Construction
High-performance, bespoke foam products for demanding building applications
From precision expansion joint seals to advanced insulation and protective foam components, Kewell Converters have supported construction professionals for over 50 years, who need high-quality foam materials that perform reliably in the most demanding environments.
Unlike many foam suppliers, Kewell Converters focuses exclusively on foam which means we understand the properties, tolerances and capabilities of every foam grade better than anyone else. Combined with our in-house CAD design and extensive engineering expertise, we provide construction partners with manufactured foam solutions that improve performance, reduce supply chain complexity and deliver long-term value.
Foam conversion expertise for construction
Our engineering team works with specialty foams including Plastazote®, Evazote®, and ZOTEK® to create custom foam parts that deliver measurable benefits in building and infrastructure projects. Applications include:
Expansion joints
Evazote® closed-cell EVA foams are widely used in bridges, stadia and concrete structures. Their elasticity (up to 50% compression and 25% tension) and resistance to road salts prevent extrusion and extend service life.
Eaves fillers & ridge sealing
Plastazote® foams have been trusted for over 30 years in sealing and insulation, eliminating draughts, deterring wildlife and maintaining durability in exposed conditions.
Pipe & panel insulation
Plastazote®, Evazote®, Ecozote®, and ZOTEK® F PVDF foams provide outstanding thermal insulation, moisture resistance and chemical stability. Their mouldability makes them ideal for specialist sheathing, valve insulation jackets and cleanroom pipe systems.
Seals, gaskets & tapes
Our closed-cell foam tapes resist moisture ingress, adapt to thermal expansion of dissimilar materials and provide long-term sealing performance superior to EPDM alternatives.
Sports & flooring systems
Evazote® foams offer reliable compression stress resistance, making them suitable for sports flooring and other impact-absorbing applications where safety and comfort are critical.
Meeting the highest standards
In construction, compliance and reliability are everything. Our high-quality foam materials are tested to international standards, including:
- DIN 4102 B1/B2 for fire resistance
- ASTM E-84 / UL 723 surface burning characteristics
- EN ISO 11925-2 & EN 13823 Euroclass B flame performance
- FM 4910 cleanroom certification for ZOTEK® F42 HT LS
By working with Kewell Converters, you gain a partner who understands not only foam properties but also the regulatory requirements that safeguard people, assets and reputation.
Why construction leaders choose Kewell Converters
- 50 years of foam-only expertise – unrivalled specialisation in engineered foam solutions
- In-house CAD design & engineering – optimising performance, efficiency and cost
- Supply chain management – from sourcing and design to finished components, reducing supplier complexity
- Proven durability – foams that withstand UV, chemicals, petroleum products, moisture and extreme temperatures
- Custom solutions at scale – whether one-off prototypes or high-volume runs, every part is manufactured with precision
Let’s build better with foam
If you’re a supply chain manager looking for bespoke foam solutions that save time, reduce risk and improve long-term performance, Kewell Converters is ready to help.
Get in touch today to discuss your project requirements with our engineering team.
FAQs
Evazote® closed-cell EVA foams are widely used for expansion joints thanks to their high elasticity, chemical resistance and ability to withstand road salts and debris without material extrusion.
Yes. Azote® and ZOTEK® foams provide excellent thermal insulation, moisture resistance and sound-deadening properties, making them ideal for pipe insulation, sandwich panels and specialist roofing applications.
Our foams are tested to international standards including DIN 4102 (B1/B2), ASTM E-84 / UL 723, and EN ISO 11925-2 & EN 13823 Euroclass B. This ensures our materials meet strict building fire performance requirements.
Plastazote® foam eaves fillers have been used for over 30 years to eliminate draughts, keep out wildlife and provide long-term durability in exposed environments. They are lightweight, non-toxic and resistant to UV aging.
Yes. With in-house CAD design and advanced foam conversion techniques, we create bespoke foam components, from seals and gaskets to insulation panels, tailored to your exact specifications and regulatory needs.
