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Bauder Bakor Hot Melt Inverted Roof System - Hot Applied

Verified by manufacturer 28 days ago

Bauder Ltd Third party certifications:
  • BBA Agrément Certificate

    BBA Agrément Certificate

    Certificate type

  • EPD

    EPD

    Certificate type

Hot liquid applied, inverted, hot melt structural waterproofing roof system suitable for new build and intensive green roof applications and used primarily on concrete decks.

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+44 (0)1473 257671 Website

Application

Suitable for new build and intensive green roof applications and used primarily on concrete decks.

Description

Hot melt, rubberized bitumen roof coating system, inverted. Bakor790-11 hot melt rubberized bitumen roof coating system is suitable for a variety of applications on both new build and refurbishment projects, and can be used in cold and inverted roof scenarios.

 

Bauder Inverted Roof systems should be ballasted/ landscaped to prevent wind uplift and/ or floatation. Type, thickness, weight of landscaping should be agreed with Bauder per bespoke project basis.

 

Bauder Hot Melt Waterproofing is particularly advantageous for protected, inverted, or buried roofs such as green roofs, paved, terraces, podiums, plazas, and car parks. Bauder Hot Melt Waterproofing System can also be specified within Bauder Blue Roof and BioSOLAR situations. 

 

The solution is primarily used for new build projects, but it can also be used in refurbishment situations that require an inverted roof solution. The system is a favourable option when used on insitu and precast concrete structures. Other suitable deck options are masonry, exterior grade plywood, OSB3, composite timber, cement bonded particle board and flat metal sheet.

 

Characteristics of the system:

  • Monolithic waterproofing system – no laps.
  • 100% bond to deck surface.
  • Lasts the lifetime of the roof.
  • Safe2Torch complaint detailing on or near combustible construction materials.
  • Prominent guarantee packages to meet project needs.
  • System variations available to the specifier so that a tailored solution meets the needs of the building.


Verified properties:

  • CCPI Verification 0007700044/1225: this systems CCPI mark provides accuracy of data delivering assurance to specifiers.
  • BBA Certificate 06/4350.
  • Our BBA certified (06/4350) hot melt waterproofing remains the same independent of the choice of insulation or surfacing on the project.
  • Fire testing to BROOF(t4) for external fire exposure on defined permutations of product build up.
  • Suitable for zero falls (no back falls) on the structure.
  • Its durability under normal service conditions will provide a durable waterproofing for the service life of the roof in which it is incorporated.
  • Seamless application provides monolithic waterproofing.
  • Full adhesion to deck restricts lateral water movement.
  • EPD Certification: Bakor 790-11, Bitumen Membranes, BauderROCK, JFRI PREMIUM+, JFRI PREMIUM (300)

General information

Color

Black

Material

Bitumen

Guidance for specification option:

Rubberised bitumen

Shape

Formless

Guidance for specification option:

Hot applied liquid.

Height

-

Manufacturer guidance

6 mm (2 x 3 mm).

Warranty description

-

Manufacturer guidance

Guarantee options could include ‘Product’, ‘Product and Workmanship’ and ‘Product, Workmanship and Design’ Guarantees. All guarantees available for this system are subject to the works being carried out in accordance with the Bauder specification and being installed by a Bauder Approved installer. For full details and further information regarding guarantees and alternative systems please contact a local Bauder Representative or technical@bauder.co.uk.

Uniclass

Ss_30_40_30_42 Liquid-applied inverted roof covering systemsPrimary

CAWS

J31/130 Inverted roof coating

Product range

Liquid-applied roof covering system - Hot Applied

Specification data - Liquid-applied inverted roof covering systems

Preparation

-

Horizontal work

Bauder Polymer Primer.

Guidance for specification option:

A synthetic rubber-based primer, designed specifically to enhance the adhesion of Bauder Hot Melt Waterproofing to difficult surfaces and speed up the total time of installation due to its quick drying time.

