Portsmouth · England
Gutter Sealing in Wymering
Gutter sealing across Wymering and nearby, with every bit of old sealant taken out first and a 12-month guarantee.
- Damp on an inside wall under a dripping gutter
- Trim joints where the sealant has failed
- Streaks down the brickwork from a leaking joint
How we handle gutter sealing in Wymering
Failed sealant round a garage door frame lets rain blow in. The frame joint is cut out and resealed using a sealant made for outdoor use. Common call-outs are for end caps that drip every time it rains and wet patches on the wall under a gutter joint, across garage door frames, gutter joints and roofline trims.
Homes around Wymering range from older cottages to newer houses, with walls and rooflines of every type. Older homes need their gutter and trim joints kept tight, newer ones their movement joints.
Every job comes with our one-year guarantee.
- Where
- Wymering (PO6, PO2)
- Region
- Portsmouth
- Cover
- 12 months on all our work
- Quotes
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
How the visit works
We bring everything the job needs with us, so there’s nothing for you to buy. Once we’ve agreed what’s being done, we protect the area and start. It normally takes an hour or two for a few joints, longer for a full run. For a job in Wymering, we agree the time, the access and parking before the day. If the work is outside, the weather plays a part, as sealant needs a dry surface.
- We look at where the water is coming from and check the gutter isn’t broken or sagging.
- We clean out the joint and take out the old sealant.
- We make sure the joint is dry before sealing.
- Gutter or exterior sealant is applied and finished.
- We look along the gutter and clear debris around the joints.
Before we arrive
- Let us know about stairs, lifts or work at height
- Clear the area around the work
- For indoor joints, keep the area dry beforehand if you can
Get a quote
We don’t publish a price list, as no two jobs are quite the same. Instead, your job gets its own clear quote. To arrange one, call 0345 464 0079 or drop us an email.
Related advice
What we are called out for in Wymering
Sealant on fascias and trims weathers like any outdoor joint. It hardens, shrinks and splits after some years.
These are the problems we’re asked about most:
- Damp on an inside wall under a dripping gutter
- Cracked sealant along roofline trims
- End caps that drip every time it rains
- Leaking gutter joints and stop ends
Rented homes near Cosham station change hands often, and a gutter joint that drips onto the wall can turn into a damp complaint, so it’s worth checking.
What to look for in a quote
- Are they insured?
- What the quote includes, VAT included or not
- Which sealant they’ll use, and why
- Whether all the old sealant comes out first
When something else is needed
We’ll always be straight with you, so here’s what sealant can’t fix:
- Blocked downpipes
- A gutter length that has split
- Roof leaks, slipped tiles or failed flashing (a roofer’s job)
If in doubt, call 0345 464 0079 or send us an email and we will say what we think.
Joints and surfaces we work on
- Soffit joints
- Garage door frames
- uPVC fascias
- Roofline trims
- Gutter end caps
- Gutter joints
Outside joints around Wymering
Wymering is within about 1 mile of the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. Both are hard on gutter, fascia and roofline joints, which can dry out and crack sooner where a building faces the weather. 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.
If you look after a building such as Medina Primary School, its movement joints, gutters and trims need looking after like any other building’s. Homes close to Church of St Peter and St Paul include some older properties, and old and new materials meet at the roofline and walls, which is where sealant earns its keep.
Wymering is about 3 miles north of Portsmouth, in Portsmouth. Anywhere in PO6, our applicators can take on gutter sealing. Our Portsmouth coverage runs to 19 places, and Wymering is one of them.
All of PO6 and PO2 is within our area for gutter sealing. Local streets include Dean Road, Deal Road and Park Lane, and we cover them all. With the A397 close by, Wymering is easy for our applicators to reach. We also cover the places around Wymering: Cosham (1 mile south-east), Paulsgrove (1 mile west), Hilsea (1 mile south), Drayton (1 mile east) and Widley (1 mile north-east). Further out, we also cover Portsmouth (3 miles south), Southsea (4 miles south), Milton (4 miles south), Landport (3 miles south), Baffins (3 miles south) and Portsea (4 miles south-west).
Local landmarks in Wymering
Typical jobs here are in homes near Springfield School, UTC Portsmouth and Alexandra Park. There’s a railway station in Wymering itself: Cosham station. A little further out are World War I Remembrance Centre (1.4 miles south-east) and Tricorn Centre (3.1 miles south). For a walk, there’s Portsdown Hill and Southmoor Nature Reserve.
Work for landlords, hotels and businesses
Housing providers, facilities teams and property managers book us too in Wymering and across Portsmouth. We can quote a run of properties together, and we’re fully insured.
From a single let to a portfolio, the work is the same standard: old sealant fully removed, joints prepared properly and a one-year guarantee.
What affects the quote in Wymering
There’s no set price list, because no two jobs are the same. What we look at:
- Which sealant suits the joint
- The number of rooms or windows
- Whether there’s mould to deal with
- Whether the work is at height
Leaving a failed joint generally makes the job bigger, not smaller, as water and mould keep getting in. If you are unsure, call 0345 464 0079 or send us an email for an honest opinion and a quote.
Helping us quote
Photos by email are helpful but not essential. Please mention:
- Where the job is, and your postcode
- Any access issues, like height or stairs
- If it’s domestic, commercial or a hotel
- Whether it has been sealed before
Asking for a quote is easy: let us know the job and the location. A few pictures by email make the job easier to understand, and we will take it from there.
Why act early in Wymering
A dripping gutter joint keeps wetting the same patch of wall. Left, it can stain walls and lead to damp, so it’s worth sealing early. Homes in smaller places like Wymering can face more weather, and failed outside joints let damp into walls. Inside, a split seal lets water into floors and panels just as it would anywhere.
Every job is a little different, so we quote each one individually. The number of joints, how easy they are to reach and the sealant needed all make a difference, and we’ll explain the quote if you ask.
Why choose Mr Mastic in Wymering
- Trusted Arbo and Everbuild sealants
- Full insurance on every job
- Sealant colour chosen to suit
- Colour agreed with you before work begins
Take a look at how sealant jobs are priced or our reviews.
Can I do it myself?
Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and the joint depth matters as much as the finish.
Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
Your questions about gutter sealing in Wymering
Do you work for landlords with property near Cosham station?
Yes, rental work is part of what we do. Just ring 0345 464 0079 or drop us an email and tell us about the property, and we will give you a clear price.
Does the coastal weather in Wymering affect outside sealant?
Coastal weather is harder on outside sealant: there’s more wind-driven rain and, closer to the shore, salt in the air. The right product, a clean joint and the right depth all help it cope.
How long does the job take?
A typical job takes an hour or two for a few joints, longer for a full run, including the preparation. We’ll confirm how long when we quote.
Is the work guaranteed?
There’s a 12-month guarantee on every job.
Can you quote for more than one area?
Yes. Just list everything you need and we’ll quote it together.
Do you work on high-level gutters?
Low gutters are simple to reach. If it’s higher up, let us know and we’ll confirm the access.
Should I try DIY first?
That depends on the joint. Work at height, movement joints, fire-rated gaps and large areas are best left to a professional.
Do I have to be there?
We need access to the joints, so we’ll agree that with you when we book. Indoors, that generally means someone at home.