Hampshire · England
Shirrell Heath Sand Mastic
Window and door surrounds in Shirrell Heath need attention? We cut out the old, prepare the joints and apply the right sealant, and the work is guaranteed for a year.
- Failed mastic on an exposed elevation
- Tired mastic found when preparing windows for paint
- Patchy fillers round a sash window
When to call us in Shirrell Heath
Timber frames move with the seasons. The movement cracks the mastic little by little.
Common reasons people contact us include:
- Weathered mastic on the most exposed windows
- Old sand mastic that has cracked, crumbled or fallen out
- Cracked mastic round a front door frame
- Silicone on a period window that looks wrong
Letting a property close to Botley station? Then older sash windows in a rental need their mastic kept sound to keep the weather out.
Before booking anyone
- Whether all the old sealant comes out first
- How hidden problems are handled
- Whether the sealant suits the joint
- What guarantee comes with the work
About our sand mastic in Shirrell Heath
Sand mastic has long been used to fill the joint between timber frames and masonry. It’s made from sand and a linseed-oil-based binder, applied by hand. On older homes, it suits the building far better than silicone. If you have patchy fillers round a sash window and open joints round the window box, we can put it right.
Around Shirrell Heath, 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.
We stand behind the work with a one-year guarantee, so you’re not left on your own once the job is done.
- Location
- Shirrell Heath (SO32)
- Wider area
- Hampshire
- Cover
- A year, on every job
- Quote
- Quoted before any work starts
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Leave it or put it right?
A silicone bead can be quicker, but on period stone or brick it often looks out of place. Sand mastic suits the building and blends with the stone or brick. Around Shirrell Heath, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.
What it costs depends on how much there is to do, how much old material has to come out and access to the work. We give a clear quote before we start, so you know where you stand.
Why book with us
- Experience in homes, commercial sites and hotels
- Fully insured
- Trusted Arbo and Everbuild sealants
- Sanitary silicone with an anti-fungal additive in wet areas
Take a look at how sealant jobs are priced or what customers say.
What sand mastic looks like in Shirrell Heath
The South East is one of the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
For an older house near a landmark such as Church of St John, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall. Managing a site like St John the Baptist Church of England Primary School? Then the mastic around its windows and doors needs looking after like any other building’s.
Shirrell Heath is about 5 miles north of Fareham, in Hampshire. Across the SO32 area, we cover sand mastic for homes and businesses. 683 places in Hampshire are on our list, large and small. You can also see our page for Southampton, about 9 miles away.
Jobs for sand mastic in SO32 works the same way as everywhere else we cover. You will find streets such as High Street, Smiths Lane and Black Horse Lane, all of which we cover. Close by, we work in Shedfield (1 mile south-west), Kingsmead (1 mile east), Mislingford (1 mile east), Swanmore (1 mile north) and Wickham (2 miles south). Larger places within reach include Winchester (11 miles north-west), Gosport (8 miles south), Havant (10 miles south-east), Eastleigh (7 miles north-west), Fareham (5 miles south) and Horndean (8 miles east).
What’s near Shirrell Heath
Typical jobs here are in homes near Prince of Wales pub and Swanmore College of Technology. The nearest railway station is Botley station, roughly 2.9 miles west. Nearby you will also find Knowle Hospital (2.9 miles south) and Bishop's Waltham Museum (2.4 miles north-west). Green spaces nearby include Bishops Waltham Branch LNR.
Landlord and commercial work in Shirrell Heath
For anyone letting property in or around Shirrell Heath, jobs at different addresses can go on one quote. Send us the addresses and the work at each, and photos by email help.
Failed sealant is one of the commonest items on a check-out report, and it’s easy to sort out between tenants. We can quote for more than one property at once.
Nearby places to Shirrell Heath
Also in Shirrell Heath
Different surfaces, different methods
Brick reveals
An open joint at a brick reveal lets weather in. New mastic seals the gap.
Period and listed homes
A traditional finish suits a period property.
DIY versus a professional finish
The difference is mostly in the preparation and the product. Joints are cleaned back to sound surfaces and dried, and the sealant is chosen for how the joint moves and where it is, and the work is guaranteed for a year.
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs need the right product, the right access and the right method.
The process
There’s no need to move everything out, just the space around the work. We protect the rest, and the job takes a few hours for a single window, longer for several in most cases. Somewhere like Shirrell Heath 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.
- Each surround is checked first.
- We rake out the old mastic and clean the joint.
- Large voids are packed out.
- We point the joint with sand mastic by hand.
- The finish is dressed neatly.
How to prepare
- Mention if the joints have been sealed before
- Let us know if you’ve seen damp or leaks
- Tell us if parking is tricky
Ask for a quote
For a quote, ring 0345 464 0079 or email us with the location and a short description of the problem. You will have a clear quote before work begins.
Related advice
Aftercare tips
Once the sealant has cured, a few habits help it last:
- Look over the window mastic once a year
- Take care around the mastic when scraping paint
- Don’t paint over the new mastic
- Sort the mastic before the decorators arrive
Keep gutters and sills clear so water runs away from the surround. Constant wetting wears the mastic faster.
An open joint round the box lets weather through. The longer it’s left, the more the joint opens as more mastic falls out.
Common questions in Shirrell Heath
I let a flat near Botley station. Can you help?
Yes, landlords and agents are among the people we work for, and several properties can be quoted together. Just call 0345 464 0079 or email us with the address and what needs doing, and we’ll send you a clear quote.
Do you cover Shirrell Heath for sand mastic?
Yes. We work across London and the South East, and Shirrell Heath is part of that. You can phone 0345 464 0079 or send us an email and tell us what needs doing.
Are you fully insured?
Yes. Mr Mastic is fully insured, with over 20 years’ experience in sealant work.
Where is Mr Mastic based?
We are based in Crawley, West Sussex, and we work across South East England, London and Scotland.
Will the old sealant be removed?
Yes. Sealing over old sealant is the main reason resealing fails early, so we never do it.
How much does sand mastic cost in Shirrell Heath?
Size, access and the old material all affect the cost. Call for a quick quote and we’ll talk you through it.
Can I choose the sealant colour?
In most cases you can choose. We’ll explain which colours are available and agree one before we start.
Do I need permission for sand mastic on a listed building?
Checking first is sensible. Your local planning authority can say if consent is needed for work on a listed home or in a conservation area.