Preserving the past, protecting the future with mastic asphalt
Heritage and listed buildings demand the highest-quality construction materials to ensure they are protected for future generations, while respecting their unique legacy. These historical buildings draw in millions of visitors from across the globe, contributing to important educational, economic and social benefits.
Mastic asphalt has been a tried, tested and trusted choice in the roofing industry for centuries. Because of its durability, it provides a long and robust design life that meets growing sustainable demands.
Composed primarily of bitumen, limestone filler and aggregate, IKO Permaphalt, our mastic asphalt roofing solution, is applied in a molten state, which allows it to be moulded to fit any shape, contour or detail, creating a seamless, monolithic finish.
Its appealing aesthetic, coupled with its long-term durability, makes mastic asphalt the go-to choice for protecting the UK’s most historically significant buildings – frequently specified by the National Trust and English Heritage, among others.
We’re proud that IKO Permaphalt mastic asphalt solutions have been specified by high-profile projects, including Battersea Power Station, the Tower of London, Westminster Cathedral, and St Paul’s Cathedral.
Preserve history with IKO Permaphalt
Designed to meet modern technological standards, IKO Permaphalt uses advanced polymer technology for superior temperature stability, flexibility, and fatigue resistance: ideal for roofing restoration projects.
Why choose IKO Permaphalt?
- BBA certification and a 20-year guarantee.
- Traditional application techniques by IKO Approved & Registered Contractors.
- Track record for long-term durability.
- Environmental credentials.
- Waterproofing versatility.
IKO in action: Keble College
Keble College, one of the largest and most prestigious colleges at the University of Oxford, sought to renovate the roof of its student bar. To ensure aesthetic continuity, the college opted to use mastic asphalt, which is consistent with the material used on the roof previously.
Find out how the asphalt was painted with white solar paint to reflect sunlight onto the higher-level windows by reading our case study.
The project’s environmental credentials were also enhanced through the implementation of a green roof, whilst maintaining the use of traditional mastic asphalt.
Driving decarbonisation: Our commitment to net zero
As a responsible UK manufacturer dedicated to preserving historic structures and advancing sustainability, we’re committed to a net zero future.
We’ve set bold targets in reducing Scope 1 and 2 emissions by 42% by 2030, and achieving a 90% reduction across Scopes 1, 2, and 3 by 2050. These targets are aligned with climate science and the Science Based Targets initiative.
The launch of IKO Permaphalt LI marks a pivotal milestone, delivering innovative, high-performance solutions that dramatically cut embodied carbon.
From sourcing local raw materials and maximising energy efficiency to reducing manufacturing emissions and minimising packaging waste, every step we take is designed to protect what matters and create a lasting positive legacy.
Choosing mastic asphalt for your heritage projects can help meet your sustainability goals through:
- Reduced embodied carbon.
- Locally sourced raw materials.
- Less waste with zero waste packaging (when ordered in block form).
- Improved pollution control as less heat and energy used.
- Production efficiencies - complete supply chain control.
- UK-based manufacturing.
With better collaboration and transparency across the supply chain, together we can reduce our collective carbon footprint and drive sustainable change in construction.
Speak to an expert
Want to find out how IKO can help with your next heritage project? Book a meeting with an IKO expert!
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