Hampshire · England
Sand mastic for sash & case windows in Fullerton, Hampshire
Sand mastic for Fullerton, by sealant specialists with 20+ years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- A silicone bead on a sash window that spoils the look
- Cement or filler used on old window joints that has cracked
- Gaps between timber frames and stone or brick
Your questions about sand mastic in Fullerton
Can you do sand mastic in Fullerton?
Yes, Fullerton is within the area we cover. Our work covers London and the South East. You can ring 0345 464 0079 or send us an email and let us know what needs doing, and we will send you a clear quote.
Do you cover smaller places like Fullerton?
Yes, Fullerton is covered. We work across London and the South East, and smaller places are part of that. The journey is planned ahead, so it helps to know about access.
How long does sand mastic take?
It depends on the size of the job, but most jobs take anything from a few hours to a full day, depending on how many windows. We will give you a better idea when we quote.
What is sand mastic?
It’s a mix of sand and a linseed-oil-based binder. It’s applied by hand and shaped to suit the surround.
Can tenants book the work?
We are happy to deal with the tenant, landlord or agent. Just make sure your landlord agrees.
What guarantee comes with the work?
You get our 12-month guarantee to all our work.
Do you work for hotels and businesses?
Yes, regularly. Larger jobs can be planned room by room or area by area.
Is it possible to take out silicone and use sand mastic instead?
Yes, it’s a common request. All the old silicone is removed first so the mastic beds in well.
Sand mastic for homes and businesses in Fullerton
If your home is listed or in a conservation area, check with your local planning authority if consent is needed before window work. Sand mastic is often favoured as a like-for-like material. We work on timber door frames, period & listed homes and tenement windows, and people most often call us about a silicone bead on a sash window that spoils the look and crumbling sand mastic round a window.
In a village or hamlet like Fullerton, older cottages and farmhouses often have timber windows set in stone or brick. Not every older frame suits a modern silicone bead, and sometimes a traditional sand mastic is the better choice.
A one-year guarantee comes as standard, so you are not left on your own once the job is done.
- Where
- Fullerton (SP11)
- Region
- Hampshire
- Guarantee
- One year on every job
- Price
- A clear price before any work starts
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
Places near Fullerton
What else we do in Fullerton
DIY versus a professional finish
Sealing over old silicone is the commonest DIY error. New silicone won’t bond to old, so it peels away and traps moisture behind it. All the old material has to come out first.
What a professional job adds is preparation and the right product. We take joints back to clean, dry surfaces, and the sealant is matched to the joint and its conditions.
Quotes for sand mastic in Fullerton
Every job gets its own quote. This is what makes a difference:
- Mould in or behind the old joints
- The old material and how stubborn it is
- The number and length of the joints
- The type of sealant required
A few things move the cost up or down: the old material and how easily it comes out, any mould to treat, and whether we need extra access for height. We take all of that into account in your quote.
What to tell us for a quote
A few details help us give you an accurate quote. When you ask for a quote, tell us:
- The type of property
- What’s wrong with the joints now
- Roughly how big the job is
- Any previous sealing or DIY work
For a quick quote, get us on the phone, or email us if that is easier. Describe what needs sealing and we will explain what’s involved and give you a clear price.
Surface by surface
Sash and case windows
Most of our sand mastic work is on sash windows. Each joint round the box is raked out and renewed.
Stone surrounds
Sand mastic sits naturally against stone. It finishes to look like part of the surround.
The process
There’s no need to move everything out before we come, only the area right around the joints. We protect the rest, and the work takes a few hours per window, depending on the condition of the joints in most cases. Somewhere as small as Fullerton, 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.
- We remove the old, loose mastic.
- We pack any deep voids first.
- The sand mastic is mixed and pressed into the joint by hand.
- The surface is finished to suit the stone or brick.
Preparing for the visit
- Tell us about any previous sealing or DIY attempts
- On commercial sites, let us know about site rules
- Let us know about stairs, lifts or work at height
Ask for a quote
For sand mastic in Fullerton, phone 0345 464 0079 or drop us an email. A short description of the job and where it is helps us quote, and you will get a clear quote before we start.
Read more
Keeping the joints in good condition
Joint life depends on how it’s used and looked after. We suggest:
- Ask us before painting near the mastic
- Make sure water runs off the sill
- Renew mastic before redecorating the windows
- Inspect the joints round the windows every year or so
Avoid sealing over the mastic with silicone. If anything cracks, get it looked at rather than patching it.
Crumbling mastic lets rain into the joint. It can soak into the frame and the surrounding masonry, so renewing it early is worth it.
What sealant work cannot fix
It helps to know what we can’t do:
- Timber that has rotted
- Crumbling stone or brickwork round the window
- Whether work needs listed building consent
Not sure which it is? You can ring 0345 464 0079 or drop us an email and we will tell you honestly.
Where we work in Fullerton
- Timber door frames
- Stone surrounds
- Brick reveals
- Sash and case windows
- Period & listed homes
- Tenement windows
Do you need sand mastic in Fullerton?
Water gets into small cracks in the mastic and loosens it further. Windows facing the weather tend to go first.
Any of these means the joints need attention:
- Mastic round period door frames that has failed
- Cement or filler used on old window joints that has cracked
- Tired mastic found when preparing windows for paint
- Old sand mastic that has cracked, crumbled or fallen out
For landlords with property near Andover station, cracked sand mastic around sash windows lets in the draughts tenants complain about.
What to look for in a quote
- How the colour is chosen
- Whether all the old sealant comes out first
- The length of the guarantee
- Which sealant they’ll use, and why
Sand mastic in Fullerton: local notes
Compared with the north and west, the South East gets less rain, 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 Church of St Nicholas, frames set in older brick or stone need a sealant that suits the wall as well as the frame.
Fullerton is about 4 miles south of Andover, in Hampshire. Every kind of property in Fullerton can book us for sand mastic, old or new, large or small. Every job comes with our 12-month guarantee. Our area takes in 683 places across Hampshire, from the larger towns to small villages. Southampton is on our list too, around 16 miles away.
Here we cover the SP11 postcode area for sand mastic. We also cover Cottonworth (1 mile north-east), Chilbolton (1 mile east), Leckford (1 mile south), Wherwell (1 mile north-east) and Wherwell Wood (2 miles north). Further out, we also cover Winchester (9 miles south-east), Eastleigh (14 miles south), Andover (4 miles north), Chandler's Ford (12 miles south), Romsey (11 miles south) and Hyde (9 miles south-east).
Near you in Fullerton
We work in homes and buildings around Longstock Park and the streets around them. For rail, the closest station is Andover station, roughly 4.3 miles north of the centre. Other landmarks nearby include Andover War Memorial Hospital (4.6 miles north). Not far away are Anton Lakes and Mill Lake.