Spray Foam Insulation

External roof insulation

ELASTOSPRAY can be applied to the external surfaces of corrugated and profiled roof cladding. The in-situ application overcomes problem areas such as cracked roofing sheets and glazing, perished fixing bolt seals and gaps in the sheeting.

This practical way of insulating and weatherproofing a commercial building roof, provides a lightweight solution to condensation problems without disruption to production within the premises.

In these situations the ELASTOSPRAY needs to be provided with UV protection via a recommended membrane coating.

  • Simple, seamless insulation of critical areas
  • Suitable for virtually all substrate
  • Economic due to ‘fast track’ installation
  • Lightweight
  • Adapts to any profile without gaps
  • High compressive strength for occasional foot traffic


WALLTITE has undergone various performance tests. Certificates are available on request.

LABC RegisteredNBS Plus

Typical detail

External industrial roof

External industrial roof

  1. ELASTOSPRAY insulation to achieve target U-value
  2. Metal deck
  3. Roof beams

Technical data

Density > 42kg/m3
Compressive strength 240kPa
Reaction to fire E


Thickness of ELASTOSPRAY (mm) U-value (W/m2k)
135 0.18
100 0.25
50 0.46

Additional resources

Case studies

Other downloads



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