Paracoat 25+ Roof Waterproofing System
Part of Paracoat 20 Roof Waterproofing System
Manufacturer: Langley Waterproofing Limited
Materials: Polyurethane
The Paracoat 25+ Liquid Applied Roof Waterproofing System consists of:
• Langley Embedment Coat — a single part (moisture triggered) polyurethane for use as base coat
• Langley Top Coat — a single part (moisture triggered) polyurethane
• 225 g·m–2 glass fibre mat — for use as system reinforcement
• Langley PU Primer — a one-part primer, for preparing exposed bitumen roofing membranes and porous asphalt,
cementitious and timber substrates where required
• Langley PVC Primer — a one-part primer, for preparing PVC single-ply membranes prior to application of the embedment coat
• Langley Epoxy Primer — a two-part primer for preparing metal substrates
• Langley Reactivation Primer — for preparing Langley Embedment coat left for more than five days and aged areas
under repair prior to the application of new coats.
Number: 21/5956 PS2
Issue date: 19/11/2021
Approved for use on
Flat Roofs Pitched Roofs
The Paracoat 25+ Liquid Applied Roof Waterproofing System is satisfactory for use on flat and pitched roofs with limited access.
Substrate
Concrete Insulation Boards Mastic Asphalt Metal Mineral Wool Insulation Polyurethane Roof Coatings PUR or PIR Insulation Reinforced Bituminous Membranes Single Ply Membranes - EPDM Single Ply Membranes - PVC Single Ply Membranes - TPO Timber
The systems are for use on substrates of:
• concrete
• asphalt
• bituminous roofing membranes, including mineral surfaced
• steel
• PVC membranes
• existing polyurethane coatings
• plywood in conjunction with a specified carrier membrane
• polyisocyanurate (PIR) foam insulation boards in conjunction with a specified carrier membrane
• mineral wool insulation boards in conjunction with a specified carrier membrane.
Durability
25 Years
Under normal service conditions, the system will provide a durable waterproof covering with a service life of in excess of 25 years.
Installation Requirements
Installation of the system must be carried out only by specialist roofing contractors trained and approved by the Certificate holder.
Fire Safety
When classified in accordance with BS EN 13501-5 : 2016 the following systems achieved a BROOF(t4) classification and so are unrestricted with respect to proximity to a boundary by the
documents supporting the national Building Regulations:
The designation of other specifications should be confirmed by reference to the requirements of the documents supporting the national Building Regulations.
In England and Wales the system, when used in pitches of greater that 70°, excluding upstands, should not be used on buildings that have a storey at least 18 m above ground level and contain: one or more dwellings, an institution, a room for residential purposes (excluding any room in a hostel, hotel or
boarding house), student accommodation, care homes, sheltered housing, hospitals or dormitories in boarding schools.
In Scotland the system, when used in pitches of greater than 70°, excluding upstands, should not be used on buildings that have a storey at least 11 m above ground level.
Certified Products
The following products are also covered by the same certification:
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Downloads
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BBA Certificate – Paracoat 25+ Roof Waterproofing system
Document class :
Document type : Link
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Langley Waterproofing Limited
Lamport Drive
Daventry
NN11 8YH