West Sussex · England
Window Mastic in Chilgrove
We cover Chilgrove for mastic around window and door frames, sills and patio doors. Old sealant removed completely, joints prepared properly and every job guaranteed for a year.
- Gaps left after new windows were fitted
- Damp patches on the reveal after heavy rain
- Old mastic that has gone black or come away
How we handle window mastic in Chilgrove
The new joint does not have to be white. We can seal in white, brown, anthracite grey, black or clear, so the line suits the frame instead of standing out. If you’re dealing with black, perished sealant on frames and cracked internal joints between frame and plaster, we can put it right, whatever the surface.
Outdoor sealant needs dry, clean surfaces, so work on frames around Chilgrove is planned for dry weather. Tell us about access to every side of the house, including upper-floor windows.
Whatever the size of the job, you get the same 12-month guarantee.
- Place
- Chilgrove (PO18)
- Region
- West Sussex
- Cover
- A year, on every job
- Price
- A clear quote up front
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
The process
We keep the work tidy and contained to the joints we’re treating, so you can carry on as normal. Expect the work to take a few hours for a handful of frames, longer for a whole house. For a village or hamlet like Chilgrove, 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 go round the frames with you and agree the list.
- We remove the old mastic and clean the frame edge and wall.
- Deep gaps get closed-cell backing rod to set the depth.
- A flexible exterior sealant is applied in a colour to suit the frame.
- We tool each bead neatly and check every joint is closed.
Before we arrive
- Move anything stored near the joints
- Tell us about any previous sealing or DIY attempts
- Let us know if you’ve seen damp or leaks
Ask for a quote
For window mastic in Chilgrove, phone 0345 464 0079 or drop us an email. Tell us what the problem is and where, and you’ll get a clear quote before we start.
Advice
FAQs for Chilgrove
Can you do window mastic in Chilgrove?
Yes. Our work covers London and the South East, and Chilgrove is part of that. You can phone 0345 464 0079 or email us and let us know what needs doing, and we will give you a clear price.
Is there a guarantee on window mastic in Chilgrove?
Every job comes with our 12-month guarantee, wherever it is. We’re also fully insured and ARBOMaster approved.
Will new mastic stop draughts?
Often, yes. The gap between frame and wall is a common source of draughts, and sealing the inside and outside joints closes that path.
What does window mastic cost?
Size, access and the old material all affect the cost. Call for a quick quote.
Is it worth trying it myself?
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.
Are you ARBOMaster approved?
Yes. We hold ARBOMaster approved applicator status, and we are fully insured.
Will you leave a mess?
Very little: the area around the joints is protected first, and we clear up the old sealant and our materials before we leave.
Where do you work from?
Our base is in Crawley, and we cover South East England, London and all of Scotland.
For landlords and businesses
A neglected joint can let water reach the structure, which matters even more when someone else lives there. Resealing at the right time is simple maintenance.
Letting agents and landlords in Chilgrove can book us as well as householders. Sealant work between tenants keeps a property looking cared for.
How we quote for window mastic
Jobs vary more than people expect. What affects the quote:
- Any mould that needs treating
- The old material and how stubborn it is
- How many rooms, windows or areas are involved
- Any working-time requirements on site
No two jobs are quite the same, so each one gets its own quote. The number of joints, how easy they are to reach and the sealant needed all make a difference.
Helping us quote
Before you ask for a quote, have a think about:
- The type of property
- Whether it has been sealed before
- The rough size of the job
- How we’d reach the joints
Every job is quoted individually, so start by telling us what you need. Just phone 0345 464 0079 or drop us an email with the details and send photos if you have them.
Looking after it afterwards
Once the sealant has cured, a few habits help it last:
- Look round the frames every year or so
- Repaint timber before it’s bare
- Avoid harsh chemicals near the mastic
- Don’t paint over the silicone
Keep sill grooves and drainage slots clear, so water can run away instead of sitting against the joint.
Wet, windy weather is when failed mastic shows itself, but resealing works best in dry conditions. Sorting cracked mastic early means the joint is sound before the bad weather.
What window mastic looks like in Chilgrove
The South East is one of the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind. Historic houses like West Dean House (about 1.6 miles south-east) are a reminder that the area around Chilgrove has older buildings as well as new. Where a home is older, older frames set in brick or stone need a sealant that suits them, and sometimes that is traditional sand mastic.
In and around Chilgrove, as anywhere, good window mastic starts with a clean, dry, properly prepared joint. Historic houses such as West Dean House, about 1.6 miles south-east, show how far back building around Chilgrove goes, and older homes nearby need a sealant that suits their walls.
Chilgrove is about 6 miles north of Chichester, in West Sussex. For window mastic in and around Chilgrove, it’s easy to get a quote: please call 0345 464 0079 or email us. We cover West Sussex from our Crawley base, Chilgrove included. Our area takes in 371 places across West Sussex. We also work in Portsmouth, around 14 miles away.
Our applicators cover all of PO18 for window mastic and the streets around it. Close by, we work in East Marden (2 miles west), Didling (3 miles north), Elsted (4 miles north), Compton (4 miles west) and Ingrams Green (4 miles north). Larger places within reach include Bognor Regis (10 miles south-east), Chichester (6 miles south), Selsey (13 miles south), Littlehampton (14 miles south-east), Emsworth (7 miles south-west) and Rustington (15 miles south-east).
Landmarks near Chilgrove
Well-known places in the area include Chichester Centre (5.2 miles south) and Museum of Gardening (1.7 miles south-east). Open spaces near Chilgrove include Kingley Vale National Nature Reserve and Bow Hill.
DIY sealant or a professional job?
Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, 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 need the right product, the right access and the right method.
Surface by surface
Patio & French doors
Water at the foot of a door frame is not always the mastic: worn seals, blocked drainage slots or a poor threshold detail can be the cause. We check before we reseal.
uPVC windows
Some uPVC windows were sealed at fitting with a quick bead that never bonded. We cut it out, back any deep gaps and reseal properly.
Why deal with it now?
Once mastic fails, rain can get between the frame and the wall. Left long enough, it can stain inside walls, spoil plaster and rot wooden frames. Resealing now is a small job by comparison. Where a wall is exposed, as many are in small places like Chilgrove, wind-driven rain gets into any failed joint, and damp in older walls is slow to dry out.
Homes and businesses are quoted the same way: how much there is to do, how we reach it and what it needs, plus any working-time requirements on site. Ask us for a quote and we will explain what it covers.
Why Chilgrove clients choose us
- A 12-month guarantee on all work
- ARBOMaster approved applicator
- Rated 4.9 stars on Google
- Domestic, commercial and hotel work
Read our cost guide and what customers say.