Technical Services

Roof Surveys

Siltec technical services are fully trained and experienced in the undertaking of roof surveys. Our standard service provides a report on the condition of the existing waterproofing, inclusive of photographs, followed by recommendations for repairs and/or replacement roof coverings. This includes thermal Insulation surveys and revised thermal calculations as required to bring the building up to building regulations. We also offer an enhanced service, which can incorporate noninvasive thermography and/or electronic integrity testing to determine areas of water ingress and extent of damage / moisture within the existing waterproofing system.

Specification Writing & Design Assistance

Siltec technical services provide a full specification service to clients. The correct selection of waterproofing is crucial to longevity and integrity. With access to such an extensive product range, Siltec can offer appropriate specifications for each individual area of a project. Our ability to provide multiple system variants on a single project, covered under one single point of responsibility is a key reason why Siltec are selected as a client’s waterproofing partner. Specifications are available in various formats, the most common being NBS. Clients have access to Siltec standard detail drawings, which can be tailored to suit particular site specific requirements.

Field Technicians

For Siltec premium warranty schemes, our field technicians carry our regular site audits. These audits are to ensure our approved contractors are assisted in ensuring we provide high quality labour to compliment the quality of the waterproofing systems provided. These reports enable progress and quality during the installation process to be tracked, and can be retained for the building manual on completion.


Our knowledgeable staff are always available to provide support to clients, we offer product presentations/technical training and estimating workshops. Our team would be happy to discuss any specific requirements. Generally, our presentations are no more than 1 hour, often over lunch, based on a powerpoint presentation.

Technical Support

The Siltec technical support team are on hand at any stage of the process to provide assistance to clients. Thermal calculations, wind uplift calculations, drainage design considerations, green roofing options, imposed load to roof systems and budget cost analysis are just a few examples of the services on offer, when Siltec are your waterproofing partner.

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Skilled Employees


Getting Started with Our Waterproofing Solutions

Take a look at some of the common questions we get asked by our customers here at Siltec.

Siltec Technical Statement - Standard Roof Falls to Achieve Drainage and Ponding Rainwater

Siltec Technical Statement - Standard Roof Falls to Achieve Drainage and Ponding Rainwater

Siltec Technical Statement - Moisture Content in a Concrete Substate - Feb 2023

Siltec Technical Statement - Silflex Winter Advice - Dec 2022

Siltec Technical Statement - What Signifies a Level Deck...

Siltec Technical Statement - The Use of Additional Plywood or OSB in Warm Roof Deck Design

Siltec Technical Statement - Non-Standard Details and SILTEC Warranty Cover

Flat roofs constructions, including the deck, are subject to external fire spread. When a flat roof construction is tested for its external fire performance (penetration through the roof construction and surface spread of flame), it is classified within the European system as highest BRoof(t4) through to lowest FROOF(t4).

Not all flat roofs can be classified, such as existing roofs. Some do not need to be classified due to their inherent ability to stop external fire spread, such as gravel and paving slab finished inverted roofs and protected roofs, so use is unrestricted.

With tested roofs however, Siltec are proud to have an extensive range of tested systems that can provide the highest BROOF(t4) performance classification for potentially hundreds of flat roof permutations that include single ply, liquid, hot melt, and bituminous waterproofing. This provides our clients with a full range of solutions whilst still complying with HM Government Building Regulations.

Get In Touch

Siltec offer everything a client needs. From initial advice and specification, access to our approved contractor network, design assistance and on site progress reports.