Hampshire · England
Sand mastic for sash & case windows in Little Posbrook, Hampshire
Traditional burnt sand mastic around sash and case windows and doors in stone and brick in Little Posbrook, with a one-year guarantee on every job. Ask us for a quote.
- Mastic that needs renewing before redecorating
- Modern sealant on a period surround
- Gaps between timber frames and stone or brick
The process
On the day, we look over the joints with you first, so there are no surprises. We protect the surfaces around the joints before any work begins. The work usually takes a few hours for a single window, longer for several. Somewhere as small as Little Posbrook, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We check the window surrounds and agree which joints need renewing.
- The loose and crumbling mastic is raked out and the joint cleaned.
- Deep voids are packed so the mastic is the right thickness.
- Sand mastic is mixed and applied by hand, then shaped to the joint.
- We dress the surface so it sits neatly against the masonry.
How to prepare
- Tell us if parking is tricky
- Where the joints are inside, avoid wetting them before we arrive
- Clear items away from the joints we’re working on
Get a quote
There’s no standard price list, because every job is different. Instead, your job gets its own clear quote. To arrange one, call 0345 464 0079 or send us an email.
Related advice
Sand mastic in Little Posbrook
On many period windows, sand mastic looks right and suits the building. On modern frames we’d normally use a flexible sealant, and we’ll talk through which suits your home. Common call-outs are for draughty sash windows at the surround and gaps round a timber door in stone or brick, across sash and case windows, timber door frames and brick reveals.
Around Little Posbrook, many homes face open ground, so their windows and doors take the full weather. Exposed frames and sills lose their mastic sooner than sheltered ones.
All of our work is guaranteed for twelve months.
- Place
- Little Posbrook (PO14)
- Region
- Hampshire
- Cover
- One year on every job
- Quotes
- A clear price before work begins
- Call
- 0345 464 0079
- Updated
- 26 October 2026
Windows and doors in Little Posbrook
Little Posbrook is within about 1 mile of 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. Compared with the north and west, the South East gets less rain, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
Schools such as Stubbington House School are buildings too, and the mastic around its windows and doors needs looking after like any other building’s. In the older streets around Church of St Peter, frames set in older brick or stone need a sealant that suits the wall as well as the frame.
Little Posbrook is about 2 miles south-west of Fareham, in Hampshire. For sand mastic in and around Little Posbrook, please phone 0345 464 0079 or drop us an email for a quick quote. We’re based in Crawley and cover Hampshire. Our area takes in 683 places across Hampshire. You can also see our page for Portsmouth, about 8 miles away.
Work in PO14 is quoted and booked the same way as anywhere else. If you are just outside Little Posbrook, we cover Titchfield (1 mile north), Abshot (1 mile north-west), Hill Head (1 mile south-east), Stubbington (1 mile south-east) and Titchfield Common (2 miles north-west). We also work in nearby towns such as Gosport (5 miles south-east), Havant (11 miles east), Eastleigh (10 miles north-west), Horndean (11 miles north-east), Totton (13 miles north-west) and Chandler's Ford (12 miles north-west).
Landmarks near Little Posbrook
Typical jobs here are in homes near Coach & Horses pub and Crofton School. Little Posbrook’s nearest station is Fareham station, about 2.6 miles north-east. A little further out are Fareham Community Hospital (2.8 miles north-west) and Fareham Shopping Centre (3.2 miles north-east). Open spaces near Little Posbrook include Holly Hill Woodland Park.
Honest limits
Honest advice matters more to us than a booking, so here’s what new sealant will not do:
- Sash cords, weights and draught-proofing of the sashes
- Masonry that needs repairing
- Decisions on consent for listed homes
If you’re not sure, just ring 0345 464 0079 or send us an email and we’ll give you a straight answer.
Where we work in Little Posbrook
- Stone surrounds
- Tenement windows
- Period & listed homes
- Brick reveals
- Timber door frames
- Sash and case windows
When to call us in Little Posbrook
Scraping and sanding before painting can loosen old mastic. It’s often found when windows are being prepared for paint, which is a good time to renew it.
The most common problems we see are:
- Cement or filler used on old window joints that has cracked
- Gaps between timber frames and stone or brick
- Tired mastic found when preparing windows for paint
- Draughty sash windows at the surround
Letting a property close to Fareham station? Then cracked sand mastic around sash windows lets in the draughts tenants complain about.
Before booking anyone
- When the joint can take water or movement
- What product goes in the joint
- What the quote includes, VAT included or not
- Whether all the old sealant comes out first
Little Posbrook questions
Does the coastal weather in Little Posbrook affect outside sealant?
Coastal weather is harder on outside sealant: there’s more wind-driven rain and, closer to the shore, salt in the air. The right product, a clean joint and the right depth all help it cope.
Can you help a landlord with a rental near Fareham station?
Yes, landlords and agents are among the people we work for, and several properties can be quoted together. You can ring 0345 464 0079 or send us an email with the details for a clear quote.
Is there any odour?
Sometimes, a little. Any smell clears as the sealant cures, and ventilation helps.
Do you cover Little Posbrook?
Yes. We are based in Crawley and work across South East England, London and Scotland, Little Posbrook included.
What sealant do you use?
Quality sealants from brands including Arbo and Everbuild, picked for each joint. We’ll tell you what we are using and why.
Where is Mr Mastic based?
Our base is Crawley. We work across South East England, London and Scotland.
Can you replace silicone on a period window with sand mastic?
In most cases. We remove the silicone and clean the joint, then point it with sand mastic.
What is sand mastic?
It’s a mix of sand and a linseed-oil-based binder. It’s applied by hand and finished to sit neatly against the masonry.
Nearby places to Little Posbrook
Other services in Little Posbrook
Why act early in Little Posbrook
Gaps round a sash window let in rain and draughts. Left, water can reach the timber and the wall, so dealing with it now protects both. Older cottages and farmhouses around Little Posbrook can have timber floors and frames, where water from a failed joint can cause rot if it’s left.
Combining jobs into one visit normally makes better use of the time than several visits. You will get one clear quote for the whole job.
What you get with us
- Sanitary silicone with an anti-fungal additive in wet areas
- Fully insured
- 12-month guarantee on every job
- An ARBOMaster approved applicator
Take a look at our cost guide and what customers say.
Keeping the joints in good condition
Good habits help new joints last longer. A few tips:
- Check the mastic when you check the paintwork
- Ask the planning authority about consent for listed or conservation-area homes
- Plan mastic work ahead of painting
- Make sure water runs off the sill
Make sure water drains away from the window surround. Water sitting against the mastic shortens its life.
An open joint round the box lets weather through. Left, the gap tends to get bigger.
Different surfaces, different methods
Tenement and terrace windows
Rows of sash windows on tenements and terraces often need renewing together. We can do one window or several.
Period and listed homes
Materials matter on listed and conservation-area homes. Like-for-like sand mastic is normally favoured.
For landlords and businesses
We regularly work with letting and managing agents. Send the address, what’s needed and the access arrangements and we’ll quote.
If you manage several properties in or around Little Posbrook, several properties can go on one quote. Send us the addresses and the work at each, and photos by email help.