How to Keep Your Garage Dry in Heavy Rain

Tired of finding puddles inside your garage after every downpour? You're not alone. In the UK, sudden rainstorms and sloping driveways often mean water finds its way under garage doors and into places it shouldn’t be.

The good news? You can stop it.

This guide walks you through the most effective ways to keep your garage dry using garage door thresholds and related GaraDry products – from tough, weather-resistant seals to smart draught-proofing options. You’ll learn how water gets in, how to block it out, and which products are best for your setup.

No jargon. Just simple, proven solutions that work – even in heavy rain.

A wet garage isn’t just annoying – it can lead to bigger problems down the line. Think rusted tools, soggy boxes, and damp creeping into your home.

In the UK, where a sunny start can quickly turn into a storm, it’s worth taking steps to protect your space. The right setup means you can stop water at the door – and avoid costly repairs later.

Here’s what staying dry helps you avoid:

• Moisture is bad news for metal, wood, and electronics. Keeping water out protects your car, power tools, and anything else you store.
  
• Damp corners are the perfect place for mould to grow – not great for your lungs or your belongings.
  
• Water-soaked concrete can crack. Wooden frames can start to rot. Pests love damp hiding spots too.
  
• No more scooping out puddles or scrubbing away mud. Just a clean, dry garage – and more time for better things.
  

All GaraDry® products are engineered in Britain and designed to tackle these risks head-on. They’re built to last, easy to install, and made to keep the weather out for good.

One of the simplest ways to stop water getting in is by sealing the gaps around your garage door. Door seals create a tight barrier between the door and the frame, blocking wind, rain and even dust from sneaking through.

What are they?

GaraDry® door seals are made from high-quality rubber or PVC. They compress when the door closes, forming a watertight seal around the edges – perfect for stopping draughts and rain-driven spray.

Why it matters

• Stops wind-blown rain from getting in through side and top gaps.
  
• Helps maintain a stable temperature inside.
  
• Cuts down noise from outside.
  
• Ideal if you use your garage as a workshop or utility room.
  

What makes GaraDry® door seals better?

• What makes GaraDry® door seals better?
• Built to withstand extreme UK weather – from –40 °C up to +90 °C
• Designed by British engineers to last over 10,000 open/close cycles
• Easy to install with strong adhesive or screw fixings

Quick installation tips

• Clean the door frame thoroughly before fitting.
• Measure carefully and cut to size for a snug fit.
• Use the included fixings – adhesive for PVC, screws for aluminium versions.
• Check the seal after fitting by opening and closing the door – it should sit flush with no friction.

Need help choosing the right seal? Browse our range of garage door seals or get in touch – we’re here to help.

Even with a tight-fitting door, water can still seep in underneath – especially if your driveway slopes toward the garage. That’s where threshold seals come in.

Installed directly onto the garage floor, threshold seals block surface water from crossing the bottom edge of the door.

What are they?

GaraDry® threshold seals are made from heavy-duty PVC, designed to sit firmly across the doorway. They create a physical barrier that stops water, leaves, and debris from getting in – without making it hard to drive over.

Key features

• Durable PVC: Tough enough for everyday vehicle use
• High-visibility strip: Prevents trips and makes the threshold easy to spot
• UV-stable material: Won’t crack or fade over time
  

Why choose GaraDry® threshold seals?

• Designed and made in Britain to exacting standards
• Simple DIY fitting with included fixings or sealant
• 5-year warranty for added peace of mind
  

How to install

• Level and clean the garage floor surface.
• Drill through the pre-marked holes (or apply adhesive for no-drill options).
• Secure in place using screws or high-strength sealant.
• Seal the edges with the supplied silicone to keep water out completely.

Threshold seals are ideal if you often find water pooling outside your garage or running in during storms. See our full range of threshold seals to find the best fit for your door.

If your garage sits at the bottom of a slope or is prone to frequent flooding, sealing alone might not be enough. You may also need active drainage to direct larger volumes of water away from the entrance.

While GaraDry® doesn’t supply drainage systems, here’s what you need to know:

Common drainage types

• Wide grates positioned across the garage entrance that direct rainwater into underground drainage pipes.
  
• Slim, discreet gaps that collect water without the bulk of a traditional grate – ideal for tiled or epoxy-coated floors.
  

What to consider

• The ground needs a slight fall towards the drain so water flows properly.
  
• Look for a system that can handle heavy rain – around 10 litres per second is a good benchmark.
  
• Choose systems with removable covers or grates so you can easily clear out leaves and debris.
  

Installing drainage? It’s best to speak with a professional. Once that’s sorted, you can pair it with a GaraDry® threshold seal or door seal to completely seal off your garage from water ingress.