West Sussex · England
Sand Mastic in Hassocks
Sand mastic across Hassocks and nearby, with old sealant always removed completely and a 12-month guarantee.
- Crumbling sand mastic round a window
- Window mastic to renew ahead of painting
- Gaps round a timber door in stone or brick
What affects the quote in Hassocks
Call for a quick quote. The main things that affect it are:
- The number and length of the joints
- Any working-time requirements on site
- The old material and how stubborn it is
- Any mould that needs treating
What you pay reflects the work, not guesswork. That’s why we ask about the job first and send you a clear quote before any work starts.
Helping us quote
When you contact us, it’s useful to know:
- Roughly how big the job is
- Where the job is, and your postcode
- Access, such as stairs, a lift or height
- The problem you’ve noticed
For a quote, call 0345 464 0079 or send us an email and tell us where the job is and what the problem looks like. We will send you a clear quote before any work starts.
Sand mastic in Hassocks, done properly
If your home is listed or in a conservation area, check with your local planning authority if consent is needed before window work. Sand mastic is often favoured as a like-for-like material. Typical jobs include mastic worn away on windows facing the weather and gaps round a timber door in stone or brick, on stone surrounds, period & listed homes and brick reveals.
Houses in smaller places like Hassocks can stand more in the open than those in a built-up town, so exposed windows and doors face the weather head on. The mastic around frames on those walls tends to age faster.
A 12-month guarantee comes with the work, just as it does everywhere we cover.
- Location
- Hassocks (BN6)
- Wider area
- West Sussex
- Cover
- 12 months on all our work
- Quotes
- A clear price before any work starts
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
What we can’t put right
Before you book, it’s worth knowing the limits:
- Damaged stone surrounds
- Whether work needs listed building consent
- Sashes that rattle, stick or won’t open
If in doubt, ring 0345 464 0079 or drop us an email and we’ll say what we think before booking.
Surfaces we seal
- Timber door frames
- Stone surrounds
- Tenement windows
- Sash and case windows
- Period & listed homes
- Brick reveals
Hassocks homes and the weather
Rainfall in the South East is lower than in much of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
Rented homes near Hassocks station change hands often, and cracked sand mastic around sash windows lets in the draughts tenants complain about. Managing a site like Hassocks Infant School? Then its window and door frames need their mastic kept sound, just like a home’s. For an older house near a landmark such as St Francis of Assisi, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
Hassocks is about 2 miles south of Burgess Hill, in West Sussex. Homes, rented property, offices and hotels in Hassocks is covered for sand mastic, old or new, large or small. The work is guaranteed for a year. We cover 371 towns and villages across West Sussex, large and small. We also work in Brighton, around 7 miles away.
We cover every part of the BN6 postcode area for sand mastic and the streets around it. If you need sand mastic at a property on London Road, Semley Road and Farm Close or a nearby road, we can help. Other places close to Hassocks include Keymer (1 mile east), Hurst Wickham (1 mile north-west), Clayton (1 mile south), Hurstpierpoint (1 mile north-west) and Ditchling (1 mile east). Within a short drive, we also cover Crawley (13 miles north), Horsham (12 miles north-west), Worthing (13 miles south-west), Haywards Heath (5 miles north-east), East Grinstead (15 miles north-east) and Shoreham-by-Sea (8 miles south-west).
Local landmarks in Hassocks
We work in homes and buildings around Downlands Community School and The Hassocks pub. There’s a railway station in Hassocks itself: Hassocks station. Other landmarks nearby include The Budding Foundation Museum of Gardening (under half a mile south-west) and Clayton Castle (1.2 miles south). The countryside around Hassocks includes Bedelands Farm Nature Reserve and Wolstonbury Hill.
How the visit works
You don’t need to clear the whole room or building before we come, only the area right around the joints. We protect the rest, and the job takes a few hours for a single window, longer for several in most cases. Parking around Hassocks is generally easier than in a town centre, but mention any lanes, gates or long drives. For outside work, side access and the height of the joints help us plan.
- 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.
- The sand mastic is mixed and pressed into the joint by hand.
- The surface is finished to suit the stone or brick.
Before we arrive
- Where the joints are inside, avoid wetting them before we arrive
- Tell us about any previous sealing or DIY attempts
- Clear the area around the work
Ask for a quote
For a quick quote, get us on the phone, or email us if that’s easier. Tell us about the joints that need doing and we will talk you through the work before giving you a price.
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FAQs for Hassocks
Can you do sand mastic in Hassocks?
Yes. We work across London and the South East, and Hassocks is part of that. Just phone 0345 464 0079 or drop us an email with a few details of the job.
Is Hassocks within the area you cover?
Yes, we do. We work across London and the South East, and smaller places are part of that. The journey is planned ahead, so it helps to know about access.
Can landlords and businesses book you?
Yes, we do. Domestic, commercial and hotel work are all part of what we do, and we’re fully insured.
Do you do commercial work?
Yes. Larger jobs can be planned room by room or area by area to suit the site.
When will the new mastic be hard?
Not right away. The skin forms first, and the full set comes later and we’ll give you an idea for your job.
How long does sand mastic take?
Typically it takes a few hours for a single window, longer for several. Larger jobs naturally take longer.
What do you need from me for a quote?
Just the basics: where it is, what you’ve noticed and how we reach it. After that, simply call 0345 464 0079 or send us an email.
Can I add another job to the visit?
Yes. More than one area can go on one quote.
Keeping the joints in good condition
So the new joints stay in good condition:
- Inspect the joints round the windows every year or so
- Clear gutters so water doesn’t pour onto the windows
- Get any rot dealt with first
- Go gently near the mastic when preparing windows
Avoid painting over the new mastic, which is the traditional advice. If you are redecorating, ask us first.
Sound mastic protects the frame. Failed mastic lets water reach the timber and timber that stays wet can rot.
For landlords and businesses
Water getting past a failed joint can damage the building, which matters even more when someone else lives there. Resealing at the right time is simple maintenance.
We also work for property managers and facilities teams. We can quote a run of properties together.
Why deal with it now?
Filling over old, loose mastic doesn’t last. Raking out and preparing the joint gives it a sound base so the new work lasts. Homes in smaller places like Hassocks can face more weather, and failed outside joints let damp into walls. Inside, a split seal lets water into floors and panels just as it would anywhere.
Doing several joints on one visit generally makes better use of the time than several visits. We will send you a clear quote for the lot.
Why book with us
- 4.9 on Google from 180+ five-star reviews
- Trusted Arbo and Everbuild sealants
- We leave the area clean and tidy
- Sanitary silicone with an anti-fungal additive in wet areas
Take a look at our cost guide and customer reviews.
DIY sealant or a professional job?
The biggest DIY mistake is sealing over old sealant. New silicone won’t bond to old, so it peels away and traps moisture behind it. All the old material has to come out first.
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.