West Sussex · England
Sand Mastic in Sidlesham Common
Window and door surrounds in Sidlesham Common need attention? We remove the old material, prepare the joints and seal them properly, and the work is guaranteed for a year.
- Cracked mastic round a front door frame
- Crumbling sand mastic round a window
- Silicone on a period window that looks wrong
Keeping the joints in good condition
Aftercare is simple, and it makes a real difference:
- Get any rot dealt with first
- Keep sills and gutters clear so water drains away
- Check with your local planning authority if your home is listed
- Take care around the mastic when scraping paint
Avoid sealing over the mastic with silicone. If you see a crack, ask us to take a look before trying a quick fix.
An open joint round the box lets weather through. The longer it’s left, the more the joint opens.
Sand mastic in Sidlesham Common, done properly
Old sand mastic cracks, crumbles and falls out over time, leaving gaps round the window. We rake it out and renew it so the surround looks right again. Typical jobs include weathered mastic on the most exposed windows and tired mastic found when preparing windows for paint, across stone surrounds, timber door frames and sash and case windows.
Mastic can only go onto a dry, clean joint, so window work in Sidlesham Common is booked around the forecast. Let us know about access to all the frames, upstairs ones included.
All of our work is guaranteed for twelve months.
- Location
- Sidlesham Common (PO20)
- Wider area
- West Sussex
- Guarantee
- 12 months on all our work
- Price
- A clear quote up front
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
How the job changes by surface
Brick reveals
We rake out the old mastic and pack deep voids before the new mastic goes in.
Timber door frames
Period doors in stone or brick openings are often pointed with sand mastic. We renew it the same way as on windows.
What we can’t put right
We will not take on work that won’t last, so here’s what sealant can’t put right:
- Timber that has rotted
- Sashes that need overhauling
- Damaged stone surrounds
If in doubt, phone 0345 464 0079 or email us and we will say what we think.
Where we work in Sidlesham Common
- Brick reveals
- Period & listed homes
- Stone surrounds
- Timber door frames
- Tenement windows
- Sash and case windows
Sidlesham Common questions
Does the coastal weather in Sidlesham Common affect outside sealant?
Near the coast, wind-driven rain and, nearer the shore, salt air make outside sealant work harder. Choosing the right sealant for the frame and wall, laid at the right depth, helps it last.
Is Sidlesham Common within the area you cover?
Yes, Sidlesham Common is covered. We work across London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
Is it possible to paint over sand mastic?
The usual advice is to leave sand mastic unpainted. If you’re redecorating the window, ask us first and we’ll advise.
What exactly is sand mastic?
A traditional pointing material made from sand and a linseed-oil-based binder, used between timber frames and stone or brick.
Is it messy?
Tidy work is part of the job. We protect what’s around the joints.
When will the new mastic be hard?
It skins over fairly quickly but takes longer to harden fully. We will explain what to expect before we leave.
Where are you based?
We’re a Crawley-based firm, with over 20 years’ experience. Our area covers South East England, London and Scotland.
Are you ARBOMaster approved?
Yes. We are ARBOMaster approved, the scheme for applicators of Arbo sealants.
What sand mastic looks like in Sidlesham Common
Sidlesham Common is within about 2 miles of the coast, and homes near the sea take more wind-driven rain, with salt in the air closer to the shore. That is hard on the mastic around older windows and doors, especially on the side facing the sea. Rainfall in the South East is lower than in much of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
If you live in an older home near St Mary Our Lady Sidlesham, the joint between an old wall and a newer frame is normally the first place rain gets in.
Sidlesham Common is about 3 miles south of Chichester, in West Sussex. We provide sand mastic to homes and businesses in Sidlesham Common. Sidlesham Common is one of 371 towns and villages in West Sussex we cover. Our Portsmouth page covers work nearby.
Jobs for sand mastic in PO20 works the same way as everywhere else we cover. That includes homes and businesses on Chichester Road and Jury Lane. Other places close to Sidlesham Common include Street End (1 mile south-east), Sidlesham (1 mile south), Fisher (1 mile east), Keynor Estate (2 miles south) and South Mundham (2 miles east). Within a short drive, we also cover Bognor Regis (5 miles east), Chichester (3 miles north), Selsey (4 miles south), Littlehampton (12 miles east), Emsworth (7 miles north-west) and Rustington (13 miles east).
Landmarks near Sidlesham Common
In Sidlesham Common, that means homes and buildings near The Blacksmith's Arms Public House, among other places. Sidlesham Common’s nearest station is Chichester station, about 2.6 miles north. Well-known places in the area include Chichester Cathedral Treasury (2.9 miles north) and Chichester Castle (3.2 miles north). For a walk, there’s Nutborne Marshes.
Do you need sand mastic in Sidlesham Common?
Most of it is simply age. Even well-laid mastic needs renewing in time, depending on exposure and upkeep.
Any of these means the joints need attention:
- Draughts and rain around sash boxes
- Old cement repairs round a window that have failed
- Silicone on a period window that looks wrong
- Open joints round the window box
Rented homes near Chichester station change hands often, and any sash windows need sound mastic to keep draughts and rain out.
Questions to ask before you book
- What happens if they find a problem under the old sealant
- What product goes in the joint
- Whether they seal over old material or remove it
- What the quote includes, VAT included or not
The process
We keep the work tidy and contained to the joints we’re treating, so you can carry on as normal. The job usually takes a few hours per window, depending on the condition of the joints. For a village or hamlet like Sidlesham Common, 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.
- First we agree which joints need doing.
- 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.
Before we arrive
- Clear items away from the joints we’re working on
- Tell us about any water getting in
- Mention if the joints have been sealed before
Get a quote
Want a quote for sand mastic? Please ring 0345 464 0079 or drop us an email with a few details. You’ll know what we plan to do, and what it will cost, before any work begins.
Related advice
Should I try it myself first?
Too much sealant is as bad as too little. A thick, smeared bead looks untidy and does not move well, and the joint depth matters as much as the finish.
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
Places near Sidlesham Common
Other services in Sidlesham Common
How we quote for sand mastic
The quote reflects the job in front of us. We take into account:
- Mould in or behind the old joints
- The number and length of the joints
- Any working-time requirements on site
- How much old sealant there is and how hard it is to remove
What it costs depends on the size of the job, how much old material has to come out and access to the work. You will have a clear quote before any work starts.
What to tell us for a quote
To make quoting easier, please include:
- Where the job is, and your postcode
- What the problem is, such as mould, gaps, leaks or cracking
- Roughly how big the job is
- Photos by email, if that’s easy
For a quick quote, get us on the phone, or email us if that’s easier. Describe what needs sealing and we will talk you through the work.