How to Keep a Marquee Looking Its Best (And Why Professional Cleaning Makes a Difference)

How to Keep a Marquee Looking Its Best (And Why Professional Cleaning Makes a Difference)

by adam

Whether you own a marquee for a hospitality business, hire one out across West Sussex, or manage a venue where marquees are a regular fixture, you’ll know that keeping the fabric looking clean and presentable takes more effort than most people expect.

Marquees take a battering. Wind, rain, birds, mildew, green algae from damp storage — the list of things that conspire to make marquee canvas look old and tired is a long one. And yet the appearance of a marquee matters enormously. A dull, stained, or mildew-spotted marquee sends entirely the wrong message at a wedding, a corporate event, or a racecourse hospitality day.

Professional marquee cleaning is something that most marquee owners and hirers in Sussex don’t think about until they have a problem. This post explains what to look out for, what the cleaning process actually involves, and how to keep your investment in good shape for longer.

 

The Most Common Marquee Cleaning Problems

Mildew and mould are the biggest headache for most marquee owners. Canvas and PVC fabric are vulnerable to biological growth, particularly when stored damp — something that happens easily when a marquee is packed away after a wet event before it has properly dried out. Mildew shows as dark grey or green spotting, and if it’s not treated properly, it can permanently stain the fabric and eventually cause it to degrade.

Green algae appears on marquees that are left erected for extended periods or stored in humid, poorly-ventilated conditions. It’s particularly common on natural canvas, and it gives fabric that green cast that makes a marquee look neglected even when it isn’t particularly dirty.

Bird droppings and tree sap are spot problems rather than general surface issues, but they need prompt attention — acidic bird droppings in particular can mark and weaken fabric if left for any length of time.

General atmospheric grime builds up on any fabric left outside. Dust, traffic pollution, and general airborne particulate matter settle on the roof panels and sidewalls over time, giving the whole structure a greyed, dull appearance.

Waterproofing degradation is less visible but just as important. Marquee fabric relies on its waterproofing treatment to stay dry — once this begins to break down, water soaks in rather than running off, and the weight of water in fabric puts significant stress on the structure and seams.

 

Why You Can’t Just Pressure Wash a Marquee

It’s a natural assumption — if the fabric is dirty, hit it with a pressure washer. But this approach can cause serious damage to marquee fabric.

High-pressure water jets can force water through seams, weakening the stitching and waterproof seam tape. They can strip surface coatings from PVC fabric. On canvas, they can break down the fibres and affect the structural integrity of the material. And none of this will deal effectively with mildew — pressure washing spreads the spores rather than killing them.

Effective marquee cleaning requires the right chemical approach combined with gentle physical cleaning methods. The specific products used need to be appropriate for the fabric type — canvas and PVC have different requirements — and anything used must not compromise the waterproofing treatment.

PPC Window Cleaning’s marquee cleaning service uses methods appropriate to the fabric type, treating mildew and algae with biocidal solutions before gentle cleaning, and finishing with re-waterproofing treatment where needed.

 

When Should a Marquee Be Professionally Cleaned?

The short answer is: more often than most people think.

For marquees in regular commercial use — hired out multiple times per season across Sussex and beyond — a professional clean once or twice a season is a sensible minimum. After a particularly muddy event, or after any period of storage where the marquee was packed away without being fully dried, a clean should happen before the next erection.

For marquees that are semi-permanent fixtures at a venue — a racecourse, a hospitality suite, a sports club — a regular cleaning schedule is important both for appearance and for maintaining the fabric. A marquee left erected for months without cleaning will develop mildew in the sheltered areas where airflow is poor, and this is far more difficult and expensive to treat than regular surface cleaning.

Signs that a marquee needs attention:

• Dark spotting or discolouration on roof panels or sidewalls
• A musty smell when the marquee is entered (a sure sign of mildew)
• Fabric that feels stiff or tacky in places
• Water soaking through rather than running off (indicates waterproofing failure)
• General dullness or greying of the fabric

 

Proper Storage: The Key to Keeping Marquees Clean Longer

A significant amount of marquee cleaning work is the result of improper storage rather than hard use. The two cardinal rules for marquee storage are:

Never pack away a wet marquee. If it has rained at your event and the fabric is damp, the marquee needs to be properly dried before being rolled or folded for storage. Packing damp fabric creates exactly the warm, airless conditions that mildew thrives in. Within weeks, what would have been a minor cleaning job becomes a major one.

Store in a dry, well-ventilated space. A damp garage or a shed with a leaking roof is not appropriate storage for marquee fabric. If the storage conditions are poor, the fabric will degrade faster than normal use would account for.

For marquee hire companies based in and around Brighton, Chichester, and Bognor Regis, taking storage seriously genuinely extends the working life of each marquee — and that’s a meaningful financial consideration.

 

Re-Waterproofing: The Step Most People Skip

After cleaning, re-treating marquee fabric with a waterproofing spray or solution is important, but it’s often skipped because it’s an additional cost and effort. This is a false economy.

Once the factory-applied waterproofing treatment begins to wear off — and cleaning accelerates this, particularly with any chemical treatments — water begins to soak into the fabric rather than running off. This makes the marquee heavier when wet, puts stress on the structure and fixings, and creates a moister environment inside.

A professional marquee cleaning service should include assessment of whether re-waterproofing is needed. In many cases it is, particularly for older fabric that’s had multiple seasons of use.

 

A Note on Racecourse and Large Venue Marquees

The scale of marquee cleaning at a racecourse or large event venue is a different proposition to cleaning a single wedding marquee. Multiple large structures, often with additional fabric elements like linings, flooring covers, and connecting walkways, require a coordinated approach.

PPC Window Cleaning has experience with larger commercial cleaning jobs of this type across Sussex. If you manage a venue or run an event business in the area and need a reliable cleaning partner for your marquee stock, it’s worth getting in touch to discuss your requirements.

 

Getting in Touch

PPC Window Cleaning provides marquee cleaning services for hire companies, venues, and private clients throughout Brighton, Hove, Chichester, Bognor Regis, and Littlehampton. Call 0800 677 1718 or visit ppcwindowcleaners.uk to discuss your requirements or get a quote.