West Sussex · England
Window Mastic in Lindfield
Window mastic in Lindfield from a team with over 20 years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Sealant in the wrong colour for the frame
- Mastic that is falling out in pieces
- Water coming in at the bottom corners of a door
How the visit works
A visit follows a simple pattern: we check the joints, protect the area around them, carry out the job and clear up. It generally takes a few hours for a few frames, or a day or more for a whole house. A visit to Lindfield is planned like any other: the time, the access and where to park are agreed in advance. Outdoor jobs depend on a dry day, since sealant needs a dry surface.
- First we look at every frame and agree the list.
- The old mastic is cut out and the surfaces cleaned back.
- Deep gaps are filled with backing rod to set the depth.
- New exterior sealant goes on in a matching colour and is tooled smooth.
- Every joint is checked before we leave.
Before we arrive
- Let us know about parking restrictions
- Tell us about any previous sealing or DIY attempts
- Clear items away from the joints we are working on
Get a quote
Need a quote? Please ring 0345 464 0079 or send us an email and tell us about the job. You will know what we plan to do, and what it will cost, before any work begins.
Advice
How we handle window mastic in Lindfield
If you can feel air around a shut window, the gap is often at the frame. A new joint stops the air getting through and quietens the whistle on windy days. If the draught is through the window seals instead, we will tell you. Common call-outs are for damp patches on the reveal after heavy rain and gaps between the frame and the inside reveal, across window sills, patio & French doors and aluminium frames.
Around Lindfield, conservatories, garden rooms and patio doors are often part of the house. Their glazing joints and frame seals are as much a part of the job as the windows, and any older timber or sash windows need a sealant that suits them.
We guarantee the work for a year. If something isn’t right with it in that time, tell us and we’ll put it right.
- Where
- Lindfield (RH16)
- Wider area
- West Sussex
- Cover
- A year, on every job
- Price
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
Windows and doors in Lindfield
With historic houses such as Ockenden Manor (about 2.7 miles west) nearby, there’s older building stock in the area around Lindfield as well as newer homes. In older buildings, older frames set in brick or stone need a sealant that suits them, and sometimes that is traditional sand mastic. Compared with the north and west, the South East gets less rain, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
Schools such as Lindfield Primary Academy are buildings too, and its window and door frames need their mastic kept sound, just like a home’s. Homes close to All Saints Church include some older properties, and frames set in older brick or stone need a sealant that suits the wall as well as the frame.
Lindfield is about 1 mile north-east of Haywards Heath, in West Sussex. For window mastic in and around Lindfield, it’s easy to get a quote: please phone 0345 464 0079 or drop us an email. We’re based in Crawley and cover West Sussex. 371 places in West Sussex are on our list. We also work in Crawley, around 8 miles away.
All of RH16 is within our area for window mastic, from the main roads to the quietest streets. If you need window mastic at a property on Alma Road, Lewes Road and Dukes Road or a nearby road, we can help. We also cover Walstead (1 mile south-east), Ardingly (2 miles north), Horsted Keynes (3 miles north-east), Highbrook (3 miles north) and Little London (3 miles north). We also work in nearby towns such as Crawley (8 miles north-west), Horsham (11 miles west), Burgess Hill (4 miles south-west), East Grinstead (8 miles north), Shoreham-by-Sea (15 miles south-west) and Broadfield (8 miles north-west).
Local landmarks in Lindfield
In Lindfield, that means homes and buildings near The Witch Inn, Oathall Community College and Tavistock and Summerhill School. The nearest railway station is Haywards Heath station, roughly 1.1 miles south-west. Other landmarks nearby include Waterbury Castle (2.7 miles north-east) and Parish Museum (under half a mile north-east). Green spaces nearby include Blunts Wood and Paiges Meadow.
Signs you need window mastic in Lindfield
Frames are never completely still. Sun on a frame makes it expand, and it contracts again overnight, while the masonry beside it stays put. A sealant that can’t keep up eventually tears.
These are the problems we are asked about most:
- Gaps where the sill meets the wall
- Gaps left after new windows were fitted
- Rain getting in at the frame or under the sill
- A bead that does not match the frame
For landlords with property near Haywards Heath station, renewing tired window mastic between tenants heads off draught and damp complaints.
Questions to ask before you book
- How long to leave it before use
- Whether you can choose the colour
- What preparation is included
- Who turns up on the day
Landlords, agents and businesses in Lindfield
We also work for property managers and facilities teams. We can quote a run of properties together.
A neglected joint can let water reach the structure, which is a bigger problem in a rented property. Keeping joints in good order is simple maintenance.
What the job involves on each surface
Composite doors
If the door itself is draughty, the issue may be the door seals or hinges rather than the frame mastic. We seal the frame and let you know about anything else.
Window sills
Every drop off the glass ends up on the sill, so the joints at each end and underneath matter. They’re cut out and resealed with exterior sealant.
Looking after it afterwards
A little care helps the new joints last. Our advice:
- Wipe condensation off the frames
- Keep paint and stain on wooden frames in good order
- Walk round the house once a year and look at the joints
- Keep paint off silicone joints
Keep the new mastic undisturbed while it cures, following the cure time we give you. Don’t point a pressure washer at the joints.
Draughts get worse, not better. As the old mastic shrinks further, more air gets through, and a cold room gets colder. Resealing closes it.
Can I do it myself?
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and doesn’t move well, and the joint depth matters as much as the finish.
Sealing over old silicone is the commonest DIY error. Silicone does not stick to old silicone, so it lifts and traps water and mould underneath. Everything old must be removed first.
Lindfield questions
Is Lindfield within the area you cover?
Yes. Lindfield is within the area we cover, which takes in towns, villages and rural addresses. Our work covers London and the South East. Just mention lanes, gates or anything else about the route when you book.
Do you work for landlords with property near Haywards Heath station?
Yes, rental work is part of what we do. You can call 0345 464 0079 or drop us an email with the address and a few details, and we will give you a fixed price before any work starts.
Can you work on commercial sites?
Yes. Hotels, offices and other businesses use us, and we are fully insured.
How long before the joint can be used?
Cure times vary by product and the temperature. Before we leave, we will tell you the cure time.
Can you do the inside joint as well?
Yes, we do both. Inside, the joint between frame and plaster is sealed neatly, using a paintable sealant if you want to decorate.
Do you work on first-floor windows?
Yes, where they can be reached safely. Tell us about access when you get in touch and we’ll plan for it.
Do you have insurance?
Yes. Full insurance covers our work.
What should I tell you?
Where the job is, what the problem is and roughly how big it is. Photos by email help too.
When something else is needed
Before booking, it’s worth knowing the limits:
- A frame that has rotted at the joint
- Misting between the panes of a double-glazed unit (that needs a new unit)
- Draughts through the window seals rather than the frame
If in doubt, call 0345 464 0079 or send us an email and we’ll say what we think before booking.
Surfaces we seal
- Window sills
- Aluminium frames
- Patio & French doors
- Composite doors
- uPVC windows
- Timber windows & doors