Hampshire · England
Holybourne Window Mastic
Window mastic across Holybourne and nearby, with every bit of old sealant taken out first and a 12-month guarantee.
- Black, perished sealant on frames
- Draughty joints inside around the window
- A bead that does not match the frame
About our window mastic in Holybourne
Mr Mastic’s applicators have more than 20 years’ experience with window and door sealants. We’re ARBOMaster approved and fully insured, and we give a 12-month guarantee on the work. If you are dealing with untidy mastic left by window fitters and cracked internal joints between frame and plaster, we can help, on window sills, composite doors and timber windows & doors alike.
In a village or hamlet like Holybourne, older cottages and farmhouses often have timber windows set in stone or brick. Older buildings like these don’t always suit modern silicone, so the sealant has to be chosen to suit the building.
The work is covered for a year after we finish. If anything is not right with it, phone 0345 464 0079 or email us.
- Place
- Holybourne (GU34)
- Region
- Hampshire
- Cover
- One year on every job
- Price
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
Holybourne questions
Do you cover Holybourne for window mastic?
Yes. We work across London and the South East, and Holybourne is part of that. Just phone 0345 464 0079 or drop us an email with a few details of the job, and we’ll give you a clear quote.
Do you work for landlords with property near Alton station?
Yes, landlords and agents are among the people we work for, and several properties can go on one quote. Just call 0345 464 0079 or drop us an email with the address and what needs doing, and we’ll give you a clear quote.
Can you quote for more than one area?
Yes. Just list everything you need and we’ll quote it together.
Can I paint over the new sealant?
Silicone generally won’t take paint. If you plan to paint, tell us first and we can use a paintable sealant where it suits the joint.
Does someone need to be in?
It depends on the job. Inside work needs someone to give us access.
Can new sealant go over the old?
No. New silicone will not bond to old silicone, and anything trapped underneath, including mould and water, stays there. It all has to come out first.
Are you an approved applicator?
Yes. We hold ARBOMaster approved applicator status, and we are fully insured.
How much does window mastic cost in Holybourne?
It depends on the job, so we quote each one individually. To get one, ring 0345 464 0079 or send us an email and let us know what needs doing and where.
What we do, step by step
On the day, we look over the joints with you first, so you know exactly what we’re doing. We protect the surfaces around the joints before any work begins. The work normally takes a morning for a couple of windows and a door. In a small place like Holybourne, access is usually the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We check how each frame can be reached safely.
- Old, cracked mastic is removed completely, along with any loose debris.
- The surfaces are cleaned and left dry.
- Deep voids are backed, then the sealant is gunned in.
- The joint is shaped to shed water and the area tidied.
Preparing for the visit
- Let us know about parking restrictions
- Try not to wet indoor joints just before the visit
- Plan for the work area to be out of bounds to pets and children
How to get a quote
Every job is quoted individually, so the first step is telling us about yours. Just call 0345 464 0079 or drop us an email with the details and send photos if you have them.
Advice
Why deal with it now?
Redecorating is a good moment to renew the mastic. Fresh joints finish the job neatly, and it’s easier while the walls are being worked on anyway. Older cottages and farmhouses around Holybourne can have timber floors and frames, where water from a failed joint can cause rot if it’s left.
What you pay reflects the work, not guesswork. That is why we ask about the job first and give you a clear quote before we start.
Why book with us
- A sealant colour to suit the surroundings
- Rated 4.9 stars on Google
- We agree the colour with you first
- We never seal over old sealant
See what affects the cost and what customers say.
Landlords, agents and businesses in Holybourne
Letting agents and landlords in Holybourne can book us as well as householders. Resealing between tenancies keeps a property looking cared for.
A neglected joint can let water reach the structure, which matters even more when someone else lives there. Keeping joints in good order is simple maintenance.
When something else is needed
Honest advice matters more to us than a booking, so here’s what new sealant won’t do:
- A sash or casement that will not close properly
- Misting between the panes of a double-glazed unit (that needs a new unit)
- Soft or decayed wood in the frame
If in doubt, phone 0345 464 0079 or send us an email and we’ll say what we think.
What we seal
- Patio & French doors
- Timber windows & doors
- Window sills
- uPVC windows
- Aluminium frames
- Composite doors
Nearby places to Holybourne
More services for Holybourne
How we quote for window mastic
The price is agreed before any work begins. It’s based on:
- The size of the job
- Whether the work is at height
- Any mould that needs treating
- The product the joint needs
We do not show prices on the website, because the cost depends so much on the job itself. Call for a quick quote.
What to tell us for a quote
What to tell us when you ask for a quote:
- Whether it’s a home or a business
- Photos by email, if that’s easy
- Where the property is
- What’s wrong with the joints now
For window mastic in Holybourne, call 0345 464 0079 or drop us an email. Tell us what the problem is and where, and we’ll agree the price before any work begins.
Frames and glazing around Holybourne
With historic houses such as Bentworth Hall (about 4.6 miles west) nearby, there’s older building stock in the area around Holybourne 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. Compared with the north and west, the South East gets less rain, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
If you let a flat or house near Alton station, sound mastic around windows and doors keeps out the draughts and damp that tenants notice first. For site and facilities teams at buildings such as Andrews' Endowed Church of England Primary School, its window and door frames need their mastic kept sound, just like a home’s.
Holybourne is about 2 miles north-east of Alton, in Hampshire. Holybourne gets the same service as everywhere we cover: old sealant removed completely, careful preparation and a 12-month guarantee. Our Hampshire coverage runs to 683 places, Holybourne among them. We also work in Reading, about 20 miles from Holybourne.
We work across GU34 for window mastic and the streets around it. If you need window mastic at a property on London Road, Carpenters Close and Inhams Road or a nearby road, we can help. Neighbouring places we cover for window mastic include Neatham (1 mile south-east), Alton (2 miles south-west), Upper Froyle (2 miles north-east), Wyck (2 miles south-east) and East Worldham (2 miles south). Larger places within reach include Basingstoke (10 miles north-west), Farnborough (12 miles north-east), Fleet (9 miles north-east), Aldershot (10 miles north-east), Petersfield (11 miles south) and Yateley (13 miles north).
Landmarks near Holybourne
We work in homes and buildings around White Hart pub, Eggar's School and Treloar School, among other places. The closest station to Holybourne is Alton station, about 1.2 miles south-west of the centre. Well-known places in the area include Alton Community Hospital (2.4 miles south-west) and Allen Gallery (1.5 miles south-west). For a walk, there’s Holybourne Hill.
What the job involves on each surface
Aluminium frames
Bi-fold and sliding aluminium doors have long frame joints, and the bottom joint sees the most water. Each is cleaned, backed where deep and resealed.
Composite doors
A composite door usually sits in a plastic outer frame, and the joint around it is sealed like a window. We match the colour to the frame.
Do you need window mastic in Holybourne?
A lot of older mastic was never designed to stay flexible. Once it’s rigid, every bit of frame movement pulls at it, leaving a hairline gap down one side.
The problems people normally mention when they call are:
- Old mastic that has gone black or come away
- Gaps left after new windows were fitted
- Leaking joints at the ends of sills
- Sealant in the wrong colour for the frame
For an older house near a landmark such as Holy Rood Church, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
What to look for in a quote
- Whether they seal over old material or remove it
- Is VAT in the price?
- Whether you can choose the colour
- The length of the guarantee