Built for Commercial Roofs and Industrial Buildings
Roof valley leak repair specialists for industrial roof types where liquid rubber waterproofing performs best — corrugated metal, Kingspan composite, and asbestos cement systems on commercial and industrial buildings across Ireland.
Industrial & Warehouse
Corrugated metal sheds, factory roofs, and agricultural buildings — long-span roofs with internal valleys exposed to constant water concentration.
Commercial Composite
Kingspan and similar insulated metal panel systems — offices, retail units, and modern industrial estates where panel-to-panel valleys need specialist treatment.
Heritage Industrial
Asbestos cement roofs — older industrial, commercial, and farm buildings where replacement is costly and waterproofing extends service life by 15+ years.
Our system bonds to metal and asbestos cement substrates. For traditional pitched roofs with slate, tile, or lead-clad valleys, a specialist roofer in that trade is the right call — we'll let you know during the free inspection if your project falls outside our system.
Watch: Our valley waterproofing process in action
Our 5-Step Valley Waterproofing Process
Our valley repair and waterproofing works follow a structured, systematic process, designed to eliminate leaks, treat corrosion, and provide lasting protection without unnecessary disruption.
Valley Inspection & Assessment
We begin with a thorough inspection of your roof valleys, identifying rust, corrosion, cracks, and potential leak points. This assessment determines the exact treatment required.
Many valley leaks are caused by hidden damage that isn't visible from ground level — our inspection identifies issues before they become major problems.
Surface Cleaning & Preparation
The valley is carefully cleaned to remove dirt, moss, debris, and loose material. For metal valleys, we use low-pressure cleaning to avoid damaging the surface.
Proper surface preparation is critical — waterproofing systems only bond effectively to clean, dry surfaces.
Rust Treatment & Priming
Any rusted or corroded areas are treated with Brunox rust converter, which chemically neutralises the rust. Once treated, we apply LAVA Super Quick Primer for optimal adhesion.
Treating rust before waterproofing prevents corrosion from spreading underneath the coating — a common failure point in inferior repairs.
LAVA Liquid Rubber Application
The liquid rubber waterproofing is applied in multiple coats, building up a seamless, flexible membrane that bonds directly to the valley surface and surrounding roof materials.
The LAVA system remains flexible after curing — it expands and contracts with temperature changes, eliminating the cracking that causes traditional repairs to fail.
Protective Top Coat & Inspection
A UV-resistant top coat is applied for additional protection against weathering and sun damage. We then conduct a final inspection to ensure complete coverage.
The finished valley is fully waterproof, protected against UV degradation, and backed by our 15+ year guarantee.
Watch: Valley corrosion and why proper treatment matters
Long-Term Protection for Commercial Roof Valleys
All valley waterproofing works are carried out by trained specialists and backed by a company-backed workmanship warranty.
Reliable Long-Term Leak Protection
Our waterproofing system is designed to provide lasting protection against leaks, even in Ireland's demanding weather conditions.
Your valleys remain watertight for years to come, eliminating recurring leak issues.
Reduced Future Repair Costs
By addressing the root causes of valley failure — not just the symptoms — we help you avoid expensive emergency repairs down the line.
One proper treatment now saves multiple repairs later.
Corrosion & Cracks Treated Correctly
Every repair follows our systematic treatment process — rust conversion, crack repair, priming, and multi-layer waterproofing.
No shortcuts. No temporary fixes. Just proper, professional workmanship.
Protection During Heavy Rainfall
Roof valleys handle concentrated water flow from multiple roof slopes. Our system is designed for constant water exposure and heavy rainfall events.
Peace of mind when the weather turns — your valleys are protected.
Frequently Asked Questions
Answers to the questions we hear most often about valley leak repair, waterproofing scope, and roof type fit.
We focus on commercial and industrial buildings — warehouses, factories, agricultural sheds, retail and office buildings — where our liquid rubber valley waterproofing makes economic sense. Smaller domestic projects with traditional pitched roofs are generally better served by a local roofer; we can advise during the free inspection.
Yes. Sometimes the metal or asbestos cement valley is sound and the leak is caused by debris blockage, moss build-up, or a single point failure. After our free inspection we'll recommend the most cost-effective option — cleaning, spot repair, or full waterproofing. We don't upsell waterproofing where it isn't needed.
It depends on the valley's condition. Cleaning suits sound metal or asbestos valleys blocked by debris. Spot leak repair handles localised corrosion or a single failure point. Full LAVA waterproofing is recommended for systemic corrosion, multiple failure points, or end-of-life sheet. Full replacement is rarely necessary — our liquid rubber system extends the existing valley's life by 15+ years for a fraction of the cost.
We specialise in valleys on corrugated metal roofs, Kingspan composite (insulated panel) roofs, and asbestos cement roofs — the industrial and commercial roof types where liquid rubber bonds reliably. We don't service traditional pitched roofs with slate, tile, or lead-clad valleys — those need a roofing specialist familiar with that trade.
Yes. Our process treats existing rust with Brunox rust converter, primes with LAVA Super Quick Primer, then applies a seamless liquid rubber membrane. For severely corroded sheets we may recommend partial sheet replacement first, then waterproofing — we'll set out the recommendation in writing after the free inspection.
LAVA liquid rubber valley waterproofing typically delivers 15+ years of leak-free service with normal inspection and minor maintenance. A full valley replacement (strip-out, new metal sheet, reinstallation) typically lasts longer but costs 5-10× more, requires major access works, and disrupts the building. For most commercial properties, LAVA waterproofing is the cost-effective choice.
Arrange a Free Valley Leak Inspection
If your roof valleys are leaking, cracked or showing signs of corrosion, early intervention can prevent widespread roof failure.
What you can expect:
- Free inspection and assessment
- Fast site visit availability
- Clear, no-obligation quotation
- Detailed proposal outlining the recommended repair system
Contact us today to arrange a free valley inspection.
