Hampshire · England
Gutter, fascia & soffit sealing in Gosport, Hampshire
Sealing leaking gutter joints, end caps, fascias, soffits and roofline trims for homes and businesses in Gosport and across Hampshire. ARBOMaster approved applicators, fully insured, with a one-year guarantee.
- Damp on an inside wall under a dripping gutter
- Water dripping where gutter sections meet
- Dripping gutter ends
Gutter sealing in Gosport
A leaking gutter joint marks the wall and wets the ground underneath. Often a reseal is enough if the gutter isn’t damaged. We work on soffit joints, roofline trims and gutter joints, and the jobs we see most are earlier gutter repairs that have peeled off and drips from gutter joints and end caps.
Gosport mixes older houses and their gutters with newer estates of brick, render and uPVC trims. Gutter joints, fascia trims and the movement joints in newer brickwork all need sealant that can flex.
Every job is covered by our 12-month guarantee, wherever you are in Hampshire.
- Location
- Gosport (PO12, PO13)
- Region
- Hampshire
- Guarantee
- One year on every job
- Price
- A clear quote up front
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Surface by surface
Soffit joints
Soffit joints are sealed in a colour to suit, where one is available.
Gutter joints
Gutter joints move and sit in water. A dedicated gutter sealant suits them.
What happens on the day
We keep the work tidy and contained to the area we are working on. Expect the work to take a few hours, depending on the number of joints and the access, and we explain the cure time before we leave. A visit in Gosport needs access to the work and a place to park close by. For outside work, let us know about side access, gates and any upper-floor joints.
- We start by tracing the leak and checking the gutter itself is sound.
- The joint or trim is cleaned out and old sealant removed.
- The joint is dried, because sealant won’t bond to a wet surface.
- Gutter or exterior sealant is applied and finished.
- The run is checked and any debris near the joints is cleared.
Preparing for the visit
- Tell us about any water getting in
- Tell us if parking is tricky
- Let us know about stairs, lifts or work at height
Getting a quote
We quote each job on its own, so the first step is telling us about yours. Simply ring 0345 464 0079 or send us an email and describe the job.
Related advice
Work for landlords, hotels and businesses
If you manage several properties in or around Gosport, jobs at different addresses can go on one quote. Just tell us the addresses and what each one needs.
Hotels need rooms back in use, so we plan the work room by room. We have worked in hotels as well as homes and businesses.
Why it’s worth doing now in Gosport
A new garage door is not needed for a leaking frame. Resealing the frame joint is often enough. In Gosport, as anywhere, most leaks start as a small gap in a joint, and they’re far easier to fix early.
Every job is a little different, so each one gets its own quote. Size, access and the product the joint needs all play a part, and we’ll explain the quote if you ask.
Why choose Mr Mastic in Gosport
- Tidy, careful work
- Fully insured
- We never seal over old sealant
- Quality sealants from Arbo and Everbuild
Read our cost guide or what customers say.
Common problems we fix in Gosport
Gutter joints rely on seals that age. Sun and cold make the gutter expand and contract, and old seals crack or slip.
The most common problems we see are:
- Dripping gutter ends
- Drips from gutter joints and end caps
- Damp patches inside below a leaking gutter
- Earlier gutter repairs that have peeled off
Homes close to St Faith's Church include some older properties, and an extension built onto an older house moves differently, and the joint between them takes the strain.
What your quote should include
- What preparation is included
- Whether they seal over old material or remove it
- The length of the guarantee
- When the joint can take water or movement
Looking after it afterwards
Looking after new joints is easy, and it makes a real difference:
- Deal with a drip before winter
- Glance at the soffit joints now and then
- Check the gutters during heavy rain
- Keep the gutters clear of debris
Clear the gutters once or twice a year so water doesn’t sit on the joints. Standing water strains every seal.
A leaking garage frame lets water reach stored items. A reseal sorts it while the frame is sound.
When it isn’t the sealant
It helps to know what we cannot do too:
- Rotten or damaged fascia boards
- Problems with the roof covering
- Brackets that have snapped or loosened
If in doubt, ring 0345 464 0079 or drop us an email and we will say what we think.
Surfaces we seal
- Garage door frames
- uPVC fascias
- Roofline trims
- Soffit joints
- Gutter joints
- Gutter end caps
Nearby places to Gosport
Other services in Gosport
Gosport questions
Do you work for landlords with property near Portsmouth Harbour station?
Yes, we work for landlords and agents. You can phone 0345 464 0079 or email us with the address and a few details, and we will give you a fixed price before any work starts.
Does living near the coast affect gutter sealing in Gosport?
Near the sea, outside joints face more wind, rain and salt than they would inland, so preparation and the right sealant matter all the more. Walls facing the sea are normally the first to need attention.
Do you guarantee gutter sealing?
All our work carries a one-year guarantee, and we are fully insured.
What information do you need?
Where the job is, what the problem is and roughly how big it is. Photos by email help too.
Will the old sealant be removed?
Always. Sealing over old sealant is the main reason resealing fails early, and it’s something we never do.
Will it make a mess?
Not at all. We work neatly, protect the area around the joints and tidy up afterwards.
Do you come to Gosport?
Yes, we do. Gosport is part of the area we cover, and the service is the same as everywhere else.
Does someone need to be in?
That depends on where the joints are. For work indoors, someone needs to let us in.
Gutter sealing in Gosport: local notes
Gosport is within about 2 miles of the coast, and homes near the sea take more wind-driven rain, with salt in the air closer to the shore. That is hard on gutter, fascia and roofline joints, especially on the side facing the sea. London and the South East are among the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
Managing a site like Brockhurst Primary School? Then movement joints, cladding joints and gutters on larger buildings need the same care as a house’s. Rented homes near Portsmouth Harbour station change hands often, and a gutter joint that drips onto the wall can turn into a damp complaint, so it’s worth checking.
Gosport is in Hampshire. Anywhere in PO12, we cover gutter sealing for homes and businesses. Our area takes in 683 places across Hampshire, from the larger towns to small villages.
Every address in PO12 and PO13 is covered for gutter sealing. You will find streets such as Station Road, St Johns Square and Cockleshell Square, and we cover them all. Gosport is on the A32 and B3333, so it’s easy for us to get to with everything needed for gutter sealing. If you are just outside Gosport, we cover Forton (1 mile south-east), Elson (1 mile north), Priddy's Hard (1 mile east), Bridgemary (1 mile north-west) and Rowner (2 miles north-west). Further out, we also cover Havant (8 miles north-east), Eastleigh (14 miles north-west), Fareham (4 miles north-west), Horndean (9 miles north-east), Hedge End (10 miles north-west) and Waterlooville (8 miles north-east). Gosport is one of the larger places we cover in Hampshire.
Local landmarks in Gosport
Typical jobs here are in homes near St Vincent College, Brune Park Community School and Queen's Head pub. Gosport’s nearest station is Portsmouth Harbour station, about 2 miles east of the centre. Other landmarks nearby include Search (1.3 miles south-east) and Gosport War Memorial Hospital (0.8 miles south). The countryside around Gosport includes Portsdown Hill and West of the River Alver.