West Sussex · England
Thakeham Sand Mastic
Traditional burnt sand mastic around sash and case windows and doors in stone and brick in Thakeham, with a one-year guarantee on every job. Call for a quick quote.
- Modern sealant on a period surround
- Gaps round a timber door in stone or brick
- Old sand mastic that has cracked, crumbled or fallen out
Sand mastic for homes and businesses in Thakeham
Our applicators renew the sand mastic around sash and case windows and doors set in stone or brick. Out comes the old, loose mastic, and new mastic is applied and shaped by hand. We’re often asked to deal with mastic that needs renewing before redecorating and mastic dropping out of the joint, across sash and case windows, brick reveals and tenement windows.
Homes in small places like Thakeham 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.
Our work is backed for twelve months, in Thakeham and everywhere else we cover.
- Where
- Thakeham (RH20)
- Wider area
- West Sussex
- Cover
- A year, on every job
- Quote
- A clear price before we start
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
What we are called out for in Thakeham
Most of it is simply age. Sand mastic is a maintenance item like any pointing, depending on exposure and upkeep.
Signs it’s time to call us include:
- Failed mastic on an exposed elevation
- Window mastic to renew ahead of painting
- Old sand mastic that has cracked, crumbled or fallen out
- Cracked mastic round a front door frame
In the older streets around The Parish Church of St Mary, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
What to look for in a quote
- Is VAT in the price?
- What insurance they hold
- What product goes in the joint
- What happens if the job turns out different
What sand mastic looks like in Thakeham
With historic houses such as Parham House (about 3.6 miles south-west) nearby, there’s older building stock in the area around Thakeham as well as newer homes. 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, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
Letting a property close to Pulborough station? Then any sash windows need sound mastic to keep draughts and rain out. For site and facilities teams at buildings such as Rydon Community College, larger buildings have plenty of frames, and the mastic around each one ages.
Thakeham is about 8 miles north of Worthing, in West Sussex. Anywhere in RH20, our applicators can take on sand mastic. 371 places in West Sussex are on our list, from the larger towns to small villages. For nearby work, see our Crawley page.
Postcode districts we cover here for sand mastic: RH20. Whether your property is on The Street, Bramble Lane and Cray's Lane or a nearby road, we can help. Neighbouring places we cover for sand mastic include Abingworth (1 mile south-west), Warminghurst (1 mile south-east), Goose Green (1 mile north-east), West Chiltington (1 mile north-west) and Heath Common (1 mile south). Further out, we also cover Crawley (15 miles north-east), Horsham (9 miles north-east), Worthing (8 miles south), Haywards Heath (15 miles east), Burgess Hill (13 miles east) and Littlehampton (10 miles south-west).
Around Thakeham
For rail, the closest station is Pulborough station, about 4.1 miles west of the centre. A little further out are The Storrington And District Museum (2.2 miles south-west). For a walk, there’s Knepp Wildland and Chanctonbury Hill.
What we do, step by step
We bring everything the job needs with us, so you do not need to buy or prepare anything. Once we’ve agreed what’s being done, we protect the area and start. Most jobs take a few hours per window, depending on the condition of the joints. For a village or hamlet like Thakeham, the journey is planned in advance: let us know about lanes, gates and parking. Everything for the job comes with us, so a second trip is avoided where possible.
- We look at the surrounds with you and agree the joints to renew.
- 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.
Before we arrive
- Where the joints are inside, avoid wetting them before we arrive
- Tell us about any previous sealing or DIY attempts
- Clear items away from the joints we are working on
How to get a quote
Getting a quote is simple: let us know the job and the location and its rough size. A few pictures by email make the job easier to understand.
Advice
Common questions in Thakeham
Is Thakeham within the area you cover?
Yes, we do. 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.
Can you help a landlord with a rental near Pulborough station?
Yes. We work for landlords and agents as well as homeowners, and several properties can be quoted together. You can phone 0345 464 0079 or drop us an email with the details for a clear quote.
Do the sealants smell?
Sometimes, a little. It fades as the sealant cures.
Can I add another job to the visit?
Yes. Tell us about everything you’d like done and we’ll quote it together.
What sealant do you use?
We choose the sealant for the joint, not the other way round. Where it moves, gets wet or faces the weather makes a difference.
Do you take out the old sealant first?
Yes, always, and completely. New silicone doesn’t stick to old silicone, so the joint is cleaned back first.
Where do you work from?
We’re based in Crawley, West Sussex, and we cover South East England, London and all of Scotland.
Can you seal over the old sealant?
No, it won’t last. It may look fine at first, but the new bead soon lifts. Removing the old sealant completely is the only lasting way.
Different surfaces, different methods
Sash and case windows
On a sash window, the mastic joint shows on the outside so we finish it carefully.
Stone surrounds
We take care not to mark the stone while raking out the old mastic.
What we can’t put right
We’d rather tell you now than do work that won’t last, so these are the limits:
- Decayed frames that need repair
- Cracked or broken glass
- Sashes that need overhauling
If you’re not sure, just call 0345 464 0079 or send us an email and we will give you a straight answer.
Surfaces we seal
- Timber door frames
- Stone surrounds
- Tenement windows
- Sash and case windows
- Brick reveals
- Period & listed homes
Also near Thakeham
Other services in Thakeham
How we quote for sand mastic
There’s no set price list. The quote depends on:
- How much old sealant there is and how hard it is to remove
- The type of sealant required
- Any mould that needs treating
- When we can work, for business premises
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 we need extra access for height. We take all of that into account in your quote.
What to tell us for a quote
Photos help, but a description is a good start. Try to tell us:
- Access, such as stairs, a lift or height
- If someone has resealed it before
- If it’s domestic, commercial or a hotel
- Photos by email, if that is easy
Call for a quick quote, or email us if that’s easier. Describe what needs sealing and we will explain what’s involved and send you a clear quote.
Aftercare tips
Good habits help new joints last longer. A few tips:
- Check the mastic when you check the paintwork
- Keep sills and gutters clear so water drains away
- Sort the mastic before the decorators arrive
- Get any rot dealt with first
Don’t touch or press the mastic while it hardens. It forms a skin fairly soon, but takes longer to harden fully.
It’s best to renew mastic before painting the windows. Painting over failed mastic hides the problem for a while.
Why it’s worth doing now in Thakeham
Silicone might seem the quicker option, but on period stone or brick it often looks out of place. Sand mastic suits the building and finishes neatly against the masonry. Around Thakeham, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.
There are no prices on our website, because each job is priced on what it involves. For a quick quote, please phone 0345 464 0079 or send us an email.
Why choose Mr Mastic in Thakeham
- Experience in homes, commercial sites and hotels
- Old sealant always removed completely
- 12-month guarantee on every job
- Rated 4.9 stars on Google