Kent · England
Southfleet Gutter Sealing
Sealing leaking gutter joints, end caps, fascias, soffits and roofline trims for homes and businesses in Southfleet and across Kent. ARBOMaster approved applicators, fully insured, with a 12-month guarantee.
- Garage door frames letting rain in
- Old gutter sealant that has let go
- Water dripping where gutter sections meet
About our gutter sealing in Southfleet
For gutter sealant to hold, the joint has to be clean and dry. So the old sealant and grime come out first, then dry the joint before sealing. If you are dealing with trim joints where the sealant has failed and fascia boards with gaps between them, we can put it right.
Around Southfleet, older buildings can be stone, brick or timber-framed, many with extensions added later. The joints where those materials meet are the weak points.
All our work comes with a 12-month guarantee, wherever you are in Kent.
- Where
- Southfleet (DA13)
- Region
- Kent
- Guarantee
- 12 months on all our work
- Price
- Quoted before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
What affects the cost of gutter sealing
Every job gets its own quote. These are the things that affect it:
- The number of rooms or windows
- Which sealant suits the joint
- The number and length of the joints
- Working hours on commercial sites
Commercial jobs are quoted on the same basis as homes: the amount of work, how we reach it and what it needs, plus any working-time requirements on site. Call for a quick quote and we will go through it with you.
Helping us quote
Photos help, but a description is a good start. Please mention:
- How we’d reach the joints
- If it’s domestic, commercial or a hotel
- Whether it has been sealed before
- What the problem is, such as mould, gaps, leaks or cracking
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 photos if you have them.
Gutter sealing in Southfleet: local notes
Rainfall in the South East is lower than in much of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind. With historic houses such as Cobham College (about 3.6 miles south-east) nearby, there’s older building stock in the area around Southfleet as well as newer homes. Where a home is older, older walls and rooflines need a sealant that moves with them and suits the material.
For site and facilities teams at buildings such as Sedley's Church of England Voluntary Aided Primary School, its movement joints, gutters and trims need looking after like any other building’s. Rented homes near Longfield station change hands often, and leaking gutter joints on a rental are best caught before they stain the walls.
Southfleet is about 2 miles south-west of Northfleet, in Kent. From the centre of Southfleet to the outskirts, we cover gutter sealing for every kind of property, from flats and houses to offices and hotels. Southfleet is one of 922 places in Kent where we work for gutter sealing. We also work in London, around 19 miles away.
Here we cover the DA13 postcode area for gutter sealing. That includes homes and businesses on Red Street, Gloxinia Road and Brakefield Road. We also cover Hook Green (1 mile south-west), Northfleet Green (1 mile east), Betsham (1 mile north-west), Painters Ash (1 mile north-east) and Springhead (1 mile north). Further out, we also cover Maidstone (13 miles south-east), Dartford (5 miles north-west), Sevenoaks (11 miles south-west), Gravesend (3 miles north-east), Tonbridge (15 miles south) and Swanley (7 miles west).
Near you in Southfleet
We work in homes and buildings around Northfleet School for Girls, Black Lion pub and Longfield Chalk Bank. For rail, the closest station is Longfield station, about 1.5 miles south-west. Other landmarks nearby include Gravesham Community Hospital (2.7 miles north-east) and Bluewater (2.9 miles north-west). Not far away are Sawyers Lake.
Southfleet: your questions answered
Do you work for landlords with property near Longfield station?
Yes, landlords and agents are among the people we work for, and several properties can go on one quote. You can phone 0345 464 0079 or send us an email with the details for a clear quote.
Is Southfleet in your area for gutter sealing?
Yes, Southfleet is within the area we cover. Our work covers London and the South East. Just call 0345 464 0079 or send us an email with a few details of the job, and we’ll give you a clear quote.
Can I do it myself?
That depends on the joint. Work at height, movement joints, fire-rated gaps and large areas are best left to a professional.
Where are you based?
Mr Mastic is based in Crawley. Our applicators cover Southfleet.
When is the sealant fully cured?
Most sealants are touch-dry well before they’re fully cured. We’ll tell you how long to leave the joint before we leave.
How much does gutter sealing cost in Southfleet?
There’s no set price, as it depends on the job: its size, the old material, access and the product needed. We agree the price before any work begins.
Will sealing fix a sagging gutter?
It will not last. The joint will pull apart so the gutter has to be refixed first.
Do I need to be at home?
For indoor joints, yes, someone needs to let us in. Once we have agreed the job, you do not need to watch us work.
Leave it or put it right?
Sealant will not clear a blocked downpipe. We look at what’s really happening and point you to the right trade if needed. Older cottages and farmhouses around Southfleet can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
Rather than a set price list, we price the job in front of us: the amount of work, the old material and the access. You’ll know the price before we begin.
Why book with us
- Full insurance on every job
- We never seal over old sealant
- Experience in homes, commercial sites and hotels
- Approved under the ARBOMaster scheme
Take a look at our cost guide or customer reviews.
Landlord and commercial work in Southfleet
Mouldy or split sealant often shows up at the end of a tenancy. We can quote for more than one property at once.
A neglected joint can let water reach the structure, which matters even more when someone else lives there. Keeping joints in good order is simple maintenance that we can handle for you.
Honest limits
We’d rather tell you now than do work that won’t last, so these are the limits:
- Roof leaks, slipped tiles or failed flashing (a roofer’s job)
- Gutters that have dropped or pulled away
- Cracked, split or warped gutter sections
Not sure which it is? You can phone 0345 464 0079 or send us an email and we’ll tell you honestly before booking.
Joints and surfaces we work on
- uPVC fascias
- Roofline trims
- Garage door frames
- Gutter end caps
- Soffit joints
- Gutter joints
What we’re called out for in Southfleet
A sealant applied to a damp or dirty joint will not bond. Rushed repairs often don’t last long for this reason.
Look out for any of the following:
- Stop ends leaking at the end of a run
- Internal damp traced to a gutter joint
- Drips from gutter joints and end caps
- Rain getting in around a garage door
Homes close to Church of St Nicholas include some older properties, and an extension built onto an older house moves differently, and the joint between them takes the strain.
Before you book anyone
- Whether VAT is included
- What happens if they find a problem under the old sealant
- How much experience the applicator has
- Whether the sealant suits the joint
Nearby places to Southfleet
More services for Southfleet
The process
On the day, we start by going over the job with you. Surfaces next to the work are protected before any work begins. Most jobs take a few hours, depending on the number of joints and the access. Somewhere like Southfleet needs a little journey planning: let us know about lanes, gates and parking. Everything for the job comes with us, so a second trip is avoided where possible.
- First we agree which joints need sealing.
- We clean out each joint.
- The joints are dried.
- We apply exterior or gutter sealant and finish it neatly.
- We check our work before we leave.
Getting ready for the visit
- Let us know about earlier repairs to the joints
- Let us know if you’ve seen damp or leaks
- Where the joints are inside, avoid wetting them before we arrive
Ask for a quote
Need a quote? Please call 0345 464 0079 or email us with a few details. We’ll explain what we’d do and send you a clear quote before we start.
Read more
Keeping the joints in good condition
Aftercare is simple, and it makes a real difference:
- Look for streaks or damp on the wall below gutters
- Clear leaves and moss from the gutters
- Get a dropping gutter looked at quickly
- Glance at the soffit joints now and then
Keep the gutters clear of leaves and moss so water does not sit on the joints. Standing water strains every seal.
If an end cap is dripping, deal with it before winter. Water down the wall all winter can cause damp.