Hampshire · England
Bagnum Window Mastic
Mastic around window and door frames, sills and patio doors in Bagnum, with a 12-month guarantee on every job. Ask us for a quote.
- A bead that doesn’t match the frame
- Old mastic that has gone black or come away
- Gaps where the sill meets the wall
Keeping the joints in good condition
Aftercare is simple:
- Clean frames with a soft cloth and soapy water
- Clear any debris from frame drain holes
- Paint up to the joint, not over it
- Do not aim a pressure washer at the joints
Try not to touch the new joint while it cures, following the cure time we give you. Keep jet washers away from the frames.
Signs to watch for: cracks in the mastic, gaps you can see light through, damp on the reveal or mould around the inside of the frame. Any of these is worth a call.
Window mastic for homes and businesses in Bagnum
Whether it’s one leaking patio door or every frame on the house, you will get a clear quote before any work starts. Just ring 0345 464 0079 or drop us an email and tell us how many frames there are and how they’re reached. We work on uPVC windows, window sills and aluminium frames, and people most often call us about white mastic on grey or black frames and untidy mastic left by window fitters.
Around Bagnum, many homes face open ground, so their windows and doors take the full weather. That exposure dries out and cracks the mastic around frames and sills faster.
All our work is covered by our one-year guarantee.
- Location
- Bagnum (BH24)
- Region
- Hampshire
- Guarantee
- 12 months on all our work
- Price
- A clear price before any work starts
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
Surface by surface
Timber windows & doors
Timber moves with moisture as well as heat, so the joint must stay flexible. The paint or stain needs to be sound where the sealant meets it.
Patio & French doors
Heavy door frames can move more than windows. The sealant must cope with it.
For landlords and businesses
We also work for businesses, from offices to washrooms and kitchens. For commercial premises, we can talk through working times when we quote.
Failed sealant is one of the commonest items on a check-out report, and it’s quick to put right between tenancies. Several properties can go on one quote.
The process
We bring everything the job needs with us, so you do not need to buy or prepare anything. After a quick look at the joints together, we protect the area and start. It normally takes most of a day for a typical house, less for a few frames. Somewhere like Bagnum 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 confirm safe access to each frame.
- All the failed sealant is cut away, along with any loose debris.
- Frame and wall are cleaned and must be dry before sealing, and primed where the sealant calls for it.
- Backing rod fills deep voids and the sealant goes in on top.
- We tool the joint so water runs off, then clear up.
How to prepare
- Mention any sign-in or site rules at work premises
- Mention any tricky access
- Move anything stored near the joints
How to get a quote
Quotes start with a quick conversation. Tell us what’s wrong, where it is and how much there is. Whenever you’re ready, phone 0345 464 0079 or send us an email.
Advice
Why it’s worth doing now in Bagnum
Choosing the product is half the job. Interior caulk and bathroom silicone aren’t made for exterior frame joints. A low-modulus exterior sealant keeps its stretch through hot and cold weather. In a small place like Bagnum, homes can be exposed to wind and rain, which finds any gap, and older walls, once damp, take a long time to dry.
The cost depends on how much there is to do, how hard the old material is to remove and access to the work. We give a clear quote before work begins, so you know where you stand.
Why book with us
- An ARBOMaster approved applicator
- White, clear, grey or coloured to suit, where the product allows
- Tidy, careful work
- Old sealant always removed completely
Read what affects the cost and what customers say.
What affects the quote in Bagnum
Some jobs are bigger than they look, and some smaller. What affects the quote:
- Mould in or behind the old joints
- The old material and how stubborn it is
- Which sealant suits the joint
- The number of rooms or windows
Leaving a failed joint generally makes the job bigger, not smaller. If you are unsure, phone 0345 464 0079 or drop us an email and we’ll give you an honest view and a quote.
Asking for a quote
Photos help, but a description is a good start. Try to tell us:
- Whether it’s a home or a business
- Any access issues, like height or stairs
- The problem you’ve noticed
- Any previous sealing or DIY work
There’s no standard price list, because every job is different. Instead, we send you a clear quote for your job. To get started, call 0345 464 0079 or send us an email.
Towns and villages near Bagnum
Other services in Bagnum
Should I try it myself first?
Sealing over old silicone is the commonest DIY error. Silicone doesn’t stick to old silicone, so it lifts and traps water and mould underneath. Everything old must be removed first.
A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
Windows and doors in Bagnum
Compared with the north and west, the South East gets less rain, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast. Historic houses like Avon Tyrrell House (about 1.7 miles south-east) are a reminder that the area around Bagnum has older buildings as well as new. Where a home is older, older timber frames in brick or stone need a different approach from a modern uPVC window.
Schools such as Ringwood School are buildings too, and the mastic around its windows and doors needs looking after like any other building’s. Avon Tyrrell House, about 1.7 miles south-east, is one of the historic houses in the wider area around Bagnum, and older homes nearby need a sealant that suits their walls.
Bagnum is about 2 miles south-east of Ringwood, in Hampshire. For window mastic in and around Bagnum, please call 0345 464 0079 or drop us an email for a quick quote. We’re based in Crawley and cover Hampshire, Bagnum included. Our Hampshire coverage runs to 683 places, Bagnum among them. Southampton is on our list too, around 17 miles away.
All of BH24 is covered for window mastic, from the main roads to the quietest streets. Neighbouring places we cover for window mastic include Crow (1 mile north), Upper Kingston (1 mile north-west), Hightown (1 mile north), Foulford (2 miles north) and Ringwood (2 miles north-west). Larger places within reach include Totton (13 miles north-east), Lymington (10 miles south-east), New Milton (6 miles south-east), Barton on Sea (7 miles south-east), Dibden Purlieu (15 miles east) and Marchwood (14 miles east).
Near you in Bagnum
Nearby you will also find St Leonard's Hospital (4.4 miles west). Green spaces nearby include St Catherine's Hill and Linbrook Lake.
Common questions in Bagnum
Do you cover smaller places like Bagnum?
Yes. Bagnum 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.
Can you do window mastic in Bagnum?
Yes. We work across London and the South East, and Bagnum is part of that. Just ring 0345 464 0079 or email us with a few details of the job.
Do you remove the old sealant?
Always. Sealing over old sealant is the main reason resealing fails early, so we never do it.
Does the work come with a guarantee?
Yes, for 12 months. Keeping drainage clear and checking the joints yearly helps them last.
I’m a tenant. Can you help?
We are happy to deal with the tenant, landlord or agent. Get your landlord’s agreement first.
How long should I leave it?
Many sealants skin over quickly but take longer to cure fully. We’ll give you the cure time for the product we used.
Are you insured?
Yes. We are fully insured.
Can you reach windows above the ground floor?
Yes, as long as they can be reached safely. Tell us about access when you get in touch and we will plan for it.