  • Before application: All surfaces must be dry, clean and free from dust, dirt, oil, grease and loose material including laitance. Smooth metal to be prepared using a wire brush. Any concrete curing surface treatment should be removed – see Bauder guidance on concrete curing.
  • Application method: Bauder Polymer Primer to be spray, brushed, or roller applied uniformly to all surfaces receiving the new waterproofing, avoiding excessive application. Ponding of the primer is not recommended. The primer shall be thoroughly dry before applying the hot melt rubberized bitumen coating. Allow to dry for a minimum of 30 minutes.
  • Coverage: 4–6 m² per litre, dependent upon substrate porosity.
  • Application temperature: 5–25°C.
  • Drying time: 15–30 minutes.
  • Coats: Fully bond. Allow volatiles to dry off thoroughly between coats.
  • Recoat time if left exposed: Necessary after 24 hours exposure if waterproofing has not yet been applied, to maintain adhesion performance.
  • Caution: Use only outdoors in well ventilated areas or with respiratory apparatus and keep away from all sources of ignition. Take necessary precautions to avoid the solvent vapour from entering the buildings ventilation system.

Manufacturer guidance

Contact manufacturer to confirm substrate suitability if required.

Skirtings and vertical work

As 'Horizontal work'.

Liquid-applied waterproofing

-

Type

Bakor790-11 Hot Melt rubberised bitumen.

Guidance for specification option:

  • Two 3 mm coats.
  • Bakor 790-11 is poured hot onto the deck and spread by a rubber bladed squeegee in two layers at an average thickness of 3 mm nominal for each layer, sandwiching spun bond Bauder Polyester Reinforcement Sheet, to form a monolithic membrane with nominal 6 mm thickness. Application in two layers increases the membranes crack bridging performance, and it can cope with a wider variety of substrate conditions.
  • The hot semi liquid form of the Bakor 790-11 enables it to infill and cover every crack and deviation in the deck to form a very strong 100% bond with the deck. This eliminates the possibility of water being able to track beneath the membrane in the event of mechanical damage. It bonds to sound concrete, brickwork or steel and readily conforms to any surface irregularities, protrusions, corners etc. Bakor 790-11 contains no solvents. There is therefore no curing period; the system is ready immediately to accept whatever surfacing has been specified.
  • It has excellent low-temperature flexibility and bonding characteristics and can be applied in temperatures down to -18°C on to a clean, dry, frost-free surface.

Reinforcement

Bauder Neoprene Reinforcing Sheet.

Guidance for specification option:

  • Bauder Neoprene Reinforcing Sheet is used as a reinforcement within the Bauder Bakor 790-11 monolithic membrane system. Bauder Neoprene Reinforcing Sheet bedded between the two layers of hot applied Bakor 790-11 membrane is used to provide extra reinforcement at differing materials i.e. metal outlet flanges and concrete, expansion joints, etc. The neoprene's flexibility and elongation characteristics greatly strengthen the system at these vulnerable points.
  • It is installed 75 mm on horizontal and 75 mm vertically between the first and second 3 mm layers (minimum) of Bakor 790-11.

It is also used to bridge cracks above 3 mm in concrete decks and to reinforce and waterproof movement joints.

  • Material: Uncured neoprene.
  • Width: 150 mm, 450 mm, 600 mm, 900 mm.
  • Length: 30.48 m.
  • Weight: 11.36 kg/m², 27.73 kg/m², 29.55 kg/m², 60 kg/m².

Bauder Polyester Reinforcement Sheet.

Guidance for specification option:

  • Bauder Polyester Reinforcement Sheet is an unsaturated, spun bonded polyester mat for use within Bakor Hot Melt waterproofing systems.
  • Bauder Polyester Reinforcement Sheet is lightly brushed into the first 3 mm layer (minimum) of Bakor 790-11 Hot Melt Waterproofing to ensure complete embedment prior to the second 3mm layer (minimum) of Bakor 790-11 Hot Melt Waterproofing.
  • Overlaps should be at least 75 mm.

