West Sussex · England
Jacob's Post Sand Mastic
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for Jacob's Post, backed by a one-year guarantee. Ask us for a quote.
- Window mastic to renew ahead of painting
- Mastic worn away on windows facing the weather
- Cracked mastic round a front door frame
Sand mastic for homes and businesses in Jacob's Post
We work across Jacob's Post renewing sand mastic on sash windows and doors. Each joint is raked out, prepared and pointed by hand, finished to suit the masonry. We work on brick reveals, sash and case windows and stone surrounds, and people most often call us about cement or filler used on old window joints that has cracked and gaps between timber frames and stone or brick.
Around Jacob's Post, many homes face open ground, so their windows and doors take the full weather. Exposed frames and sills lose their mastic sooner than sheltered ones.
A one-year guarantee comes as standard.
- Location
- Jacob's Post (RH15)
- Wider area
- West Sussex
- Guarantee
- 12 months on all our work
- Quotes
- A clear quote up front
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
What we’re called out for in Jacob's Post
Previous repairs in cement or silicone often trap water or crack away. They do not suit the joint, and they usually need raking out.
It’s worth asking for a quote if you see:
- Wind and rain getting in round a sash window
- Patchy fillers round a sash window
- Gaps where the frame meets the masonry
- Weathered mastic on the most exposed windows
Letting a property close to Burgess Hill station? Then cracked sand mastic around sash windows lets in the draughts tenants complain about.
Comparing quotes
- Is VAT in the price?
- What preparation is included
- How long the guarantee is
- What product goes in the joint
Looking after it afterwards
Once the sealant has cured, a few habits help it last:
- Check with your local planning authority if your home is listed
- Have rotten timber repaired before new mastic goes in
- Ask us before painting near the mastic
- Check the mastic when you check the paintwork
Check the mastic when you check the paintwork. Small cracks are easier to deal with early.
Sound mastic protects the frame. Failed mastic lets water reach the timber, which can lead to rot.
Towns and villages near Jacob's Post
Other services in Jacob's Post
What affects the cost of sand mastic
We quote each job individually. These are the things that affect it:
- The number and length of the joints
- Access and height
- The product the joint needs
- How many rooms, windows or areas are involved
Some things make a job bigger or smaller: how much old sealant there is and how stubborn it is, whether mould needs treating, and whether the work is at height. Your quote takes all of that into account.
What we need to know
To help us quote quickly, please include:
- Roughly how big the job is
- Pictures of the joints, sent by email
- Whether it’s a home or a business
- What the problem is, such as mould, gaps, leaks or cracking
A good description makes for an accurate quote. Tell us where the job is, what’s wrong and how much there is.
Windows and doors in Jacob's Post
Historic houses like Ockenden Manor (about 3.2 miles north) are a reminder that the area around Jacob's Post has older buildings as well as new. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window. The South East is one of the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
Homes close to Providence Strict Baptist Chapel include some older properties, and the windows may be timber, sash or later replacements, and each needs the right sealant against the wall. Managing a site like The Gattons Infant School? Then the mastic around its windows and doors needs looking after like any other building’s.
Jacob's Post is about 1 mile west of Burgess Hill, in West Sussex. Homes, rented property, offices and hotels in Jacob's Post is covered for sand mastic. The work is guaranteed for a year. Across West Sussex, we cover 371 places, and Jacob's Post is one of them. There’s also a page for Brighton, about 9 miles away.
Work in RH15 is quoted and booked the same way as anywhere else. You’ll find streets such as Downs Road, London Road and Western Road, all of which we cover. Close by, we work in Burgess Hill (1 mile east), Abbotsford (1 mile north), World's End (1 mile east), Goddards Green (1 mile west) and Hurst Wickham (2 miles south-west). We also work in nearby towns such as Crawley (11 miles north), Horsham (11 miles north-west), Worthing (15 miles south-west), Haywards Heath (3 miles north-east), East Grinstead (13 miles north-east) and Shoreham-by-Sea (10 miles south-west).
Local landmarks in Jacob's Post
Typical jobs here are in homes near The Cricketers pub, St Paul's Catholic College and Oakmeeds Community College, among other places. For rail, the closest station is Burgess Hill station, roughly 0.7 miles south-east of the centre. Other landmarks nearby include Burgess Hill Museum (0.5 miles south-east) and The Dene Hospital (1.2 miles west). For a walk, there’s Bedelands Farm Nature Reserve and Wolstonbury Hill.
Jacob's Post questions
Do you work for landlords with property near Burgess Hill station?
Yes. We work for letting agents and landlords as well as householders. You can phone 0345 464 0079 or drop us an email with the details for a clear quote.
Is Jacob's Post 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.
Is sand mastic better than silicone for my windows?
We’ll talk it through with you. Sand mastic suits many period homes, and modern sealants suit newer frames.
Should I check with the council before work on a listed or conservation-area home?
Checking first is sensible. Ask your local planning authority whether consent is needed for listed or conservation-area properties.
Should I try DIY first?
For a simple, easy-to-reach joint, a careful DIYer can do a reasonable job. Most DIY failures come from sealing over old material, wet joints or too much sealant.
How long will you be here?
A typical job takes a few hours per window, depending on the condition of the joints, including preparation and clearing up. We’ll confirm how long when we quote.
Are you an approved applicator?
Yes. ARBOMaster is the approved applicator scheme for Arbo sealants, and we’re part of it.
Do you guarantee sand mastic work?
All our work has a one-year guarantee, and we’re fully insured.
DIY sealant or a professional job?
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and the joint depth matters as much as the finish.
A careful DIYer can reseal a simple joint, like a short, easy-to-reach joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
What happens on the day
Our applicators work methodically: protect, prepare, seal, tidy. For most jobs that takes a few hours for a single window, longer for several, and the area is left clean. Somewhere as small as Jacob's Post, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- First we agree which joints need doing.
- Old mastic and any loose material are raked out.
- Deep gaps are packed so the mastic sits at the right depth.
- We apply the mastic by hand and shape it.
- The surface is finished to suit the stone or brick.
Before we arrive
- Let us know about earlier repairs to the joints
- Tell us about access, such as stairs, a lift or high-level joints
- For indoor joints, keep the area dry beforehand if you can
Getting a quote
To get a quote, ring 0345 464 0079 or send us an email with the location and a short description of the problem. We will give you a clear price before any work starts.
Read more
Landlords, agents and businesses in Jacob's Post
We also work for property managers and facilities teams. We can quote a run of properties together, and we’re fully insured for the work.
Mouldy or split sealant often shows up at the end of a tenancy, and it’s easy to sort out between tenants. We can quote for more than one property at once.
Why deal with it now?
A silicone bead can be quicker, but on period stone or brick it often looks out of place. Sand mastic suits the building and finishes neatly against the masonry. Where a wall is exposed, as many are in small places like Jacob's Post, wind-driven rain gets into any failed joint, and damp in older walls is slow to dry out.
Doing several joints on one visit generally makes better use of the time than several visits. We’ll give you a clear price for the lot.
Why choose Mr Mastic in Jacob's Post
- Full insurance on every job
- Trusted Arbo and Everbuild sealants
- Tidy, careful work
- 20+ years of sealant experience
Read what affects the cost and what customers say.