Hampshire · England
Sand Mastic in Holybourne
Sand mastic across Holybourne and nearby, with old sealant always removed completely.
- Gaps round a timber door in stone or brick
- Window mastic to renew ahead of painting
- A silicone bead on a sash window that spoils the look
About our sand mastic in Holybourne
We renew sand mastic around sash windows and doors set in stone or brick. Out comes the old, loose mastic, the joint is prepared and new mastic is shaped by hand. We work on tenement windows, sash and case windows and brick reveals, and common reasons people get in touch are gaps round a timber door in stone or brick and a silicone bead on a sash window that spoils the look.
Outdoor sealant needs dry, clean surfaces, so work on frames around Holybourne is planned for dry weather. Let us know about access to all the frames, upstairs ones included.
All of our work is guaranteed for twelve months, and the guarantee is the same wherever you are.
- Where
- Holybourne (GU34)
- Region
- Hampshire
- Cover
- One year on every job
- Price
- Quoted before any work starts
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
How the job changes by surface
Sash and case windows
On a sash window, the mastic joint shows on the outside, so a neat, even finish matters.
Stone surrounds
We take care not to mark the stone when the old mastic comes out.
Places near Holybourne
What else we do in Holybourne
What sealant work can’t fix
We’d rather tell you now than do work that won’t last, so these are the limits:
- Damaged stone surrounds
- Rotten sashes, sills or window boxes (a joiner’s job)
- Putty and glazing repairs
If you are not sure, just ring 0345 464 0079 or email us and we’ll give you a straight answer.
Joints and surfaces we work on
- Stone surrounds
- Sash and case windows
- Period & listed homes
- Tenement windows
- Brick reveals
- Timber door frames
What sand mastic looks like in 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 timber frames in brick or stone need a different approach from a modern uPVC window. Rainfall in the South East is lower than in much of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
Letting a property close to Alton station? Then cracked sand mastic around sash windows lets in the draughts tenants complain about. If you look after a building such as Andrews' Endowed Church of England Primary School, its window and door frames need their mastic kept sound, just like a home’s. 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.
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. Holybourne is one of 683 places in Hampshire where we work. We also work in Reading, about 20 miles from Holybourne.
Work in GU34 is quoted and booked the same way as anywhere else. Local streets include London Road, Carpenters Close and Inhams Road, all of which we cover. Other places close to Holybourne 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). Further out, we also cover 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).
What’s near Holybourne
Locally, jobs take us to homes and businesses close to White Hart pub, Eggar's School and Treloar School. The nearest railway station is Alton station, roughly 1.2 miles south-west of the centre. Nearby you will also find Alton Community Hospital (2.4 miles south-west) and Allen Gallery (1.5 miles south-west). Green spaces nearby include Holybourne Hill.
Can I do it myself?
If you’re set on DIY, put the effort into preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it fails, we can still redo it.
Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs need the right product, the right access and the right method.
Common questions in Holybourne
Will you come out to Holybourne?
Yes. Holybourne 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.
Do you cover Holybourne for sand mastic?
Yes. We work across London and the South East, and Holybourne is part of that. You can phone 0345 464 0079 or send us an email and let us know what needs doing, and we will give you a clear price.
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.
Do you have insurance?
Yes. We’re fully insured.
How long does sand mastic take to harden?
It forms a skin fairly soon and it hardens fully over a longer time. The weather and joint depth both affect it.
Will there be a smell?
That depends on the sealant. Some products have a noticeable smell, others very little.
What exactly is sand mastic?
It’s sand mixed with a linseed-oil-based binder, used between timber frames and stone or brick.
What does sand mastic cost?
Size, access and the old material all affect the cost. Ask us for a quote and we will talk you through it.
For landlords and businesses
Water getting past a failed joint can damage the building, which matters even more when someone else lives there. Keeping joints in good order is simple maintenance.
For anyone letting property in or around Holybourne, jobs at different addresses can be quoted together. Send us the addresses and the work at each.
What happens on the day
There isn’t much for you to do on the day. Point us to the joints and we will get on with it. The job generally takes a few hours for a single window, longer for several. Somewhere as small as Holybourne, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We start by checking each surround and agreeing the joints to renew.
- Old, loose mastic is raked out and the joint cleaned.
- We pack any deep gaps so the mastic sits at the right depth.
- The mastic is mixed, pressed into the joint by hand and shaped.
- The mastic is finished to sit tidily against the stone or brick.
Preparing for the visit
- Let us know if you’ve seen damp or leaks
- Mention any tricky access
- Let us know about earlier repairs to the joints
Ask for a quote
The more we know about the job, the more useful the quote. Tell us where the job is, what’s wrong and how much there is.
Advice
Leave it or put it right?
An open joint round the frame lets weather in. Water can get to the frame and the masonry so renewing it early protects the window. Around Holybourne, older homes often have timber in their floors and frames, and water through a failed joint can rot timber if it’s left.
A failed joint rarely gets cheaper to fix by waiting. If you are not sure whether it needs doing, phone 0345 464 0079 or send us an email for an honest opinion and a quote.
Why choose Mr Mastic in Holybourne
- 12-month guarantee on every job
- Over 20 years’ experience
- Neat joints and a tidy finish
- 4.9 on Google from 180+ five-star reviews
Read what affects the cost or our reviews.
What affects the cost of sand mastic
The price is agreed before any work begins. It’s based on:
- When we can work, for business premises
- The product the joint needs
- How much there is to do
- Mould in or behind the old joints
Homes and businesses are quoted the same way: how much there is to do, how we reach it and what it needs. Ask us for a quote and we’ll go through it with you.
What to tell us for a quote
The more you tell us, the more accurate the quote. When you ask for a quote, tell us:
- How we’d reach the joints
- What’s wrong with the joints now
- Where the job is, and your postcode
- The type of property
Need a quote? Please ring 0345 464 0079 or send us an email with a few details. We’ll explain what we’d do and send you a clear quote before any work starts.