Bauder Polyester Reinforcement Sheet should be encapsulated with 790-11 at the end of the working day.

  • Width: 1.016 m.
  • Length: 182.88 m.
  • Thickness: 0.2 mm.
  • Weight: 9.5 kg/roll.

Insulation

-

Type

Bauder JFRI PREMIUM+ Inverted Insulation.

Guidance for specification option:

Insert required thickness, 85–240 mm in 5 mm increments.


Designed specifically for inverted roof applications.

  • Type: High-performance, rigid expanded polystyrene (EPS) insulation boards.
  • Facing: Unfaced.
  • Colour: Grey.
  • Nominal weight: 30 kg/m³.
  • Standard board size: 1215 x 1215 mm (including 15 mm rebate).
  • Thermal conductivity: Declared 0.031 W/m·K; design 0.031 W/m·K (may vary, dependent on thickness specified).
  • Design load compressive strength: 0.20 N/mm² with 10% nominal compression.
  • Ozone depletion potential (ODP): Zero.
  • Global warming potential (GWP): <5 kg CO2 Eq./kg.
  • Recyclability: 100%.


Consult manufacturer's literature for further details.

Bauder JFRI PREMIUM (300) Inverted Insulation.

Guidance for specification option:

Insert required thickness, 90–240 mm in 5 mm increments.


Designed specifically for inverted roof applications.

  • Type: High-performance, rigid expanded polystyrene (EPS) insulation boards.
  • Facing: Unfaced.
  • Colour: White.
  • Weight: 40 kg/m³.
  • Standard board size: 1215 x 1215 mm (including 15 mm rebate).
  • Thermal conductivity: Declared 0.033 W/m·K; design 0.033–0.035 W/m·K (may vary, dependent on thickness specified and application).
  • Design load compressive strength: 0.30 N/mm² with 10% nominal compression.
  • Ozone depletion potential (ODP): Zero.
  • Global warming potential (GWP): <5 kg CO2 Eq./kg.
  • Recyclability: 100%.


Consult manufacturer's literature for further details.

Bauder XPS (300) Inverted Insulation Flatboard.

Guidance for specification option:

Insert required thickness.


  • Type: High performance rigid extruded polystyrene insulation boards.
  • Facing: Smooth self-finished.
  • Density: 30 kg/m³.
  • Standard board size: 1250 x 600 mm.
  • Board thickness: 30 mm, 40 mm, 50 mm, 60 mm, 70 mm, 80 mm, 100 mm, 120 mm, 140 mm.
  • Thermal conductivity: 30 mm: 0.034 W/m·K; 40–50 mm: 0.035 W/m·K; >50 mm: 0.036 W/m·K.
  • Compressive strength: 0.30 N/mm².
  • Ozone depletion potential (ODP): Zero.
  • Global warming potential (GWP): <1 kg CO2 Eq./kg.

Bauder XPS (500) Inverted Insulation Flatboard.

Guidance for specification option:

Insert required thickness.


  • Type: High performance rigid extruded polystyrene insulation boards.
  • Facing: Smooth self-finished.
  • Density: 35 kg/m³
  • Standard board size: 1250 x 600 mm. Standard board size: 1250 x 600 mm.
  • Board thickness: 40 mm, 50 mm, 60 mm, 70 mm, 80 mm, 100 mm, 120 mm, 140 mm.
  • Thermal conductivity: 40–60 mm: 0.034 W/m·K; >60 mm 0.036 W/m·K.
  • Compressive strength: 0.50 N/mm².
  • Ozone depletion potential (ODP): Zero.
  • Global warming potential (GWP): <1 kg CO2 Eq./kg.

BauderGLAS Inverted Insulation.

Guidance for specification option:

Insert required thickness.


