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


BBA Certificate No. 11/4816.

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

BBA CertificationNBS 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



Contact us