Ex Tax: £100.90
LAVA 20 WATERPROOFING KIT (20m²)
From £619.00
Lava 20 waterproofing kit 20m² is a Durable, Versatile & Flexible Liquid Rubber Waterproofing System for Both New Builds & Refurbs.
20 sqm Kit Includes:
- 2 x 25 kg of Lava 20
- 1 x 4 L of Fast Primer
- 20 sqm Chop Strand Matting
- 1 x Polyester Reinforcing Tape
What does your project include?
Select everything that applies to your project, then choose the required pack sizes and quantities.
For wall-to-floor connections, flashings, internal/external corners, chimneys, pipes, gutters, outlets and fixings.
Controlled application on vertical and sloped surfaces, applied in 2–3 layers.
Strong local reinforcement across joints, seams, cracks and movement-prone areas.
Helps speed curing and supports efficient thicker-coat application on larger jobs.
For filling and smoothing holes, gaps, cracks, voids and joints before waterproofing.
A clear protective finish applied in 1–2 layers.
A coloured protective finish designed for long-term colour and surface performance, applied in 1–2 layers.
Description
Lava 20 waterproofing kit 20m² is a complete waterproofing solution designed for medium-sized flat roofs, terraces, and balcony areas requiring durable and long-lasting protection.
This kit provides a seamless liquid waterproofing system that effectively prevents water penetration, protects against leaks, and extends the lifespan of your roof. Whether you are a professional contractor or an advanced DIY user, this system delivers consistent and professional results.
Unlike traditional waterproofing methods that rely on joints and patch repairs, Lava 20 creates a continuous membrane that eliminates weak points and ensures reliable protection.
Learn more about our flat roof waterproofing system
Ideal for Medium-Sized Roofing Applications
The lava 20 waterproofing kit 20m² is ideal for:
- Medium-sized flat roof repairs
- Terrace waterproofing
- Balcony waterproofing
- Residential roofing projects
- Refurbishment and maintenance work
- Contractor and advanced DIY applications
Perfect for projects that require more coverage than small kits but are not large-scale commercial jobs
Why Lava 20 Waterproofing Kit 20m² Works Better
Traditional waterproofing systems often fail due to cracks, joints, and weak adhesion.
Lava 20 solves these issues with a complete system.
✔ Seamless Waterproof Membrane
Creates a continuous layer without joints or overlaps
✔ Flexible and Crack-Resistant
Adapts to movement and temperature changes
✔ Strong Adhesion Performance
Bonds securely to concrete, metal, and existing surfaces
✔ Long-Term Leak Protection
Prevents water ingress and recurring damage
✔ Consistent Coverage Across Medium Areas
Ensures reliable results for standard roofing projects
Widely used in professional roof leak repair system applications
Simple Application Process (DIY & Professional Friendly)
The lava 20 waterproofing kit 20m² is designed for easy and efficient application.
Step-by-step process:
- Clean and prepare the surface
- Apply primer to ensure proper adhesion
- Reinforce joints, seams, and cracks
- Apply liquid waterproof membrane evenly
- Allow curing to form a seamless protective layer
Follow Lava 20 application guidelines and Technical Data Sheet (TDS) for best results
What’s Included in the Kit
This liquid waterproof membrane kit includes everything required for a complete waterproofing system:
- 2 x 25 kg Lava 20 Liquid Waterproofing Membrane
- 1 x 4L Fast Primer
- 20 sqm Chop Strand Matting (for reinforcement)
- 1 x Polyester Reinforcing Tape (for joints and detailing)
Designed as a complete waterproofing solution for medium-sized areas.
Key Benefits
✔ Long-lasting waterproof protection (25 years)
✔ Seamless membrane with no weak points
✔ Ideal for medium-sized roof areas
✔ Easy application for contractors and DIY users
✔ Resistant to weather and temperature changes
✔ Cost-effective alternative to roof replacement
Where Can It Be Used?
The lava 20 waterproofing-kit 20m² is suitable for:
- Flat roofs
- Balconies
- Terraces
- Concrete surfaces
- Residential roofing projects
- Refurbishment and maintenance works
Why Customers Choose Lava 20
- Proven waterproofing system
- Easy-to-use complete kit
- Reliable results for medium-sized projects
- Trusted by professionals and homeowners
- Consistent performance across surfaces
Built for durability, flexibility, and long-term protection.
Not Sure If This Kit Is Right for Your Project?
Use this guide:
- Small repairs → 2m²–10m² kits
- Medium roofs → 20m²–30m² kits
- Large roofs → 50m²–100m² kits
- Industrial projects → 500m²–1000m² kits
Choosing the right lava 20 waterproofing kit ensures the best results.
Frequently Asked Questions
Can I apply this kit myself?
Yes, it is suitable for advanced DIY users and professionals.
How long does the waterproofing last?
Up to 25 years with proper application.
Is it suitable for terrace waterproofing?
Yes, it is ideal for terraces and balconies.
Can it be used on existing roofs?
Yes, after proper surface preparation.
Ready to Protect Your Roof?
Don’t let small leaks turn into costly repairs.
Choose a proven lava 20 waterproofing kit 20m² designed for reliable, long-lasting protection.
Add to Cart Now and Secure Your Roof
This product application will be available soon. Please contact us if you need it now.
This technical document will be available soon. Please contact us if you need it now.
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This product brochure will be available soon. Please contact us if you need it now.
This guide will be available soon. Please contact us if you need it now.
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Lava 20 Dry Sample Kit – Try It for Free!
- Lava 20 Dry Sample
- Anti-Slip Sample
- Lava 20 Dark Top Coat Sample
- Lava 20 White Top Coat Sample
LAVA 20 WATERPROOFING KIT 10m²
- 1 x 25 kg of Lava 20
- 2 x 750 ml of Fast Primer
- 10 sqm Chop Strand Matting
- 12 m x Polyester Tape
