West Sussex · England
Sand mastic for sash & case windows in Street End, West Sussex
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for homes and businesses in Street End and across West Sussex. Fully insured, ARBOMaster approved and guaranteed for a year.
- Wind and rain getting in round a sash window
- Silicone on a period window that looks wrong
- Gaps round a timber door in stone or brick
Signs you need sand mastic in Street End
Decorating can disturb tired mastic. Many people find it crumbling when they prepare the windows.
The most common problems we see are:
- Draughts and rain around sash boxes
- Gaps between timber frames and stone or brick
- Mastic that needs renewing before redecorating
- Cracked mastic round a front door frame
If you let a flat or house near Chichester station, any sash windows need sound mastic to keep draughts and rain out.
Questions to ask before booking
- Is the old sealant removed completely?
- What the quote includes, VAT included or not
- What guarantee comes with the work
- What insurance they hold
Sand mastic for homes and businesses in Street End
Sand mastic has long been used to fill the joint between timber frames and masonry. It’s a mix of sand and a linseed-oil-based binder, applied by hand. On period homes, it looks right where silicone wouldn’t. Common call-outs are for open joints round the window box and gaps round a timber door in stone or brick, across brick reveals, timber door frames and stone surrounds.
Somewhere as small as Street End, older homes often have timber frames set in stone or brickwork. Not every older frame suits a modern silicone bead, so the sealant has to be chosen to suit the building.
All of our work is guaranteed for twelve months, in Street End and everywhere else we cover.
- Place
- Street End (PO20)
- Region
- West Sussex
- Guarantee
- One year on every job
- Price
- Quoted before any work starts
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Towns and villages near Street End
What else we do in Street End
How the visit works
Every visit runs the same way: we look at the joints together, protect the area around them, carry out the job and tidy away. It usually takes anything from a few hours to a full day, depending on how many windows. Somewhere like Street End needs a little journey planning: tell us about narrow lanes, gates, long drives and where we can park. We bring what the job needs, so it can be finished in one trip where possible.
- We check each window surround and the condition of the joint.
- We rake out the old mastic and clean the joint.
- We fill deep gaps so the new mastic isn’t too thick.
- We point the joint with sand mastic by hand.
- The finish is dressed neatly.
How to prepare
- Tell us about any water getting in
- Tell us about access, such as stairs, a lift or high-level joints
- On commercial sites, let us know about site rules
Getting a quote
Need a quote? Please phone 0345 464 0079 or drop us an email with a few details. We’ll explain what we’d do and give you a clear price before we start.
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What affects the cost of sand mastic
Jobs vary more than people expect. What affects the quote:
- The type of sealant required
- The old material and how stubborn it is
- When we can work, for business premises
- Mould in or behind the old joints
A few things move the cost up or down: the old material and how easily it comes out, whether mould needs treating, and whether the work is at height. We take all of that into account in your quote.
What we need to know
When you contact us, these details help:
- A few photos by email, if you can
- The problem you’ve noticed
- Access, such as stairs, a lift or height
- Where the property is
To get a quote, ring 0345 464 0079 or email us and tell us where the job is and what the problem looks like. We’ll give you a clear price before any work starts.
Frames and glazing around Street End
Street End is within about 2 miles of the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. That’s hard on the mastic around older windows and doors, especially on the side facing the sea. London and the South East are among the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
For site and facilities teams at buildings such as Sidlesham Primary School, the mastic around its windows and doors needs looking after like any other building’s. If you live in an older home near St Mary Our Lady Sidlesham, frames set in older brick or stone need a sealant that suits the wall as well as the frame.
Street End is about 4 miles north of Selsey, in West Sussex. Whether you are in the middle of Street End or further out, we cover sand mastic for every kind of property. Our area takes in 371 places across West Sussex, from the larger towns to small villages. There’s also a page for Portsmouth, about 13 miles away.
Jobs for sand mastic in PO20 is quoted and booked the same way as anywhere else. If you need sand mastic at a property on Church Lane, Selsey Road and Chalder Lane or a nearby road, we can help. We also cover the places around Street End: Sidlesham Common (1 mile north-west), Sidlesham (1 mile south), Keynor Estate (1 mile south), Fisher (1 mile north-east) and South Mundham (2 miles north-east). Larger places within reach include Bognor Regis (5 miles east), Chichester (4 miles north), Selsey (4 miles south), Littlehampton (11 miles east), Emsworth (8 miles north-west) and Rustington (12 miles east).
Landmarks near Street End
The nearest railway station is Chichester station, about 3.2 miles north of the centre. Well-known places in the area include Chichester Castle (3.8 miles north) and Chichester Cathedral Treasury (3.4 miles north).
Landlord and commercial work in Street End
Housing providers, facilities teams and property managers book us too in Street End and across West Sussex. Several sites can go on one quote, and we are fully insured for the work.
In hotels, rooms out of use cost money, so the work can be planned room by room. Hotel work is part of what we do, alongside homes and businesses.
Questions from Street End
Do you work for landlords with property near Chichester station?
Yes, landlords and agents are among the people we work for, and several properties can go on one quote. Just ring 0345 464 0079 or email us with the address and what needs doing, and we’ll give you a clear quote.
Is Street End within the area you cover?
Yes. Street End is within the area we cover, which takes in towns, villages and rural addresses. We work across London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Can you do several jobs on one visit?
Yes, we can. More than one area can be quoted together.
What does sand mastic cost?
There’s no set price, as it depends on the job: how much there is, what’s there now, how we reach it and what it needs. We agree the price before any work begins.
Can I paint the new mastic?
Traditional guidance is not to paint over sand mastic. If you are redecorating the window, ask us first and we will talk you through it.
Do you take out the old sealant first?
Yes. Sealing over old sealant is the main reason resealing fails early, and it’s something we never do.
What should I tell you?
Just the basics: where it is, what you’ve noticed and how we reach it. Then ring 0345 464 0079 or email us.
Is sand mastic better than silicone for my windows?
Sand mastic normally suits period timber windows best. On modern frames, we’d normally use a flexible sealant.
Should I try it myself first?
Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
The difference is mostly in the preparation and the product. Joints are cleaned back to sound surfaces and dried, and the sealant is chosen for how the joint moves and where it is, and the work is guaranteed for a year.
Surface by surface
Tenement and terrace windows
Windows above ground floor need the right access. Let us know the floor and we’ll confirm access.
Timber door frames
Period doors in stone or brick openings are often pointed with sand mastic. The method is the same as for windows.
What happens if it’s left?
Not every draught comes from the sashes themselves. Open mastic joints round the box can let air in and new mastic seals them. Around Street End, older homes often have timber in their floors and frames, and water through a failed joint can rot timber if it’s left.
What you pay reflects the work, not guesswork. That’s why we ask about the job first and give you a clear price before any work starts.
What you get with us
- Homes, businesses and hotels
- One-year guarantee on every job
- Fully insured
- 4.9 on Google from 180+ five-star reviews
Take a look at how sealant jobs are priced or our reviews.