Hampshire · England
Sand mastic for sash & case windows in Broadgate, Hampshire
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for Broadgate, backed by a 12-month guarantee. Call for a quick quote.
- Mastic round period door frames that has failed
- Draughty sash windows at the surround
- Weathered mastic on the most exposed windows
How the job changes by surface
Sash and case windows
On a sash window, the mastic joint shows on the outside so we finish it carefully.
Tenement and terrace windows
Windows above ground floor need the right access. Tell us the height and we’ll confirm what’s needed.
Sand mastic in Broadgate, done properly
Burnt sand mastic is a traditional material that sits naturally against stone and brick. It suits period and listed homes, where modern sealant can look out of place. If you have a silicone bead on a sash window that spoils the look and gaps where the frame meets the masonry, we can help, on timber door frames, sash and case windows and tenement windows alike.
Somewhere as small as Broadgate, older homes often have timber frames set in stone or brickwork. Not every older frame suits a modern silicone bead, and sometimes a traditional sand mastic is the better choice.
Each job carries a 12-month guarantee.
- Where
- Broadgate (SO51)
- Wider area
- Hampshire
- Guarantee
- 12 months on all our work
- Quote
- A clear price before work begins
- Call
- 0345 464 0079
- Updated
- 26 October 2026
What sealant work cannot fix
It helps to know what we cannot do:
- Timber that has rotted
- Sashes that need overhauling
- Putty and glazing repairs
If you are not sure, just phone 0345 464 0079 or email us and we’ll give you a straight answer before you book.
Joints and surfaces we work on
- Stone surrounds
- Timber door frames
- Brick reveals
- Period & listed homes
- Tenement windows
- Sash and case windows
What happens on the day
At the end, we look at the finished work together and explain the cure time. The work normally takes a few hours for a single window, longer for several, depending on the size of the job. Somewhere as small as Broadgate, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- We start by checking each surround and agreeing the joints to renew.
- The loose and crumbling mastic is raked out and the joint cleaned.
- Large voids are packed out first, so the mastic is not too thick.
- The mastic is mixed, pressed into the joint by hand and shaped.
- The mastic is finished to sit tidily against the stone or brick.
Getting ready for the visit
- For business premises, tell us about site rules or sign-in
- Mention any parking rules near the property
- Mention if the joints have been sealed before
How to get a quote
Want a quote for sand mastic? Please ring 0345 464 0079 or send us an email and tell us about the job. We’ll explain what we’d do and give you a clear quote before we start.
Related advice
Broadgate: your questions answered
I let a flat near Chandlers Ford station. Can you help?
Yes, rental work is part of what we do. Just call 0345 464 0079 or drop us an email and tell us about the property, and we will give you a clear quote.
Will you come out to Broadgate?
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.
What guarantee comes with the work?
Every job comes with our 12-month guarantee.
Where do you work from?
Mr Mastic is based in Crawley. Our applicators cover Broadgate.
Is sand mastic better than silicone for my windows?
It depends on the window. Period windows in stone or brick normally suit sand mastic, while modern frames normally get a flexible sealant.
How long does the job take?
That depends on how much there is to do, but most jobs take a few hours per window, depending on the condition of the joints. We’ll tell you when we quote.
Do you have insurance?
Yes. We are fully insured, with over 20 years’ experience in sealant work.
What’s sand mastic made of?
Sand mastic is a traditional material for pointing round windows and doors. It combines sand with a linseed-oil-based binder.
Do you need sand mastic in Broadgate?
Water gets into small cracks in the mastic and pushes it out. Exposed elevations normally fail first.
Most people get in touch when they notice something like this:
- A silicone bead on a sash window that spoils the look
- Patchy fillers round a sash window
- Draughts and rain around sash boxes
- Mastic worn away on windows facing the weather
For landlords with property near Chandlers Ford station, any sash windows need sound mastic to keep draughts and rain out.
What your quote should include
- What the quote includes, VAT included or not
- Whether all the old sealant comes out first
- What preparation is included
- What happens if the job turns out different
For landlords and businesses
Businesses can book us for washrooms, kitchens, offices and more. On commercial sites, working times can be discussed when we quote.
Mouldy or split sealant often shows up at the end of a tenancy, and it’s easy to sort out between tenants. Several properties can go on one quote.
Aftercare tips
Aftercare is simple:
- Keep sills and gutters clear so water drains away
- Check the mastic when you check the paintwork
- Find out about consent before window work on a listed home
- Get any rot dealt with first
Make sure water drains away from the window surround. Constant wetting wears the mastic faster.
Sound mastic protects the frame. Failed mastic lets water reach the timber, which can lead to rot.
Towns and villages near Broadgate
More services for Broadgate
What affects the quote in Broadgate
You’ll get a clear quote before any work starts. It takes into account:
- How much old sealant there is and how hard it is to remove
- When we can work, for business premises
- How easy the joints are to reach
- The product the joint needs
The cost reflects the work involved, not a rough estimate. That is why we ask a few questions first.
Asking for a quote
What to tell us when you ask for a quote:
- If it’s domestic, commercial or a hotel
- Whether it has been sealed before
- Roughly how big the job is
- Where the job is, and your postcode
To get a quote, phone 0345 464 0079 or send us an email and tell us where the job is and what the problem looks like. We’ll send you a clear quote before any work starts.
Sand mastic in Broadgate: local notes
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. With historic houses such as South Stoneham House (about 4.9 miles south) nearby, there’s older building stock in the area around Broadgate as well as newer homes. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window.
If you live in an older home near Church of St Mark, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall. Schools such as Ampfield Church of England Primary School are buildings too, and the mastic around its windows and doors needs looking after like any other building’s.
Broadgate is about 2 miles north-west of Chandler's Ford, in Hampshire. Homes, rented property, offices and hotels in Broadgate is covered for sand mastic, old or new, large or small. The work is guaranteed for a year. Our Hampshire coverage runs to 683 places, and Broadgate is one of them. We also work in Southampton, about 6 miles from Broadgate.
Postcode districts we cover here for sand mastic: SO51. That includes homes and businesses on Hook Road, Broadgate Farm and Woodlea Way and the roads around them. Nearby, we also carry out sand mastic in Knapp (1 mile north-west), Ampfield (1 mile west), Gosport (1 mile west), Crampmoor (2 miles west) and Lower Slackstead (2 miles north-west). Within a short drive, we also cover Winchester (6 miles north-east), Eastleigh (4 miles south-east), Fareham (14 miles south-east), Andover (15 miles north), Totton (7 miles south-west) and Hedge End (8 miles south-east).
Near you in Broadgate
Locally, jobs take us to homes and businesses close to White Horse Public House and Thornden School. Broadgate’s nearest station is Chandlers Ford station, roughly 1.8 miles south-east of the centre. Nearby you will also find Romsey Community Hospital (3.2 miles west) and Eastleigh Museum (3.5 miles south-east). The countryside around Broadgate includes Flexford Nature Reserve.