Hampshire · England
Sand mastic for sash & case windows in Broad Oak, Hampshire
Sand mastic for Broad Oak, by sealant specialists with 20+ years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Old sand mastic that has cracked, crumbled or fallen out
- Silicone on a period window that looks wrong
- Draughty sash windows at the surround
Sand mastic in Broad Oak: local notes
The South East is one of the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
If you live in an older home near All Saints Church, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint. For landlords with property near Winchfield station, older sash windows in a rental need their mastic kept sound to keep the weather out.
Broad Oak is about 4 miles west of Fleet, in Hampshire. From the centre of Broad Oak to the outskirts, we cover sand mastic for every kind of property. 683 places in Hampshire are on our list. Reading is on our list too, about 13 miles from Broad Oak.
Every address in RG29 is within our area for sand mastic. Neighbouring places we cover for sand mastic include Odiham (1 mile south-west), North Warnborough (1 mile west), Warnborough Green (2 miles west), Winchfield (2 miles north-east) and Greywell (2 miles west). We also work in nearby towns such as Basingstoke (8 miles west), Farnborough (7 miles east), Fleet (4 miles east), Aldershot (7 miles east), Alton (8 miles south) and Yateley (7 miles north-east).
Near you in Broad Oak
We work in homes and buildings around The Waterwitch pub and Robert May's School, among other places. The nearest railway station is Winchfield station, roughly 1.8 miles north of the centre. Well-known places in the area include West Green House Agricultural Museum (2.9 miles north) and Hart Shopping Centre (3.8 miles east). The countryside around Broad Oak includes Fleet Pond Nature Reserve and Tundry Hill.
Sand mastic in Broad Oak, done properly
Silicone on a period window often looks wrong and isn’t always the right material. Sand mastic gives a finish that matches the age of the house, and we can replace one with the other. Typical jobs include old cement repairs round a window that have failed and mastic that needs renewing before redecorating, across tenement windows, period & listed homes and timber door frames.
Outdoor sealant needs dry, clean surfaces, so work on frames around Broad Oak is planned for dry weather. Let us know about access to all the frames, upstairs ones included.
Big or small, you get the same 12-month guarantee.
- Where
- Broad Oak (RG29)
- Wider area
- Hampshire
- Guarantee
- 12 months on all our work
- Price
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
What we cannot put right
To be straight with you, some problems need a different trade:
- Cracked or broken glass
- Damaged stone surrounds
- Sash cords, weights and draught-proofing of the sashes
If in doubt, ring 0345 464 0079 or send us an email and we will say what we think before you book.
Joints and surfaces we work on
- Sash and case windows
- Timber door frames
- Stone surrounds
- Tenement windows
- Period & listed homes
- Brick reveals
Landlords, agents and businesses in Broad Oak
Housing providers, facilities teams and property managers book us too. We can quote a run of properties together, and we are fully insured.
A neglected joint can let water reach the structure, which matters even more when someone else lives there. Resealing at the right time is simple maintenance that we can handle for you.
Also near Broad Oak
What else we do in Broad Oak
Signs you need sand mastic in Broad Oak
Paint, silicone or cement used over old mastic causes problems. They don’t move with the timber and we normally remove them.
It’s worth asking for a quote if you see:
- Mastic worn away on windows facing the weather
- Mastic that needs renewing before redecorating
- Open joints round the window box
- Old cement repairs round a window that have failed
Managing a site like Mayhill Junior School? Then larger buildings have plenty of frames, and the mastic around each one ages.
What to look for in a quote
- What happens if the job turns out different
- How the joint is cleaned and prepared
- Whether all the old sealant comes out first
- Are they insured?
Surface by surface
Brick reveals
An open joint at a brick reveal lets weather in. Renewing the mastic closes it.
Period and listed homes
Materials matter on listed and conservation-area homes. Like-for-like sand mastic is usually favoured.
What happens if it’s left?
New mastic over crumbling mastic won’t hold. Raking out and preparing the joint gives it a sound base so the new mastic stays put. Where a wall is exposed, as many are in small places like Broad Oak, wind-driven rain gets into any failed joint, and older walls, once damp, take a long time to dry.
Commercial jobs are quoted on the same basis as homes: how much there is to do, how we reach it and what it needs, along with when we can work on site. Call for a quick quote and we will go through it with you.
Why choose Mr Mastic in Broad Oak
- An ARBOMaster approved applicator
- Trusted Arbo and Everbuild sealants
- Anti-fungal silicone where joints get wet
- More than 20 years in sealant work
See what affects the cost or our reviews.
What we do, step by step
We bring everything the job needs with us. Once we’ve agreed what’s being done, we protect the area and start. It normally takes a few hours for a single window, longer for several. Somewhere as small as Broad Oak, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- First, we look at the surrounds with you and agree what needs doing.
- Old, loose mastic is raked out and the joint cleaned.
- Deep voids are packed so the mastic is the right thickness.
- The mastic is mixed, pressed into the joint by hand and shaped.
- We dress the surface so it sits neatly against the masonry.
How to prepare
- On commercial sites, let us know about site rules
- For indoor joints, keep the area dry beforehand if you can
- Let us know about stairs, lifts or work at height
Getting a quote
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 price.
Related advice
Broad Oak questions
Is Broad Oak within the area you cover?
Yes, Broad Oak 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.
Can you do sand mastic in Broad Oak?
Yes. We work across London and the South East, and Broad Oak is part of that. Just phone 0345 464 0079 or email us with a few details of the job.
I rent my home. Can I book you?
Yes, but check with your landlord or agent first. Many landlords are glad to have it sorted.
Can you do several jobs on one visit?
Yes, we can. Several rooms, windows or areas can go on one quote.
Is there any odour?
Sometimes, a little. It fades as the sealant cures, and ventilation helps.
How long does sand mastic take to harden?
The surface skins quite quickly and it hardens fully over a longer time. The weather and joint depth both affect it.
Is consent needed for window work on a listed home?
Speak to your local planning authority before work starts. Like-for-like sand mastic is often the preferred finish, but they decide.
Do you guarantee sand mastic work?
All our work has a one-year guarantee, and we’re fully insured.
What affects the quote in Broad Oak
The price is agreed before any work begins. It’s based on:
- Working hours on commercial sites
- The type of sealant required
- The number of rooms or windows
- Whether there’s mould to deal with
What it costs depends on the amount of work, how much old material has to come out and access to the work. We give a clear quote before we start.
Asking for a quote
To make quoting easier, please include:
- Roughly how big the job is
- What’s wrong with the joints now
- Access, such as stairs, a lift or height
- Any previous sealing or DIY work
Asking for a quote is easy: let us know the job and the location and its rough size. Photos by email help us understand the job.