West Sussex · England
Glazing & conservatory sealant in South Mundham, West Sussex
Glazing silicone for conservatories, rooflights, glass panels and shower screens in South Mundham, with a one-year guarantee on every job. Call for a quick quote.
- Water tracking down the inner face of the glass
- Water escaping where a screen meets the wall
- Black or yellowed silicone on glass joints
Glazing silicone in South Mundham, done properly
We don’t replace glass and a misted double-glazed unit needs a glazier. Our work is the sealant joints, which is where many leaks start. We are often asked to deal with black or yellowed silicone on glass joints and failed joints on frameless glass, across glass-to-frame joints, shower screens and conservatory frames.
Homes in small places like South Mundham 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.
All of our work is guaranteed for twelve months.
- Place
- South Mundham (PO20)
- Wider area
- West Sussex
- Cover
- A year, on every job
- Price
- A clear quote up front
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
South Mundham questions
Will you come out to South Mundham?
Yes, South Mundham is covered. We work across London and the South East, and smaller places are part of that. The journey is planned ahead, so it helps to know about access.
Does living near the coast affect glazing silicone in South Mundham?
Near the coast, wind-driven rain and, nearer the shore, salt air make outside sealant work harder. Choosing the right sealant for the frame and wall, laid at the right depth, helps it last.
Do you work for letting agents?
Yes. We work for homeowners, landlords, letting agents, businesses and hotels in South Mundham.
What sealant do you use on glazing?
We use a neutral-cure glazing silicone that suits the glass and frame. Shower screens get anti-fungal silicone.
Can you match the sealant colour?
In most cases you can choose. We will tell you which colours the right product comes in.
Do you have insurance?
Yes. Mr Mastic is fully insured, and we have been doing sealant work for more than 20 years.
What information do you need?
The location, the problem and the rough size of the job. Photos by email help too.
Can you fix a leaking conservatory?
In many cases, as long as sealant is the cause. We find where the water gets in first before any sealing.
Landlord and commercial work in South Mundham
Businesses can book us for washrooms, kitchens, offices and more. For commercial premises, we can talk through working times when we quote.
Letting agents and landlords in South Mundham can book us as well as householders. Resealing between tenancies keeps a property looking cared for before the next move-in.
What we are called out for in South Mundham
UV light ages silicone, especially on conservatory roofs. Old silicone hardens, cracks and loses its grip to the glass and frame.
Any of these means the joints need attention:
- Failed joints on frameless glass
- Leaking glazing joints on a rooflight
- Water running down inside the glass
- Leaks from the base of a shower screen
For site and facilities teams at buildings such as North Mundham Primary School, larger buildings have plenty of frames, and the mastic around each one ages.
What your quote should include
- How the colour is chosen
- What product goes in the joint
- How long to leave it before use
- What happens if the job turns out different
The process
We work through the job in order: protection first, then preparation, sealing and a tidy-up. Typically it takes anything from an hour or two to most of a day, depending on the size of the job. For a village or hamlet like South Mundham, the journey is planned in advance: tell us about narrow lanes, gates, long drives and where we can park. Everything for the job comes with us, so a second trip is avoided where possible.
- First we agree the joints to be done.
- We cut away the failed silicone.
- We clean and prepare the joint.
- New glazing silicone goes in and is finished neatly.
- We inspect the work and test it where we can.
How to prepare
- Let us know about earlier repairs to the joints
- Clear items away from the joints we’re working on
- Keep children and pets away from the work area
Get a quote
The more we know about the job, the more useful the quote. Let us know the location, the problem and roughly how many joints, and email photos if that is easy.
Advice
When it is not the sealant
Honest advice matters more to us than a booking, so here’s what new sealant won’t do:
- Condensation trapped between two panes
- Frames that have decayed or split
- A sagging or failing conservatory roof
If you’re not sure, just phone 0345 464 0079 or send us an email and we will give you a straight answer.
What we seal
- Glass-to-glass joints
- Rooflights
- Glass balustrade bases
- Shower screens
- Glass-to-frame joints
- Conservatory frames
Glazing silicone in South Mundham: local notes
South Mundham is within about 2 miles of 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. London and the South East are among 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 The Parish Church of St Stephen, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall. If you let a flat or house near Chichester station, glazing joints are worth checking at the end of a tenancy, before a small leak grows.
South Mundham is about 3 miles south of Chichester, in West Sussex. Wherever you are in the PO20 postcode area, we cover glazing silicone for homes and businesses. Our area takes in 371 places across West Sussex. Portsmouth is on our list too, about 14 miles from South Mundham.
Postcode districts we cover here for glazing silicone: PO20. We cover properties on Manor Lane and Honer Lane. We also cover Fisher (1 mile west), Street End (2 miles south-west), Sidlesham Common (2 miles west), Nyetimber (2 miles south-east) and Sidlesham (2 miles south-west). Larger places within reach include Bognor Regis (3 miles east), Chichester (3 miles north), Selsey (5 miles south), Littlehampton (10 miles east), Emsworth (9 miles north-west) and Rustington (11 miles east).
What’s near South Mundham
In South Mundham, that means homes and buildings near Chichester High School For Girls and Avisford and the streets around them. The closest station to South Mundham is Chichester station, roughly 2.5 miles north-west of the centre. Well-known places in the area include Chichester Castle (3 miles north) and Chichester Cathedral Treasury (2.7 miles north-west).
What happens if it’s left?
Replacing windows or a shower screen is not needed for a failed joint. Sound glass and frames usually just need resealing, and we’ll tell you if that’s not the case. In a small place like South Mundham, homes can be exposed to wind and rain, which finds any gap, and older walls, once damp, take a long time to dry.
The cost reflects the work involved, not a rough estimate. That’s why we ask a few questions first.
Why book with us
- Sealant colour chosen to suit
- Old sealant always removed completely
- Full insurance on every job
- White, clear, grey or another colour, product permitting
See what affects the cost and customer reviews.
Should I try it myself first?
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and the joint depth matters as much as the finish.
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 does not work out, we can still put it right.
Also near South Mundham
Also in South Mundham
What affects the quote in South Mundham
We don’t publish a price list. What we look at:
- The old material and how stubborn it is
- The number and length of the joints
- When we can work, for business premises
- Whether there’s mould to deal with
Doing several joints on one visit generally makes better use of the time than several visits, so it’s worth mentioning everything you’d like done. You’ll get one clear quote for the whole job.
What we need to know
A few details help us give you an accurate quote. When you get in contact, it helps to mention:
- Whether it’s a home or a business
- Roughly how big the job is
- Access, such as stairs, a lift or height
- What’s wrong with the joints now
For a quote, ring 0345 464 0079 or send us an email and tell us where the job is and what the problem looks like. You will have a clear quote before we start.