Hampshire · England
Sand Mastic in Priddy's Hard
We cover Priddy's Hard for traditional burnt sand mastic around sash and case windows and doors in stone and brick. Old sealant removed completely, joints prepared properly.
- Wind and rain getting in round a sash window
- Mastic that needs renewing before redecorating
- Crumbling sand mastic round a window
How we handle sand mastic in Priddy's Hard
On many period windows, sand mastic looks right and suits the building. Newer frames normally get a flexible sealant instead, and we will talk through which suits your home. If you’re dealing with silicone on a period window that looks wrong and mastic round period door frames that has failed, we can help.
Outdoor sealant needs dry, clean surfaces, so work on frames around Priddy's Hard is planned for dry weather. Tell us about access to every side of the house, including upper-floor windows.
We stand behind the work with a one-year guarantee.
- Place
- Priddy's Hard (PO12)
- Wider area
- Hampshire
- Cover
- A year, on every job
- Price
- A clear price before any work starts
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
What affects the cost of sand mastic
We quote each job individually. This is what makes a difference:
- Mould in or behind the old joints
- The old material and how stubborn it is
- How easy the joints are to reach
- The number and length of the joints
Doing several joints on one visit generally makes better use of the time than several visits. You’ll get one clear quote for the whole job.
Helping us quote
When you call or email, it’s useful to know:
- What’s wrong with the joints now
- The type of property
- How many joints, rooms or windows are involved
- How we’d reach the joints
A good description makes for an accurate quote. Let us know the location, the problem and roughly how many joints.
How to look after the new joints
To keep the joints looking good and working properly:
- Have rotten timber repaired before new mastic goes in
- Avoid heavy scraping on the mastic joint
- Inspect the joints round the windows every year or so
- Renew mastic before redecorating the windows
Do not run silicone over the new mastic. If anything cracks, get it looked at before trying a quick fix.
Crumbling mastic lets rain into the joint. It can soak into the frame and the surrounding masonry, so renewing it early is worth it.
Why it’s worth doing now in Priddy's Hard
An open joint round the frame lets weather in. Water can get to the frame and the masonry, so dealing with it now protects both. In a small place like Priddy's Hard, homes can be exposed to wind and rain, which finds any gap, and damp in older walls is slow to dry out.
Rather than a set price list, we look at what your job involves: the amount of work, the old material and the access. You’ll know the price before we begin.
Why book with us
- Anti-fungal silicone where joints get wet
- We are fully insured
- We never seal over old sealant
- Tidy, careful work
Read our cost guide and our reviews.
Work for landlords, hotels and businesses
Letting agents and landlords in Priddy's Hard can book us as well as homeowners. Sealant work between tenants keeps a property looking cared for before the next move-in.
Housing providers, facilities teams and property managers book us too. We can quote a run of properties together, and we are fully insured.
When it isn’t the sealant
Before you book, it’s worth knowing the limits too:
- Decisions on consent for listed homes
- Sashes that rattle, stick or will not open
- Cracked or broken glass
If you’re not sure, just phone 0345 464 0079 or send us an email and we will give you a straight answer.
Surfaces we seal
- Sash and case windows
- Stone surrounds
- Brick reveals
- Timber door frames
- Period & listed homes
- Tenement windows
FAQs for Priddy's Hard
Will you come out to Priddy's Hard?
Yes, smaller places are covered as well as towns. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.
Can you help a landlord with a rental near Portsmouth Harbour station?
Yes, we work for landlords and letting agents. You can ring 0345 464 0079 or email us with the address and a few details, and we’ll give you a fixed price before we start.
Which is right for my windows, sand mastic or modern sealant?
For period timber windows in stone or brick, sand mastic is often the better fit. Modern frames normally suit a flexible sealant, and we will explain why.
How long does sand mastic take to go off?
The surface skins quite quickly, then hardens over a longer period. Timing depends on the weather and the joint.
Do I need permission for sand mastic on a listed building?
Speak to your local planning authority before work starts. Sand mastic is often favoured as like for like, but they decide.
Can sand mastic be painted?
Traditional guidance is not to paint over sand mastic. Ask us before you decorate around it and we will talk you through it.
Do I have to be there?
If the work is inside, we need someone to let us in. After that, you can carry on with your day.
Is there any odour?
There can be a smell while the sealant cures, which fades as it sets. Opening a window helps.
When to call us in Priddy's Hard
Some old mastic was never deep enough. Mastic that is too thin cracks and drops out, which is why we pack deep voids first and get the depth right.
If you can see any of these, it’s time to have the joints looked at:
- Mastic that needs renewing before redecorating
- Weathered mastic on the most exposed windows
- A silicone bead on a sash window that spoils the look
- Crumbling sand mastic round a window
For landlords with property near Portsmouth Harbour station, cracked sand mastic around sash windows lets in the draughts tenants complain about.
Before booking anyone
- How the colour is chosen
- When the joint can take water or movement
- The length of the guarantee
- Whether they seal over old material or remove it
Windows and doors in Priddy's Hard
Priddy's Hard is within about 1 mile of the coast, and homes near the sea take more wind-driven rain, with salt in the air closer to the shore. 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, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
For site and facilities teams at buildings such as St Vincent College, larger buildings have plenty of frames, and the mastic around each one ages. Homes close to Church of St Mary include some older properties, and replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
Priddy's Hard is about 1 mile east of Gosport, in Hampshire. We carry out sand mastic for homes and businesses in Priddy's Hard and the surrounding area. Our area takes in 683 places across Hampshire.
All of PO12 is within our area for sand mastic. Sand mastic is available to properties on Weevil Lane, Orion Avenue and Salt Meat Lane and the roads around them. Other places close to Priddy's Hard include Forton (1 mile south-west), Elson (1 mile north-west), Gosport (1 mile west), Bridgemary (2 miles north-west) and Rowner (2 miles north-west). Within a short drive, we also cover Havant (7 miles north-east), Eastleigh (15 miles north-west), Fareham (4 miles north-west), Horndean (9 miles north-east), Hedge End (11 miles north-west) and Waterlooville (7 miles north-east).
Local landmarks in Priddy's Hard
We work in homes and buildings around Brune Park Community School, The Windsor Castle pub and Elson Junior School. Priddy's Hard’s nearest station is Portsmouth Harbour station, roughly 1 mile south-east of the centre. A little further out are Tricorn Centre (1.6 miles east) and Search (0.8 miles south). For a walk, there’s West of the River Alver and Portsdown Hill.
Also near Priddy's Hard
Other services in Priddy's Hard
How the visit works
Before we leave, we go over the finished joints with you. The visit itself normally takes a few hours per window, depending on the condition of the joints, depending on the amount of work. Somewhere like Priddy's Hard needs a little journey planning: let us know about lanes, gates and parking. 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 any leaks or damp you’ve noticed
- Clear items away from the joints we’re working on
- Let us know about parking restrictions
How to get a quote
Need a quote? Please phone 0345 464 0079 or drop us an email with a few details. You will know what we plan to do, and what it will cost, before any work begins.