West Sussex · England
Window & door mastic in Plaistow, West Sussex
Mastic around window and door frames, sills and patio doors for householders, landlords and businesses in Plaistow. ARBOMaster approved applicators, fully insured, with a 12-month guarantee.
- Gaps between the frame and the inside reveal
- A bead that doesn’t match the frame
- Whistling draughts around closed windows
About our window mastic in Plaistow
Some gaps around frames are far deeper than they look. Filling it with sealant alone leaves a joint that cannot move properly, so we fit backing rod to set the right depth. The sealant then grips the two sides it should. If you have draughts coming in around windows and doors and gaps between the frame and the inside reveal, we can help, whatever the surface.
Mastic can only go onto a dry, clean joint, so window work in Plaistow is booked around the forecast. Let us know about access to all the frames, upstairs ones included.
You are covered for a year from the day we finish. If anything is not right with it, call 0345 464 0079 or drop us an email.
- Place
- Plaistow (RH14)
- Wider area
- West Sussex
- Guarantee
- 12 months on all our work
- Quote
- A clear quote up front
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Plaistow: your questions answered
What guarantee comes with window mastic in Plaistow?
Every job comes with our 12-month guarantee, wherever it is. We are also fully insured and ARBOMaster approved.
Will you come out to Plaistow?
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 get sealant to suit coloured frames?
Yes, in most cases. Mention the frame colour when you ask for a quote and we will use the nearest match.
Where are you based?
Our base is Crawley. We work across South East England, London and Scotland.
Can I do 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.
Do you work for hotels and businesses?
Yes. Commercial and hotel work is a large part of what we do, as well as homes. Working times can be discussed when we quote.
Can new window sealant be painted?
That depends on the product. Some hybrid sealants can be painted; silicone cannot. Mention any painting plans before we start.
I rent my home. Can I book you?
Yes, though it’s best to check with your landlord first. Many landlords are glad to have it sorted.
What happens if it’s left?
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. A reseal is a much smaller job. Around Plaistow, older homes often have timber in their floors and frames, and water through a failed joint can rot timber if it’s left.
What it costs depends on the size of the job, how hard the old material is to remove and access to the work. You will have a clear quote before any work starts.
Why choose Mr Mastic in Plaistow
- A 12-month guarantee on all work
- Colour picked to suit the job
- Homes, businesses and hotels
- Sanitary silicone with an anti-fungal additive in wet areas
Common problems we fix in Plaistow
Water runs down the glass onto the sill, and the ends of the sill, where it meets the wall, are where it gets in. Failed sealant there lets rain into the wall or behind the frame.
Most people get in touch after spotting something like this:
- Mastic that’s falling out in pieces
- Whistling draughts around closed windows
- Sealant in the wrong colour for the frame
- Cracked sealant at the sill ends
Schools such as Plaistow and Kirdford Primary School are buildings too, and the mastic around its windows and doors needs looking after like any other building’s.
Comparing quotes
- What the cure time is
- Whether all the old sealant comes out first
- What insurance they hold
- Whether you can choose the colour
Places near Plaistow
What else we do in Plaistow
Plaistow homes and the weather
Compared with the north and west, the South East gets less rain, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
In the older streets around Holy Trinity Church, frames set in older brick or stone need a sealant that suits the wall as well as the frame.
Plaistow is about 11 miles west of Horsham, in West Sussex. Plaistow gets the same service as everywhere we cover: the old material taken out, joints prepared properly and a 12-month guarantee. Across West Sussex, we cover 371 places, and Plaistow is one of them. Crawley is on our list too, about 17 miles from Plaistow.
All of RH14 is covered for window mastic. That includes homes and businesses on The Street, Loxwood Road and Oakfield. Close by, we work in Durfold Wood (1 mile north-west), Ifold (1 mile east), Mackerel's Common (2 miles south), Loxwood (2 miles east) and Kirdford (2 miles south). Larger places within reach include Horsham (11 miles east), Storrington (11 miles south-east), Billingshurst (6 miles south-east), Bewbush (15 miles east), Roffey (12 miles east) and Southwater (10 miles east).
What’s near Plaistow
Green spaces nearby include Shillinglee Lake.
How the job changes by surface
Timber windows & doors
Older timber windows in stone or brick can suit sand mastic rather than modern sealant. We’ll tell you which suits your home.
Window sills
Every drop off the glass ends up on the sill, so the sill ends and the joint under the frame are vital. Each is cleaned out and resealed.
How to look after the new joints
Joint life depends on how it’s used and looked after. We suggest:
- Keep paint and stain on wooden frames in good order
- Avoid harsh chemicals near the mastic
- Keep paint off silicone joints
- Wash the frames with mild soapy water
Keep the new mastic undisturbed while it cures, for as long as we advise. Do not point a pressure washer at the joints.
Look out for the warning signs: cracks in the mastic, gaps you can see light through, damp on the reveal or mould around the inside of the frame. If you notice one, it’s time to get the joint looked at.
For landlords and businesses
If you manage several properties in or around Plaistow, jobs at different addresses can be quoted together. Send us the addresses and the work at each.
Water getting past a failed joint can damage the building, which is a bigger problem in a rented property. Resealing at the right time is simple maintenance that we can handle for you.
How the visit works
On the day, we start by going over the job with you, so there are no surprises. We protect the surfaces around the joints before any work begins. The work generally takes anything from an hour or two to a full day, depending on how many frames there are. Somewhere as small as Plaistow, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- Each frame is looked over and we agree which ones need resealing.
- The old mastic is cut out and scraped back to clean surfaces.
- Where the gap is deep, backing rod goes in first.
- A flexible exterior sealant is applied in a colour to suit the frame.
- Every joint is tooled smooth and checked before we leave.
Preparing for the visit
- Plan for the work area to be out of bounds to pets and children
- Where the joints are inside, avoid wetting them before we arrive
- For business premises, tell us about site rules or sign-in
Get a quote
A good description makes for an accurate quote. Tell us where the job is, what’s wrong and how much there is, and email photos if that’s easy.
Advice
When it isn’t the sealant
New sealant can’t fix everything, and we’d rather say so up front. It will not solve:
- Misting between the panes of a double-glazed unit (that needs a new unit)
- Penetrating damp from a failed cavity tray or render
- A frame that has rotted at the joint
If you’re not sure, just call 0345 464 0079 or email us and we’ll give you a straight answer.
Joints and surfaces we work on
- Aluminium frames
- Timber windows & doors
- Composite doors
- Patio & French doors
- uPVC windows
- Window sills