For waterproofing pipes, drainage outlets, and cabling penetrations in high-risk areas like tiled showers, balconies, planter boxes, or water features, Elastoproof Base Collars provide a prefabricated, elastomeric flange seal. These collars prevent water ingress at the vulnerable junctions where substrate movement, vibration, and thermal expansion typically crack standard liquid membranes or tear sealants away from the penetration neck.
Elastoproof Base Collars replace the need for caulkable sealants, removing the risk of adhesion failure at the pipe-to-substrate boundary. Built with high tear strength and 100% elastic recovery, the central rubber section stretches tightly around the penetration while the outer fabric edges embed directly into the wet membrane. This creates a continuous, high-movement joint that isolates the pipe's physical vibration and thermal movement from the surrounding waterproofing system. The system is compatible with all Gripset membranes, adhesives, and coatings.
Install on prepared and primed surfaces around penetrations in:
To prevent joint failure, the collars must be installed correctly into the wet membrane system:
Yes – when installed correctly and fully integrated with a Gripset membrane system, they form a complete watertight seal without the need for caulkable sealant at the penetration interface.
Yes – they are designed for both internal and external applications, including balconies, rooftops, podiums, and planter boxes, provided they are overcoated with a suitable Gripset membrane.
Cut the central elastomeric zone to approximately 75% of the pipe diameter to ensure a tight grip around the penetration.
They are compatible with all Gripset liquid-applied membranes. Avoid use with solvent-based membranes or coatings.
No – substrates must be dry and clean before embedding the collar into the wet membrane to ensure proper bonding and long-term performance.
| Application / Use Case | Key Benefit | Primary Trades |
|---|---|---|
| Shower, bath & laundry pipe penetrations | Forms a watertight seal that integrates seamlessly with the liquid membrane system. | Waterproofers, Tilers, Plumbers |
| Balcony & rooftop service penetrations | UV-resistant fabric face when overcoated; withstands external conditions without breakdown. | Waterproofers, Builders |
| Balustrade posts on decks & podiums | Elastic recovery absorbs thermal and live-load movement without tearing the seal. | Builders, Waterproofers |
| Planter boxes & garden beds penetrations | Protects against moisture ingress at vulnerable pipe or conduit junctions. | Landscapers, Waterproofers |
| Ponds, tanks & water feature penetrations | Maintains water containment integrity in submerged or high-moisture areas. | Waterproofers, Landscapers |
| Plant room pipework & mechanical penetrations | High tear resistance for areas subject to vibration or frequent service movement. | Mechanical Contractors, Waterproofers |
Note: Do not install collars over damp surfaces or use with solvent-based membranes or coatings. Always embed collars into the wet coat for proper adhesion and performance.
Gripset Elastoproof Collars adhere and integrate with Gripset liquid-applied membranes on a range of building substrates. For optimal performance, surfaces must be correctly prepared and, where necessary, primed according to substrate type.
| Substrate | Surface Preparation | Recommended Primer |
|---|---|---|
| Concrete (cured) | Clean, remove laitance, dust, and contaminants; ensure dry surface. | Gripset GP Primer (if porous) |
| Cement render / screeds | Ensure fully cured; remove loose material and dust. | Gripset GP Primer (if porous) |
| Fibre cement sheeting | Clean surface; ensure securely fixed. | Gripset GP Primer (if required) |
| Plasterboard | Ensure joints are flush; remove dust. | Gripset GP Primer (if required) |
| Masonry & blockwork | Remove dust, efflorescence, and friable material. | Gripset GP Primer |
| Metal (galvanised, zincalume, stainless) | Clean thoroughly; remove oxidation. | Gripset OP Primer (if required) |
| Timber | Ensure dry, smooth, and free from loose fibres. | Gripset GP Primer |
| Existing waterproofing membranes | Ensure surface is sound, clean, and fully bonded. | Consult Adheseal for compatibility |
| Property | Value |
|---|---|
| Material | Gripset Elastoproof fabric with central elastomeric zone |
| Colour | Grey elastomeric centre with white non-woven fabric face |
| Sizes | Small – 120 mm × 120 mm (up to 50 mm penetration) Medium – 250 mm × 250 mm (up to 110 mm penetration) Large – 300 mm × 300 mm (up to 150 mm penetration) |
| Thickness | Approx. 0.8 mm |
| Elongation | ≥ 300% |
| Tear Resistance | High (fabric reinforced) |
| Service Temperature | -30 °C to 90 °C |
| Application Temperature Range | 5 °C to 35 °C |
| Substrate Compatibility | Concrete, fibre cement, plasterboard, masonry, timber, metals, existing waterproofing membranes (solvent-free systems) |
| Primer Requirements | Gripset GP Primer for porous/dusty surfaces; OP Primer for non-ferrous metals; consult Adheseal for existing membrane compatibility |
| Shelf Life | 12 months in original unopened packaging |
| Storage Conditions | Store in cool, dry conditions away from direct sunlight |
| Limitations | Not for use with solvent-based membranes or coatings; not to be installed over damp surfaces |
Here are some common examples on where Gripset Elastoproof Base Collars used by our customers.
