Alchimica Building Chemicals

Alchimica Hyperdesmo

Manufacturer: Alchimica Building Chemicals 

Materials: Polyurethane 

The Certificate holder provided the following description for the system under assessment. Hyperdesmo, a liquid-applied, moisture activated
polyurethane for use on new and existing flat and pitched
roofs with limited access.


BBA logo

Number: 18/5567
Issue date: 28/08/2018

ETA logo

Number: 04/0082
Issue date: 19/01/2015

Approved for use on


Blue Roofs Flat Roofs Green Roofs Pitched Roofs Protected Roofs Roof Gardens Zero Falls Buried Roofs 

The system is intended for use as a waterproofing layer on new or existing flat and pitched roofs with limited access.

 

Substrate


Concrete Fibre Cement Mortar 

The system is suitable for use on:

Concrete
Mortar
Fibre Cement

Surface Temperature Application


The system must be applied when the air and substrate temperature are greater than 5°C. The advice of the
Certificate holder should be sought where air temperatures exceed 35°C.

Durability


25 Years 

Under normal service conditions, the system will have a service life of at least 25 years provided it is designed, installed and maintained in accordance with this Certificate and the Certificate holder’s instructions.

Where the system is used in a fully protected specification and is subjected to normal service conditions, it will provide an effective barrier to the transmission of liquid water and water vapour for the design life of the roof in which it is incorporated, provided it is designed, installed and maintained in accordance with this Certificate and the Certificate holder’s instructions

Installation Requirements


Practicability of installation was assessed by the BBA on the basis of Certificate holder’s information. To achieve the performance described in this Certificate, the system must only be installed by contractors who have been trained and approved by the Certificate holder.

Fire Safety


Data were assessed for the following characteristics:
When tested to CEN/TS 1187 : 2012 : Test 4 and classified in accordance with BS EN 13501-5 : 2016,
a system comprising a 8 mm fibre cement board, a base coat of Hyperdesmo and a top coat of
Hyperdesmo reinforced with geotextile (134 g/m2), achieved a classification of BROOF(t4).

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Alchimica Building Chemicals

Unit 2 Dairy Park
Spring Gardens
Whitland
SA34 0NH

T : 01437 563564

E : info@alchimica.co.uk

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