Southampton · England
Gutter, fascia & soffit sealing in St Mary's, Southampton
Our applicators work in St Mary's on sealing leaking gutter joints, end caps, fascias, soffits and roofline trims. Old sealant removed completely, joints prepared properly and a 12-month guarantee.
- End caps that drip every time it rains
- Quick sealant fixes on gutters that didn’t last
- Open joints in fascias and soffits
Your questions about gutter sealing in St Mary's
Do you work for landlords with property near Southampton Central station?
Yes, rental work is part of what we do. Just call 0345 464 0079 or send us an email and tell us about the property, and we’ll give you a clear quote.
Does living near the coast affect gutter sealing in St Mary's?
Coastal weather is harder on outside sealant: there’s more wind-driven rain and, closer to the shore, salt in the air. Choosing the right sealant for the frame and wall, laid at the right depth, helps it last.
Can I add another job to the visit?
Yes. Tell us about everything you’d like done.
Do you cover St Mary's?
Yes. We cover St Mary's, as part of our work across South East England, London and Scotland. For a quote, phone 0345 464 0079 or drop us an email.
Will sealant fix a dripping gutter joint?
Usually, if the gutter is sound. The joint is cleaned and dried first so the seal holds.
Will sealing fix a sagging gutter?
Not for long. The movement opens the joint again so the gutter has to be refixed first.
Do you do commercial work?
Yes. Commercial and hotel work is a large part of what we do. Working times can be discussed when we quote.
Should I try DIY first?
That depends on the joint. High-level, external movement and fire-rated joints are professional jobs.
Gutter sealing in St Mary's, done properly
Failed sealant round a garage door frame lets rain blow in. We cut out the old sealant and reseal the frame with an exterior sealant. Typical jobs include earlier gutter repairs that have peeled off and failed sealant on a garage door frame, on roofline trims, gutter end caps and garage door frames.
Around St Mary's, garages, outbuildings and extensions all add to the joints on the outside of a home. Gutter ends, garage door frames and the joints where an extension meets the house are typical spots for leaks.
The work is guaranteed for twelve months. If there’s a problem with our work within the year, let us know and we’ll sort it.
- Place
- St Mary's (SO14, SO15, SO18)
- Wider area
- Southampton
- Guarantee
- One year on every job
- Quote
- A clear price before work begins
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Aftercare tips
To keep the joints looking good and working properly:
- Make sure downpipes are not blocked
- Watch the wall under the gutters for staining
- Sort out a dripping joint early
- Look at the gutters while it’s raining
If a gutter starts to sag, get the brackets looked at. Movement will pull the joints open again.
If an end cap is dripping, deal with it before winter. Water down the wall all winter can cause damp.
For landlords and businesses
We also work for businesses, from offices to washrooms and kitchens. For commercial premises, we can talk through working times when we quote.
From a single let to a portfolio, you get the same standard of work: the old material taken out, careful preparation and a 12-month guarantee.
Gutter sealing in St Mary's: local notes
St Mary's is close to the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. That is hard on gutter, fascia and roofline joints, especially on the side facing the sea. With historic houses such as Southampton Tudor House and Garden (about 0.6 miles south-west) nearby, there’s older building stock in the area around St Mary's 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.
Rented homes near Southampton Central station change hands often, and a dripping gutter joint or loose fascia trim is easy to miss until damp shows inside. If you look after a building such as Hope Community School Southampton, movement joints, cladding joints and gutters on larger buildings need the same care as a house’s. For an older house near a landmark such as St Mary's Church, older walls, gutters and the joints where extensions meet them need a flexible sealant.
St Mary's is about 1 mile south of Southampton, in Southampton. If you need gutter sealing in St Mary's, it’s easy to get a quote: please phone 0345 464 0079 or drop us an email. We’re based in Crawley and cover Southampton, St Mary's included. Our Southampton coverage runs to 40 places, and St Mary's is one of them.
Here we cover the SO14, SO15 and SO18 postcode area for gutter sealing. That includes homes and businesses on New Road, Ogle Road and Marsh Lane and the roads around them. Nearby, we also carry out gutter sealing in Northam (1 mile north-east), Inner Avenue (1 mile north), Peartree Green (1 mile east), Southampton (1 mile north) and Bitterne Manor (1 mile north-east). We also work in nearby towns such as Chartwell Green (3 miles north-east), Harefield (3 miles east), Maybush (3 miles north-west), Coxford (3 miles north-west), Lordswood (3 miles north-west) and Eling (4 miles west).
Around St Mary's
In St Mary's, that means homes and buildings near The Joiners pub, Woolston School and Houndwell Park, among other places. For rail, the closest station is Southampton Central station, about 0.8 miles west. Other landmarks nearby include Netley Castle (2.5 miles south-east) and Bargate Guildhall Museum (under half a mile south-west). Not far away are Netley Common.
DIY sealant or a professional job?
Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
The biggest DIY mistake is sealing over old sealant. Silicone doesn’t stick to old silicone, so it peels away and traps moisture behind it. Everything old must be removed first.
Nearby places to St Mary's
Also in St Mary's
What affects the quote in St Mary's
Call for a quick quote. What matters most is:
- The number of rooms or windows
- How much old sealant there is and how hard it is to remove
- Whether there’s mould to deal with
- Working hours on commercial sites
Commercial jobs are quoted on the same basis as homes: the amount of work, the access and the products needed. Call for a quick quote and we’ll explain what it covers.
What to tell us for a quote
Photos by email are helpful but not essential. Try to tell us:
- The type of property
- What the problem is, such as mould, gaps, leaks or cracking
- How we’d reach the joints
- A few pictures by email, if you can
A good description makes for an accurate quote. Tell us where the job is, what’s wrong and how much there is, and add pictures by email if you can.
How the job changes by surface
Gutter end caps
Stop ends hold back water at the end of a run. A failed seal makes them leak.
Roofline trims
Sealing roofline trims is joint work only. A roofer deals with the roof itself.
What happens if it’s left?
A dripping gutter joint keeps wetting the same patch of wall. Left, it can stain walls and lead to damp so early sealing is worthwhile. Around St Mary's, water from a failed joint in an older home can soak into timber and plaster, which is far harder to put right than the sealant itself.
Every job is a little different, so each one gets its own quote. The number of joints, how easy they are to reach and the sealant needed all play a part.
Why choose Mr Mastic in St Mary's
- Experience in homes, commercial sites and hotels
- Over 20 years’ experience
- 4.9 on Google from 180+ five-star reviews
- Sealant colour chosen to suit
See what affects the cost and customer reviews.
What we do, step by step
You don’t need to clear the whole room or building, just the space around the work. We protect the rest, and the job takes a few hours, depending on the number of joints and the access for a typical job. Parking around St Mary's is normally easier than in a town centre, but mention any lanes, gates or long drives. If the job is outside, tell us about side access and how high the joints are.
- First we trace the drip and check the gutter is not damaged.
- The old sealant and dirt are cleaned out of the joint.
- The joint is dried before sealing.
- A gutter sealant is applied to the joint.
- The gutter is checked and debris around the joints cleared.
Before we arrive
- Let us know if you’ve seen damp or leaks
- Mention if the joints have been sealed before
- For business premises, tell us about site rules or sign-in
Get a quote
To get a quote, call 0345 464 0079 or send us an email and tell us where the job is and what the problem looks like. We’ll send you a clear quote before any work starts.