Hampshire · England
Sand mastic for sash & case windows in Redenham, Hampshire
Window and door surrounds in Redenham need attention? We cut out the old, prepare the joints and apply the right sealant, with a 12-month guarantee.
- Failed mastic on an exposed elevation
- Draughts and rain around sash boxes
- Cracked mastic round a front door frame
Sand mastic in Redenham, done properly
Sand mastic suits most period window surrounds. On modern frames we’d normally use a flexible sealant and we will explain which is best for yours. Typical jobs include mastic worn away on windows facing the weather and old sand mastic that has cracked, crumbled or fallen out, across stone surrounds, period & listed homes and brick reveals.
Mastic can only go onto a dry, clean joint, so window work in Redenham is booked around the forecast. Let us know about access to all the frames, upstairs ones included.
Every job is covered by our one-year guarantee, wherever you are in Hampshire.
- Location
- Redenham (SP11)
- Wider area
- Hampshire
- Cover
- A year, on every job
- Quote
- A clear price before work begins
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
Why it’s worth doing now in Redenham
New mastic over crumbling mastic won’t hold. We remove the loose material first so the new work lasts. In a small place like Redenham, homes can be exposed to wind and rain, which finds any gap, and older walls, once damp, take a long time to dry.
Combining jobs into one visit normally makes better use of the time than several visits. We will give you a clear quote for the lot.
Why choose Mr Mastic in Redenham
- Quality sealants from Arbo and Everbuild
- 4.9 on Google from 180+ five-star reviews
- Full insurance on every job
- Any old sealant cut out fully, not covered over
Take a look at our cost guide or our reviews.
How the job changes by surface
Timber door frames
Sand mastic is used round timber door frames too. The method is the same as for windows.
Sash and case windows
The box of a sash and case window sits in the stone or brick opening. The gap round it is pointed with sand mastic.
Work for landlords, hotels and businesses
We regularly work with letting and managing agents. Tell us the address, the job and how access works.
We also work for businesses, from offices to washrooms and kitchens. On commercial sites, working times can be discussed when we quote.
Redenham homes and the weather
Rainfall in the South East is lower than in much of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
Schools such as Appleshaw St Peter's CofE Primary School are buildings too, and its window and door frames need their mastic kept sound, just like a home’s. Letting a property close to Andover station? Then cracked sand mastic around sash windows lets in the draughts tenants complain about. In the older streets around Church of St Peter in the Wood, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
Redenham is about 4 miles north-west of Andover, in Hampshire. If you need sand mastic in Redenham, please phone 0345 464 0079 or send us an email for a quick quote. We’re based in Crawley and cover Hampshire, Redenham included. 683 places in Hampshire are on our list. We also work in Southampton, around 24 miles away.
Postcode districts we cover here for sand mastic: SP11. We also cover Appleshaw (1 mile south-east), Faberstown (1 mile west), Clanville (1 mile east), Chute Forest (2 miles north) and Fyfield (2 miles south). Within a short drive, we also cover Andover (4 miles south-east), Tidworth (4 miles west), Whitchurch (10 miles east), East Anton (5 miles east), Harestock (15 miles south-east) and Overton (13 miles east).
Local landmarks in Redenham
Around Redenham, our work takes us to homes and buildings near Walnut Tree Inn, among other places. The closest station to Redenham is Andover station, roughly 4 miles south-east. Nearby you’ll also find Ludgershall Castle (2.6 miles north-west) and Andover War Memorial Hospital (3.8 miles south-east). Not far away are Quarley Hill and Anton Lakes.
Keeping the joints in good condition
Looking after new joints is easy:
- Make sure water runs off the sill
- Get any rot dealt with first
- Inspect the joints round the windows every year or so
- Find out about consent before window work on a listed home
Keep gutters and sills clear so water runs away from the surround. Water sitting against the mastic shortens its life.
Once mastic starts to crumble, rain gets in. That water can reach the timber frame and the wall, so renewing it early is worth it.
Redenham: your questions answered
Do you cover Redenham for sand mastic?
Yes. We work across London and the South East, and Redenham is part of that. Just call 0345 464 0079 or email us with a few details of the job, and we will send you a clear quote.
Can you help a landlord with a rental near Andover station?
Yes, we work for landlords and letting agents. You can call 0345 464 0079 or drop us an email with the address and a few details, and we’ll give you a fixed price before we start.
Are you fully insured?
Yes. We are fully insured for domestic and commercial work.
Are you an approved applicator?
Yes. ARBOMaster is the approved applicator scheme for Arbo sealants, and we’re part of it.
What’s sand mastic made of?
Sand plus a binder based on linseed oil. It’s built up in the joint by hand and finished to sit neatly against the masonry.
What does sand mastic cost?
The cost depends on the size of the job, access and how much old sealant has to come out. Ask us for a quote.
Can old silicone round a sash window be swapped for sand mastic?
Generally, yes. Once the silicone is out and the joint prepared, sand mastic is applied by hand.
When will the new mastic be hard?
Not straight away. It skins first and hardens fully later, and we will tell you what to expect.
Also near Redenham
What else we do in Redenham
How it works
When we arrive, we look over the joints with you first. Surfaces next to the work are protected before any work starts. The work generally takes a few hours for a single window, longer for several. Somewhere as small as Redenham, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- First we agree which joints need doing.
- Old mastic and any loose material are raked out.
- Deep gaps are packed so the mastic sits at the right depth.
- The sand mastic is mixed and pressed into the joint by hand.
- We dress the finish so it sits neatly against the masonry.
Before we arrive
- Tell us about access, such as stairs, a lift or high-level joints
- For indoor joints, keep the area dry beforehand if you can
- Let us know about earlier repairs to the joints
How to get a quote
For a quote, ring 0345 464 0079 or email us with the location and a short description of the problem. We’ll send you a clear quote before any work starts.
Read more
Honest limits
Sealant isn’t the answer to every problem, and we will tell you before any work starts. It will not solve:
- Timber that has rotted
- Whether work needs listed building consent
- Sashes that need overhauling
Not sure which it is? You can call 0345 464 0079 or send us an email and we will tell you honestly before you book.
Joints and surfaces we work on
- Brick reveals
- Stone surrounds
- Sash and case windows
- Timber door frames
- Period & listed homes
- Tenement windows
What affects the quote in Redenham
For a quick quote, just ask. What matters most is:
- How many rooms, windows or areas are involved
- Mould in or behind the old joints
- How much old sealant there is and how hard it is to remove
- When we can work, for business premises
No two jobs are quite the same, so we quote each one individually. Size, access and the product the joint needs all make a difference, and we’ll explain the quote if you ask.
Helping us quote
Before you ask for a quote, have a think about:
- What’s wrong with the joints now
- Pictures of the joints, sent by email
- Where the property is
- How we’d reach the joints
For a quick quote, get us on the phone, or send an email if you’d rather. Tell us about the joints that need doing and we’ll talk you through the work before giving you a price.