Hampshire · England
Sand mastic for sash & case windows in Trotton, Hampshire
Sand mastic in Trotton from a team with over 20 years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Failed mastic on an exposed elevation
- Mastic that needs renewing before redecorating
- Old sand mastic that has cracked, crumbled or fallen out
DIY versus a professional finish
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: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it doesn’t work out, we can still put it right.
Sand mastic for homes and businesses in Trotton
A silicone bead around a sash window can look out of place and isn’t always the right material. Sand mastic is the traditional choice and we can swap the silicone for it. We work on timber door frames, tenement windows and sash and case windows, and common reasons people get in touch are patchy fillers round a sash window and draughts and rain around sash boxes.
Mastic can only go onto a dry, clean joint, so window work in Trotton is booked around the forecast. Tell us about access to every side of the house, including upper-floor windows.
All our work is covered by a one-year guarantee, wherever you are in Hampshire.
- Location
- Trotton (GU31)
- Region
- Hampshire
- Guarantee
- One year on every job
- Quote
- A clear quote up front
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Common problems we fix in Trotton
Over the years, sand mastic weathers. It dries out, cracks and loses its grip on the stone or timber.
These are the problems we are asked about most:
- Draughty sash windows at the surround
- Window mastic to renew ahead of painting
- Mastic worn away on windows facing the weather
- Mastic round period door frames that has failed
For site and facilities teams at buildings such as Stedham Primary School, the mastic around its windows and doors needs looking after like any other building’s.
What your quote should include
- Whether they’re fully insured
- What the quote includes, VAT included or not
- Whether the sealant suits the joint
- Which colour the sealant will be
Looking after it afterwards
After the cure time, these simple habits help:
- Find out about consent before window work on a listed home
- Renew mastic before redecorating the windows
- Leave the new mastic unpainted
- Clear gutters so water doesn’t pour onto the windows
Leave the new mastic unpainted, which is the traditional advice. Ask us before any decorating around it.
Small cracks are a sign the mastic is ageing. Renewing it then is simpler than waiting until it falls out.
Quotes for sand mastic in Trotton
We quote each job individually. These are the things that affect it:
- Access and height
- The type of sealant required
- How many rooms, windows or areas are involved
- Any mould that needs treating
Doing several joints on one visit is normally more efficient than separate visits. We will give you a clear price for the lot.
What we need to know
There’s no need for technical detail. Just tell us:
- How many joints, rooms or windows are involved
- If someone has resealed it before
- Where the job is, and your postcode
- Whether it’s a home or a business
Quotes start with a quick conversation. Describe the problem, the location and the size of the job, and we’ll talk you through what we’d do. When it suits you, phone 0345 464 0079 or send us an email.
The process
When we get to you, we compare the joints with what we discussed. If anything is different, we explain it before carrying on. After that, the work takes anything from a few hours to a full day, depending on how many windows. In a small place like Trotton, access is normally the main thing to plan. 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 if parking is tricky
- Clear items away from the joints we’re working on
- Mention any tricky access
Ask for a quote
For a quick quote, get us on the phone, or send an email if you’d rather. Describe what needs sealing and we’ll talk you through the work and give you a clear quote.
Related advice
Work for landlords, hotels and businesses
Failed sealant is one of the commonest items on a check-out report, and it’s quick to put right between tenancies. We can quote for more than one property at once.
Water getting past a failed joint can damage the building, which is a bigger problem in a rented property. Keeping joints in good order is simple maintenance that we can handle for you.
What we can’t put right
We won’t take on work that won’t last, so here’s what sealant can’t put right:
- Sashes that need overhauling
- Rotten sashes, sills or window boxes (a joiner’s job)
- Cracked or broken glass
If in doubt, phone 0345 464 0079 or drop us an email and we’ll say what we think.
Joints and surfaces we work on
- Timber door frames
- Tenement windows
- Period & listed homes
- Stone surrounds
- Sash and case windows
- Brick reveals
Towns and villages near Trotton
Other services in Trotton
Sand mastic in Trotton: local notes
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. Historic houses like Cowdray House (about 3.2 miles east) are a reminder that the area around Trotton has older buildings as well as new. Where a home is older, older frames set in brick or stone need a sealant that suits them, and sometimes that’s traditional sand mastic.
For an older house near a landmark such as St George's Church, the joint between an old wall and a newer frame is normally the first place rain gets in.
Trotton is about 6 miles east of Petersfield, in Hampshire. We provide sand mastic to homeowners, landlords and businesses in Trotton. Our area takes in 683 places across Hampshire. Our Portsmouth page covers work nearby, about 18 miles away.
We work across GU31 for sand mastic and the streets around it. Nearby, we also carry out sand mastic in Dumpford (1 mile south-west), Elsted Marsh (1 mile south), Ingrams Green (1 mile south), Elsted (2 miles south-west) and Didling (2 miles south). Larger places within reach include Havant (12 miles south-west), Horndean (11 miles south-west), Alton (13 miles north-west), Waterlooville (13 miles south-west), Petersfield (6 miles west) and Purbrook (13 miles south-west).
Landmarks near Trotton
Around Trotton, our work takes us to homes and buildings near The Keeper's Arms Public House and the streets around them. Other landmarks nearby include Midhurst Community Hospital (3 miles east) and Midhurst Museum (2.9 miles east). Green spaces nearby include Iping and Stedham Commons and Wheeler's Down.
Your questions about sand mastic in Trotton
Do you cover Trotton for sand mastic?
Yes, Trotton is within the area we cover. Our work covers London and the South East. Just phone 0345 464 0079 or email us with a few details of the job, and we’ll send you a clear quote.
Do you cover smaller places like Trotton?
Yes, smaller places are covered as well as towns. Our work covers 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?
Mr Mastic is based in Crawley. Our applicators cover Trotton.
What exactly is sand mastic?
Sand mastic is a traditional material for pointing round windows and doors. It combines sand with a linseed-oil-based binder.
How long does sand mastic take to go off?
It skins over fairly quickly but takes longer to harden fully. We will tell you what to expect for your job.
Do the sealants smell?
Some sealants have a smell while they cure, which fades as it sets. Opening a window helps.
What does sand mastic cost?
Size, access and the old material all affect the cost. Call for a quick quote and we will talk you through it.
Can tenants book the work?
We’re happy to deal with the tenant, landlord or agent. Just make sure your landlord agrees.