KingProof PVFS®
High-performance, fully bonded PVC membrane co-extruded with a swelling non-woven for below-grade waterproofing.
SpecWorld has the Spec Pack, CSI specification and drawings for registered specifiers.
- Tensile strength MD/CMD EN ISO 12311-2 A
- ≥ 980 N/50 mm
- Elongation MD/CMD EN ISO 12311-2 A
- ≥ 240%
- Crack-bridging ability ASTM D 5385
- ≥ 3.2 mm (Pass)
Overview
KingProof PVFS is a high-performance, pre-applied waterproofing membrane composed of a PVC sealing layer co-extruded with an advanced swelling non-woven geotextile. This non-woven layer incorporates water-reactive polymers that swell on contact with moisture, providing self-sealing and self-healing capabilities.
KingProof PVFS is installed before the steel reinforcement is fixed and the concrete is poured. The unique configuration of the membrane enables a full mechanical bond with freshly poured concrete, eliminating water migration between the membrane and the structure. It offers superior resistance to water, gases (e.g. radon), salts and chemical exposure.
Where to use
KingProof PVFS can be used in both pre-applied and post-applied configurations and is particularly suited to:
- Underground waterproofing – foundations, basements, retaining walls, floor slabs, car parks and garages
- Sealing of precast concrete elements to enhance joint tightness and durability
- Protection of concrete exposed to aggressive groundwater or chemically active environments
- Marine and salt-contaminated environments
Why use it
- Fully bonded system – permanent mechanical bond with freshly poured concrete
- Can be used both pre- and post-applied
- Swelling fleece offers self-healing properties, maintaining integrity after minor damage or movement
- Excellent mechanical properties; tough and durable
- Excellent chemical resistance; suitable for saline environments
- Effective barrier against radon-gas infiltration
- High flexibility and crack-bridging capacity
- Compatible with bitumen
Technical properties
| Material | PVC-P membrane + PP swelling non-woven |
|---|---|
| Visible defects (EN 1850-2) | No visible defects (Pass) |
| Straightness (EN 1848-2) | 75 mm/10 m (Pass) |
| Working temperature | -5 to 50°C |
| Thickness (EN 1849-2) | 1.6 mm ± 10% |
| Weight (EN 1849-2) | 1.6 kg/m² ± 10% |
| Tensile strength MD/CMD (EN ISO 12311-2 A) | ≥ 980 N/50 mm |
| Elongation MD/CMD (EN ISO 12311-2 A) | ≥ 240% |
| Water tightness (ASTM D 5385) | ≥ 690 kPa |
| Water tightness (EN 1928 B) | ≥ 60 kPa @ 24 hr; ≥ 500 kPa @ 72 hr |
| Watertightness after cracking (ASTM D 5385) | Mechanical bond with concrete; 6.9 bar / ≥ 3.2 mm |
| Impact resistance (EN 12691 A) | ≥ 600 mm |
| Static load resistance (EN 12730 A/B) | ≥ 20 kg/24 hr (Pass) |
| Tear resistance MD/CMD (EN 12310-1) | ≥ 500 N (nail shank) |
| Joint shear resistance (EN 12317-2) | ≥ 300 N/50 mm |
| Crack-bridging ability (ASTM D 5385) | ≥ 3.2 mm (Pass) |
| Durability against artificial ageing (EN 1928 B) | 12 weeks @ 70°C, 60 kPa/24 hr (Pass) |
| Durability against chemicals (EN 1847 / EN 1928 B) | 28 days @ 23°C; 60 kPa @ 24 hr; 500 kPa @ 72 hr (Pass) |
| Compatible with bitumen (EN 1548 / EN 1928 B) | 60 kPa @ 24 hr; 500 kPa @ 72 hr (Pass) |
| Root resistance (DIN CEN/TS 14416) | Membrane and overlapping (Passed) |
| Reaction to fire (EN 13501-1) | Class E |
Standards and approvals
KingProof PVFS complies with DIN EN 13967 Type A and Type T (waterproofing membrane with moisture barrier and groundwater barrier) and BS 8102, combining Type A (barrier protection) and Type B (integral protection) systems, as per the technical properties table.
How to use
Method of use
KingProof PVFS must be installed by experienced and qualified personnel.
Surface Preparation
Ensure all substrates are solid, clean and free of debris, sharp edges or voids greater than 12 mm. Lean-mix concrete or compacted sands are suitable base substrates. Detail all upstands, corners, penetrations and interfaces before installing the membrane, forming a 20 mm fillet at the base of retaining walls, stop-ends and upstands with a modified cementitious mortar. Install a geotextile cushion layer over the blinding concrete as part of the preparation.
Application
Position each roll so the edge selvedge of the previous roll is overlapped by a minimum of 50 mm, and stagger roll ends by at least 300 mm. Seal all overlaps using heat-welding equipment and compress with a wooden roller. Place a 150 mm wide strip of KingProof PVFS over the centre of each butt joint. Inspect the installed membrane for damage before placing concrete and repair any damage by heat-welding a patch over the affected area.
Coverage, packaging and storage
Packaging
| Thickness | 1.6 mm |
|---|---|
| Width | 2.2 m (+1%) |
| Length | 25 m |
| Roll | 85.5 kg |
| Pallet | 7 rolls/pallet |
Storage
KingProof PVFS has a shelf life of 12 months from the date of manufacture when stored in the original packaging at temperatures between 5°C and 30°C, kept dry and protected from direct sunlight, snow, ice, water and heat sources. Do not stack sharp items or additional pallets on top of the membrane during transport and storage.
Health and safety
KingProof PVFS is not directly associated with any known hazard during normal use. As with all construction products, avoid contact with the eyes and skin and use in well-ventilated areas. For further information, refer to the Safety Data Sheet.