  • Type: Cellular glass with pre-applied inorganic coating on the topside. Both the core material and the coating have an A1 reaction to fire classification and are therefore non-combustible. Where more than 1 layer of insulation is required, BauderGLAS Slab T3+ will be used as the base layer.
  • Facing: Pre-applied inorganic coating.
  • Density: 100 kg/m².
  • Standard board size: 600 x 450 mm.
  • Board thickness: 100 mm, 120 mm, 140 mm, 160 mm, 180 mm, 200 mm.
  • Board thickness (base layer): for thicknesses over 200 mm, refer to BauderGLAS Slab T3+ product for information for the base board of insulation.
  • Thermal conductivity: 0.043 W/m·K.
  • Compressive strength: 0.4N/mm².
  • Ozone depletion potential (ODP): Zero.

Fixing

Loose laid (and suitably ballasted).

Guidance for specification option:

  • Setting out: Loose lay insulation directly over the capping sheet to brick pattern with staggered joints. Minimize cutting and avoid small pieces at perimeters and penetrations. Dependent upon the total thickness required, it may be necessary to construct the insulation using two layers of board. The manufacturer/supplier can advise on the available combination options.
  • Joints: Butt together.
  • Loading over inverted insulation (minimum): Ballast (landscaping) should be installed onto the Bauder WFRL Membrane (Water Flow Reducing Layer) to a minimum depth required to achieve a permanent minimum 80 kg/m² and load which prevents wind uplift and flotation of the insulation in high winds and/or heavy rainfall.
  • Additional loading at perimeters: On high buildings in more exposed areas, wind uplift may be a problem and in these instances paving slab ballast must be considered. Paving slabs should be a minimum of 50 mm thick. The slabs should be laid on paving slab supports of minimum 175 mm diameter (or equivalent base area).
  • All final details must to be confirmed with Bauder before proceeding.

Ballast

Landscaping/ Ballast options.

Guidance for specification option:

Consult manufacturer for further details.

System accessories

Not required.

Bauder Aluminium Termination Bar.

Guidance for specification option:

Natural finish aluminium (25 x 6 mm flat plate) used at upstand details to give protection to the top edge of the waterproofing. Usually covered by a metal/ lead counterflashing. It should be restricted to use on upstands where a chase cannot be cut into the wall.

Bauder GRP Termination Bar.

Guidance for specification option:

Black glass reinforced plastic (GRP) alternative to a lead counterflashing for use at upstand details to give protection to the top edge of the waterproofing. It should be restricted to use on upstands where a chase cannot be cut into the wall.

Bauder Hot Melt Compact – Vertical Outlet (DN100).

Guidance for specification option:

A thermally insulated rainwater outlet with vertical spigot designed for use when connecting to conventional gravity drainage systems, giving thermal continuity and excellent flow rate performance.

The high thermal value of the rigid foam body prevents condensation from forming on the underside of the outlet body.

The integrated screw down clamping ring and neoprene gaskets ensure total waterproofing security between the waterproofing system and the outlet.

Manufactured as a one-piece rigid polyurethane (PUR) foam body that forms the integral sump and spigot. It is manufactured with pre cast studs to receive the fasteners of the clamping ring. This ensures full mechanical sealing between the outlet unit and the Hot Melt Waterproofing and Protection Sheet. A tough, but lightweight, polyamide domical leaf grille permits free flow of water, whilst preventing leaf litter or other debris from entering the outlet. This push fit grille is easily removed to allow for maintenance.

A core hole of 250 mm diameter must be cut in the roof deck to accommodate the outlet. In all cases, during installation, the outlet body must be mechanically fixed to the deck.

Hot Melt Compact – Insulated Vertical Outlets are suitable for connection to:

  • 110 mm PVC-U “O” ring socketed soil grade pipe to BS 4514: 1983.
  • Socketed and socket-less cast iron pipework to BS 416: 1973 and EN 887.
  • Socketed pipework will require cold caulking or PVC to cast iron adaptors. Socketless pipework can be connected using an appropriate SML mechanical coupling.
  • PE-HD pipework with appropriate SML mechanical coupling BS EN 12056-3: 2000 Flow rates (L/s).

