Liquitop system Cold Liquid Applied Roof Waterproofing

Approved for use on

Flat Roofs Pitched Roofs 

For use on flat and pitched roofs with limited access.

Substrate

Concrete Insulation Boards Mastic Asphalt Mineral Wool Insulation PUR or PIR Insulation Reinforced Bituminous Membranes Single Ply Membranes - PVC Steel Timber 

• 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

20 Years 

Under normal service conditions, the system will provide a durable waterproof covering with a service life of at least 20 years.

Installation Requirements

Installation of the Bauder LiquiTOP System Cold Liquid Applied Roof Waterproofing must be carried out only by specialist roofing contractors trained and approved by the Certificate holder, in accordance with the relevant clauses of BS 8000-0 : 2014, BS 8000-4 : 1989, Liquid Roofing and Waterproofing Association (LRWA) Note 7 – Specifier Guidance for Flat Roof Falls the Certificate holder’s instructions and this Certificate

Fire Safety

When classified in accordance with BS EN 13501-5 : 2016, the following systems achieved a BROOF(t4) classification:
• a 18 mm thick orientated strand board (OSB) substrate, a 1.5 mm thick carrier membrane (self-adhesive, foilfaced, modified bitumen), a layer of Bauder LiquiTOP PU applied at 1.0 ℓ·m–2(1.5 kg·m–2) with 225 g·m–2 glass fibre mat embedded and Bauder LiquiTOP PU applied at 1.0 ℓ·m–2(1.5 kg·m–2), tested flat(1)
• a 18 mm thick OSB substrate, 1.5 mm thick air and vapour control layer (AVCL) (self-adhesive, foil-faced, modified bitumen), a bonded 60 mm thick foil-faced polyisocyanurate (PIR) insulation board, a 1.5 mm thick carrier membrane (self-adhesive, foil-faced, modified bitumen), a layer of Bauder LiquiTOP PU applied at 1.0 ℓ·m–2(1.5 kg·m–2) with 225 g·m–2 glass fibre mat embedded and Bauder LiquiTOP PU applied at 1.0 ℓ·m–2 (1.5 kg·m–2), tested flat(1)
• a 18 mm thick OSB substrate, 1.5 mm thick AVCL (self-adhesive, foil-faced, modified bitumen), a bonded 240 mm thick foil-faced PIR insulation board, a 1.5 mm thick carrier membrane (self-adhesive, foil-faced, modified bitumen), a layer of Bauder LiquiTOP PU applied at 1.0 ℓ·m–2 (1.5 kg·m–2) with 225 g·m–2 glass fibre mat embedded and Bauder LiquiTOP PU applied at 1.0 ℓ·m–2 (1.5 kg·m–2), tested flat(1)
• a 18 mm thick OSB substrate, a 1.5 mm thick carrier membrane (self-adhesive, foil-faced, modified bitumen), a layer of Bauder LiquiTOP PU applied at 1.0 ℓ·m–2 (1.5 kg·m–2) with 225 g·m–2 glass fibre mat embedded and Bauder LiquiTOP PU applied at 1.0 ℓ·m–2 (1.5 kg·m–2), tested on a slope(2)
• a 18 mm thick OSB substrate, 1.5 mm thick AVCL (self-adhesive, foil-faced, modified bitumen), a bonded 60 mm thick foil-faced PIR insulation board, a 1.5 mm thick carrier membrane (self-adhesive, foil-faced, modified bitumen), a layer of Bauder LiquiTOP PU applied at 1.0 ℓ·m–2 (1.5 kg·m–2) with 225 g·m–2 glass fibre mat embedded and Bauder LiquiTOP PU applied at 1.0 ℓ·m–2 (1.5 kg·m–2), tested on a slope(2)
• a 18 mm thick OSB substrate, 1.5 mm thick AVCL (self-adhesive, foil-faced, modified bitumen), a bonded 240 mm thick foil-faced PIR insulation board, a 1.5 mm thick carrier membrane (self-adhesive, foil-faced, modified bitumen), a layer of Bauder LiquiTOP PU applied at 1.0 ℓ·m–2 (1.5kg·m–2) with 225 g·m–2 glass fibre mat embedded and Bauder LiquiTOP PU applied at 1.0 ℓ·m–2 (1.5 kg·m–2), tested on a slope(2)

(1) The test is applicable to systems applied to roofs of pitches between 0 to 10°.
(2) The test is applicable to systems applied to roofs of pitches between 10 to 70°.

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

The system, when used in pitches of greater that 70°, excluding upstands, should not be used on buildings in England and Wales 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.