Bauder Limited

Liquitop system Cold Liquid Applied Roof Waterproofing

Manufacturer: Bauder Limited 

Materials: Polyurethane 

The Bauder LiquiTOP System Cold Liquid Applied Roof Waterproofing consists of:

• Bauder LiquiTOP PU Mist Grey and Bauder LiquiTOP PU Dark Grey — a single part (moisture triggered) polyurethane
• Bauder LiquiTOP Glass Fibre Mat — for use as system reinforcement
• Bauder LiquiTOP General Purpose Primer — a one-part primer, for preparing exposed bitumen roofing membranes, and porous asphalt, cementitious and timber substrates where required
• Bauder LiquiTOP PVC Primer — a one-part primer, for preparing PVC single-ply membranes prior to application of the embedment coat
• Bauder LiquiTOP Epoxy Primer — a two-part primer for preparing metal substrates
• Bauder LiquiTOP Reactivation Primer — for preparing Bauder LiquiTOP PU left for more than five days and aged areas under repair prior to the application of new coats.


BBA logo

Number: 20/5789 PS1
Issue date: 14/08/2020

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.


Certified Products

The following products are also covered by the same certification:

  • Downloads

Interested in this product?

Website disclaimer:

“The information contained in this Website is for general information purposes only. The information is provided by manufacturer members and their accreditation certifications and while we endeavour to keep the information up to date and correct, we make no representations or warranties of any kind, express or implied, about the completeness, accuracy, reliability, suitability or availability with regard to information or products. Any reliance you place on such information is therefore strictly at your own risk.

LRWA Is not an accreditation body and does not test products or have a role in determining whether a product or system is fit for purpose. An agrément certificate is only issued for a successful product or system following a detailed assessment including both laboratory testing and inspections by the certificate provider.”