Hampshire · England

Sand mastic for sash & case windows in Weston, Hampshire

Our applicators work in Weston on traditional burnt sand mastic around sash and case windows and doors in stone and brick. Old material cut out, joints cleaned and sealed neatly.

  • Open joints round the window box
  • Crumbling sand mastic round a window
  • Draughty sash windows at the surround

Sand mastic near Weston

Sand mastic for homes and businesses in Weston

A silicone bead around a sash window can look out of place and doesn’t suit the building. Sand mastic is the traditional choice, and we can replace one with the other. If you have mastic round period door frames that has failed and silicone on a period window that looks wrong, we can help, whatever the surface.

Around Weston, many homes face open ground, so their windows and doors take the full weather. Exposed frames and sills lose their mastic sooner than sheltered ones.

A 12-month guarantee comes as standard.

Where
Weston (GU32)
Wider area
Hampshire
Cover
A year, on every job
Quote
A clear quote up front
Telephone
0345 464 0079
Updated
26 October 2026
Outdoor mastic being applied where a white frame meets red brickwork, below the fascia and gutter

Common questions in Weston

Will you come out to Weston?

Yes, we do. 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.

Can you help a landlord with a rental near Petersfield station?

Yes, landlords and agents are among the people we work for. Just ring 0345 464 0079 or send us an email with the address and what needs doing, and we will give you a clear quote.

What does sand mastic cost?

Every job is different, so each one gets its own quote. To get one, ring 0345 464 0079 or send us an email with a short description of the job.

Can you work on commercial sites?

Yes, regularly. We can plan bigger jobs in stages.

What guarantee comes with the work?

Our 12-month guarantee applies to all our work.

Can new sealant go over the old?

No, it won’t last. It can look neat for a few weeks, but the new layer lifts away from the old one. The old sealant has to come out completely.

Can sand mastic be painted?

Traditional guidance is not to paint over sand mastic. Ask us before you decorate around it and we will advise.

Can old silicone round a sash window be swapped for sand mastic?

Yes, we do this often. All the old silicone is removed first so the mastic can sit properly.

What happens on the day

There’s no need to move everything out, only the area right around the joints. We protect the rest, and the job takes anything from a few hours to a full day, depending on how many windows in most cases. For a village or hamlet like Weston, 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.

  1. We check each window surround and the condition of the joint.
  2. We rake out the old mastic and clean the joint.
  3. We fill deep gaps so the new mastic isn’t too thick.
  4. We point the joint with sand mastic by hand.
  5. The finish is dressed neatly.

Preparing for the visit

  • Mention any parking rules near the property
  • Let us know about stairs, lifts or work at height
  • Mention any leaks or damp you’ve noticed

Get a quote

To get a quote, phone 0345 464 0079 or drop us an email and tell us where the job is and what the problem looks like. We will give you a clear quote before any work starts.

Get a quick quote

Advice

When it is not the sealant

It helps to know what we can’t do too:

  • Timber that has rotted
  • Sashes that rattle, stick or won’t open
  • Cracked or broken glass

Not sure which it is? You can call 0345 464 0079 or drop us an email and we’ll tell you honestly before booking.

Joints and surfaces we work on

  • Period & listed homes
  • Stone surrounds
  • Sash and case windows
  • Brick reveals
  • Timber door frames
  • Tenement windows

Do you need sand mastic in Weston?

Paint, silicone or cement used over old mastic causes problems. They don’t suit the joint and we normally remove them.

Common reasons people contact us are:

  • Old sand mastic that has cracked, crumbled or fallen out
  • Open joints round the window box
  • Modern sealant on a period surround
  • Old cement repairs round a window that have failed

Uppark, about 4 miles south-east, is one of the historic houses in the wider area around Weston.

What your quote should include

  • Are they insured?
  • Is the old sealant removed completely?
  • Is VAT in the price?
  • How the joint is cleaned and prepared

10 questions to ask before you book

DIY versus a professional finish

A DIY attempt does not rule out a professional job. We remove it and do the joint properly, so tell us about it when you ask for a quote.

Too much sealant is as bad as too little. A thick, smeared bead looks untidy and doesn’t move well, and getting the depth right matters as much as the look.

For landlords and businesses

Mouldy or split sealant often shows up at the end of a tenancy, and it’s quick to put right between tenancies. Several properties can be quoted together.

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 that we can handle for you.

Frames and glazing around Weston

Rainfall in the South East is lower than in much of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind. Historic houses like Uppark (about 4 miles south-east) are a reminder that the area around Weston has older buildings as well as new. In older buildings, older frames set in brick or stone need a sealant that suits them, and sometimes that is traditional sand mastic.

Schools such as Buriton Primary School are buildings too, and larger buildings have plenty of frames, and the mastic around each one ages. If you let a flat or house near Petersfield station, older sash windows in a rental need their mastic kept sound to keep the weather out.

Weston is about 1 mile south-west of Petersfield, in Hampshire. If you need sand mastic in Weston, it’s easy to get a quote: please call 0345 464 0079 or drop us an email. We cover Hampshire from our Crawley base, Weston included. Our Hampshire coverage runs to 683 places, and Weston is one of them. Our Portsmouth page covers work nearby, about 14 miles away.

Every address in GU32 is covered for sand mastic. We cover properties on Weston Lane and Wylds Lane. If you’re just outside Weston, we cover Buriton (1 mile south-east), Ramsdean (1 mile west), Nursted (2 miles east), Chalton (4 miles south) and Blendworth (5 miles south). Further out, we also cover Gosport (15 miles south-west), Havant (9 miles south), Fareham (14 miles south-west), Horndean (6 miles south), Alton (11 miles north) and Waterlooville (8 miles south-west).

Near you in Weston

Around Weston, our work takes us to homes and buildings near The Petersfield School and The Petersfield School and the streets around them. The closest station to Weston is Petersfield station, roughly 1.4 miles north-east of the centre. Well-known places in the area include Petersfield Community Hospital (1.2 miles north-east) and Bear Museum (1.4 miles north-east). The countryside around Weston includes Liss Riverside Railway Walk South and War Down.

Map of Weston © OpenStreetMap contributors

How we quote for sand mastic

Every job gets its own quote. These are the things that affect it:

  • Working hours on commercial sites
  • Whether there’s mould to deal with
  • The number of rooms or windows
  • The product the joint needs

There are no prices on our website, because the cost depends so much on the job itself. For a quick quote, please phone 0345 464 0079 or email us.

Helping us quote

To help us quote quickly, please include:

  • The type of property
  • What the problem is, such as mould, gaps, leaks or cracking
  • Any access issues, like height or stairs
  • Photos by email, if that’s easy

Call for a quick quote, or send an email if you’d rather. Describe what needs sealing and we’ll explain what’s involved and give you a clear quote.

Keeping the joints in good condition

A little care helps the new joints last. Our advice:

  • Clear gutters so water doesn’t pour onto the windows
  • Ask a joiner to look at soft timber first
  • Check with your local planning authority if your home is listed
  • Sort the mastic before the decorators arrive

When preparing windows for paint, take care around the mastic. Hard scraping can loosen it.

Gaps round a sash box let in draughts and rain. Left, the gap tends to get bigger as more mastic falls out.

20+ yearsMastic and sealant specialists
ARBOMaster approvedApproved applicator for Arbo sealants
Fully insuredDomestic, commercial and hotels
One-year guaranteeOn every job