Isle of Wight · England
Glazing & conservatory sealant in St Lawrence, Isle of Wight
Specialist glazing silicone for St Lawrence: careful preparation, the right product and tidy work. Ask us for a quick quote.
- Mouldy sealant around glass panels
- Leaks where conservatory glass meets the frame
- Shower screens leaking along the wall or tray
Glazing silicone in St Lawrence
Glass, frames and walls all move at different rates, and the silicone between them takes the strain. Once it splits or comes away, water finds a way through. We replace it with a glazing silicone that suits the glass and frame. We work on glass-to-glass joints, conservatory frames and glass-to-frame joints, and people most often call us about conservatory leaks at frame and glazing joints and failed joints on frameless glass.
Mastic can only go onto a dry, clean joint, so window work in St Lawrence is booked around the forecast. Let us know about access to all the frames, upstairs ones included.
Every job is covered by a one-year guarantee.
- Location
- St Lawrence (PO38)
- Region
- Isle of Wight
- Cover
- 12 months on all our work
- Quotes
- A clear price before any work starts
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Common problems we fix in St Lawrence
The wrong sealant is a common cause. Some products don’t bond well to glass, and acetoxy types can attack some frame materials.
It’s worth asking for a quote if you see:
- New silicone smeared over old sealant
- Black or yellowed silicone on glass joints
- Shower screens leaking along the wall or tray
- Failed joints on frameless glass
In the older streets around St Lawrence's Church, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
What your quote should include
- Is VAT in the price?
- Whether you can choose the colour
- Are they insured?
- Which sealant they’ll use, and why
What sealant work cannot fix
In fairness, there are a few things sealant will not fix:
- A sagging or failing conservatory roof
- A frame that needs repairing or replacing
- A broken pane or roof panel
If in doubt, phone 0345 464 0079 or drop us an email and we will say what we think before you book.
What we seal
- Glass balustrade bases
- Shower screens
- Glass-to-frame joints
- Rooflights
- Glass-to-glass joints
- Conservatory frames
What the job involves on each surface
Glass-to-frame joints
The sealant must stick to glass and frame alike. We use a glazing silicone suited to each.
Glass balustrade bases
Balustrade bases are exposed outdoors. A sound sealant joint keeps them tidy and dry.
Your questions about glazing silicone in St Lawrence
Is St Lawrence within the area you cover?
Yes, smaller places are covered as well as towns. Our work covers London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Can you help a landlord with a rental near Shanklin station?
Yes, landlords and agents are among the people we work for. Just call 0345 464 0079 or send us an email with the address and what needs doing, and we’ll give you a clear quote.
Will it make a mess?
Not at all. The area is protected while we work and cleaned up afterwards.
Do you fit new glass or sealed units?
No. We renew the sealant. Glass and sealed units need a glazier.
Do you do commercial work?
Yes. Hotels, offices and other businesses use us.
What sealant do you use on glazing?
A glazing silicone chosen for the joint. Neutral-cure silicone is the usual choice, as some acetoxy types can attack certain metals.
What should I tell you?
Let us know what needs doing and where, with pictures by email if possible. We’ll ask anything else we need to know.
Is it enough to run a bead over the old sealant?
Topping up is a common cause of leaks. We remove the old silicone, clean the joint and reseal.
Landlord and commercial work in St Lawrence
Businesses can book us for washrooms, kitchens, offices and more. For commercial premises, we can talk through working times when we quote.
In hotels, rooms out of use cost money, so the work can be planned room by room. Hotel work is part of what we do, alongside homes and businesses.
What affects the cost of glazing silicone
We do not publish a price list, because jobs vary so much. The quote depends on:
- How much old sealant there is and how hard it is to remove
- How many rooms, windows or areas are involved
- Which sealant suits the joint
- Whether the work is at height
Combining jobs into one visit normally makes better use of the time than several visits, so it’s worth mentioning everything you’d like done. We’ll send you a clear quote for the lot.
Asking for a quote
Photos help, but a description is a good start. Please mention:
- What the problem is, such as mould, gaps, leaks or cracking
- Photos by email, if that is easy
- Any access issues, like height or stairs
- The rough size of the job
Need a quote? Please phone 0345 464 0079 or email us and tell us about the job. You’ll know what we plan to do, and what it will cost, before any work begins.
How the visit works
At the end, we look at the finished work together. The visit itself normally takes anything from an hour or two to most of a day, depending on the size of the job, depending on the size of the job. Somewhere like St Lawrence 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 trace the leak and confirm it’s a sealant joint.
- We remove the old sealant carefully.
- The joint is cleaned and degreased.
- We lay the new bead and tool it smooth.
- Each joint is checked and, where possible, water-tested.
How to prepare
- Try not to wet indoor joints just before the visit
- Let us know about stairs, lifts or work at height
- Tell us about any water getting in
Ask for a quote
Call for a quick quote, or send an email if you’d rather. Tell us about the joints that need doing and we’ll talk you through the work and give you a clear price.
Advice
Glazing silicone in St Lawrence: local notes
St Lawrence is close to the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. Both are hard on glazing joints and frame seals, which can dry out and crack sooner where a building faces the weather. With historic houses such as Rylstone Manor (about 3.8 miles north-east) nearby, there’s older building stock in the area around St Lawrence 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’s traditional sand mastic.
For landlords with property near Shanklin station, glazing joints are worth checking at the end of a tenancy, before a small leak grows. If you look after a building such as St Francis Catholic and Church of England Primary Academy, the mastic around its windows and doors needs looking after like any other building’s.
St Lawrence is about 4 miles south-west of Shanklin, in the Isle of Wight. Wherever you are in the PO38 postcode area, we can carry out glazing silicone at your property. Our the Isle of Wight coverage runs to 125 places, and St Lawrence is one of them. Our Portsmouth page covers work nearby (17 miles or so).
Every address in PO38 is covered for glazing silicone. Whether your property is on Twining Road, Whitwell Road and Woolverton Road or a nearby road, we can help. Close by, we work in Steephill (1 mile east), Nettlecombe (1 mile north-west), Whitwell (1 mile north-west), Ventnor (1 mile east) and Bierley (2 miles north-west). We also work in nearby towns such as Newport (8 miles north), Ryde (10 miles north), Cowes (12 miles north), Sandown (6 miles north-east), Shanklin (4 miles north-east) and East Cowes (12 miles north). Island and remote addresses take a little more planning, so tell us where you are when you ask for a quote.
Around St Lawrence
In St Lawrence, that means homes and buildings near St Catherine's School, among other places. The nearest railway station is Shanklin station, roughly 4.1 miles north-east of the centre. A little further out are Arthur Webster Memorial Hospital for Children (4.1 miles north-east) and Longshoremans Museum (1.3 miles east). The countryside around St Lawrence includes Stenbury Down.
Why act early in St Lawrence
Fixing a leaking screen early protects what’s underneath. A small leak can reach the floor below before it shows. Older cottages and farmhouses around St Lawrence can have timber floors and frames, where water from a failed joint can cause rot if it’s left.
We do not show prices on the website, because each job is priced on what it involves. Call for a quick quote.
Why choose Mr Mastic in St Lawrence
- Sanitary silicone with an anti-fungal additive in wet areas
- Experience in homes, commercial sites and hotels
- ARBOMaster approved applicator
- We leave the area clean and tidy