Hampshire · England
Otterbourne Sand Mastic
Window and door surrounds in Otterbourne need attention? We remove the old material, prepare the joints and seal them properly, with a 12-month guarantee.
- Gaps round a timber door in stone or brick
- Open joints round the window box
- Old cement repairs round a window that have failed
Leave it or put it right?
New sash windows are a major, costly change, and in listed buildings it may need consent. If the frames are sound, renewing the mastic deals with gaps and draughts at the surround. In a small place like Otterbourne, homes can be exposed to wind and rain, which finds any gap, and damp in older walls is slow to dry out.
Commercial jobs are quoted on the same basis as homes: how much there is to do, how we reach it and what it needs. Call for a quick quote and we will go through it with you.
What you get with us
- Trusted Arbo and Everbuild sealants
- Homes, businesses and hotels
- Tidy, careful work
- An ARBOMaster approved applicator
Take a look at what affects the cost or what customers say.
Sand mastic in Otterbourne
Old sand mastic cracks, crumbles and falls out over time and gaps open up round the frame. We rake it out and renew it so the surround looks right again. If you have cracked mastic round a front door frame and open joints round the window box, we can help.
Somewhere as small as Otterbourne, older homes often have timber frames set in stone or brickwork. Older buildings like these don’t always suit modern silicone, so the sealant has to be chosen to suit the building.
A one-year guarantee comes with the work, just as it does everywhere we cover.
- Location
- Otterbourne (SO21)
- Wider area
- Hampshire
- Guarantee
- A year, on every job
- Quotes
- A clear price before any work starts
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
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
- Go gently near the mastic when preparing windows
- Clear gutters so water does not pour onto the windows
- Look over the window mastic once a year
Check the mastic when you check the paintwork. Catching cracks early keeps repairs small.
Sound mastic protects the frame. Once it fails, water can sit against the timber and timber that stays wet can rot.
Surface by surface
Timber door frames
Doors face weather and wear and the mastic can crack early. It’s renewed by hand.
Stone surrounds
The stone is treated with care when the old mastic comes out.
How the visit works
You do not need to clear the whole room or building, just the space around the work. Everything nearby is protected, and the job takes a few hours per window, depending on the condition of the joints in most cases. Somewhere as small as Otterbourne, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- Each surround is checked first.
- We rake out the old mastic and clean the joint.
- We fill deep gaps so the new mastic isn’t too thick.
- We point the joint with sand mastic by hand.
- The finish is dressed neatly.
Before we arrive
- On commercial sites, let us know about site rules
- Keep pets and children clear of the area while we work
- Mention if the joints have been sealed before
Get a quote
Call for a quick quote, or send an email if you’d rather. Describe what needs sealing and we will talk you through the work before giving you a price.
Read more
When to call us in Otterbourne
Age is the main cause. Even well-laid mastic needs renewing in time and how long it lasts depends on the weather it faces.
Common reasons people contact us include:
- Mastic round period door frames that has failed
- Silicone on a period window that looks wrong
- Cement or filler used on old window joints that has cracked
- Crumbling sand mastic round a window
For landlords with property near Shawford station, cracked sand mastic around sash windows lets in the draughts tenants complain about.
What your quote should include
- What the cure time is
- Is VAT in the price?
- How the colour is chosen
- Whether they seal over old material or remove it
Towns and villages near Otterbourne
More services for Otterbourne
Windows and doors in Otterbourne
London and the South East are among the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
Managing a site like Otterbourne Church of England Primary School? Then its window and door frames need their mastic kept sound, just like a home’s. For an older house near a landmark such as Church of St Matthew, frames set in older brick or stone need a sealant that suits the wall as well as the frame.
Otterbourne is about 3 miles north-east of Chandler's Ford, in Hampshire. Jobs in Otterbourne get the same care as everywhere else we work: the old material taken out, joints prepared properly and a 12-month guarantee. Otterbourne is one of 683 places in Hampshire we cover. Southampton is on our list too, around 7 miles away.
Every address in SO21 is covered for sand mastic, from the main roads to the quietest streets. If you need sand mastic at a property on Oakwood Avenue, Meadowcroft Close and Brooklyn Close or anywhere close by, we can help. Other places close to Otterbourne include South Down (1 mile north-east), Compton (1 mile north), Shawford (1 mile north-east), Twyford (1 mile north-east) and Ladwell (2 miles west). We also work in nearby towns such as Winchester (4 miles north), Eastleigh (3 miles south), Fareham (13 miles south-east), Andover (15 miles north-west), Totton (9 miles south-west) and Chandler's Ford (3 miles south-west).
Near you in Otterbourne
Locally, jobs take us to homes and businesses close to Thornden School, The White Horse Public House and Thornden School. The nearest railway station is Shawford station, about 1.1 miles north-east. Nearby you’ll also find Eastleigh Museum (2.9 miles south) and Wolvesey Castle (3.8 miles north). Green spaces nearby include Twyford Down and Shawford Down.
When something else is needed
Before booking, it’s worth knowing the limits:
- Decayed frames that need repair
- Crumbling stone or brickwork round the window
- Sash cords, weights and draught-proofing of the sashes
If in doubt, ring 0345 464 0079 or send us an email and we’ll say what we think before you book.
Where we work in Otterbourne
- Sash and case windows
- Brick reveals
- Period & listed homes
- Timber door frames
- Tenement windows
- Stone surrounds
Quotes for sand mastic in Otterbourne
The quote reflects the job in front of us. We take into account:
- How much old sealant there is and how hard it is to remove
- The product the joint needs
- How many areas need sealing
- How easy the joints are to reach
No two jobs are quite the same, so each one gets its own quote. The number of joints, how easy they are to reach and the sealant needed all make a difference, and we will explain the quote if you ask.
Asking for a quote
What to tell us when you ask for a quote:
- Where the job is, and your postcode
- The type of property
- Pictures of the joints, sent by email
- Access, such as stairs, a lift or height
If you’re in Otterbourne and need sand mastic, call 0345 464 0079 or drop us an email. Tell us what the problem is and where, and you’ll get a clear quote before work begins.
FAQs for Otterbourne
Is Otterbourne within the area you cover?
Yes, smaller places are covered as well as towns. We work across London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Can you do sand mastic in Otterbourne?
Yes. We work across London and the South East, and Otterbourne is part of that. You can phone 0345 464 0079 or drop us an email and tell us what needs doing, and we will give you a clear quote.
How long does the job take?
As a guide, most jobs take a few hours per window, depending on the condition of the joints. Larger jobs naturally take longer.
When will the new mastic be hard?
The surface skins quite quickly, then hardens over a longer period. The weather and joint depth both affect it.
Which products do you use?
Each joint gets the product that suits it. Where it moves, gets wet or faces the weather makes a difference, and we will tell you what we’re using.
Do the sealants smell?
It depends on the product. Some smell for a while, some hardly at all, and any smell fades as they cure.
Should I use sand mastic or silicone?
Sand mastic generally suits period timber windows best. On modern frames, we’d normally use a flexible sealant, and we’ll explain why.
Can I paint the new mastic?
Sand mastic is normally left unpainted, which is what traditional guidance recommends. Talk to us before any painting near it.