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Cold Applied Liquid Waterproofing

Caltech FCP/FCP-LO

The Caltech FCP Range comprises cold applied, reinforced polyester hybrid waterproofing systems for roofs, balconies and terraces. Installed using a multi-coat application with embedded glass fibre reinforcement, the systems employ a catalyst-controlled cure that delivers consistent curing performance and reduces reliance on ambient temperature and humidity.

The range includes primers, air and vapour control layers (AVCL), warm and non-combustible thermal insulation options, and ancillary components.

The range includes:

  • Caltech FCP Resin, designed for flat roofs, terraces and applications beneath green roof systems and hard landscaping finishes.
  • Caltech FCP-LO Resin, designed for flat roofs, with a low‑odour formulation particularly suited to areas where odour sensitivity and minimising disruption are critical.
  • Cold-applied, no hot works
  • Fast-curing, catalyst-controlled technology
  • Low odour system available
  • Suitable for use on a wide range of construction substrates

The Caltech FCP range cures to form a seamless, fully bonded waterproof membrane that provides durable, long-term waterproofing protection. The liquid-applied formulation can be applied by roller or brush, enabling efficient installation across large surface areas while accommodating penetrations, upstands and other complex details with ease. The cold-applied process eliminates the requirement for hot works, helping to simplify site operations and reduce associated installation risks.

  • New build
  • Refurbishment
  • Cold roofs
  • Warm roofs
  • Inverted roofs
  • Balconies and Terraces
  • Overlay of existing waterproofing systems
  • BBA Certificate No. 22/5988
  • Environmental Product Declaration (EPD) available
  • Classified as BROOF(t4) to BS EN 13501-5 within approved and tested system assemblies
  • Members of the Liquid Roofing & Waterproofing Association

Alumasc provides a comprehensive range of single-source warranties for Caltech FCP, offering coverage for up to 25 years. Installed exclusively by Registered Contractors and underpinned by our extensive project support service, these warranties cover product, workmanship, and design.

BBA Certificates

CAD Details

Product Data Sheets

Safety Data Sheets

System Summaries

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