Isle of Wight · England
Gurnard Sand Mastic
Specialist sand mastic for Gurnard: careful preparation, the right product and tidy work. Call for a quick quote.
- Failed mastic on an exposed elevation
- Draughty sash windows at the surround
- Modern sealant on a period surround
How we handle sand mastic in Gurnard
Burnt sand mastic is a traditional material that sits naturally against stone and brick. It suits period and listed homes where a modern sealant bead would stand out. If you have draughts and rain around sash boxes and window mastic to renew ahead of painting, we can put it right.
Mastic can only go onto a dry, clean joint, so window work in Gurnard is booked around the forecast. Let us know about access to all the frames, upstairs ones included.
Every job comes with our 12-month guarantee, wherever you are in the Isle of Wight.
- Place
- Gurnard (PO31)
- Wider area
- Isle of Wight
- Guarantee
- A year, on every job
- Price
- A clear price before work begins
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
DIY versus a professional finish
Sealing over old silicone is the commonest DIY error. New silicone won’t bond to old, so it peels away and traps moisture behind it. All the old material has to come out first.
If you are set on DIY, put the effort into preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it doesn’t work out, we can still put it right.
Questions from Gurnard
Do you cover Gurnard for sand mastic?
Yes, Gurnard is within the area we cover. Our work covers London and the South East. You can call 0345 464 0079 or email us and let us know what needs doing, and we will send you a clear quote.
Is sand mastic in a coastal place like Gurnard any different?
Near the sea, outside joints face more wind, rain and salt than they would inland, so the choice of sealant and the preparation matter even more. It’s worth checking the walls that face the sea first.
Is there any odour?
That depends on the sealant. Some smell for a while, some hardly at all, and any smell fades as they cure.
Do you take out the old sealant first?
Yes. All of the old material is cut out and the joint cleaned before resealing.
What does sand mastic cost?
We don’t publish prices, because the cost depends on the job: its size, the old material, access and the product needed. You’ll get a clear quote before we start.
Will it make a mess?
Tidy work is part of the job. Nearby surfaces are protected, and we clear up when we are done.
How long does sand mastic take to go off?
Not straight away. It skins first and hardens fully later, and we’ll tell you what to expect.
Can you work on commercial sites?
Yes. Larger jobs can be planned room by room or area by area.
Why it’s worth doing now in Gurnard
New sash windows are a major, costly change, and in listed buildings it may need consent. If the frames are sound, renewing the mastic deals with gaps and draughts at the surround. Older cottages and farmhouses around Gurnard can have timber floors and frames, where water from a failed joint can cause rot if it’s left.
What you pay reflects the work, not a rough estimate. That is why we ask about the job first and agree the price before starting.
What you get with us
- Quality sealants from Arbo and Everbuild
- Any old sealant cut out fully, not covered over
- Every job guaranteed for a year
- Domestic, commercial and hotel work
Sand mastic in Gurnard: local notes
Gurnard is within about 1 mile of the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. That is hard on the mastic around older windows and doors, especially on the side facing the sea. 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.
Homes close to All Saints' Church include some older properties, and the joint between an old wall and a newer frame is generally the first place rain gets in. For site and facilities teams at buildings such as Gurnard Primary School, the mastic around its windows and doors needs looking after like any other building’s.
Gurnard is about 1 mile west of Cowes, in the Isle of Wight. Every kind of property in Gurnard can book us for sand mastic, old or new, large or small. The work is guaranteed for a year. Gurnard is one of 125 places in the Isle of Wight where we work. Portsmouth is on our list too, around 11 miles away.
Postcode districts we cover here for sand mastic: PO31. We cover properties on Cow Lane, The Avenue and Shore Road and the roads around them. We also cover the places around Gurnard: Cowes (1 mile east), Northwood (1 mile south), Rew Street (1 mile south-west), Great Thorness (2 miles south-west) and Noke Common (2 miles south). Further out, we also cover Newport (4 miles south), Ryde (7 miles east), Sandown (10 miles south-east), Shanklin (11 miles south-east), Ventnor (12 miles south-east) and Oakfield (8 miles east). Remote and island addresses need a little more planning, so tell us where you are when you ask for a quote.
Around Gurnard
Locally, jobs take us to homes and businesses close to Cowes Enterprise College and The Portland Inn, among other places. Other landmarks nearby include St Mary's Hospital (3.2 miles south) and Isle of Wight Natural History Centre (0.5 miles south-east). Not far away are Mill Hill and Briddlesford Nature Reserve.
How we quote for sand mastic
Some jobs are bigger than they look, and some smaller. The main factors:
- Working hours on commercial sites
- How many rooms, windows or areas are involved
- Mould in or behind the old joints
- The number and length of the joints
No two jobs are quite the same, so each one gets its own quote. Size, access and the product the joint needs all make a difference, and we’ll explain the quote if you ask.
Helping us quote
What to tell us when you ask for a quote:
- Where the property is
- If it’s domestic, commercial or a hotel
- How many joints, rooms or windows are involved
- Whether it has been sealed before
For a quick quote, get us on the phone, or email us if that’s easier. Tell us about the joints that need doing and we will talk you through the work.
Also near Gurnard
Other services in Gurnard
How the job changes by surface
Period and listed homes
Period homes look their best with traditional materials, and sand mastic is one of them.
Tenement and terrace windows
Tenements and terraces often have many sash windows with ageing mastic. We can do one window or several.
What we cannot put right
We will always be straight with you, so here’s what sealant can’t fix:
- Whether work needs listed building consent
- Masonry that needs repairing
- Sash cords, weights and draught-proofing of the sashes
If in doubt, ring 0345 464 0079 or send us an email and we’ll say what we think before you book.
What we seal
- Sash and case windows
- Timber door frames
- Brick reveals
- Period & listed homes
- Tenement windows
- Stone surrounds
Landlord and commercial work in Gurnard
Mouldy or split sealant often shows up at the end of a tenancy. Several properties can go on one quote.
Whether it’s one flat or a portfolio, the work is the same standard: old sealant fully removed, joints prepared properly and a one-year guarantee.
How the visit works
Most of a good job is in the preparation, so that is where we spend the time. Joints are cleaned back and dried before anything new goes in. In total, it usually takes a few hours for a single window, longer for several. Somewhere as small as Gurnard, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- First, we look at the surrounds with you and agree what needs doing.
- We rake out the old mastic and clean the joint.
- Deep voids are packed so the mastic is the right thickness.
- We mix the sand mastic and apply it by hand, shaping it to the joint.
- The finish is dressed so it sits neatly against the stone or brick.
Getting ready for the visit
- Mention any parking rules near the property
- For business premises, tell us about site rules or sign-in
- Keep children and pets away from the work area
Ask for a quote
Want a quote for sand mastic? Please ring 0345 464 0079 or email us and tell us about the job. You will know what we plan to do, and what it will cost, before any work begins.