Southampton · England
Sand mastic for sash & case windows in Weston, Southampton
Sand mastic across Weston and nearby, with old sealant always removed completely and a 12-month guarantee.
- Gaps round a timber door in stone or brick
- Crumbling sand mastic round a window
- Draughty sash windows at the surround
How to look after the new joints
To keep the joints looking good and working properly:
- Do not paint over the new mastic
- Keep sills and gutters clear so water drains away
- Check the mastic when you check the paintwork
- Ask the planning authority about consent for listed or conservation-area homes
Do not touch or press the mastic while it hardens. It forms a skin fairly soon but needs longer to fully harden.
Good mastic helps keep the frame dry. Once it fails, water can sit against the timber and timber that stays wet can rot.
Sand mastic in Weston, done properly
Sand mastic has long been used to fill the joint between timber frames and masonry. It’s a mix of sand and a linseed-oil-based binder and built up by hand. On period homes, it looks right where silicone wouldn’t. Common call-outs are for mastic round period door frames that has failed and silicone on a period window that looks wrong, on stone surrounds, tenement windows and period & listed homes.
Around Weston, conservatories, garden rooms and patio doors are often part of the house. Their glazing joints and frame seals are as much a part of the job as the windows.
Whatever the size of the job, it’s backed by our one-year guarantee.
- Place
- Weston (SO19, SO31)
- Region
- Southampton
- Cover
- 12 months on all our work
- Quotes
- A clear price before any work starts
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Nearby places to Weston
Other services in Weston
What we can’t put right
In fairness, there are a few things sealant will not fix:
- Whether work needs listed building consent
- Timber that has rotted
- Broken panes
If you’re not sure, just call 0345 464 0079 or email us and we’ll give you a straight answer before booking.
Where we work in Weston
- Sash and case windows
- Stone surrounds
- Tenement windows
- Brick reveals
- Timber door frames
- Period & listed homes
What sand mastic looks like in Weston
Weston 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. That’s hard on the mastic around older windows and doors, especially on the side facing the sea. London and the South East are among the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
Rented homes near Sholing station change hands often, and cracked sand mastic around sash windows lets in the draughts tenants complain about. For an older house near a landmark such as Holy Trinity Church, the joint between an old wall and a newer frame is generally the first place rain gets in.
Weston is about 2 miles north-east of Hythe, in Southampton. Every kind of property in Weston can book us for sand mastic. The work is guaranteed for a year. Our area takes in 40 places across Southampton, large and small.
All of SO19 and SO31 is covered for sand mastic. Sand mastic is available to properties on Swift Road, Scott Road and Weston Lane. Other places close to Weston include Woolston (1 mile north-west), Netley (1 mile south-east), Butlocks Heath (1 mile east), Hound (2 miles south-east) and Old Netley (2 miles east). Further out, we also cover Shirley (4 miles north-west), Regents Park (4 miles north-west), Townhill Park (3 miles north), Midanbury (3 miles north), Chartwell Green (3 miles north) and Harefield (3 miles north-east).
Near you in Weston
Typical jobs here are in homes near Westwood Woodland Park, Woolston School and Chamberlayne College for the Arts and the streets around them. The closest station to Weston is Sholing station, roughly 0.8 miles north of the centre. Other landmarks nearby include Gods House Tower - Museum of Archaeology (1.6 miles north-west) and Westquay (2 miles north-west). Green spaces nearby include Netley Common.
Can I do it myself?
Too much sealant is as bad as too little. A thick, smeared bead looks untidy and does not move well, and the joint depth matters as much as the finish.
What a professional job adds is preparation and the right product. Joints are cleaned back to sound surfaces and dried, and the sealant is chosen for how the joint moves and where it is, and the work is guaranteed for a year.
When to call us in Weston
Most of it is simply age. Sand mastic is a maintenance item like any pointing, depending on exposure and upkeep.
Look out for any of the following:
- Tired mastic found when preparing windows for paint
- Cracked mastic round a front door frame
- A silicone bead on a sash window that spoils the look
- Cement or filler used on old window joints that has cracked
For site and facilities teams at buildings such as Weston Shore Infant School, the mastic around its windows and doors needs looking after like any other building’s.
Questions to ask before booking
- When the joint can take water or movement
- What insurance they hold
- Is the old sealant removed completely?
- What happens if they find a problem under the old sealant
FAQs for Weston
Can you help a landlord with a rental near Sholing station?
Yes. We work for letting agents and landlords as well as homeowners. Just phone 0345 464 0079 or drop us an email with the address and what needs doing, and we’ll give you a clear quote.
Does living near the coast affect sand mastic in Weston?
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.
Are you an approved applicator?
Yes. We are ARBOMaster approved, the scheme for applicators of Arbo sealants.
Do you have insurance?
Yes. Full insurance covers our work.
Is it messy?
Very little: the area around the joints is protected first, and we clear up the old sealant and our materials before we leave.
Should I use sand mastic or silicone?
Sand mastic normally suits period timber windows best. On modern frames, we’d normally use a flexible sealant, and we’ll explain why.
Is it worth trying it myself?
For a simple, easy-to-reach joint, a careful DIYer can do a reasonable job. The usual mistakes are sealing over old sealant, sealing a damp joint and using too much.
Do you do commercial work?
Yes. Larger jobs can be planned room by room or area by area to suit the site.
What happens on the day
When we get to you, we check the joints match what you told us. If anything is different, we explain it before carrying on. After that, the work takes anything from a few hours to a full day, depending on how many windows. In a smaller place like Weston, parking is seldom the issue; lanes, gates and long drives are worth mentioning. For outside work, side access and the height of the joints help us plan.
- We check the window surrounds and agree which joints need renewing.
- Old, loose mastic is raked out and the joint cleaned.
- Large voids are packed out first, so the mastic is not too thick.
- Sand mastic is mixed and applied by hand, then shaped to the joint.
- The mastic is finished to sit tidily against the stone or brick.
How to prepare
- Plan for the work area to be out of bounds to pets and children
- Mention any tricky access
- Move anything stored near the joints
Get a quote
Asking for a quote is easy: let us know what needs doing and where. A few pictures by email make the job easier to understand, and we will take it from there.
Advice
For landlords and businesses
Water getting past a failed joint can damage the building, which is a bigger problem in a rented property. Keeping joints in good order is simple maintenance.
In hotels, rooms out of use cost money, so we plan the work room by room. We’ve worked in hotels as well as homes and businesses.
Quotes for sand mastic in Weston
We quote each job individually. This is what makes a difference:
- The size of the job
- Whether the work is at height
- Whether old sealant or filler has to be cut out
- Whether there’s mould to deal with
Instead of a standard rate, we price the job in front of us: the amount of work, the old material and the access. You will know the price before we begin.
What to tell us for a quote
The more you tell us, the more accurate the quote. When you get in contact, it helps to mention:
- Access, such as stairs, a lift or height
- Pictures of the joints, sent by email
- Where the property is
- Whether it’s a home or a business
Quotes start with a quick conversation. Tell us what’s wrong, where it is and how much there is, and we’ll talk you through what we’d do. Whenever you’re ready, phone 0345 464 0079 or email us.