Hampshire · England
Sand mastic for sash & case windows in Walhampton, Hampshire
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for householders, landlords and businesses in Walhampton. Fully insured, ARBOMaster approved and guaranteed for a year.
- Cracked mastic round a front door frame
- Crumbling sand mastic round a window
- Silicone on a period window that looks wrong
Sand mastic in Walhampton
We renew sand mastic around sash windows and doors set in stone or brick. Out comes the old, loose mastic, and new mastic is applied and shaped by hand. Common call-outs are for mastic round period door frames that has failed and draughty sash windows at the surround, across sash and case windows, stone surrounds and period & listed homes.
In a village or hamlet like Walhampton, older cottages and farmhouses often have timber windows set in stone or brick. Not every older frame suits a modern silicone bead, so the sealant has to be chosen to suit the building.
You are covered for a year from the day we finish. If anything isn’t right with it, ring 0345 464 0079 or drop us an email.
- Location
- Walhampton (SO41)
- Wider area
- Hampshire
- Cover
- A year, on every job
- Price
- A clear quote up front
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Walhampton: your questions answered
Does the coastal weather in Walhampton affect outside sealant?
Near the coast, wind-driven rain and, nearer the shore, salt air make outside sealant work harder. Choosing the right sealant for the frame and wall, laid at the right depth, helps it last.
Do you work for landlords with property near Lymington Town station?
Yes, landlords and agents are among the people we work for, and several properties can go on one quote. You can ring 0345 464 0079 or drop us an email with the details for a clear quote.
Do you work in Walhampton?
Yes. We cover Walhampton, as part of our work across South East England, London and Scotland. For a quote, ring 0345 464 0079 or drop us an email.
Is it possible to take out silicone and use sand mastic instead?
In most cases. We remove the silicone and clean the joint before the sand mastic goes in.
How long does the job take?
Most jobs take anything from a few hours to a full day, depending on how many windows, including preparation and clearing up. We will confirm how long when we quote.
Can new sealant go over the old?
No, because it fails. The old sealant always comes out first, so the new sealant bonds properly.
Do you offer different sealant colours?
Most of the time, yes. We’ll explain which colours are available.
Is there any odour?
There can be a smell while the sealant cures, which fades as it sets. Ventilation helps.
For landlords and businesses
In hotels, rooms out of use cost money, so we plan the work room by room. Hotel work is part of what we do, alongside homes and businesses.
For anyone letting property in or around Walhampton, jobs at different addresses can go on one quote. Just tell us the addresses and what each one needs, and photos by email help.
More services for Walhampton
When something else is needed
To be straight with you, there are a few things sealant will not fix:
- Putty and glazing repairs
- Whether work needs listed building consent
- Decayed frames that need repair
Not sure which it is? You can phone 0345 464 0079 or send us an email and we’ll tell you honestly.
What we seal
- Sash and case windows
- Period & listed homes
- Tenement windows
- Timber door frames
- Brick reveals
- Stone surrounds
What we are called out for in Walhampton
Sand mastic slowly weathers. It hardens, cracks and starts to come away from the frame or the masonry.
The problems people generally mention when they call include:
- Cement or filler used on old window joints that has cracked
- Gaps round a timber door in stone or brick
- Failed mastic on an exposed elevation
- Mastic dropping out of the joint
For landlords with property near Lymington Town station, cracked sand mastic around sash windows lets in the draughts tenants complain about.
What to look for in a quote
- How much experience the applicator has
- How hidden problems are handled
- What preparation is included
- What the quote includes, VAT included or not
Frames and glazing around Walhampton
Walhampton is close to the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. Both are hard on the mastic around older windows and doors, which can dry out and crack sooner where a building faces the weather. The South East is one of the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
Schools such as Lymington Church of England Infant School are buildings too, and its window and door frames need their mastic kept sound, just like a home’s. Homes close to United Reform Church include some older properties, and replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
Walhampton is about 1 mile east of Lymington, in Hampshire. We provide sand mastic to homeowners, landlords and businesses in Walhampton and nearby, as part of our work across Hampshire. Walhampton is one of 683 towns and villages in Hampshire we cover. We also work in Southampton, around 12 miles away.
Every address in SO41 is within our area for sand mastic, from the main roads to the quietest streets. We cover properties on Undershore Road and Walhampton Hill. We also cover the places around Walhampton: Lymington (1 mile west), Portmore (1 mile north), Warborne (1 mile north), Pennington (1 mile south-west) and Pilley (2 miles north). We also work in nearby towns such as Totton (11 miles north), Hedge End (15 miles north-east), Hythe (9 miles north-east), New Milton (6 miles west), Ringwood (12 miles north-west) and Locks Heath (14 miles north-east).
What’s near Walhampton
In Walhampton, that means homes and buildings near The Ferryman pub, Priestlands School and Southlands School, among other places. Walhampton has its own railway station: Lymington Town station. Other landmarks nearby include Lymington New Forest Hospital (0.8 miles north-west) and Yarmouth Castle (4 miles south). The countryside around Walhampton includes Boldre Foreshore.
Why act early in Walhampton
Filling over old, loose mastic doesn’t last. We remove the loose material first so the new mastic stays put. Around Walhampton, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.
Commercial jobs are quoted on the same basis as homes: the amount of work, how we reach it and what it needs. Ask us for a quote and we will go through it with you.
Why us?
- 4.9 on Google from 180+ five-star reviews
- Neat joints and a tidy finish
- Over 20 years’ experience
- Quality sealants from Arbo and Everbuild
See our cost guide and our reviews.
Aftercare tips
To keep the joints looking good and working properly:
- Clear gutters so water doesn’t pour onto the windows
- Take care around the mastic when scraping paint
- Don’t paint over the new mastic
- Do not run silicone over sand mastic
Avoid painting over the new mastic, which is the traditional advice. Ask us before any decorating around it.
Renewing mastic before redecorating saves doing it twice. Painting over failed mastic hides the problem for a while.
DIY sealant or a professional job?
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 does not work out, we can still put it right.
The biggest DIY mistake is sealing over old sealant. Silicone does not stick to old silicone, so it peels away and traps moisture behind it. All the old material has to come out first.
How it works
Once we’re on site, we compare the joints with what we discussed. If anything is different, we explain it before carrying on. Most jobs then take a few hours per window, depending on the condition of the joints. In a small place like Walhampton, access is usually the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- First, we look at the surrounds with you and agree what needs doing.
- We rake out the old mastic and clean the joint.
- Large voids are packed out first, so the mastic isn’t too thick.
- We mix the sand mastic and apply it by hand, shaping it to the joint.
- We dress the surface so it sits neatly against the masonry.
Before we arrive
- On commercial sites, let us know about site rules
- Mention any tricky access
- Mention any leaks or damp you’ve noticed
How to get a quote
To get a quote, call 0345 464 0079 or send us an email with the location and a short description of the problem. You’ll have a clear quote before we start.