Flow rate figures (where applicable) are based on BS EN 12056:3: 2000, typically taken using a 35 mm header of water including leaf grille, which for the Hot Melt Compact – Insulated Vertical Outlet gives a flow rate performance of 6.1 L/s.

Bauder Parapet Emergency Overflow Stainless Steel DN70.

Guidance for specification option:

Provides a visible overflow for water build up at roof level. Can be used as part of a Bauder Blue Roof solution.

The overflow opening should be positioned approx. 35 mm above the lowest point of the waterproofing or impermeable landscape finish. For Blue Roofs, the bottom of the overflow opening should be positioned level with the top of the H-Max. It is used in conjunction with other roof drainage outlets to ensure that there is no water ingress into the building and that the structural load of the roof is not exceeded and provides a visible warning that the roof is holding excessive water.

They are not suitable or intended for connection to internal pipework that is within a wall construction or boxed in and is inaccessible after construction.

Bauder rooflights/ glazing/ ventilation.

Guidance for specification option:

All these glazing products are fully compatible with the roof waterproofing systems. Consult manufacturer for details and insert requirements.

  • BauderDOME Rooflight.
  • Bauder Euroglaze Rooflight.
  • Bauder Special Modular Rooflight.
  • Bauder Continuous Rooflight.
  • Bauder Walk-on Rooflight.
  • Bauder Direct Glazing.
  • Bauder AOV.
  • Bauder Modular Link Glazing.
  • Bauder Structural Rooflight.
  • Bauder Fire Rated Rooflight.

Minimum dry film thickness

6 mm (2 x 3 mm).

Coating protection layer

AP1.

Guidance for specification option:

Glass reinforced, modified bitumen, sanded surface bituminous membrane, 1.5 mm thick. Used as an access sheet when bedded into the second layer of the Bakor 790-11 hot melt monolithic system.

No UV protection, only suitable for applications where it is totally covered; not for exposed roofs. Not for use with green roof systems.

  • Width: 1 m.
  • Length: 20 m.
  • Thickness: 1.5 mm.
  • Weight: 1.8 kg/m².
  • Surface: Top and bottom: Fine sand.
  • Reinforcement: 60 g/m² glass.
  • Tensile strength: Length 450 N/50mm; transverse 320 N/50mm.
  • Elongation at break: 2.5%.

BauderPLANT E 42.

Guidance for specification option:

Heavy duty SBS elastomeric root resistant bitumen capping sheet, 4.2 mm thick. Used as an access/protection sheet to be rolled into the second layer of Bakor790-11 hot melt rubberised bitumen coating while it is hot, to ensure a full bond. The product features chemically treated bitumen to deliver superior root resistance which has been tested and approved by the FLL. The membrane is reinforced with 250 g/m² spunbond polyester fleece to allow the finished product to cope with structural movement without fracture. For use with green roof systems.

  • Width: 1 m.
  • Length: 7.5 m.
  • Thickness: 4.2 mm.
  • Weight: 5 kg/m².
  • Surface: Top: Green slate mineral chippings; Bottom: Thermofusible polyethylene.
  • Reinforcement: 250 g/m² recycled spunbond polyester.
  • Cold bending test: -36°C.
  • Softening point: >120°C.
  • Tensile strength: Length >1000 N/50mm; transverse >1000 N/50mm.
  • Elongation at break: Length >45%; transverse >45%.

AP3.

Guidance for specification option:

AP3 Protection Board is a pre-fabricated board made from a mixture of fibres saturated with at least 75% bitumen. It is completely waterproof and provides superior impact and abrasion resistance. It is ideal for horizontal and vertical applications. Both sides of the product are smooth surfaced covered both sides by a polyethylene film.

The boards should be installed as per specification. Generally loose laid with staggered, sealed 100 mm laps. Laps may need be taped in certain situations using heavy duty bitumen tape.

