Illbruck TP450 Compriband Timber Max

TP450 is a soft and flexible open cell polyurethane foam, impregnated with an acrylic based, UV stabilised resin. It provides a weather tight seal against the most severe combinations of wind & rain.


TP450 provides a weather tight seal against the most severe combinations of wind and rain, with particular suitability for sealing the head and sills of windows installed in timber frame construction and can accommodate up to 37 mm of differential movement within a max. 50 mm wide joint. Extensively tested with BBA accreditation, TP450 has a proven reputation across both the UK and Europe.


  • Minimum 450 Pa weather resistance, 600 Pa with the three smaller sizes, to DIN EN 1027
  • Accommodates up to 37 mm of joint movement within a maximum 50 mm wide gap
  • Weather seal for wind-driven rain but breathable for vapour diffusion
  • Can accommodate differential movement on timber frame construction up to 5 storeys
  • Seals effectively – no remedial visits or wet sealants
  • Continually expands and contracts to accommodate movement whilst still sealing the joints
  • Long life expectancy

Technical data

Property Test Method Result
Material Polyurethane cellular foam, impregnated with a modified flame retardant artifical resin
Building Classification  DIN 4102 Impregnated with a modifed flame retardent artifical resin B1, self extinguishing, P-NDS 04-229
Thermal Conductivity DIN 52612 λ 10 < 0.055 W/m.K
Vapour Resistivity DIN 52615 μ < 100
Weathering Test DIN 53387 The requirements of the DIN standards are met
Weathertight Against Driving Rain En 86/ DIN 52453 The requirements of the DIN standard are met up to the described joint sizes, giving a minimum of 450 Pa, independently supervised by MPA Hannover.
Compatibility with Conventional Construction Methods DIN 52453 No Signs of corrosion observed on iron, zinc, steel, galvanised steel, aluminium and copper. No adverse effects with concrete, aerated concrete, brick, some stones, PVC, Plexiglas or timber.
Service Temperature -30°C to +90°C
Storage Store rolls horizontally between +1°C and +25°C in dry conditions and away from direct sunlight. Re-Seal packaging between use to prevent expansion during storage.
Shelf Life 2 years when stored in its original unopened containers.

Usage Guidelines

Tape Specification

  • The tape should be selected so that the roll width (joint depth) is at least equal to the tape thickness (joint width) in service. For applications outside of this instruction, please consult our sales office.

To learn about systems to assist with issues arising from Differential Movement over time when sealing window and door perimeters in Timber Frame Construction buildings please see the attached document by  Clicking Here

Impregnated Foam Tapes Application Instructions

BBA 12-4891 PS5 re TP450 Compriband Timber Max 



ECT Adhesive Solutions, Unit 5, Willsborough Industrial Estate, Clonshaugh Business and Technology Park, Dublin 17, Ireland

+353 1 885 0000