KingProof PVF®
High-performance, pre-applied, fully bonded PVC membrane 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
- ≥ 500 N/50 mm
- Crack-bridging ability ASTM D 5385
- ≥ 3.2 mm (Pass)
Overview
KingProof PVF is a specially engineered non-woven polypropylene (PP) fleece co-extruded with a highly flexible soft PVC membrane, designed for use with structural reinforced concrete.
KingProof PVF 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, making it ideal for demanding below-grade applications.
Where to use
KingProof PVF is designed for a variety of underground waterproofing applications, including:
- Foundations and basements
- Retaining walls and floor slabs
- Underground car parks and garages
- Tunnel walls and base slabs
- Marine and salt-contaminated environments
- Concrete structures in chemically aggressive environments
Why use it
- Fully bonded system – forms a permanent mechanical bond with freshly poured concrete
- Excellent mechanical properties; tough and durable
- Lightweight and flexible, easy to handle and install on site
- Reliable protection against lateral water pressure up to 6 bar
- Excellent chemical resistance; suitable for saline or alkaline environments
- Effective barrier against radon-gas infiltration
- Can bridge cracks up to 3.2 mm while withstanding 6.9 bar of water pressure
- 50 mm clear selvedge along the edge for overlapping
Technical properties
| Material | Soft PVC + PP 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) | 1.9 mm |
| Tensile strength MD/CMD (EN ISO 12311-2 A) | ≥ 500 N/50 mm |
| 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 (tight) |
| Impact resistance (EN 12691 A) | ≥ 350 mm |
| Static load resistance (EN 12730 A/B) | ≥ 20 kg/24 hr (Pass) |
| Tear resistance MD/CMD (EN 12310-1) | ≥ 350 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 |
| Durability against chemicals (EN 1847 / EN 1928 B) | 60 kPa @ 28 days @ 23°C |
| Compatible with bitumen (EN 1548 / EN 1928 B) | 60 kPa/24 hr |
| Reaction to fire (EN 13501-1) | Class E |
Standards and approvals
KingProof PVF complies with DIN EN 13967 Type A and Type T (waterproofing membrane with moisture barrier and groundwater barrier), DIN EN 13491 and BS 8102, as per the technical properties table.
How to use
Method of use
KingProof PVF 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. All upstands, corners, penetrations and interfaces must be properly detailed before installing the membrane, forming a 20 mm fillet at the base of retaining walls, formwork stop-ends and upstands using a modified cementitious mortar. A geotextile cushion layer of no less than 300 g/m² shall be installed directly over the blinding concrete.
Application
Apply KingProof PVF to a properly prepared substrate with the PP fleece facing the concrete to be waterproofed. 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 PVF over the centre of each butt joint using an approved adhesive. Inspect the installed membrane for damage before placing concrete and repair any damage by heat-welding a patch over the affected area.
Limitations and notes
- Concrete must be of high quality, fully compacted, properly placed and properly cured
- Take care when using vibrating equipment to prevent damage to the installed system
- Maintain a minimum overlap of 50 mm at the edges and stagger roll ends by at least 300 mm
Coverage, packaging and storage
Packaging
| Thickness | 1.9 mm |
|---|---|
| Width | 1.1 m, or 2.2 m (+1%) |
| Length | 25 m |
| Roll | 40 kg (1.1 m width) or 79.5 kg (2.2 m width) |
| Pallet | 9 rolls/pallet |
Storage
KingProof PVF has a shelf life of 18 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 PVF 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.