Isle of Wight · England
Bowcombe Sand Mastic
Professional sand mastic in and around Bowcombe, with every bit of old sealant taken out first.
- Gaps between timber frames and stone or brick
- Draughty sash windows at the surround
- Old cement repairs round a window that have failed
For landlords and businesses
Water getting past a failed joint can damage the building, which matters even more when someone else lives there. Resealing at the right time is simple maintenance that we can handle for you.
Hotels need rooms back in use, so the work can be planned room by room around your bookings where we can. Hotel work is part of what we do, alongside homes and businesses.
About our sand mastic in Bowcombe
Silicone on a period window often looks wrong and doesn’t suit the building. Sand mastic gives a finish that matches the age of the house and we can swap the silicone for it. We are often asked to deal with modern sealant on a period surround and wind and rain getting in round a sash window, on sash and case windows, timber door frames and brick reveals.
Homes in small places like Bowcombe often stand in the open, with little to shelter their windows from wind and rain. That exposure dries out and cracks the mastic around frames and sills faster.
A one-year guarantee comes with the work, just as it does everywhere we cover.
- Where
- Bowcombe (PO30)
- Region
- Isle of Wight
- Cover
- One year on every job
- Quote
- A clear quote up front
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
Different surfaces, different methods
Tenement and terrace windows
Upper-floor windows need access planning. Tell us the height and we will confirm what’s needed.
Timber door frames
Doors face weather and wear, so their mastic can fail sooner. It’s renewed by hand.
Quotes for sand mastic in Bowcombe
You’ll get a clear quote before work begins. It takes into account:
- The size of the job
- The product the joint needs
- How many areas need sealing
- The old material and how stubborn it is
Homes and businesses are quoted the same way: the amount of work, the access and the products needed, plus any working-time requirements on site. Ask us for a quote and we’ll go through it with you.
What we need to know
To help us quote quickly, please include:
- The address or postcode of the job
- What the problem is, such as mould, gaps, leaks or cracking
- Whether it’s a home or a business
- A few pictures by email, if you can
Getting a quote is simple: let us know the job and the location and its rough size. A few photos by email make the job easier to understand.
What we’re called out for in Bowcombe
Shallow joints are a common cause. A thin layer doesn’t hold well so we make sure the new mastic is the right thickness.
Signs it’s time to call us include:
- Draughty sash windows at the surround
- Failed mastic on an exposed elevation
- Mastic dropping out of the joint
- Gaps where the frame meets the masonry
For an older house near a landmark such as Church of St. Nicholas in Castro, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
What your quote should include
- What happens if the job turns out different
- Who does the work, and how experienced they are
- Which sealant they’ll use, and why
- How long to leave it before use
Bowcombe: your questions answered
What guarantee comes with sand mastic in Bowcombe?
Every job comes with our one-year guarantee, wherever it is. We are fully insured, and an ARBOMaster approved applicator.
Do you cover Bowcombe for sand mastic?
Yes, Bowcombe is within the area we cover. We work across London and the South East. Just phone 0345 464 0079 or send us an email with a few details of the job, and we will give you a clear price.
How long does the job take?
Most jobs take a few hours per window, depending on the condition of the joints, including preparation and clearing up. We will confirm how long when we quote.
What does sand mastic cost?
Size, access and the old material all affect the cost. Call for a quick quote and we’ll talk you through it.
Does someone need to be in?
We need access to the joints, so we will agree that with you when we book. For inside work, that normally means someone being in.
Is there any odour?
Some sealants have a smell while they cure, but it fades. Opening a window helps.
Are you insured?
Yes, we are fully insured.
Can tenants book the work?
Yes. Check with your landlord; we can send the quote to them too.
Places near Bowcombe
Also in Bowcombe
What we do, step by step
You don’t need to clear the whole room or building before we come, only the area right around the joints. Everything nearby is protected, and the job takes a few hours for a single window, longer for several in most cases. Somewhere like Bowcombe needs a little journey planning: let us know about lanes, gates and parking. Everything for the job comes with us, so a second trip is avoided where possible.
- We check the window surrounds and agree which joints need renewing.
- We rake out the old mastic and clean the joint.
- Large voids are packed out first, so the mastic isn’t too thick.
- The mastic is mixed, pressed into the joint by hand and shaped.
- The finish is dressed so it sits neatly against the stone or brick.
Getting ready for the visit
- Tell us about any water getting in
- Clear the area around the work
- Let us know about earlier repairs to the joints
Ask for a quote
For a quote, ring 0345 464 0079 or drop us an email and tell us where the job is and what the problem looks like. We’ll send you a clear quote before any work starts.
Read more
When it isn’t the sealant
Sealant isn’t the answer to every problem, and we’ll tell you before work begins. Sealant won’t put right:
- Sash cords, weights and draught-proofing of the sashes
- Rotten sashes, sills or window boxes (a joiner’s job)
- Damaged stone surrounds
Not sure which it is? You can call 0345 464 0079 or email us and we’ll tell you honestly.
Surfaces we seal
- Stone surrounds
- Tenement windows
- Brick reveals
- Timber door frames
- Sash and case windows
- Period & listed homes
Frames and glazing around Bowcombe
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. Historic houses like Carisbrooke Castle (about 1.2 miles north-east) are a reminder that the area around Bowcombe has older buildings as well as new. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window.
For site and facilities teams at buildings such as Christ The King College, larger buildings have plenty of frames, and the mastic around each one ages.
Bowcombe is about 2 miles south-west of Newport, in the Isle of Wight. We provide sand mastic to homes and businesses in Bowcombe. Bowcombe is one of 125 places in the Isle of Wight we cover. For nearby work, see our Portsmouth page (14 miles or so).
Postcode districts we cover here for sand mastic: PO30. Nearby, we also carry out sand mastic in Plaish (1 mile north-east), Clatterford (1 mile north-east), Carisbrooke (1 mile north-east), Gunville (1 mile north-east) and Gatcombe (2 miles south-east). We also work in nearby towns such as Ryde (8 miles east), Cowes (6 miles north), Sandown (8 miles east), Shanklin (8 miles south-east), Ventnor (8 miles south-east) and East Cowes (6 miles north-east). If you are somewhere remote, a little more planning is needed, so mention it when you ask for a quote.
Landmarks near Bowcombe
We work in homes and buildings around The Blacksmiths Arms and the streets around them. Other landmarks nearby include Whitecroft Hospital (1.6 miles east) and Isle of Wight Music Museum (2.3 miles north-east). Green spaces nearby include Brighstone Down.
Looking after it afterwards
How long the joints last depends on use and care. Here’s what we suggest:
- Ask a joiner to look at soft timber first
- Keep modern sealant off the mastic
- Ask the planning authority about consent for listed or conservation-area homes
- Do not paint over the new mastic
Keep paint scrapers and sanders off the mastic when redecorating. Hard scraping can loosen it.
An open joint round the box lets weather through. Left, the gap tends to get bigger.