
Pool Opening & WinterisationReady for Summer, Safe for Winterin Surrey, Sussex, Kent & London
Open on time with clear water in spring, and close safely in autumn so frost and algae don't undo your pool over winter.
11 years' experience
Working on pools since before 2019
5.0 on Google
Five-star rated
£1m public liability
Insured for your peace of mind
Free site visits
Free site visit and quote
Domestic & commercial
Homes and businesses
About this service
Two visits that protect your season.
Pool opening gets your pool from covered and dormant to clean, balanced and swimmable for the season. Winterisation, or closing, prepares the pool and equipment to sit through the colder months without damage.
Both involve more than lifting or fitting a cover. Opening includes cleaning, restarting and checking the plant, and balancing the water. Winterisation includes balancing and dosing for winter, lowering levels where needed, protecting equipment and pipework from frost, and fitting the cover.
It's for outdoor pool owners who don't run their pool year-round. Customers book us to winterise and open their pool every year, with the correct chemicals each time. Doing it properly matters because a poorly closed pool can mean frost-damaged equipment and a green, expensive start to summer.
If it's ignored
When closing and opening go wrong.
Most spring problems were created the autumn before.
Frost damage
Water left in pumps, filters, heaters and exposed pipework can freeze and crack them, leading to costly replacements in spring.
A green pool in spring
Without the right winter chemistry, algae grows under the cover, turning opening into a long clean-up.
Stained finishes
Leaves and debris left sitting over winter can stain liners and tiles.
A late start to summer
If problems are found at opening, repairs and recovery can eat into the swimming season.
Watch out for
Common mistakes we see
- Fitting the cover without balancing and dosing the water
- Leaving water in equipment exposed to frost
- Opening too late, after algae has started
- Starting equipment without checking it first
Our process
Five clear steps, no surprises.
- 01
Book your visit
Arrange your opening or closing date in advance so it fits your season.
- 02
Inspection
Pool, cover and equipment checked before anything is started or shut down.
- 03
Open or close
Cleaning, equipment start-up or protection, and water levels adjusted as needed.
- 04
Chemical balance
Water tested and dosed correctly for summer swimming or winter storage.
- 05
Completion
Any issues spotted are reported and quoted, with guarantee terms confirmed in writing on any repairs.
What you get
The difference you'll notice.
Swim sooner
A properly opened pool is ready to use quickly.
No frost damage
Equipment and pipework protected through winter.
Easier spring
Correct winter chemistry means less clean-up at opening.
Problems caught early
Equipment checked at both ends of the season.
Done for you each year
Book once and we'll look after your season, year after year.
Competitive pricing
Customers describe our pricing as very competitive.
In detail
What each visit involves.
The exact steps depend on your pool, equipment and cover.
Spring opening
Removing and cleaning the cover, clearing debris, topping up the water, reconnecting and restarting equipment, checking for leaks or wear, and testing and balancing the water ready for swimming.
Autumn winterisation
Cleaning the pool, balancing and dosing for winter, lowering the water level where required, draining or protecting equipment and exposed pipework, and fitting the winter cover securely.
Equipment checks
Both visits are a good time to inspect pumps, filters, heaters and valves, so any faults are fixed before they cause trouble.
Covers
Winter and safety covers are fitted correctly. If your cover is worn, we can advise on replacement.
Above-ground pools
Above-ground pools need opening and closing too. We look after those as well.
Domestic and commercial
Seasonal opening and closing for home and commercial outdoor pools.
FAQs
Pool Opening & Winterisation: your questions.
Can't see yours? Call 07879 067691.
When should I open my pool?
Many owners open in spring, before warm weather encourages algae. We'll help you choose a date that suits your pool.
When should I close my pool?
Usually in autumn once you've stopped swimming and before hard frosts.
How much does opening or winterisation cost?
It depends on the pool and what's needed. Contact us for a quote.
Do I need to winterise my pool?
If it's outdoor and not run through winter, yes; it protects equipment from frost and keeps water in better condition.
Can you do it every year?
Yes. Many customers book us to winterise and open their pool each year.
What if you find a problem?
We'll explain it and give you a quote, so it can be fixed before the season starts.
Do you open and close above-ground pools?
Yes.
Which areas do you cover?
Surrey, Sussex, Kent, Hampshire and London.
Related services
Other ways we can help.

Swimming Pool Servicing
Weekly, fortnightly or monthly visits tailored to your pool or spa. Clear water, balanced chemicals, no weekend chores.
Learn more
Swimming Pool & Leak Repair
Pumps, filters, valves, chlorinators and leaks traced and fixed, often the next day.
Learn more
Plant Room & Heating Installation
New plant rooms and heating systems that run efficiently and reliably.
Learn moreWe provide pool opening & winterisation in Guildford, Cobham, Reigate, Horsham, Haywards Heath, Sevenoaks, Tunbridge Wells, Petersfield, Wimbledon, Weybridge, Esher, East Grinstead, Tonbridge, Winchester, Richmond and the wider Surrey, Sussex, Kent, Hampshire and London area. See all our pool and hot tub services or view every area we cover.
Free quote
Book your season in.
Arrange opening or closing now and we'll take care of the rest.
07879 067691"Excellent service. Completely refurbished pool and replaced surroundings, all done on time and within budget. Also good value annual service plan. Highly recommended."
"Baldwin's Pools came and resolved my pool leak, quickly and professionally. They are happy to come and help me with maintenance when I have a problem or check chemical levels when I'm away."
"Anthony has installed a new pool pump, he winterises and opens up the pool each year ensuring the correct amount of chemicals... when I have had a problem Anthony has been there to sort out. Very competitive pricing."
Request your free site visit
Free site visit and quote. £1m public liability insured.

