Keep your warehouse dry, clean and compliant – with a simple threshold seal

Water ingress isn’t just a problem for homes. In commercial settings, the risks – and the costs – can be far greater.

From damaged stock and corroded equipment to costly downtime and compliance failures, even a small flood can quickly become a major disruption. But with the right threshold protection, it’s a problem you can prevent – simply and affordably.

In this guide, we’ll break down the hidden costs of unchecked water ingress, show how GaraDry® seals reduce those risks, and help you choose the right solution for your site.

What does a flood really cost your business?

Water doesn’t need to be knee-deep to do serious damage. Here’s where the costs add up:

Equipment and asset damage

Water corrodes shelving, conveyor systems, control panels and pallet trucks. Even shallow flooding can write off thousands in assets – just 50mm of water could total £10,000 in damage to a single wall of racking.

Damaged stock

In food, pharmaceutical and electronics warehouses, even minor moisture can mean contamination or spoilage – often requiring costly disposal, reporting, or recalls.

Structural repairs

Repeated saturation cracks concrete, degrades floor coatings and damages levelling equipment. Full repairs often start at £100 per square metre.

Operational downtime

Flooded bays can stop dispatch and delay production. Just one hour of downtime can cost £1,000–£5,000 in lost output and labour.

How GaraDry® threshold seals reduce flood risk

Our commercial threshold seals are engineered to stop water at the door – literally.

Creates a watertight barrier

Each seal includes a high-strength aluminium base and a 30mm EPDM rubber insert that blocks rain, run-off, and wash-down spray from crossing the threshold.

Built for long-term protection

Made from corrosion-resistant materials, GaraDry® seals stay solid for over 10 years with minimal maintenance – no warping, sagging or leaks.

Easy to maintain

If the insert wears down, just clip it out and replace it – no need to remove or re-drill the base.

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Real-world example: small flood, big impact

A regional logistics centre saw 80mm of rainfall in a single afternoon. Without seals, water flowed into five bays – damaging five electric pallet trucks, flooding 20 metres of racking, and halting operations for 48 hours. Total cost? Over £25,000.

After installing GaraDry® Class D threshold seals on all 12 bays, a later 100mm storm caused no water ingress and zero downtime.

What’s the return on investment?

A commercial threshold seal typically costs £80–£100 per bay, including installation. Here’s how quickly they pay off:

Cost item	Without seals	With GaraDry®
Annual clean-up & repairs	£5,000	< £500
Stock write-offs	£10,000	£0
Downtime (8 hrs @ £2,000)	£16,000	£0
Total cost per year	£31,000	< £500

Best practices for installation and maintenance

Start with a site check

Identify thresholds most at risk – sloping bays, poor drainage or high-traffic entries.

Choose DIY or pro install

All GaraDry® kits come with pre-drilled bases, fixings and sealant – fit in under an hour.

Maintain quarterly

• Sweep away grit, dust and debris
• Inspect rubber inserts annually
• Refresh silicone bead every two years for maximum protection

Follow our step-by-step installation guide

A simple fix for a costly problem

Flooding in a commercial garage or warehouse can lead to thousands in avoidable damage. GaraDry® threshold seals give you a simple, reliable way to protect what matters – and avoid the stress, cost and disruption of water ingress.

Need help choosing the right seal? Contact our team for expert advice and product recommendations. We’re here to help.

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Read: Why Warehouses Need Threshold Seals to Stay Safe and Clean