Hampshire · England
Window Mastic in Catisfield
Our applicators work in Catisfield on mastic around window and door frames, sills and patio doors. Old material cut out, joints cleaned and sealed neatly and every job guaranteed for a year.
- Old mastic that has gone black or come away
- Gaps left after new windows were fitted
- Cracked internal joints between frame and plaster
Window mastic in Catisfield, done properly
Most frames have an outside joint and an inside one. The external joint is the weather seal; inside, the joint between frame and plaster stops draughts and tidies the reveal. Either or both can be done. We’re often asked to deal with leaking joints at the ends of sills and black, perished sealant on frames, on patio & French doors, window sills and timber windows & doors.
Homes around Catisfield range from older properties to newer houses, and their windows range just as widely. The right sealant depends on the frame and on what it sits in.
A one-year guarantee comes as standard, so you’re covered after we’ve gone.
- Where
- Catisfield (PO15, PO14)
- Wider area
- Hampshire
- Guarantee
- One year on every job
- Price
- Quoted before any work starts
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
The process
All our tools and materials come with us in the van, so you do not need to buy or prepare anything. Once we’ve agreed what’s being done, the area is protected and the work begins. Most jobs take a morning for a couple of windows and a door. In a smaller place like Catisfield, parking is seldom the issue; lanes, gates and long drives are worth mentioning. If the job is outside, tell us about side access and how high the joints are.
- We start by checking each window and door with you.
- The old mastic is cut out and the surfaces cleaned back.
- Deep gaps are filled with backing rod to set the depth.
- New exterior sealant goes on in a matching colour and is tooled smooth.
- We clear up and check every joint is fully closed.
Preparing for the visit
- Where the joints are inside, avoid wetting them before we arrive
- Mention any tricky access
- Tell us about any previous sealing or DIY attempts
Getting a quote
For a quick quote, get us on the phone, or send an email if you’d rather. Describe what needs sealing and we’ll talk you through the work.
Related advice
What happens if it’s left?
A cracked joint around a frame lets rain into the wall. Over time that can mean damp patches, damaged plaster and rotting timber. A reseal is a much smaller job. In a smaller place like Catisfield, wherever a wall is exposed, a failed outside joint is a real source of damp. Inside, a split seal lets water into floors and panels just as it would anywhere.
A failed joint rarely gets cheaper to fix by waiting, because water and mould keep working on it. If you’re unsure, phone 0345 464 0079 or send us an email and we will give you an honest view and a quote.
Why Catisfield customers choose us
- 20+ years of sealant experience
- An ARBOMaster approved applicator
- A choice of colours where the product allows
- A sealant colour to suit the surroundings
Different surfaces, different methods
Composite doors
A composite door generally sits in a plastic outer frame, so its perimeter joint is sealed much like a window. The bead is colour-matched to the frame.
uPVC windows
Fitters’ mastic on plastic frames is sometimes thin and rushed. It comes out, deep gaps get backing rod and the joint is resealed.
Should I try it myself first?
Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
The biggest DIY mistake is sealing over old sealant. New silicone won’t bond to old, so it lifts and traps water and mould underneath. Everything old must be removed first.
What we are called out for in Catisfield
A lot of older mastic was never designed to stay flexible. Once it’s rigid, every bit of frame movement pulls at it, and a gap opens along one edge.
It’s worth asking for a quote if you see:
- Leaking joints at the ends of sills
- Mastic that’s falling out in pieces
- Draughty joints inside around the window
- Whistling draughts around closed windows
Letting a property close to Fareham station? Then cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets.
What your quote should include
- Who does the work, and how experienced they are
- Are they insured?
- Whether VAT is included
- Which colour the sealant will be
Places near Catisfield
What else we do in Catisfield
Landlord and commercial work in Catisfield
Businesses can book us for washrooms, kitchens, offices and more. For commercial premises, we can talk through working times when we quote.
Hotels need rooms back in use, so we plan the work room by room around your bookings where we can. We’ve worked in hotels as well as homes and businesses.
Your questions about window mastic in Catisfield
Is Catisfield within the area you cover?
Yes. Catisfield is within the area we cover, which takes in towns, villages and rural addresses. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.
Can you help a landlord with a rental near Fareham station?
Yes. We work for letting agents and landlords as well as householders. You can call 0345 464 0079 or send us an email with the details for a clear quote.
How do I get a quote for window mastic in Catisfield?
It depends on the job, so we quote each one individually. To get one, phone 0345 464 0079 or send us an email with a short description of the job.
Do you have sealant for grey or black windows?
Generally, yes. Tell us the frame colour when you get in touch and we’ll use the nearest match.
Do you have insurance?
Yes, we’re fully insured.
Can new window sealant be painted?
It depends on the sealant. Some hybrid sealants can be painted; silicone can’t. Mention any painting plans before any work starts.
Can you do the inside joint as well?
Yes. Draughts often come through the inside gap too, so sealing both is often worthwhile.
Can you reach windows above the ground floor?
Usually, yes. We plan safe access before the job.
Window mastic in Catisfield: local notes
Catisfield 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 the mastic around window and door frames, 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.
Schools such as Ranvilles Infant School are buildings too, and the mastic around its windows and doors needs looking after like any other building’s. Homes close to Church of St Peter include some older properties, and the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
Catisfield is about 1 mile west of Fareham, in Hampshire. Anywhere in PO15, we cover window mastic for homes and businesses. Catisfield is one of 683 towns and villages in Hampshire where we work. Portsmouth is on our list too, around 7 miles away.
Here we cover the PO15 and PO14 postcode area for window mastic. Local streets include Mill Lane, Bradly Road and Harcourt Road. We also cover the places around Catisfield: Heathfield (1 mile east), Titchfield (1 mile west), Titchfield Park (1 mile north-west), Funtley (2 miles north-east) and Little Posbrook (2 miles south-west). Larger places within reach include Winchester (15 miles north), Gosport (4 miles south-east), Havant (10 miles east), Eastleigh (10 miles north-west), Horndean (10 miles north-east) and Totton (13 miles west).
Around Catisfield
Locally, jobs take us to homes and businesses close to Fishermans Arms and The Henry Cort Community College. The closest station to Catisfield is Fareham station, roughly 1.3 miles east. Well-known places in the area include Fareham Shopping Centre (1.9 miles east) and Knowle Hospital (2.2 miles north). The countryside around Catisfield includes Holly Hill Woodland Park and Portsdown Hill.
How we quote for window mastic
For a quick quote, just ask. The main things that affect it are:
- Whether there’s mould to deal with
- The number of rooms or windows
- How easy the joints are to reach
- How much there is to do
Doing several joints on one visit is normally more efficient than separate visits, so tell us about everything that needs sealing. You will get one clear quote for the whole job.
What to tell us for a quote
You do not need to know the technical terms. It helps if you can tell us:
- Access, such as stairs, a lift or height
- Pictures of the joints, sent by email
- Whether it has been sealed before
- How many joints, rooms or windows are involved
Asking for a quote is easy: let us know the job and the location, and roughly how big it is. A few pictures by email make the job easier to understand, and we will take it from there.