Hampshire · England
Long Sutton Sand Mastic
Professional sand mastic in and around Long Sutton, with every bit of old sealant taken out first.
- Silicone on a period window that looks wrong
- Window mastic to renew ahead of painting
- Open joints round the window box
Signs you need sand mastic in Long Sutton
Scraping and sanding before painting can loosen old mastic. Many people find it crumbling when they prepare the windows, which is a good time to renew it.
People usually contact us when they notice one of these:
- Weathered mastic on the most exposed windows
- Modern sealant on a period surround
- Open joints round the window box
- Cracked mastic round a front door frame
Letting a property close to Bentley (Hampshire) station? Then any sash windows need sound mastic to keep draughts and rain out.
What your quote should include
- Whether they’re fully insured
- What the cure time is
- Whether the sealant suits the joint
- How long the guarantee is
Sand mastic for homes and businesses in Long Sutton
Silicone on a period window often looks wrong and does not suit the building. Sand mastic is the traditional choice and we can swap the silicone for it. We work on tenement windows, stone surrounds and sash and case windows, and common reasons people get in touch are mastic that needs renewing before redecorating and mastic worn away on windows facing the weather.
Outdoor sealant needs dry, clean surfaces, so work on frames around Long Sutton is planned for dry weather. Tell us about access to every side of the house, including upper-floor windows.
You get a one-year guarantee, the same in Long Sutton as everywhere else we work.
- Where
- Long Sutton (RG29)
- Region
- Hampshire
- Guarantee
- One year on every job
- Price
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
How the visit works
On the day, we look over the joints with you first, so you know exactly what we are doing. Surfaces next to the work are protected before any work begins. Most jobs take anything from a few hours to a full day, depending on how many windows. In a small place like Long Sutton, access is generally the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- Each surround is checked first.
- We rake out the old mastic and clean the joint.
- Large voids are packed out.
- New sand mastic is applied and shaped by hand.
- We finish the mastic to a tidy line.
How to prepare
- Mention if the joints have been sealed before
- Where the joints are inside, avoid wetting them before we arrive
- Mention any parking rules near the property
Get a quote
Need a quote? Please ring 0345 464 0079 or email us and tell us about the job. We’ll explain what we’d do and give you a clear price before any work starts.
Related advice
Frames and glazing around Long Sutton
Rainfall in the South East is lower than in much of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
Homes close to Church of All Saints include some older properties, and the joint between an old wall and a newer frame is generally the first place rain gets in. Managing a site like Long Sutton Church of England Primary School? Then its window and door frames need their mastic kept sound, just like a home’s.
Long Sutton is about 5 miles north of Alton, in Hampshire. Anywhere in RG29, we cover sand mastic for homes and businesses. We cover 683 towns and villages across Hampshire. For nearby work, see our Reading page.
We cover every part of RG29 for sand mastic. Whether your property is on The Street, Wingate Meadow and Wingate Lane or anywhere close by, we can help. Nearby, we also carry out sand mastic in South Warnborough (1 mile west), Well (1 mile east), Bidden (2 miles west), Odiham (2 miles north) and Little Hoddington (2 miles west). We also work in nearby towns such as Basingstoke (8 miles north-west), Farnborough (9 miles north-east), Fleet (6 miles north-east), Aldershot (8 miles east), Alton (5 miles south) and Petersfield (15 miles south).
Near you in Long Sutton
Typical jobs here are in homes near Lord Wandsworth College and Robert May's School. The closest station to Long Sutton is Bentley (Hampshire) station, about 4.2 miles south-east of the centre. Other landmarks nearby include Odiham Castle (3 miles north) and Alton Community Hospital (5.8 miles south). Open spaces near Long Sutton include Dogmersfield Lake and Holybourne Hill.
DIY versus a professional finish
If you’re set on DIY, put the effort into preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it doesn’t work out, we can still put it right.
A careful DIYer can reseal a simple joint, like a short, easy-to-reach joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
Leave it or put it right?
A silicone bead can be quicker, but it can look wrong on a period surround. Sand mastic is the traditional material and finishes neatly against the masonry. Where a wall is exposed, as many are in small places like Long Sutton, wind-driven rain gets into any failed joint, and damp in older walls is slow to dry out.
What it costs depends on the amount of work, how hard the old material is to remove and access to the work. We give a clear quote before any work starts.
Why Long Sutton customers choose us
- An ARBOMaster approved applicator
- Tidy, careful work
- Domestic, commercial and hotel work
- 180+ five-star Google reviews
Read what affects the cost and our reviews.
Landlords, agents and businesses in Long Sutton
Businesses can book us for washrooms, kitchens, offices and more. For commercial premises, we can talk through working times when we quote.
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.
Nearby places to Long Sutton
What else we do in Long Sutton
Different surfaces, different methods
Sash and case windows
A sash window’s box frame sits in the masonry opening. The gap round it is pointed with sand mastic.
Timber door frames
Round a period front door, sand mastic gives the right look.
FAQs for Long Sutton
Do you work for landlords with property near Bentley (Hampshire) station?
Yes, rental work is part of what we do. Just call 0345 464 0079 or email us and tell us about the property, and we’ll give you a clear quote.
Do you cover smaller places like Long Sutton?
Yes, Long Sutton is covered. Our work covers London and the South East, and smaller places are part of that. The journey is planned ahead, so it helps to know about access.
What should I tell you?
Tell us what needs doing and where. We will ask anything else we need to know.
What’s sand mastic made of?
It’s sand mixed with a linseed-oil-based binder, used between timber frames and stone or brick.
Will you leave a mess?
No. We protect the surfaces around the joints, and we clear up the old sealant and our materials before we leave.
What sealant do you use?
Products from Arbo and Everbuild, among others, chosen to suit the joint. We’ll tell you what we are using and why.
Is it possible to take out silicone and use sand mastic instead?
Usually, yes. Once the silicone is out and the joint prepared, sand mastic is applied by hand.
How long does sand mastic take to go off?
A skin forms quite soon, but full hardening takes longer. We will explain what to expect before we leave.
When it isn’t the sealant
Before booking, it’s worth knowing the limits:
- Sash cords, weights and draught-proofing of the sashes
- Decisions on consent for listed homes
- Damaged stone surrounds
Not sure which it is? You can phone 0345 464 0079 or send us an email and we’ll tell you honestly before booking.
Surfaces we seal
- Stone surrounds
- Period & listed homes
- Timber door frames
- Sash and case windows
- Tenement windows
- Brick reveals