproofing solution that meets the demands of your project, there are various elements to think about including dimensions and purpose of construction, monetary parameters as well as environmental concerns. Getting advice from experts with expertise in this area is very important for achieving successful results.

It’s key to compare hot melt roofing systems and cold-applied solutions so you can make an educated decision. More than just performance and expenses should be taken into account – it’s necessary to choose one which fits both your needs plus any ecological considerations.

Factors to Consider

When selecting a waterproofing solution, there are essential project requirements to take into account such as the manufacturer’s qualifications and certification, where it will be utilized with respect to climate conditions, level of tightness from water penetration desired. Service life expectancy including total cost of ownership in regards to potential future replacement costs. Environmental considerations must include eco-friendly materials that have recyclability or reusability prospects and minimal effect on the environment at the termination of their use. Installation requires qualified technicians who specialize in different systems combined with extensive knowledge about waterproofing solutions guaranteeing an effective application process which is key when considering all aspects of this specific task/project.

Nationwide Network of Professionals

By collaborating with experts in a wide-reaching network, gaining useful advice and directions for executing hot melt roofing is made possible. UK firms like DANOSA are staffed by certified contractors that strive to adhere to best practices throughout the project management process while achieving timely completion through adherence to quality standards.

For installation purposes, professionals should possess certain qualifications. Including at least three years’ experience working on similar systems along with accreditation in Hot Melt Roofing application as well as being proficient within approved temperature ranges specified per manufacturer or authority approval criteria along with understanding load bearing capacity when attaching it onto roofs decks etc. Having said this, your complete solution exceeds optimal requirements each step of the way without any compromise regarding safety and performance levels achieved every time you initiate a construction featuring such hot melt systems installed into operations.


Hot melt roofing has a wide range of advantages, making it the preferred option for many different types of build projects. Its smooth integration and strong adhesive properties along with its endurance make it an adaptable answer to new builds as well as zero falls and inverted roofs plus green roofs. Although specialised apparatus is needed alongside experienced laborers, its superior waterproof features combined with long life-span makes this solution economically viable in the end. When deciding on what type of watertightness approach will be adopted for any given project, considerations such as environmental effectiveness need to be taken into account while also taking advice from professional experts across the nation so that you get your desired result out of each venture undertaken.

Frequently Asked Questions

What is a hot melt roofing system?

Hot melt systems consist of a seamless and monolithic membrane that is applied as liquid directly to the flat deck prepared for protection against waterproofing. It creates an impermeable layer when covered with appropriate material, making it suitable for use in new build roof constructions.

How thick is hot melt?

Applying Hot Melt in two coats of 3mm thickness is a successful way to guard against water penetration.

Can you insulate a flat roof with an existing roof?

Insulating a flat roof that already exists can be costly and take up considerable time, it is possible to do so. To protect the insulated surface from water damage, waterproofing membranes should be installed over the newly insulate roof.

What is hot waterproofing?

Waterproofing utilizing hot application methods consists of a coating made up of asphalt and modified rubber polymer, reinforced with mineral stabilizers that form one large monolithic membrane on the surface.

What are the components of a hot melt roofing system?

A hot melt roofing system comprises a rubberized asphalt membrane, which is applied hot and has insulation below it along with an adhesive layer. There’s also a vapor barrier for added protection as well as drainage to round out the components of this type of setup.