Southampton · England
Gutter Sealing in Northam
Sealing leaking gutter joints, end caps, fascias, soffits and roofline trims for Northam, backed by a 12-month guarantee. Ask us for a quote.
- Streaks down the brickwork from a leaking joint
- Water dripping where gutter sections meet
- Old gutter sealant that has let go
Questions from Northam
Do you work for landlords with property near Bitterne station?
Yes, landlords and agents are among the people we work for. You can phone 0345 464 0079 or email us with the details for a clear quote.
Do you cover smaller places like Northam?
Yes, smaller places are covered as well as towns. Our work covers London and the South East. Just mention lanes, gates or anything else about the route when you book.
Do you work for hotels and businesses?
Yes. Commercial and hotel work is a large part of what we do, as well as homes. We can talk about working times when we quote.
Do the sealants smell?
Sometimes, a little. It fades as the sealant cures.
Will you leave a mess?
We keep the work tidy. Nearby surfaces are protected, and the area is left clean when we finish.
Do you install new fascias or gutters?
No. We seal joints; replacing gutters and fascias needs a gutter or roofline installer.
Where do you work from?
We are a Crawley-based firm. Our area covers South East England, London and Scotland.
Will sealing fix a sagging gutter?
Sealant won’t hold a sagging gutter. A gutter installer needs to refix it, and we will tell you if that is what we find.
Gutter sealing in Northam
Gaps along uPVC fascias and soffits look untidy and can let in water and draughts. They’re sealed in a matching colour where one is available. We work on gutter end caps, soffit joints and garage door frames, and people most often call us about failed sealant on a garage door frame and stop ends leaking at the end of a run.
Outbuildings, garages and conservatories around homes in places like Northam add more joints to look after. Gutter ends, garage door frames and the joints where an extension meets the house are typical spots for leaks.
We stand behind the work with a 12-month guarantee, so you are not left on your own once the job is done.
- Where
- Northam (SO14, SO19, SO18)
- Region
- Southampton
- Guarantee
- A year, on every job
- Price
- Quoted before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Landlord and commercial work in Northam
Water getting past a failed joint can damage the building, which is a bigger problem in a rented property. Resealing at the right time is simple maintenance.
We work for letting agents and landlords as well as householders. Sealant work between tenants keeps a property looking cared for before the next move-in.
Surface by surface
Roofline trims
Trims along the roofline are often finished with sealant. When it splits, water can get behind.
Soffit joints
We choose a sealant colour that suits the soffit.
Can I do it myself?
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
Too much sealant is as bad as too little. A thick, smeared bead looks untidy and doesn’t move well, and the joint depth matters as much as the finish.
Leave it or put it right?
Sealing over a dirty, wet joint is a quick fix that rarely lasts, but it soon lets go. Cleaning out and drying the joint first is what makes it last. Around Northam, 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.
Some things make a job bigger or smaller: how much old sealant there is and how stubborn it is, whether mould needs treating, and whether we need extra access for height. We take all of that into account in your quote.
Why choose Mr Mastic in Northam
- Full insurance on every job
- Experience in homes, commercial sites and hotels
- Trusted Arbo and Everbuild sealants
- 4.9 on Google from 180+ five-star reviews
See our cost guide or our reviews.
Places near Northam
More services for Northam
Outside joints around Northam
Northam is close to the coast, and homes near the sea take more wind-driven rain, with salt in the air closer to the shore. Both are hard on gutter, fascia and roofline joints, which can dry out and crack sooner where a building faces the weather. Compared with the north and west, the South East gets less rain, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
Rented homes near Bitterne station change hands often, and a dripping gutter joint or loose fascia trim is easy to miss until damp shows inside. For site and facilities teams at buildings such as Bitterne Manor Primary School, movement joints, cladding joints and gutters on larger buildings need the same care as a house’s. In the older streets around Church of St Augustine, old and new materials meet at the roofline and walls, which is where sealant earns its keep.
Northam is about 1 mile south-east of Southampton, in Southampton. Every kind of property in Northam is covered for gutter sealing, old or new, large or small. Every job comes with our 12-month guarantee. Across Southampton, we cover 40 places, Northam among them.
Every address in SO14, SO19 and SO18 is within our area for gutter sealing. Gutter sealing is available to properties on Sea Road, Lumpy Lane and Cross Road and the roads around them. Other places close to Northam include Peartree Green (1 mile south), Bitterne Manor (1 mile north), Itchen (1 mile south-east), St Mary's (1 mile south-west) and Bitterne (1 mile east). We also work in nearby towns such as Regents Park (3 miles west), Maybush (3 miles north-west), Coxford (3 miles north-west), Lordswood (3 miles north-west), Eling (5 miles west) and Rownhams (4 miles north-west).
Around Northam
Typical jobs here are in homes near Inspire Enterprise Academy, East Park and The Engineers Arms, among other places. For rail, the closest station is Bitterne station, roughly 0.6 miles north. Nearby you’ll also find Bitterne Local History Society Heritage And Research Centre (0.8 miles east) and Marlands Shopping Centre (1.2 miles west). Open spaces near Northam include Netley Common.
What affects the quote in Northam
There’s no set price list. What we look at:
- How much old sealant there is and how hard it is to remove
- Whether the work is at height
- The number of rooms or windows
- Which sealant suits the joint
Doing several joints on one visit is usually more efficient than separate visits. You will get one clear quote for the whole job.
Asking for a quote
To help us quote quickly, please include:
- The problem you’ve noticed
- A few photos by email, if you can
- Where the job is, and your postcode
- Access, such as stairs, a lift or height
Asking for a quote is easy: tell us what needs doing and where and its rough size. A few photos by email make the job easier to understand.
Keeping the joints in good condition
So the new joints stay in good condition:
- Get a dropping gutter looked at quickly
- Check that water runs out of the downpipes
- Deal with a drip before winter
- Clear leaves and moss from the gutters
Check the joints after heavy rain now and then. Drips are easiest to spot while it’s raining.
The sooner a gutter leak is sealed, the less water reaches the wall. We’ll let you know if the gutter needs more than sealant.
What happens on the day
Good joint work is mostly preparation, so that is where we spend the time. Joints are cleaned back and dried before anything new goes in. In total, it normally takes an hour or two for a few joints, longer for a full run. In a smaller place like Northam, parking is seldom the issue; lanes, gates and long drives are worth mentioning. For outside work, side access and the height of the joints help us plan.
- We start by tracing the leak and checking the gutter itself is sound.
- The joint or trim is cleaned out and old sealant removed.
- We make sure the joint is dry before sealing.
- An exterior or gutter sealant is applied to the joint.
- The run is checked and any debris near the joints is cleared.
Before we arrive
- Tell us about any water getting in
- Tell us if parking is tricky
- Try not to wet indoor joints just before the visit
Get a quote
It all starts with a short chat. Describe the problem, the location and the size of the job, and we’ll explain how we’d tackle it. Whenever you’re ready, ring 0345 464 0079 or email us.