When do I use an external corner?

Wherever the membrane wraps around the outside of a 270° corner – step-downs, hob fronts, planter box edges, pillars and columns.

Bed it into the 1st coat of Gripset membrane with returns overlapping the adjacent B50 bond breaker band, then overcoat with the 2nd coat of membrane.

200mm × 200mm with 120mm wall and floor returns, designed to overlap the 120mm B50 band.

What membranes is it compatible with?

All Gripset liquid membranes – 38FC, 2P, C-1P, P39, LS and Xpress Multi Pro Membrane.

Why not just fold tape around an external corner?

External corners suffer high tensile load and the tape can lift away from the substrate – a pre-formed corner stays tight against all three faces.

Store flat in a dry area out of direct sunlight.

Preformed external waterproofing corner with a flexible rubber centre and non-woven fleece backing, designed to reinforce external wall and floor corners, hobs, curbs, and movement joints in waterproofing membrane systems.

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Gripset Elastoproof External Corner

$8.25

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Preformed external 270 degree corner for Elastoproof Jointing Band. 200mm x 200mm with 120mm wall and floor returns.

Gripset Elastoproof Prefabricated External Corner is a moulded corner piece for detailing Elastoproof Jointing Band at critical 270 degree intersections. Grey NBR rubber with fabric edges. Bedded into wet Gripset membrane, it maintains the flexible zone and gives a continuous elastic seal.

What it's for

External 270 degree corner intersections in Elastoproof Jointing Band applications
Joint intersections requiring a continuous, elastic seal
Works with any Gripset membrane

Why waterproofers buy it

Compatible with all Gripset membranes
Maintains the flexible zone through the corner
100% elastic recovery when exposed to movement
Waterproof and a vapour barrier
Grey NBR rubber, 200mm x 200mm with 120mm returns

Specs

Corner angle: external 270 degree. Size: 200mm x 200mm with 120mm wall/floor returns. Material: moulded NBR rubber. Application temperature: 5C to 30C.

Not for

Not compatible with solvent based materials such as adhesives, sealants or coatings.

Enables 100% elastic recovery when exposed to movement

Eliminates lapping and bonding of fabrics at critical corner areas

Compatible with all Gripset membranes

Pack Size: 1 PIECE

1 PIECE$8.2510 PACK$82.50

Quantity: 1

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Gripset Elastoproof External Corner

1 PIECE

The Waterproofing Shop

Pickup available, usually ready in 24 hours

22/872 Canterbury Road
Roselands NSW 2196
Australia

+61280213517

Product Details

Protection for critical corner intersections
Ensures effective detailing at critical 270° corner intersections
Overcomes difficulties when detailing at volatile areas

Uses

External Corners – designed for 270° corner sections to form a seamless seal between wall intersections. Ideal for pillars columns and outside returns
External 270º corners
Size: 200mm x 200mm with 120mm wall/floor returns

How to Use

Apply a liberal coat of Gripset membrane, embed the corner into the wet membrane bed and push out all creases and air pockets with a flat spatula or brushTest adhesion of the products to be used over a typical area of the prepared surface and accept the substrate before any application starts
Confirm the surface temperature is not below 5C and not above 30C
Apply a liberal coat of the Gripset membrane to the surface
Ensure enough membrane is applied to cover 100% of the rear corner profile
Embed the corner profile into the wet membrane bed before the membrane skins or dries
Wet the fabric edges of the corner fully into the membrane film
Push out all creases and air pockets behind the fabric edges using a flat spatula or brush
Remove any excess membrane on the top surface of the corner by brushing over the face of the corner or onto the surface
Overlap and adhere lengths of Elastoproof Jointing Band a minimum of 40mm onto the corner section using the selected Gripset membrane

Technical Specifications

Product Type: Prefabricated corner section for Elastoproof Jointing Band applications
Corner Angle: External 270 degree (internal 90 degree corners are a separate item)
Material: NBR nitrile butadiene rubber, cured
Colour: Grey
Specific Gravity: 1.2
Size: 200mm x 200mm with 120mm wall/floor returns
Edge Construction: Fabric edges, wetted into the membrane film
Waterproofing Function: Waterproof and a vapour barrier
Elastic Recovery: 100% when exposed to movement*
Strength: High strength and excellent tear resistance*
Membrane Compatibility: Compatible with all Gripset membranes
Minimum Jointing Band Overlap onto Corner: 40mm
Application Temperature: 5C to 30C surface temperature
Chemical Incompatibility: Not compatible with solvent based materials such as adhesives, sealants or coatings
Hazard Classification: Not classified as hazardous according to criteria of Worksafe Australia
* Manufacturer stated values - the TDS cites no accredited test report

