West Sussex · England
Sand mastic for sash & case windows in Hardham, West Sussex
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for Hardham, backed by a 12-month guarantee. Ask us for a quote.
- Old cement repairs round a window that have failed
- Old sand mastic that has cracked, crumbled or fallen out
- Gaps round a timber door in stone or brick
What affects the quote in Hardham
We quote each job individually. This is what makes a difference:
- How easy the joints are to reach
- Mould in or behind the old joints
- Whether old sealant or filler has to be cut out
- The number of rooms or windows
Combining jobs into one visit is generally more efficient than separate visits, so it’s worth mentioning everything you’d like done. We’ll give you a clear price for the lot.
Asking for a quote
A few details help us give you an accurate quote. When you ask for a quote, tell us:
- The address or postcode of the job
- How we’d reach the joints
- If someone has resealed it before
- The problem you’ve noticed
Call for a quick quote, or send an email if you’d rather. Describe what needs sealing and we’ll explain what’s involved and give you a clear price.
Sand mastic for homes and businesses in Hardham
Silicone on a period window often looks wrong and does not suit the building. Sand mastic is the traditional choice, and we can replace one with the other. If you have gaps round a timber door in stone or brick and a silicone bead on a sash window that spoils the look, we can put it right, on sash and case windows, stone surrounds and timber door frames alike.
Homes in small places like Hardham 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
- Hardham (RH20)
- Region
- West Sussex
- Guarantee
- One year on every job
- Price
- Quoted before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Different surfaces, different methods
Stone surrounds
Stone surrounds suit sand mastic well. The finish blends with the masonry.
Tenement and terrace windows
In shared buildings, the windows may be part of a wider repair so it’s worth checking responsibilities.
Keeping the joints in good condition
A little care helps the new joints last. We recommend:
- Take care around the mastic when scraping paint
- Sort the mastic before the decorators arrive
- Clear gutters so water does not pour onto the windows
- Avoid patching sand mastic with silicone
Keep paint scrapers and sanders off the mastic when redecorating. It can be damaged by heavy scraping.
Sound mastic protects the frame. Failed mastic lets water reach the timber and timber that stays wet can rot.
Why deal with it now?
Filling over old, loose mastic does not last. We remove the loose material first so the new work lasts. Older cottages and farmhouses around Hardham can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
We don’t show prices on the website, because the cost depends so much on the job itself. For a quick quote, please phone 0345 464 0079 or drop us an email.
What you get with us
- Tidy, careful work
- Anti-fungal sanitary silicone in wet areas
- Arbo and Everbuild products
- 180+ five-star Google reviews
Read what affects the cost or our reviews.
Landlords, agents and businesses in Hardham
Whether it’s one flat or a portfolio, the work is the same standard: old sealant fully removed, joints prepared properly and a one-year guarantee.
We regularly work with letting and managing agents. Send the address, what’s needed and the access arrangements.
What else we do in Hardham
Hardham: your questions answered
Do you work for landlords with property near Pulborough station?
Yes. We work for landlords and letting agents as well as householders, and several properties can be quoted together. Just phone 0345 464 0079 or drop us an email with the address and what needs doing, and we will give you a clear price.
Do you cover smaller places like Hardham?
Yes, Hardham is covered. Our work covers London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
Are you an approved applicator?
Yes. We are approved under the ARBOMaster scheme.
Will there be a smell?
Some sealants have a smell while they cure, but it fades. Opening a window helps.
Can you do several jobs on one visit?
Of course. Combining jobs makes good use of the visit, so mention them when you ask for a quote.
What sealant do you use?
Quality sealants from brands including Arbo and Everbuild, picked for each joint. We will tell you what we’re using and why.
Do you take out the old sealant first?
Yes. Sealing over old sealant is the main reason resealing fails early, so we never do it.
Is it possible to paint over sand mastic?
Traditional guidance is not to paint over sand mastic. Ask us before you decorate around it and we’ll talk you through it.
What sealant work can’t fix
A few problems are outside what sealant work can do:
- Decisions on consent for listed homes
- Sashes that need overhauling
- Rotten sashes, sills or window boxes (a joiner’s job)
Not sure which it is? You can ring 0345 464 0079 or email us and we’ll tell you honestly.
What we seal
- Stone surrounds
- Timber door frames
- Sash and case windows
- Brick reveals
- Period & listed homes
- Tenement windows
What happens on the day
Before we leave, we go over the finished joints with you and explain the cure time. The work normally takes a few hours for a single window, longer for several, depending on how much there is to do. In a small place like Hardham, access is normally the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We look at the surrounds with you and agree the joints to renew.
- Old mastic and any loose material are raked out.
- We pack any deep voids first.
- We apply the mastic by hand and shape it.
- The surface is finished to suit the stone or brick.
How to prepare
- Let us know about stairs, lifts or work at height
- Mention if the joints have been sealed before
- Mention any leaks or damp you’ve noticed
How to get a quote
We do not publish a price list, because every job is different. Instead, we send you a clear quote for your job. To get started, ring 0345 464 0079 or send us an email.
Related advice
Sand mastic in Hardham: local notes
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. Historic houses like Old Place Manor (about 1 mile north-east) are a reminder that the area around Hardham has older buildings as well as new. Where a home is older, older timber frames in brick or stone need a different approach from a modern uPVC window.
For site and facilities teams at buildings such as St James' CofE Primary School, larger buildings have plenty of frames, and the mastic around each one ages. For landlords with property near Pulborough station, cracked sand mastic around sash windows lets in the draughts tenants complain about. Homes close to St Botolph's Church include some older properties, and the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
Hardham is about 10 miles north of Littlehampton, in West Sussex. Homes, rented property, offices and hotels in Hardham is covered for sand mastic. Every job comes with our 12-month guarantee. Hardham is one of 371 towns and villages in West Sussex where we work. We also work in Crawley, around 18 miles away.
Jobs for sand mastic in RH20 works the same way as everywhere else we cover. We also cover the places around Hardham: Coldwaltham (1 mile south-west), Pulborough (1 mile north-east), Watersfield (2 miles south-west), Fittleworth (2 miles north-west) and Lower Horncroft (2 miles west). Larger places within reach include Horsham (12 miles north-east), Worthing (10 miles south-east), Bognor Regis (13 miles south-west), Chichester (13 miles south-west), Littlehampton (10 miles south) and Shoreham-by-Sea (14 miles south-east).
What’s near Hardham
We work in homes and buildings around The White Hart Public House and the streets around them. The closest station to Hardham is Pulborough station, about 0.7 miles north-east. Other landmarks nearby include Amberley Museum (3.6 miles south) and Coates Castle (2.8 miles west). The countryside around Hardham includes Bignor Hill and Amberley Wildbrooks RSPB Reserve.