Hampshire · England
East Harting Sand Mastic
Traditional burnt sand mastic around sash and case windows and doors in stone and brick in East Harting, with a one-year guarantee on every job. Ask us for a quote.
- Open joints round the window box
- Window mastic to renew ahead of painting
- Draughts and rain around sash boxes
About our sand mastic in East Harting
Fresh sand mastic forms a skin quite soon, but it takes longer to harden fully. Traditional guidance is not to paint over it, so ask us before you decorate. We are often asked to deal with crumbling sand mastic round a window and modern sealant on a period surround, across sash and case windows, period & listed homes and tenement windows.
Homes in small places like East Harting often stand in the open, with little to shelter their windows from wind and rain. That exposure dries out and cracks the mastic around frames and sills faster.
The work is guaranteed for twelve months. If there’s a problem with our work within the year, let us know and we’ll sort it.
- Place
- East Harting (GU31)
- Wider area
- Hampshire
- Cover
- A year, on every job
- Quote
- A clear quote up front
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
East Harting homes and the weather
Compared with the north and west, the South East gets less rain, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day. With historic houses such as Uppark (about 1.7 miles south-west) nearby, there’s older building stock in the area around East Harting as well as newer homes. In older buildings, older frames set in brick or stone need a sealant that suits them, and sometimes that’s traditional sand mastic.
If you let a flat or house near Petersfield station, any sash windows need sound mastic to keep draughts and rain out. In the older streets around The Parish Church of St Mary & St Gabriel, frames set in older brick or stone need a sealant that suits the wall as well as the frame.
East Harting is about 4 miles south-east of Petersfield, in Hampshire. Homes, rented property, offices and hotels in East Harting is covered for sand mastic. Every job comes with our one-year guarantee. Across Hampshire, we cover 683 places, and East Harting is one of them. For nearby work, see our Portsmouth page (15 miles or so).
Work in GU31 works the same way as everywhere else we cover. Local streets include Hollist Lane, East Harting Street and Orchard Close, all of which we cover. We also cover the places around East Harting: South Harting (1 mile west), Nyewood (1 mile north), Elsted (1 mile east), Elsted Marsh (2 miles east) and Dumpford (2 miles north-east). Further out, we also cover Havant (9 miles south-west), Horndean (8 miles south-west), Alton (13 miles north), Waterlooville (10 miles south-west), Petersfield (4 miles north-west) and Purbrook (10 miles south-west).
Near you in East Harting
In East Harting, that means homes and buildings near The Ship Inn. East Harting’s nearest station is Petersfield station, about 4.1 miles north-west. A little further out are Petersfield Community Hospital (4.1 miles north-west) and Bear Museum (3.7 miles north-west). The countryside around East Harting includes Iping and Stedham Commons and Oakham Hill.
FAQs for East Harting
Can you do sand mastic in East Harting?
Yes. Our work covers London and the South East, and East Harting is part of that. You can call 0345 464 0079 or send us an email and tell us what needs doing, and we will give you a clear price.
Can you help a landlord with a rental near Petersfield station?
Yes, rental work is part of what we do. You can phone 0345 464 0079 or send us an email with the address and a few details, and we will give you a fixed price before any work starts.
Do you guarantee sand mastic work?
Every job comes with our one-year guarantee.
Can you replace silicone on a period window with sand mastic?
Yes, it’s a common request. All the old silicone is removed first so the mastic beds in well.
Can I add another job to the visit?
Yes, we can. Several rooms, windows or areas can go on one quote.
Do I have to be there?
Access is agreed with you when the job is booked. For inside work, that normally means someone being in.
Do you offer different sealant colours?
Normally, yes. White, clear and grey are common, and other colours are available for many products, and we agree the colour with you before we start.
Will it make a mess?
Not at all. We work neatly, protect the area around the joints and tidy up afterwards.
When to call us in East Harting
Age is the main cause. Sand mastic is a maintenance item like any pointing and how long it lasts depends on the weather it faces.
These are the problems we are asked about most:
- Window mastic to renew ahead of painting
- Gaps where the frame meets the masonry
- A silicone bead on a sash window that spoils the look
- Old cement repairs round a window that have failed
If you look after a building such as Harting CofE Primary School, larger buildings have plenty of frames, and the mastic around each one ages.
Questions to ask before you book
- When the joint can take water or movement
- Who turns up on the day
- Whether the sealant suits the joint
- How long the guarantee is
DIY sealant or a professional job?
The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is, and the work is guaranteed for a year.
Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.
How the job changes by surface
Sash and case windows
Sash windows are where we do most sand mastic work. Each joint round the box is raked out and renewed.
Tenement and terrace windows
Tenements and terraces often have many sash windows with ageing mastic. We can do one window or several.
When it isn’t the sealant
Sealant is not the answer to every problem, and we will tell you before we start. Sealant won’t put right:
- Broken panes
- Damaged stone surrounds
- Sash cords, weights and draught-proofing of the sashes
If in doubt, call 0345 464 0079 or drop us an email and we’ll say what we think before you book.
Joints and surfaces we work on
- Stone surrounds
- Period & listed homes
- Timber door frames
- Sash and case windows
- Brick reveals
- Tenement windows
What we do, step by step
There’s no need to move everything out before we come, just the space around the work. We protect the rest, and the job takes a few hours per window, depending on the condition of the joints for a typical job. Somewhere as small as East Harting, 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.
- The joint is raked out and cleaned.
- We fill deep gaps so the new mastic isn’t too thick.
- New sand mastic is applied and shaped by hand.
- The finish is dressed neatly.
Getting ready for the visit
- Try not to wet indoor joints just before the visit
- Tell us about any water getting in
- Mention if the joints have been sealed before
Ask for a quote
It all starts with a short chat. Tell us what’s wrong, where it is and how much there is, and we will talk you through what we’d do. When it suits you, ring 0345 464 0079 or email us.
Advice
Quotes for sand mastic in East Harting
For a quick quote, just ask. The main things that affect it are:
- Working hours on commercial sites
- Whether there’s mould to deal with
- How many areas need sealing
- The product the joint needs
A failed joint rarely gets cheaper to fix by waiting, as water and mould keep getting in. If you’re unsure, phone 0345 464 0079 or email us and we’ll give you an honest view and a quote.
Helping us quote
When you call or email, these details help:
- The type of property
- How we’d reach the joints
- Pictures of the joints, sent by email
- Where the job is, and your postcode
If you’re in East Harting and need sand mastic, phone 0345 464 0079 or email us. Tell us what the problem is and where, and you will get a clear quote before work begins.
Nearby places to East Harting
Also in East Harting
Keeping the joints in good condition
How long the joints last depends on use and care. We suggest:
- Ask us before painting near the mastic
- Sort the mastic before the decorators arrive
- Clear gutters so water doesn’t pour onto the windows
- Keep modern sealant off the mastic
Look at the mastic when you look over the windows. Small cracks are easier to deal with early.
An open joint round the box lets weather through. The longer it’s left, the more the joint opens.