Product Files

Gripset Elastoproof External Corner1 PIECE

$8.25

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Technical overview

Gripset Elastoproof Prefabricated Corner Sections are moulded corner pieces used to detail Elastoproof Jointing Band applications at critical corner intersections. The external corner covers the 270 degree intersection and is 200mm x 200mm with 120mm wall/floor returns, moulded in cured NBR rubber with fabric edges that are wetted into the membrane film. It is bedded into a wet coat of Gripset membrane and maintains the flexible zone through the intersection, giving a seamless and elastic seal with 100% elastic recovery, and it is waterproof and a vapour barrier. It is compatible with all Gripset membranes. The Gripset data sheet cites no Australian Standard and no accredited test certificate for the prefabricated corner sections; system compliance is carried by the Gripset membrane the corner is embedded in.

View full technical data sheet

Key applications

External 270 degree corner intersections in Elastoproof Jointing Band applications
Detailing membranes at volatile areas
Joint intersections requiring a seamless and elastic seal
Corner detailing with any Gripset membrane
In place of multilayered membranes, reinforcement layers, bond breaking tapes, foam rods, sealants and welding at corners

Not compatible with solvent based materials, e.g. adhesives, sealants or coatings. Do not apply when surface temperature is below 5C or above 30C. The corner must be bedded into a wet film of the membrane; do not allow the membrane to skin or dry before bedding the corner in position. If not enough wet membrane is applied behind the corner, proper adhesion will not be achieved. Adhesion of the products to be used should be tested over a typical area of the prepared surface before the application starts.

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Technical Specifications

Product Type	Prefabricated corner section for Elastoproof Jointing Band applications
Corner Angle	External 270 degree (internal 90 degree corners are a separate item)
Material	NBR nitrile butadiene rubber, cured
Colour	Grey
Specific Gravity	1.2
Size	200mm x 200mm with 120mm wall/floor returns
Edge Construction	Fabric edges, wetted into the membrane film
Waterproofing Function	Waterproof and a vapour barrier
Elastic Recovery	100% when exposed to movement*
Strength	High strength and excellent tear resistance*
Membrane Compatibility	Compatible with all Gripset membranes
Minimum Jointing Band Overlap onto Corner	40mm
Application Temperature	5C to 30C surface temperature
Chemical Incompatibility	Not compatible with solvent based materials such as adhesives, sealants or coatings
Hazard Classification	Not classified as hazardous according to criteria of Worksafe Australia
* Manufacturer stated values - the TDS cites no accredited test report

Frequently asked questions

View all FAQs

When do I use an external corner?

Application
Wherever the membrane wraps around the outside of a 270° corner – step-downs, hob fronts, planter box edges, pillars and columns.
How is it installed?

Application
Bed it into the 1st coat of Gripset membrane with returns overlapping the adjacent B50 bond breaker band, then overcoat with the 2nd coat of membrane.
Dimensions?

Coverage & Coats
200mm × 200mm with 120mm wall and floor returns, designed to overlap the 120mm B50 band.
What membranes is it compatible with?

Compatibility
All Gripset liquid membranes – 38FC, 2P, C-1P, P39, LS and Xpress Multi Pro Membrane.
Why not just fold tape around an external corner?

Performance
External corners suffer high tensile load and the tape can lift away from the substrate – a pre-formed corner stays tight against all three faces.
How do I store it?

Storage
Store flat in a dry area out of direct sunlight.

Why trade professionals choose Gripset

Gripset supplies waterproofing membranes, primers, tapes, bond breakers and detailing components to the Australian trade, and the range is used widely on residential and commercial projects. It is built around complete systems, so the primer, the membrane and the detailing accessories are designed to work together on bathrooms, balconies, planter boxes and below-ground areas. We stock Gripset for tilers, waterproofers and builders who would rather buy the whole build-up from one place than mix components across brands.

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