Hampshire · England

Gutter Sealing in Winchester

Gutter sealing for Winchester and the surrounding area: careful preparation, the right product and tidy work. Call for a quick quote.

  • Stop ends leaking at the end of a run
  • Drips from gutter joints and end caps
  • Fascia boards with gaps between them

Gutter sealing in Winchester

What happens on the day

When we get to you, we compare the joints with what we discussed. If we find something unexpected, we talk it through with you first. After that, the work takes a few hours, depending on the number of joints and the access. For homes and businesses in busier parts of Winchester, parking needs a little planning. Let us know about stairs, lifts or shared entrances too.

  1. We start by tracing the leak and checking the gutter itself is sound.
  2. We clean out the joint and take out the old sealant.
  3. We make sure the joint is dry before sealing.
  4. Gutter or exterior sealant is applied and finished.
  5. We check the run and clear any debris we find while we’re there.

Before we arrive

  • Tell us about access, such as stairs, a lift or high-level joints
  • Move anything stored near the joints
  • Tell us if parking is tricky

Get a quote

Every job is quoted individually, so start by telling us what you need. Just phone 0345 464 0079 or send us an email with the details and send pictures if you have them.

Get a price

Related advice

Gutter sealing in Winchester, done properly

Sealant only bonds to a clean, dry joint. So the old sealant and grime come out first and the joint is dried before the new sealant goes in. If you’re dealing with water dripping where gutter sections meet and old gutter sealant that has let go, we can put it right.

In a large town like Winchester, plenty of buildings are rented or managed, and outside joints are easy to forget. The first sign is normally a dripping gutter end or a stain below a failed joint.

Every job comes with our one-year guarantee.

Place
Winchester (SO22, SO23, SO32, SO21)
Wider area
Hampshire
Cover
A year, on every job
Quote
A clear price before any work starts
Telephone
0345 464 0079
Page updated
26 October 2026
Mr Mastic applicator sealing the top of a white uPVC door frame on a red-brick house

Winchester buildings and the weather

Compared with the north and west, the South East gets less rain, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.

For landlords with property near Winchester station, leaking gutter joints on a rental are best caught before they stain the walls. For site and facilities teams at buildings such as St Bede Church of England Primary School, movement joints, cladding joints and gutters on larger buildings need the same care as a house’s. If you live in an older home near St Swithun-upon-Kingsgate Church, the joints between older walls, newer extensions and the roofline need a sealant that can move.

Winchester is in Hampshire. Winchester gets the same service as everywhere we cover: old sealant removed completely, careful preparation and a 12-month guarantee. Our Hampshire coverage runs to 683 places, Winchester among them. There’s also a page for Southampton, roughly 10 miles from Winchester.

Our applicators cover all of SO22, SO23, SO32 and SO21 for gutter sealing. That includes homes and businesses on The Square, Market Street and Market Lane and the roads around them. Winchester sits on or near the A31 and A32, so getting to you is simple. Other places close to Winchester include Bar End (1 mile south-east), Highcliffe (1 mile east), Hyde (1 mile north), St Cross (1 mile south) and Stanmore (1 mile south-west). Within a short drive, we also cover Eastleigh (6 miles south), Fareham (15 miles south), Andover (13 miles north-west), Totton (13 miles south-west), Chandler's Ford (6 miles south-west) and Hedge End (10 miles south). Winchester is among the bigger towns we cover in Hampshire.

Near you in Winchester

Around Winchester, our work takes us to homes and buildings near Peter Symonds College, The Green Man pub and Leigh House Hospital, among other places. For rail, the closest station is Winchester station, roughly 0.6 miles north. A little further out are Winchester City Museum (less than half a mile north-east) and St John's Rooms And Chapel (less than half a mile east). Open spaces near Winchester include Winnall Moors and Twyford Down.

Map of Winchester © OpenStreetMap contributors

Why it’s worth doing now in Winchester

Water from a leaking joint hits the same spot every time. Left, it can stain walls and lead to damp, so it’s worth sealing early. Busy buildings in Winchester, from hotels to offices, can’t afford rooms out of use for leaks or mould, so failing joints are best replaced on a planned basis.

The cost depends on the amount of work, how hard the old material is to remove and access to the work. We give a clear quote before we start.

What you get with us

  • A choice of colours where the product allows
  • 180+ five-star Google reviews
  • Neat joints and a tidy finish
  • Homes, businesses and hotels

Read our cost guide and what customers say.

For landlords and businesses

Mouldy or split sealant often shows up at the end of a tenancy, and it’s easy to sort out between tenants. We can quote for more than one property at once.

Hotels need rooms back in use, so the work can be planned room by room. We have worked in hotels as well as homes and businesses.

Your questions about gutter sealing in Winchester

Is there a guarantee on gutter sealing in Winchester?

All our work, in Winchester and everywhere else, comes with a 12-month guarantee. We are also fully insured and ARBOMaster approved.

Can you help a landlord with a rental near Winchester station?

Yes. We work for landlords and agents as well as homeowners, and several properties can go on one quote. Just ring 0345 464 0079 or send us an email with the address and what needs doing, and we will give you a clear quote.

Do I need to be at home?

That depends on where the joints are. Inside work needs someone to give us access, while outside work can sometimes be arranged differently.

Do you remove the old sealant?

Yes, every time. New silicone doesn’t stick to old silicone, so any old material comes out before anything new goes in.

Can you reach high gutters?

Low-level work is easiest. For anything higher, we’ll confirm what access is needed before we book.

What sealant do you use?

The product depends on the job: sanitary silicone where it gets wet, and sealants suited to movement or weather elsewhere. Brands we use include Arbo and Everbuild.

What do you need from me for a quote?

The location, the problem and the rough size of the job. If you can, email a few photos.

Do you work in Winchester?

Yes. We are based in Crawley and work across South East England, London and Scotland, Winchester included.

DIY versus a professional finish

If you do try it yourself, take your time over the preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it fails, we can still redo it.

A DIY attempt doesn’t rule out a professional job. We cut it out and start again, so tell us about it when you ask for a quote.

What affects the quote in Winchester

Some jobs are bigger than they look, and some smaller. The main factors:

  • The product the joint needs
  • The amount of work
  • Working hours on commercial sites
  • Any mould that needs treating

Every job is a little different, so we quote each one individually. Size, access and the product the joint needs all play a part, and we will explain the quote if you ask.

What to tell us for a quote

When you contact us, it’s useful to know:

  • The problem you’ve noticed
  • Any previous sealing or DIY work
  • Access, such as stairs, a lift or height
  • Photos by email, if that is easy

It all starts with a short chat. Tell us what’s wrong, where it is and how much there is, and we’ll talk you through what we’d do. When it suits you, phone 0345 464 0079 or send us an email.

Looking after it afterwards

So the new joints stay in good condition:

  • Check that water runs out of the downpipes
  • Clear leaves and moss from the gutters
  • Look at the gutters while it’s raining
  • Don’t lean ladders against the gutter itself

Keep the gutters clear of leaves and moss so water does not sit on the joints. Water left in a gutter tests every joint.

A leaking garage frame lets water reach stored items. A reseal sorts it while the frame is sound.

What the job involves on each surface

Soffit joints

Gaps at soffit joints can let in draughts and insects. We close them with a suitable sealant.

Garage door frames

A fresh seal around the frame stops rain getting in.

20+ yearsMastic and sealant specialists
ARBOMaster approvedApproved applicator for Arbo sealants
Fully insuredDomestic, commercial and hotels
One-year guaranteeOn every job