Hampshire · England
Sand mastic for sash & case windows in Wherwell Wood, Hampshire
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for homeowners, landlords and businesses in Wherwell Wood. Fully insured, ARBOMaster approved and guaranteed for a year.
- Mastic that needs renewing before redecorating
- Mastic worn away on windows facing the weather
- Old sand mastic that has cracked, crumbled or fallen out
The process
Once we are on site, we check the joints match what you told us. If anything is different, we explain it before carrying on. After that, the work takes a few hours per window, depending on the condition of the joints. Somewhere as small as Wherwell Wood, 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.
- The mastic is finished to sit tidily against the stone or brick.
Getting ready for the visit
- Tell us about access, such as stairs, a lift or high-level joints
- Try not to wet indoor joints just before the visit
- Plan for the work area to be out of bounds to pets and children
How to get a quote
If you’re in Wherwell Wood and need sand mastic, phone 0345 464 0079 or email us. A short description of the job and where it is helps us quote, and you will get a clear quote before any work starts.
Advice
Sand mastic for homes and businesses in Wherwell Wood
Burnt sand mastic is a traditional material that sits naturally against stone and brick. It suits period and listed homes where a modern sealant bead would stand out. Typical jobs include gaps round a timber door in stone or brick and crumbling sand mastic round a window, on stone surrounds, sash and case windows and timber door frames.
In a village or hamlet like Wherwell Wood, 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.
All our work comes with a one-year guarantee, wherever you are in Hampshire.
- Where
- Wherwell Wood (SP11)
- Wider area
- Hampshire
- Guarantee
- 12 months on all our work
- Quotes
- A clear price before work begins
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Signs you need sand mastic in Wherwell Wood
Water gets into small cracks in the mastic and pushes it out. Exposed elevations usually fail first.
The most common problems we see are:
- Mastic worn away on windows facing the weather
- Silicone on a period window that looks wrong
- Gaps round a timber door in stone or brick
- Mastic dropping out of the joint
Schools such as Wherwell Primary School are buildings too, and larger buildings have plenty of frames, and the mastic around each one ages.
What your quote should include
- Whether you can choose the colour
- What product goes in the joint
- Whether they’re fully insured
- How much experience the applicator has
Places near Wherwell Wood
Also in Wherwell Wood
Looking after it afterwards
Good habits help new joints last longer. Our tips:
- Do not run silicone over sand mastic
- Make sure water runs off the sill
- Check the mastic when you check the paintwork
- Have rotten timber repaired before new mastic goes in
Keep paint scrapers and sanders off the mastic when redecorating. It can be damaged by heavy scraping.
Gaps round a sash box let in draughts and rain. The longer it’s left, the more the joint opens as more mastic falls out.
Surface by surface
Sash and case windows
Sash windows are where we do most sand mastic work. We renew the mastic round each box.
Stone surrounds
Old stone surrounds are often uneven, so the joint varies in width. Sand mastic is shaped by hand to suit.
DIY sealant or a professional job?
Sealing over old silicone is the commonest DIY error. New silicone will not bond to old, so it lifts and traps water and mould underneath. Everything old must be removed first.
If you’ve already had a go yourself, that is fine. We remove it and do the joint properly, so tell us about it when you ask for a quote.
Your questions about sand mastic in Wherwell Wood
Do you work for landlords with property near Andover station?
Yes, rental work is part of what we do. Just phone 0345 464 0079 or email us and tell us about the property, and we will give you a clear quote.
Is Wherwell Wood within the area you cover?
Yes. Wherwell Wood is within the area we cover, which takes in towns, villages and rural addresses. We work across London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Where do you work from?
We work from Crawley. We cover Wherwell Wood and the rest of Hampshire.
Can I add another job to the visit?
Yes. Just list everything you need and we will quote it together.
Do you hold any approvals?
Yes. ARBOMaster is the approved applicator scheme for Arbo sealants, and we are part of it.
Is it messy?
Very little: the area around the joints is protected first, and we tidy up before we go.
Can you match the sealant colour?
Most of the time, yes. We will explain which colours are available and agree one before work begins.
Will the old sealant be removed?
Yes, always, and completely. New silicone doesn’t stick to old silicone, so the joint is cleaned back first.
Windows and doors in Wherwell Wood
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.
For an older house near a landmark such as Church of St Peter, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall. If you let a flat or house near Andover station, older sash windows in a rental need their mastic kept sound to keep the weather out.
Wherwell Wood is about 3 miles south-east of Andover, in Hampshire. Jobs in Wherwell Wood get the same care as everywhere else we work: old sealant removed completely, careful preparation and a 12-month guarantee. Wherwell Wood is one of 683 places in Hampshire where we work. Our Southampton page covers work nearby, about 18 miles away.
All of SP11 is within our area for sand mastic. We also cover the places around Wherwell Wood: Wherwell (1 mile south-east), Goodworth Clatford (1 mile west), Cottonworth (1 mile south), Fullerton (2 miles south) and Chilbolton (2 miles south-east). Within a short drive, we also cover Winchester (10 miles south-east), Eastleigh (15 miles south), Andover (3 miles north-west), Chandler's Ford (13 miles south), Romsey (13 miles south) and Hyde (10 miles south-east).
Local landmarks in Wherwell Wood
Around Wherwell Wood, our work takes us to homes and buildings near White Lion Public House and Winton Community Academy. The nearest railway station is Andover station, about 2.9 miles north-west. A little further out are Andover War Memorial Hospital (3.2 miles north-west) and Andover Museum (2.6 miles north). Green spaces nearby include Mill Lake and Anton Lakes.
How we quote for sand mastic
For a quick quote, just ask. What matters most is:
- The product the joint needs
- Access and height
- How much old sealant there is and how hard it is to remove
- Whether there’s mould to deal with
Homes and businesses are quoted the same way: the amount of work, how we reach it and what it needs, plus any working-time requirements on site. Ask us for a quote and we will go through it with you.
Asking for a quote
There’s no need for technical detail. Just tell us:
- Roughly how big the job is
- The problem you’ve noticed
- Photos by email, if that is easy
- If someone has resealed it before
It all starts with a short chat. Describe the problem, the location and the size of the job, and we’ll talk you through what we’d do. Whenever you’re ready, call 0345 464 0079 or drop us an email.
Leave it or put it right?
Not every draught comes from the sashes themselves. Open mastic joints round the box can let air in and new mastic seals them. In a small place like Wherwell Wood, homes can be exposed to wind and rain, which finds any gap, and older walls, once damp, take a long time to dry.
Instead of a standard rate, we look at what your job involves: the amount of work, the old material and the access. The price is agreed before we begin.
What you get with us
- More than 20 years in sealant work
- One-year guarantee on every job
- 180+ five-star Google reviews
- Anti-fungal silicone where joints get wet
Read how sealant jobs are priced and our reviews.