Hampshire · England
Sand mastic for sash & case windows in Mockbeggar, Hampshire
Traditional burnt sand mastic around sash and case windows and doors in stone and brick in Mockbeggar, with a one-year guarantee on every job. Ask us for a quote.
- Failed mastic on an exposed elevation
- Mastic that needs renewing before redecorating
- Cement or filler used on old window joints that has cracked
Why it’s worth doing now in Mockbeggar
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 Mockbeggar, wind-driven rain gets into any failed joint, and damp in older walls is slow to dry out.
Instead of a standard rate, we look at what your job involves: how many joints, what’s in them now and how we reach them. You’ll know the price before we begin.
Why Mockbeggar customers choose us
- Full insurance on every job
- Over 20 years’ experience
- ARBOMaster approved applicator
- Rated 4.9 stars on Google
Sand mastic in Mockbeggar
We renew sand mastic around sash windows and doors in stone and brick. Out comes the old, loose mastic, and new mastic is applied and shaped by hand. We’re often asked to deal with cracked mastic round a front door frame and wind and rain getting in round a sash window, across tenement windows, brick reveals and timber door frames.
Homes in small places like Mockbeggar often stand in the open, with little to shelter their windows from wind and rain. Exposed frames and sills lose their mastic sooner than sheltered ones.
We guarantee the work for a year. If there’s a problem with our work within the year, let us know and we will sort it.
- Where
- Mockbeggar (BH24)
- Region
- Hampshire
- Guarantee
- A year, on every job
- Quote
- A clear quote up front
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
What affects the cost of sand mastic
Call for a quick quote. What matters most is:
- Which sealant suits the joint
- The amount of work
- The number of rooms or windows
- Access and height
There are no prices on our website, because each job is priced on what it involves. Call for a quick quote and we’ll talk you through it.
Helping us quote
To help us quote quickly, please include:
- Whether it’s a home or a business
- Any access issues, like height or stairs
- The problem you’ve noticed
- A few photos by email, if you can
Asking for a quote is easy: let us know the job and the location, and roughly how big it is. A few pictures by email make the job easier to understand, and we will take it from there.
Keeping the joints in good condition
To keep the joints looking good and working properly:
- Avoid heavy scraping on the mastic joint
- Check with your local planning authority if your home is listed
- Don’t paint over the new mastic
- Plan mastic work ahead of painting
Keep paint scrapers and sanders off the mastic when redecorating. It can be damaged by heavy scraping.
Once mastic starts to crumble, rain gets in. It can soak into the frame and the surrounding masonry so early renewal protects both.
How it works
On the day, we look over the joints with you first. We protect the surfaces around the joints before any work starts. Most jobs take anything from a few hours to a full day, depending on how many windows. Somewhere as small as Mockbeggar, 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.
- Deep voids are packed so the mastic is the right thickness.
- Sand mastic is mixed and applied by hand, then shaped to the joint.
- The mastic is finished to sit tidily against the stone or brick.
Getting ready for the visit
- Tell us about any previous sealing or DIY attempts
- Mention any sign-in or site rules at work premises
- Mention any tricky access
How to get a quote
If you’re in Mockbeggar and need sand mastic, ring 0345 464 0079 or drop us an email. Tell us what the problem is and where, and we’ll agree the price before any work begins.
Related advice
Mockbeggar homes and the weather
The South East is one of the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
In the older streets around Church of St Martins, the joint between an old wall and a newer frame is usually the first place rain gets in.
Mockbeggar is in Hampshire. Anywhere in BH24, we cover sand mastic for homes and businesses. Mockbeggar is one of 683 towns and villages in Hampshire where we work. Our Southampton page covers work nearby (17 miles or so).
Every address in BH24 is within our area for sand mastic. Local streets include Gorley Road and New Road, all of which we cover. Other places close to Mockbeggar include South Gorley (1 mile north), Ibsley (1 mile west), Rockford (1 mile south), Harbridge (1 mile west) and Ellingham (1 mile south-west). Larger places within reach include Totton (12 miles east), Lymington (13 miles south-east), Romsey (15 miles north-east), New Milton (10 miles south-east), Ringwood (3 miles south) and Barton on Sea (11 miles south-east).
Around Mockbeggar
We work in homes and buildings around The Old Beams Inn, among other places. Well-known places in the area include Godshill Castle Hill (3.9 miles north) and Fordingbridge Doll Museum (2.8 miles north). Green spaces nearby include Linbrook Lake and Blashford Lakes.
FAQs for Mockbeggar
Will you come out to Mockbeggar?
Yes. Mockbeggar is within the area we cover, which takes in towns, villages and rural addresses. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.
Is Mockbeggar in your area for sand mastic?
Yes, Mockbeggar is within the area we cover. We work across London and the South East. Just call 0345 464 0079 or email us with a few details of the job.
Which is right for my windows, sand mastic or modern sealant?
We will help you decide. Sand mastic suits many period homes, and modern sealants suit newer frames.
Do you hold any approvals?
Yes. We’re approved under the ARBOMaster scheme, the approved applicator scheme for Arbo sealants.
Where do you work from?
Our base is in Crawley, and we cover South East England, London and all of Scotland.
Will it make a mess?
No. We protect the surfaces around the joints, and we tidy up before we go.
Can new sealant go over the old?
No. Fresh sealant doesn’t stick to old sealant, and it traps any mould or water underneath. We remove it all first.
Is it possible to take out silicone and use sand mastic instead?
In most cases. The silicone is cut out and the joint cleaned, then point it with sand mastic.
Also in Mockbeggar
What sealant work can’t fix
We will always be straight with you, so here’s what new sealant won’t do:
- Crumbling stone or brickwork round the window
- Sashes that need overhauling
- Planning or listed building consent (your local planning authority decides)
Not sure which it is? You can phone 0345 464 0079 or drop us an email and we’ll tell you honestly before booking.
Joints and surfaces we work on
- Tenement windows
- Brick reveals
- Period & listed homes
- Sash and case windows
- Timber door frames
- Stone surrounds
When to call us in Mockbeggar
Shallow joints are a common cause. A thin layer doesn’t hold well, which is why we pack deep voids first and get the depth right.
If you can see any of these, it’s time to have the joints looked at:
- Old sand mastic that has cracked, crumbled or fallen out
- Failed mastic on an exposed elevation
- Silicone on a period window that looks wrong
- Patchy fillers round a sash window
In and around Mockbeggar, as anywhere, good sand mastic starts with a clean, dry, properly prepared joint.
What to look for in a quote
- The length of the guarantee
- Whether they seal over old material or remove it
- Whether VAT is included
- How long to leave it before use
Should I try it myself first?
Some sealant jobs are within reach of a careful DIYer, like a short, easy-to-reach joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
If you are set on DIY, put the effort into preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it doesn’t work out, we can still put it right.