Hampshire · England
Sand Mastic in Stanswood
Sand mastic across Stanswood and nearby, with old sealant always removed completely and a 12-month guarantee.
- Mastic that needs renewing before redecorating
- Mastic worn away on windows facing the weather
- Cement or filler used on old window joints that has cracked
About our sand mastic in Stanswood
Sand mastic does not last for ever and gaps open up round the frame. Renewing it closes the gap so the surround looks right again. If you have gaps between timber frames and stone or brick and draughty sash windows at the surround, we can put it right, whatever the surface.
Outdoor sealant needs dry, clean surfaces, so work on frames around Stanswood is planned for dry weather. Let us know about access to all the frames, upstairs ones included.
We stand behind the work with a 12-month guarantee, so you are not left on your own once the job is done.
- Location
- Stanswood (SO45)
- Wider area
- Hampshire
- Cover
- A year, on every job
- Quotes
- A clear quote up front
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
The process
Every visit runs the same way: we look at the joints together, mask and protect the surrounding surfaces, carry out the job and tidy away. Most jobs take a few hours per window, depending on the condition of the joints. In a small place like Stanswood, access is usually the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- First we agree which joints need doing.
- Old mastic and any loose material are raked out.
- Deep gaps are packed so the mastic sits at the right depth.
- The sand mastic is mixed and pressed into the joint by hand.
- We dress the finish so it sits neatly against the masonry.
How to prepare
- Mention any leaks or damp you’ve noticed
- Tell us about any previous sealing or DIY attempts
- Mention any sign-in or site rules at work premises
How to get a quote
For a quick quote, get us on the phone, or send an email if you’d rather. Describe what needs sealing and we’ll talk you through the work.
Advice
Nearby places to Stanswood
More services for Stanswood
What affects the cost of sand mastic
Call for a quick quote. The main things that affect it are:
- How easy the joints are to reach
- Which sealant suits the joint
- How many areas need sealing
- Whether old sealant or filler has to be cut out
Some things make a job bigger or smaller: the old material and how easily it comes out, whether mould needs treating, and whether the work is at height. We take all of that into account in your quote.
Asking for a quote
A few details help us give you an accurate quote. When you get in contact, it helps to mention:
- The address or postcode of the job
- How we’d reach the joints
- Any previous sealing or DIY work
- A few pictures by email, if you can
We do not publish a price list, because every job is different. Instead, your job gets its own clear quote. To get started, ring 0345 464 0079 or email us.
FAQs for Stanswood
Is sand mastic in a coastal place like Stanswood any different?
Coastal weather is harder on outside sealant: there’s more wind-driven rain and, closer to the shore, salt in the air. Choosing the right sealant for the frame and wall, laid at the right depth, helps it last.
Do you cover smaller places like Stanswood?
Yes, we do. We work across London and the South East, and smaller places are part of that. The journey is planned ahead, so it helps to know about access.
How do I get a quote for sand mastic in Stanswood?
We do not publish prices, because the cost depends on the job: how much there is, what’s there now, how we reach it and what it needs. You will get a clear quote before any work starts.
Can I paint the new mastic?
The usual advice is to leave sand mastic unpainted. If you’re redecorating the window, ask us first and we will advise.
Where do you work from?
Mr Mastic is based in Crawley. We cover Stanswood and the rest of Hampshire.
Can landlords and businesses book you?
Yes. We work in homes, commercial premises and hotels, and we are fully insured.
Do you take out the old sealant first?
Yes. Sealing over the old bead is the commonest cause of early failure, so we never do it.
What is sand mastic?
It’s sand mixed with a linseed-oil-based binder, used between timber frames and stone or brick.
Why act early in Stanswood
New sash windows are a major, costly change and on a listed home, consent may be needed. If the frames are sound, renewing the mastic deals with gaps and draughts at the surround. Older cottages and farmhouses around Stanswood can have timber floors and frames, where water from a failed joint can cause rot if it’s left.
The cost reflects the work involved, not guesswork. That is why we ask a few questions first.
What you get with us
- Tidy, careful work
- We never seal over old sealant
- Rated 4.9 stars on Google
- Over 20 years’ experience
What sand mastic looks like in Stanswood
Stanswood is close to the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. That’s hard on the mastic around older windows and doors, especially on the side facing the sea. 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.
Homes close to St George include some older properties, and replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
Stanswood is about 3 miles north-west of Cowes, in Hampshire. We carry out sand mastic for homeowners, landlords and businesses in Stanswood, as part of our work across Hampshire. We cover 683 towns and villages across Hampshire, from the larger towns to small villages. For nearby work, see our Southampton page (8 miles or so).
Every address in SO45 is within our area for sand mastic. We also cover the places around Stanswood: Sprat's Down (1 mile north), Calshot (1 mile north-east), Hillhead (1 mile north-east), Langley (1 mile west) and Blackfield (2 miles north-west). Larger places within reach include Gosport (8 miles east), Eastleigh (11 miles north), Fareham (7 miles north-east), Totton (11 miles north-west), Chandler's Ford (13 miles north) and Hedge End (8 miles north).
Landmarks near Stanswood
The closest station to Stanswood is Hamble station, roughly 4.8 miles north of the centre. Nearby you’ll also find Coldeast (5.4 miles north-east) and Calshot Castle (2 miles north-east). For a walk, there’s Mill Hill and Mercury Marshes.
Looking after it afterwards
After the cure time, these simple habits help:
- Do not run silicone over sand mastic
- Get any rot dealt with first
- Clear gutters so water does not pour onto the windows
- Sort the mastic before the decorators arrive
Do not touch or press the mastic while it hardens. It forms a skin fairly soon but needs longer to fully harden.
Sound mastic protects the frame. Failed mastic lets water reach the timber, which can lead to rot.
How the job changes by surface
Period and listed homes
Sand mastic is the like-for-like choice for many period homes. On listed buildings, check with your planning authority first.
Sash and case windows
The box of a sash and case window sits in the stone or brick opening. Sand mastic seals the joint round it.
Common problems we fix in Stanswood
Previous repairs in cement or silicone often trap water or crack away. They do not suit the joint, and they normally need raking out.
Signs it’s time to call us include:
- Mastic that needs renewing before redecorating
- Silicone on a period window that looks wrong
- Gaps where the frame meets the masonry
- Wind and rain getting in round a sash window
For landlords with property near Hamble station, older sash windows in a rental need their mastic kept sound to keep the weather out.
What your quote should include
- What the quote includes, VAT included or not
- How the joint is cleaned and prepared
- What product goes in the joint
- The length of the guarantee
When something else is needed
We’ll always be straight with you, so here’s what new sealant will not do:
- Damaged stone surrounds
- Timber that has rotted
- Cracked or broken glass
If you are not sure, just call 0345 464 0079 or drop us an email and we will give you a straight answer.
What we seal
- Sash and case windows
- Period & listed homes
- Brick reveals
- Timber door frames
- Tenement windows
- Stone surrounds