Isle of Wight · England
Glazing & conservatory sealant in Whitwell, Isle of Wight
Professional glazing silicone in and around Whitwell, with old sealant always removed completely and a 12-month guarantee.
- Black or yellowed silicone on glass joints
- A quick top-up bead that didn’t last
- Glazing silicone that has cracked or come away
Glazing silicone in Whitwell
Glass and frames expand and contract differently, so the sealant between them does a lot of work. When it cracks or lets go, water gets in. We cut it out and reseal with a glazing silicone suited to the joint. If you are dealing with glazing silicone that has cracked or come away and stained, discoloured glazing silicone, we can put it right, whatever the surface.
Homes in small places like Whitwell 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.
The work is covered for a year after we finish. If anything isn’t right with it, call 0345 464 0079 or email us.
- Place
- Whitwell (PO38)
- Region
- Isle of Wight
- Cover
- One year on every job
- Price
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
When something else is needed
Honest advice matters more to us than a booking, so here’s what new sealant will not do:
- A sealed unit that has misted inside
- Frames that have decayed or split
- Failed flashing around a conservatory
If in doubt, ring 0345 464 0079 or drop us an email and we will say what we think before you book.
Joints and surfaces we work on
- Rooflights
- Glass-to-frame joints
- Conservatory frames
- Shower screens
- Glass balustrade bases
- Glass-to-glass joints
How it works
At the end, we look at the finished work together and tell you how long to leave it. The work normally takes anything from an hour or two to most of a day, depending on the size of the job, depending on how much there is to do. Somewhere as small as Whitwell, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We find where water is getting in and check whether it’s a sealant joint.
- The old sealant is removed from the glass and frame without scratching them.
- We clean the joint with a solvent that suits the glass and frame.
- New glazing silicone goes in and is tooled to a neat finish.
- We check the joints and, where safe, run water over them.
Getting ready for the visit
- For indoor joints, keep the area dry beforehand if you can
- Mention any leaks or damp you’ve noticed
- Clear items away from the joints we are working on
Get a quote
We quote each job on its own. Just ring 0345 464 0079 or drop us an email with the details, and pictures are welcome.
Advice
Why deal with it now?
You don’t need new glazing because the sealant has gone. If the glass and frame are sound, new silicone is often all it takes, and we’ll tell you if that’s not the case. Older cottages and farmhouses around Whitwell can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
Rather than a set price list, we look at what your job involves: the amount of work, the old material and the access. The price is agreed before we begin.
What you get with us
- A sealant colour to suit the surroundings
- A 12-month guarantee on all work
- Anti-fungal silicone where joints get wet
- Fully insured
See what affects the cost and our reviews.
Quotes for glazing silicone in Whitwell
You will get a clear quote before work begins. It takes into account:
- The product the joint needs
- The size of the job
- Whether the work is at height
- Whether old sealant or filler has to be cut out
A failed joint rarely gets cheaper to fix by waiting, because water and mould keep working on it. If you are unsure, call 0345 464 0079 or send us an email and we will give you an honest view and a quote.
What we need to know
Photos help, but a description is a good start. Try to tell us:
- If someone has resealed it before
- The type of property
- Pictures of the joints, sent by email
- Where the job is, and your postcode
For a quick quote, get us on the phone, or email us if that’s easier. Describe what needs sealing and we will talk you through the work before giving you a price.
Looking after it afterwards
No joint lasts for ever, but care makes a real difference. A few tips:
- Keep air moving in the conservatory
- Squeegee the shower screen after each use
- Stick to mild cleaners on glass
- Keep scrapers and blades away from the silicone
Keep conservatory gutters clear so water doesn’t back up against the seals. Overflowing gutters can cause leaks of their own.
Drips or damp near a glazing joint shouldn’t be ignored. The cause may be sealant or another part and we’ll find out which.
What glazing silicone looks like in Whitwell
Whitwell is within about 1 mile of the coast, and homes near the sea take more wind-driven rain, with salt in the air closer to the shore. That is hard on glazing joints and frame seals, especially on the side facing the sea. With historic houses such as Sheat Manor (about 4.4 miles north) nearby, there’s older building stock in the area around Whitwell as well as newer homes. Where a home is older, older frames set in brick or stone need a sealant that suits them, and sometimes that is traditional sand mastic.
If you live in an older home near Church of St. Mary and St. Radegund, frames set in older brick or stone need a sealant that suits the wall as well as the frame. If you let a flat or house near Shanklin station, leaking glazing joints, shower screens or conservatory seals are worth sorting between tenancies.
Whitwell is about 7 miles south of Newport, in the Isle of Wight. Across the PO38 area, we can carry out glazing silicone at your property. Whitwell is one of 125 towns and villages in the Isle of Wight where we work for glazing silicone. Our Portsmouth page covers work nearby (17 miles or so).
We work across the PO38 postcode area for glazing silicone. Streets in the area include High Street, Bannock Road and Nettlecombe Lane, all of which we cover. Neighbouring places we cover for glazing silicone include Nettlecombe (1 mile north-east), Bierley (1 mile west), Southford (1 mile north-west), Niton (1 mile south-west) and St Lawrence (1 mile south-east). We also work in nearby towns such as Newport (7 miles north), Ryde (10 miles north-east), Cowes (11 miles north), Sandown (6 miles north-east), Shanklin (4 miles north-east) and East Cowes (11 miles north). If you are somewhere remote, the job takes a little more planning, so let us know when you get in touch.
Near you in Whitwell
Locally, jobs take us to homes and businesses close to The White Horse Inn. The nearest railway station is Shanklin station, roughly 4.5 miles north-east of the centre. Well-known places in the area include Arthur Webster Memorial Hospital for Children (4.5 miles north-east) and Blackgang Sawmill Museum (2.2 miles west). Not far away are Stenbury Down.
DIY sealant or a professional job?
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
If you do try it yourself, take your time over the preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it fails, we can still redo it.
Your questions about glazing silicone in Whitwell
Will you come out to Whitwell?
Yes, smaller places are covered as well as towns. Our work covers London and the South East. Just mention lanes, gates or anything else about the route when you book.
I let a flat near Shanklin station. Can you help?
Yes. We work for landlords and agents as well as householders, and several properties can be quoted together. Just phone 0345 464 0079 or email us with the address and what needs doing, and we will give you a clear quote.
How long does glazing silicone take?
A typical job takes a few hours, depending on how many joints need doing. We will confirm how long when we quote.
Where is Mr Mastic based?
We are a Crawley-based firm, with over 20 years’ experience. Our area covers South East England, London and Scotland.
Will the old sealant be removed?
Yes, every time. New silicone does not stick to old silicone, so the joint is cleaned back first.
Do you hold any approvals?
Yes. Mr Mastic is an ARBOMaster approved applicator.
How long should I leave it?
That depends on the sealant used, so follow the cure time we give you when we finish.
Can I do it myself?
It depends on the job. Work at height, movement joints, fire-rated gaps and large areas are best left to a professional.
Also near Whitwell
Also in Whitwell
Common problems we fix in Whitwell
New silicone over old silicone won’t bond. Many failed joints we see have been topped up rather than cut out, and water gets between the layers.
If you can see any of these, it’s time to have the joints looked at:
- Water getting into a conservatory at the joints
- New silicone smeared over old sealant
- Leaking glazing joints on a rooflight
- Water escaping where a screen meets the wall
Schools such as Niton Primary School are buildings too, and its window and door frames need their mastic kept sound, just like a home’s.
Comparing quotes
- What the quote includes, VAT included or not
- How much experience the applicator has
- What the cure time is
- The length of the guarantee