  • Width: 1 m.
  • Length: 2 m.
  • Thickness: 3.1/ 6.1 mm.
  • Weight: 4.09/ 8.34 kg/board.

K4E.

Guidance for specification option:

High performance, elastomeric bitumen, mineral finished, capping sheet, 4.2 mm thick. Used as an access/protection sheet to be rolled into the second layer of Bakor790-11 hot melt rubberised bitumen coating while it is hot, to ensure a full bond. Expandable graphite fire retardant is also incorporated to reduce spread of flame when used on exposed flashings and the product is available in a choice of colours. Not for use with green roof systems.

  • Width: 1 m.
  • Length: 7.5 m.
  • Thickness: 4.2 mm.
  • Weight: 5.5 kg/m² (Charcoal Grey); 5 kg/m² (Natural Slate, Brown).
  • Surface: Top mineral chippings.
  • Bottom: Thermofusible polyethylene.
  • Reinforcement: 250 g/m² spunbound polyester.
  • Cold bending test: -30°C.
  • Softening point: >110°C.
  • Tensile strength: length >800 N/50mm; transverse >800 N/50mm.
  • Elongation at break: length >40%; transverse >40%.

K5E FBS.

Guidance for specification option:

Heavy duty, elastomeric bitumen, mica finished capping sheet, 5 mm thick. Used as an access sheet to be rolled into the second layer of Bakor790-11 hot melt rubberised bitumen coating while it is hot, to ensure a full bond. Its mica finish means that it has no integrated UV protection, therefore only suitable for applications where it will be covered with inverted insulation or hard landscaping such as pavers or promenade tiles. Not for use with green roof systems.

  • Width: 1 m.
  • Length: 5 m.
  • Thickness: 5 mm.
  • Weight: 5.8 kg/m².
  • Surface: Top: Mica; Bottom: Thermofusible polyethylene.
  • Reinforcement: 250 g/m² recycled spunbond polyester.
  • Cold bending test: -30°C.
  • Softening point: >110°C.
  • Tensile strength: Length >800 N/50mm; transverse >800 N/50mm.
  • Elongation at break: Length >40%; transverse >40%.

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Water Flow Reducing Layer/ Vapour Permeable Membrane

Bauder JFRI WFRL.

Guidance for specification option:

Flexible and breathable sheet of polypropylene strands randomly spun-bound together, supplied as part of the JFRI Inverted Insulation system. Supplied as part of the JFRI Inverted Insulation system to minimize water flow through and below the insulation.

  • Width: 3 m.
  • Length: 100 m.
  • Thickness: 0.45 mm.
  • Weight: 0.1 kg/m².
  • Colour: Black.

Bauder XPS WFRL.

Guidance for specification option:

Flexible and breathable geotextile membrane of polypropylene strands randomly spun-bound together, supplied as part of the Bauder XPS GG Inverted Insulation system. Supplied as part of the XPS GG Inverted Insulation system to minimize water flow through and below the insulation.

  • Width: 3 m.
  • Length: 100 m.
  • Thickness: 0.17 mm.
  • Weight: 0.06 kg/m².
  • Colour: White.

Manufacturer guidance

Designed to minimize water flow through and below the insulation, therefore improving thermal performance.

Sustainability data

BIM objects

BOS

NBS BIM Object Standard

This BIM object has been authored to meet the requirements of the NBS BIM Object Standard.

Find out more about the NBS BIM Object Standard.

Platform Compatible Version
Revit
-

2

IFC
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1

Third party certifications

BBA Agrément Certificate

BBA Agrément Certificate

Certificate: Hot Melt Waterproofing Systems 06/4350

EPD

EPD

Environmental Product Declaration - Bakor 790-11 Hot Melt System

EPD

EPD

Environmental Product Declaration - RBM

EPD

EPD

BREGENEPD000395 - EPD JFRI PREMIUM (300)

EPD

EPD

BREGENEPD000394 - EPD - JFRI

EPD

EPD

Environmental Product Declaration - Rockwool

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