Polyroof Xtraflex Waterproofing System

Approved for use on

Flat Roofs Pitched Roofs 

The product is intended for use in the following situations:

• Waterproofing gutters on flat or pitched roofs
• Weatherproofing penetrations on other details, for roofs and walls such as pipes, rooflights and sunpipes
• roof junction details

The product must not be used in contact with hot pipes or flues

Substrate

Concrete Existing Coatings/Roof Paints Glass Reinforced Polyester Mastic Asphalt Polyurethane Roof Coatings Reinforced Bituminous Membranes Single Ply Membranes - EPDM Single Ply Membranes - PVC Single Ply Membranes - TPO Steel 

Xtrafelt has been assessed for the use on the following substrates:

• Concrete
• Asphalt
• Galvanised Steel
• Reinforced bitumen membranes (including sanded and mineral surfaced felts)
• Glass Reinforced Plastic (GRP)
• Single ply membranes⁽¹⁾
• Previously coated surfaces⁽¹⁾
• Small areas of metal incidental to the roof , eg pipe upstands

1 – The advice of the certificate holder should be sought on compatibility with the system

Durability

25 Years 

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

Installation Requirements

Installation of the systems must only be carried out by installers who have been trained and approved by the Certificate holder.

Fire Safety

When tested to CEN/TS 1187 : 2012, Test 4 and classified to BS EN 13501-5 : 2016, the build-up given in Table 1 of this Certificate, over a substrate of A1 classification to BS EN 13501-1: 2018, 9mm or more thickness and a density of 1000 kg·m^-3 or more, achieved BROOF(t4) for slopes below 10°.

On the basis of data assessed, the system described in section 1.1 will be unrestricted by the documents supporting the national Building Regulations with respect to proximity to a boundary.

The designation and permissible areas of use of other specifications should be confirmed by reference to the requirements of the documents supporting the national Building Regulations.

Reaction to fire

The Certificate holder has not declared a reaction to fire classification to BS EN 13501-1 :

On the basis of data assessed, XtraFlex will be restricted in use under the documents supporting the national Building Regulations in some cases.

In England, the product, when used on walls or on roofs with pitches of greater than 70°, excluding upstands, should not be used less than 1 m from a boundary, on residential buildings more than 11 m in height or on other buildings more than 18 m in height. Restrictions apply on assembly and recreation buildings. These constructions should also be included in calculations of unprotected area.

In Wales, the products, when used on walls or on roofs with pitches greater than 70°, excluding upstands, should not be used less than 1 m from a boundary, or on other buildings more than 18 m in height. Restrictions apply on assembly and recreation buildings. These constructions should also be included in calculations of unprotected area.

In Scotland and Northern Ireland for systems incorporating the products used on walls or on roofs with pitches greater than 70°, excluding upstands, that do not achieve the minimum Class E reaction to fire classification to

BS EN 13501-1: 2018, designers should seek guidance on the proposed use of the product/system from the relevant Building Control Body.