Isle of Wight · England
Plaish Window Mastic
We cover Plaish for mastic around window and door frames, sills and patio doors. Old material cut out, joints cleaned and sealed neatly and a one-year guarantee.
- Water coming in at the bottom corners of a door
- Rushed sealant from a window installation
- Gaps between the frame and the inside reveal
How we quote for window mastic
There’s no set price list. The quote depends on:
- How much old sealant there is and how hard it is to remove
- Any working-time requirements on site
- How easy the joints are to reach
- How many rooms, windows or areas are involved
Commercial jobs are quoted on the same basis as homes: the amount of work, the access and the products needed. Ask us for a quote and we’ll explain what it covers.
What to tell us for a quote
There’s no need for technical detail. It helps if you can tell us:
- The address or postcode of the job
- What the problem is, such as mould, gaps, leaks or cracking
- Any previous sealing or DIY work
- The rough size of the job
We don’t publish a price list. Instead, your job gets its own clear quote. To get started, ring 0345 464 0079 or drop us an email.
How we handle window mastic in Plaish
The mastic around a window or door seals the gap between the frame and the wall. Once that seal fails, wind and rain find the gap. Our applicators cut it out and replace it with a flexible, weatherproof sealant. We work on uPVC windows, timber windows & doors and composite doors, and the jobs we see most are cracked sealant at the sill ends and mastic that’s falling out in pieces.
Somewhere as small as Plaish, older homes often have timber frames set in stone or brickwork. Older buildings like these do not always suit modern silicone, and sometimes a traditional sand mastic is the better choice.
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.
- Location
- Plaish (PO30)
- Region
- Isle of Wight
- Cover
- 12 months on all our work
- Price
- Quoted before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
When something else is needed
New sealant cannot fix everything, and we will tell you before any work starts. It will not solve:
- Soft or decayed wood in the frame
- A failed sealed unit that has misted up
- A door that needs adjusting, rehanging or new seals
If in doubt, call 0345 464 0079 or drop us an email and we will say what we think.
Joints and surfaces we work on
- Aluminium frames
- uPVC windows
- Window sills
- Timber windows & doors
- Patio & French doors
- Composite doors
What window mastic looks like in Plaish
With historic houses such as Carisbrooke Castle (about 0.8 miles north-east) nearby, there’s older building stock in the area around Plaish as well as newer homes. Where a home is older, older timber frames in brick or stone need a different approach from a modern uPVC window. 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.
If you live in an older home near Church of St. Nicholas in Castro, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint. For site and facilities teams at buildings such as St Thomas of Canterbury Catholic Primary School, its window and door frames need their mastic kept sound, just like a home’s.
Plaish is about 2 miles south-west of Newport, in the Isle of Wight. If you need window mastic in Plaish, it’s easy to get a quote: please ring 0345 464 0079 or send us an email. We’re based in Crawley and cover the Isle of Wight. We cover 125 towns and villages across the Isle of Wight. There’s also a page for Portsmouth, about 14 miles away.
Our applicators cover all of the PO30 postcode area for window mastic. If you are just outside Plaish, we cover Bowcombe (1 mile south-west), Clatterford (1 mile north-east), Carisbrooke (1 mile north-east), Gunville (1 mile north) and Gatcombe (2 miles south-east). Further out, we also cover Ryde (8 miles east), Cowes (5 miles north), Sandown (8 miles east), Shanklin (8 miles south-east), Ventnor (8 miles south-east) and East Cowes (5 miles north-east). Island and remote addresses take a little more planning, so please mention your location when you phone 0345 464 0079 or send us an email.
Near you in Plaish
Typical jobs here are in homes near The Blacksmiths Arms and Christ The King College. Other landmarks nearby include Carisbrooke Castle (0.8 miles north-east) and Whitecroft Hospital (1.4 miles south-east). For a walk, there’s Brighstone Down and Briddlesford Nature Reserve.
What happens on the day
You don’t need to clear the whole room or building before we come, just the space around the work. Everything nearby is protected, and the job takes anything from an hour or two to a full day, depending on how many frames there are for a typical job. In a small place like Plaish, access is generally the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- Each frame is looked over and we agree which ones need resealing.
- The old mastic is cut out and scraped back to clean surfaces.
- 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
- Tell us about any previous sealing or DIY attempts
- Tell us if parking is tricky
- Mention any tricky access
Ask for a quote
For a quote, ring 0345 464 0079 or email us with the location and a short description of the problem. You will have a clear quote before any work starts.
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Looking after it afterwards
So the new joints stay in good condition:
- Don’t use solvent cleaners on the joint
- Don’t aim a pressure washer at the joints
- Keep drainage slots and sill grooves clear
- Check the mastic once a year
Most silicone sealants won’t take paint, so mention any painting plans before work begins. We can use a paintable sealant where that matters.
Signs to watch for: split or missing mastic, gaps, damp patches inside or black mould on the reveal. If you notice one, it’s time to get the joint looked at.
Towns and villages near Plaish
Also in Plaish
For landlords and businesses
Mouldy or split sealant often shows up at the end of a tenancy, and it’s easy to sort out between tenants. We can quote for more than one property at once.
We also work for property managers and facilities teams in Plaish and across the Isle of Wight. Several sites can be quoted together.
Different surfaces, different methods
Patio & French doors
Not every patio door leak is a mastic problem: blocked drain slots, worn brush seals and threshold details can let water in too. We check before we reseal.
Window sills
Where a sill meets brick or render, the ends often crack first. A tight seal at each end keeps rain out of the wall.
Leave it or put it right?
A cracked joint around a frame lets rain into the wall. Left long enough, it can stain inside walls, spoil plaster and rot wooden frames. A reseal is a much smaller job. Where a wall is exposed, as many are in small places like Plaish, wind-driven rain gets into any failed joint, and older walls, once damp, take a long time to dry.
Doing several joints on one visit is usually more efficient than separate visits, so it’s worth mentioning everything you’d like done. You’ll get one clear quote for the whole job.
Why Plaish clients choose us
- White, clear, grey or coloured to suit, where the product allows
- Domestic, commercial and hotel work
- One-year guarantee on every job
- 180+ five-star Google reviews
Questions from Plaish
Is Plaish within the area you cover?
Yes, Plaish is covered. We work across 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 do window mastic in Plaish?
Yes. We work across London and the South East, and Plaish is part of that. Just phone 0345 464 0079 or email us with a few details of the job, and we’ll send you a clear quote.
Are you an approved applicator?
Yes. Mr Mastic is an ARBOMaster approved applicator and we are fully insured too.
What should I tell you?
A short description and the location, plus pictures if you have them. We will ask anything else we need to know.
Can you work on commercial sites?
Yes. We work in offices, washrooms, hotels and other commercial premises, as well as homes. Working times can be discussed when we quote.
Can you do upstairs windows?
Yes, where it’s safe. For high or awkward windows, we will tell you what access is needed.
I rent my home. Can I book you?
We can work for tenants, landlords or agents. Just make sure your landlord agrees.
How do I get a quote for window mastic in Plaish?
Size, access and the old material all affect the cost. Ask us for a quote.