Isle of Wight · England
Window Mastic in Yarmouth
Problem with your window and door frames in Yarmouth? We cut out the old, prepare the joints and apply the right sealant.
- Mastic that has split away from the wall
- Cracked sealant at the sill ends
- Sealant in the wrong colour for the frame
How we handle window mastic in Yarmouth
Most frames have an outside joint and an inside one. The external joint is the weather seal; the internal joint closes the gap to the plaster and stops draughts. Either or both can be done. Typical jobs include a bead that doesn’t match the frame and cracked internal joints between frame and plaster, on composite doors, window sills and timber windows & doors.
Outdoor sealant needs dry, clean surfaces, so work on frames around Yarmouth is planned for dry weather. Let us know about access to all the frames, upstairs ones included.
Every job is covered by a one-year guarantee, wherever you are in the Isle of Wight.
- Place
- Yarmouth (PO41)
- Region
- Isle of Wight
- Guarantee
- 12 months on all our work
- Quotes
- A clear price before we start
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Landlords, agents and businesses in Yarmouth
Hotels need rooms back in use, so the work can be planned room by room. We’ve worked in hotels as well as homes and businesses.
Housing providers, facilities teams and property managers book us too. We can quote a run of properties together.
When something else is needed
In fairness, some problems need a different trade:
- Faulty window hardware
- Misting between the panes of a double-glazed unit (that needs a new unit)
- Damp problems in the wall away from the window
Not sure which it is? You can phone 0345 464 0079 or send us an email and we will tell you honestly before you book.
What we seal
- Composite doors
- uPVC windows
- Timber windows & doors
- Patio & French doors
- Aluminium frames
- Window sills
Why act early in Yarmouth
A cracked joint around a frame lets rain into the wall. Left long enough, it can stain inside walls, spoil plaster and rot wooden frames. Resealing now is a small job by comparison. Around Yarmouth, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.
What you pay reflects the work, not a rough estimate. That’s why we ask about the job first and agree the price before starting.
Why us?
- Colour agreed with you before any work starts
- We are fully insured
- Sanitary silicone with an anti-fungal additive in wet areas
- We never seal over old sealant
Take a look at what affects the cost or customer reviews.
Should I try it myself first?
If you’ve already had a go yourself, that is fine. We cut it out and start again.
Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.
Yarmouth questions
Do you cover smaller places like Yarmouth?
Yes. Yarmouth is within the area we cover, which takes in towns, villages and rural addresses. Our work covers London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
I let a flat near Lymington Pier station. Can you help?
Yes, landlords and agents are among the people we work for. Just call 0345 464 0079 or send us an email with the address and what needs doing, and we’ll give you a clear quote.
Where do you work from?
Mr Mastic is based in Crawley. We cover Yarmouth and the rest of the Isle of Wight, along with the rest of our area.
Can you do several jobs on one visit?
Yes, we can. Several rooms, windows or areas can go on one quote.
Do the sealants smell?
Some sealants have a smell while they cure. Opening a window helps.
Can new sealant go over the old?
No. Fresh sealant does not stick to old sealant, and anything trapped underneath, including mould and water, stays there. We remove it all first.
Which products do you use?
Each joint gets the product that suits it. Movement, water and weather all affect the choice.
Do you guarantee window mastic?
Yes, for 12 months. A yearly look at the joints helps them last.
Windows and doors in Yarmouth
Yarmouth is close to the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. That’s hard on the mastic around window and door frames, especially on the side facing the sea. With historic houses such as Mottistone Manor (about 4.8 miles south-east) nearby, there’s older building stock in the area around Yarmouth as well as newer homes. Where a home is older, older frames set in brick or stone need a sealant that suits them, and sometimes that’s traditional sand mastic.
If you let a flat or house near Lymington Pier station, cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets. Homes close to St. James' Church include some older properties, and the joint between an old wall and a newer frame is generally the first place rain gets in. If you look after a building such as Yarmouth Church of England Aided Primary School, its window and door frames need their mastic kept sound, just like a home’s.
Yarmouth is about 4 miles south-east of Lymington, in the Isle of Wight. Our applicators cover window mastic for homeowners, landlords and businesses in Yarmouth, as part of our work across the Isle of Wight. Yarmouth is one of 125 towns and villages in the Isle of Wight we cover. You can also see our page for Southampton, roughly 15 miles from Yarmouth.
All of PO41 is within our area for window mastic. Window mastic is available to properties on High Street, Station Road and Alma Place and the roads around them. With the A3054 close by, Yarmouth is simple for us to get to for window mastic. Nearby, we also carry out window mastic in Bouldnor (1 mile east), Cranmore (2 miles east), Hamstead (3 miles east), Shalfleet (3 miles east) and East End (5 miles north). Further out, we also cover Newport (9 miles east), Ryde (15 miles east), Cowes (9 miles north-east), Sandown (15 miles east), Shanklin (15 miles east) and Ventnor (15 miles south-east). Remote and island addresses need a little more planning, so please mention your location when you phone 0345 464 0079 or email us.
Local landmarks in Yarmouth
Typical jobs here are in homes near Bugle Hotel. The nearest railway station is Lymington Pier station, roughly 3.9 miles north. Nearby you’ll also find Yarmouth Castle (under half a mile north-west) and Ferguson Family Museum (1.2 miles south-west). Not far away are Lymington and Keyhaven Marshes Nature Reserve and Afton Down.
The process
Every visit runs the same way: we look at the joints together, protect the area around them, carry out the job and clear up. It generally takes a morning for a couple of windows and a door. Somewhere like Yarmouth needs a little journey planning: tell us about narrow lanes, gates, long drives and where we can park. Everything for the job comes with us, so a second trip is avoided where possible.
- First we look at every frame and agree the list.
- We remove the old mastic and clean the frame and the wall.
- We fit backing rod in deep gaps so the sealant is the right depth.
- We apply a weatherproof sealant to match the frame and tool it neatly.
- We clear up and check every joint is fully closed.
Before we arrive
- On commercial sites, let us know about site rules
- Mention any leaks or damp you’ve noticed
- Keep pets and children clear of the area while we work
Ask for a quote
For a quote, phone 0345 464 0079 or email us with the location and a short description of the problem. We will give you a clear price before any work starts.
Related advice
Quotes for window mastic in Yarmouth
We don’t publish a price list, because jobs vary so much. What we look at:
- Whether the work is at height
- When we can work, for business premises
- Any mould that needs treating
- The product the joint needs
A failed joint rarely gets cheaper to fix by waiting, because water and mould keep working on it. If you’re unsure, call 0345 464 0079 or send us an email and we’ll give you an honest view and a quote.
What we need to know
Photos by email are helpful but not essential. Please mention:
- The address or postcode of the job
- Whether it’s a home or a business
- The rough size of the job
- Any access issues, like height or stairs
It all starts with a short chat. Describe the problem, the location and the size of the job, and we will explain how we’d tackle it. Whenever you are ready, phone 0345 464 0079 or send us an email.
Surface by surface
Composite doors
An exposed front door gets wind-driven rain. Those corners get the most care.
Window sills
Every drop off the glass ends up on the sill, so the sill ends and the joint under the frame are vital. They’re cut out and resealed with exterior sealant.