Proteus Hot Melt®

In the dynamic field of construction, where effective moisture management is essential, the Proteus Hot Melt® system delivers a monolithic waterproofing layer suitable for various roof types. This hot-applied system, certified under British Board of Agrément (BBA) Certificate 22/6186, aligns with UK Building Regulations and provides a bonded membrane for flat roofs, terraces, podiums, and more. Architects, contractors, and property owners can rely on its documented performance for projects requiring consistent waterproofing.

Attributes and Advantages of Proteus Hot Melt®
The system consists of a hot-melt compound, polyester reinforcement mesh, and a mineral-surfaced capsheet, forming a continuous membrane assessed for performance in demanding conditions.

Assessed Performance Characteristics
•    Weathertightness: The system prevents moisture ingress into the building, as evaluated in the BBA Certificate, making it applicable for inverted flat roofs (including zero falls), terraces, podiums, balconies, blue roofs, green roofs, and roof gardens.
•    Fire Performance: When incorporated within specified protected roof constructions, roofs incorporating the system may be unrestricted under Requirement B4(2) of the Building Regulations (England and Wales) and Standard 2.8 of the Building Standards (Scotland), as detailed within BBA Agrément Certificate 22/6186.
•    Wind Uplift Resistance: The system's bond withstands wind loads, with performance tied to the roofing specification's upper layers, as per BBA assessments.
•    Mechanical Resistance: It accommodates limited foot traffic during installation and maintenance, as well as minor structural movements, without damage.
•    Root Resistance: Combined with Proteus Hot Melt® Anti-Root Capsheet, it resists root penetration, supporting green roof applications.
•    Service Life: When protected (e.g., by insulation or ballast), the system maintains waterproofing performance for the service life of the roof system, subject to specification and maintenance, based on British Board of Agrément (BBA) Certificate 22/6186.

Practical Considerations
•    Application Range: Compatible with concrete and timber substrates, allowing use across multiple project elements.
•    Monolithic Structure: The application method minimises potential weak points from seams, as detailed in our installation guides.
•    Installation Efficiency: The pour-and-roll technique supports coverage with controlled material use.

Selecting Proteus Hot Melt® allows integration with roofing designs that meet documented standards.

Quality Assurance and Upkeep
•    Verification: Monitored via site inspections and integrity tests (e.g., flooding).
•    Maintenance: Check twice yearly for blockages or wear, clearing drains and addressing issues with matching materials.
•    Guarantees: Issued on approval by our technical team after installation by certified contractors. Assessment is based on system performance and quality of installation.
 

Compatibility with Inverted Roofs
Inverted roofs position insulation and various finishes above the waterproofing, Proteus Hot Melt® supports this by providing a protected membrane that can accept loads asscoiated with these types of systems. The applied finishes reduce exposure to temperature fluctuations and UV elements.
•    Advantages: Minimises thermal bridging and aids energy performance, with options for ballast or paving.
•    Installation Notes: Apply directly to the deck, then add insulation and filters. Suitable for zero-fall layouts with appropriate drainage.

Integration with Blue Roofs: The Attenu8® System
Proteus Hot Melt® works with the Attenu8® blue roof system for manging stormwater at source.
•    Functionality: A protective membrane shields the building structure from water. A rainwater attenuation system consisting of storage cells collects and stores the rainwater. Specially designed flow restrictors and drainage outlets restrict the flow of water from the storage units to release it slowly from the roof. The discharged water flows at a controlled rate into the urban drainage systems below.
•    Advantages: Provides source control for stormwater at the point of rainfall, helping to manage runoff. Supports effective silt and debris management when outlets and restrictors are regularly inspected and maintained. Ideal in urban developments where space for below-ground attenuation tanks is limited.
•    Flood Management Alignment: In response to climate change (more intense rainfall) and urban development pressure, policies such as the London Plan and local SuDS guidance promote blue roofs as a practical source-control measure. They help developments meet planning requirements for reduced runoff rates, support adaptation of aging drainage infrastructure, and contribute to BREEAM/sustainability targets while using roof space efficiently.
 

Compatibility with Green Roofs: The Pro-Living® Range
Proteus Hot Melt® also pairs with Pro-Living® for vegetated roofs, incorporating sedum, wildflower, or Bio-diverse plant layers.
•    Suitability: Use the Anti-Root Capsheet to prevent root ingress, maintaining membrane integrity under vegetation.
•    Advantages: Contributes to drainage systems, moderates urban temperatures, and supports plant growth as per BS 8217:2005.
•    Applications: Effective for roof gardens handling soil loads.

Training, Assistance, and Assurances
Proteus provides site-based training on substrate assessment, application, and detailing, issuing 24-month certification cards (renewable). This supports compliant installations qualifying for guarantees.

Summary
Proteus Hot Melt® forms a base for different roofing systems, compatible with inverted, blue (Attenu8®), and green (Pro-Living®) configurations. 

For specifications or enquiries, you can reach Proteus Waterproofing at enquiries@proteuswaterproofing.co.uk or call us: 01268 777871.