Hampshire · England
Penton Grafton Sand Mastic
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for homes and businesses in Penton Grafton and across Hampshire. Fully insured, ARBOMaster approved and guaranteed for a year.
- Cement or filler used on old window joints that has cracked
- Draughts and rain around sash boxes
- Modern sealant on a period surround
How we handle sand mastic in Penton Grafton
Silicone on a period window often looks wrong and doesn’t suit the building. Sand mastic is the traditional choice and we can swap the silicone for it. We work on period & listed homes, stone surrounds and brick reveals, and the jobs we see most are open joints round the window box and cracked mastic round a front door frame.
Somewhere as small as Penton Grafton, older homes often have timber frames set in stone or brickwork. Older buildings like these do not always suit modern silicone, and sometimes a traditional sand mastic is the better choice.
Every job is covered by a 12-month guarantee.
- Place
- Penton Grafton (SP11)
- Wider area
- Hampshire
- Guarantee
- 12 months on all our work
- Price
- Quoted before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
Landlords, agents and businesses in Penton Grafton
Mouldy or split sealant often shows up at the end of a tenancy, and it’s quick to put right between tenancies. We can quote for more than one property at once.
We also work for businesses, from offices to washrooms and kitchens. On commercial sites, working times can be discussed when we quote.
What sand mastic looks like in Penton Grafton
London and the South East are among the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
Managing a site like Harrow Way Community School? Then larger buildings have plenty of frames, and the mastic around each one ages. Homes close to Holy Trinity Church include some older properties, and frames set in older brick or stone need a sealant that suits the wall as well as the frame. Rented homes near Andover station change hands often, and cracked sand mastic around sash windows lets in the draughts tenants complain about.
Penton Grafton is about 2 miles north-west of Andover, in Hampshire. Anywhere in SP11, we cover sand mastic for homes and businesses. Across Hampshire, we cover 683 places, Penton Grafton among them. You can also see our page for Southampton, about 22 miles away.
Here we cover the SP11 postcode area for sand mastic. We also cover the places around Penton Grafton: Penton Mewsey (1 mile north-east), Penton Corner (1 mile south), Foxcotte (1 mile east), Charlton (1 mile east) and Weyhill (1 mile south-west). Within a short drive, we also cover Winchester (15 miles south-east), Hyde (14 miles south-east), Tidworth (6 miles west), Weeke (14 miles south-east), Stanmore (15 miles south-east) and Ludgershall (4 miles north-west).
Near you in Penton Grafton
Locally, jobs take us to homes and businesses close to White Hart Public House, among other places. Penton Grafton’s nearest station is Andover station, about 1.9 miles south-east of the centre. Nearby you will also find Andover Museum (2.6 miles south-east) and Ludgershall Castle (4.6 miles north-west). Green spaces nearby include Anton Lakes and Mill Lake.
DIY versus a professional finish
The biggest DIY mistake is sealing over old sealant. Silicone does not stick to old silicone, so it lifts and traps water and mould underneath. Everything old must be removed first.
Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
Why it’s worth doing now in Penton Grafton
Silicone might seem the quicker option, but it can look wrong on a period surround. Sand mastic suits the building and blends with the stone or brick. Around Penton Grafton, older homes often have timber in their floors and frames, and water through a failed joint can rot timber if it’s left.
There are no prices on our website, because each job is priced on what it involves. Call for a quick quote and we will talk you through it.
Why book with us
- Anti-fungal sanitary silicone in wet areas
- Quality sealants from Arbo and Everbuild
- Over 20 years’ experience
- A 12-month guarantee on all work
See our cost guide or our reviews.
Different surfaces, different methods
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.
Tenement and terrace windows
In shared buildings, the windows may be part of a wider repair, so check who is responsible first.
Places near Penton Grafton
Other services in Penton Grafton
How the visit works
When we get to you, we check the joints match what you told us. If anything is different, we explain it before carrying on. Most jobs then take anything from a few hours to a full day, depending on how many windows. For a village or hamlet like Penton Grafton, the journey is planned in advance: tell us about narrow lanes, gates, long drives and where we can park. We bring what the job needs, so it can be finished in one trip where possible.
- We check each window surround and the condition of the joint.
- The joint is raked out and cleaned.
- We fill deep gaps so the new mastic isn’t too thick.
- New sand mastic is applied and shaped by hand.
- We finish the mastic to a tidy line.
Preparing for the visit
- Let us know about parking restrictions
- Plan for the work area to be out of bounds to pets and children
- Clear the area around the work
Ask for a quote
We don’t publish a price list. Instead, your job gets its own clear quote. To get started, phone 0345 464 0079 or email us.
Read more
When it isn’t the sealant
Sealant isn’t the answer to every problem, and we’d rather say so up front. It will not solve:
- Masonry that needs repairing
- Sashes that rattle, stick or won’t open
- Putty and glazing repairs
If in doubt, phone 0345 464 0079 or drop us an email and we’ll say what we think.
Surfaces we seal
- Stone surrounds
- Sash and case windows
- Timber door frames
- Brick reveals
- Period & listed homes
- Tenement windows
Penton Grafton questions
Can you do sand mastic in Penton Grafton?
Yes. We work across London and the South East, and Penton Grafton is part of that. Just ring 0345 464 0079 or send us an email with a few details of the job.
Can you help a landlord with a rental near Andover station?
Yes, rental work is part of what we do. Just call 0345 464 0079 or send us an email and tell us about the property, and we’ll send you a clear quote.
Is sand mastic better than silicone for my windows?
For period timber windows in stone or brick, sand mastic is often the better fit. Modern frames normally suit a flexible sealant.
Is it possible to paint over sand mastic?
It’s traditionally left unpainted, which is what traditional guidance recommends. Talk to us before any painting near it.
What guarantee comes with the work?
There’s a 12-month guarantee on every job, sand mastic included.
Do you have insurance?
Yes, we’re fully insured for every job we do.
What information do you need?
The location, the problem and the rough size of the job. Photos by email help too.
How long does the job take?
As a guide, most jobs take anything from a few hours to a full day, depending on how many windows. Larger jobs naturally take longer.
What affects the quote in Penton Grafton
There’s no set price list. The quote depends on:
- Access and height
- The amount of work
- The number of rooms or windows
- Mould in or behind the old joints
Combining jobs into one visit is usually more efficient than separate visits, so tell us about everything that needs sealing. You’ll get one clear quote for the whole job.
Asking for a quote
Photos help, but a description is a good start. Try to tell us:
- If someone has resealed it before
- The type of property
- Any access issues, like height or stairs
- Roughly how big the job is
For sand mastic in Penton Grafton, ring 0345 464 0079 or email us. Tell us what the problem is and where, and you will get a clear quote before any work starts.