Portsmouth · England
Glazing & conservatory sealant in Portsmouth
We cover Portsmouth for glazing silicone for conservatories, rooflights, glass panels and shower screens. Old sealant removed completely, joints prepared properly and every job guaranteed for a year.
- A quick top-up bead that didn’t last
- Mouldy sealant around glass panels
- Water tracking down the inner face of the glass
What affects the cost of glazing silicone
You’ll get a clear quote before work begins. It’s based on:
- Whether the work is at height
- Whether old sealant or filler has to be cut out
- Mould in or behind the old joints
- Which sealant suits the joint
Combining jobs into one visit is generally more efficient than separate visits, so tell us about everything that needs sealing. We will give you a clear price for the lot.
What to tell us for a quote
To make quoting easier, let us know:
- Pictures of the joints, sent by email
- The problem you’ve noticed
- Where the job is, and your postcode
- How we’d reach the joints
Call for a quick quote, or email us if that’s easier. Tell us about the joints that need doing and we will explain what’s involved and give you a clear price.
About our glazing silicone in Portsmouth
Glass replacement is not something we do, and misting between panes means a failed sealed unit. What we do is the silicone around the glass, which is where many leaks start. Common call-outs are for conservatory leaks at frame and glazing joints and leaking glazing joints on a rooflight, on glass balustrade bases, rooflights and glass-to-frame joints.
With a large rental market, Portsmouth has plenty of windows that landlords need to keep weathertight. Cracked or missing mastic round a frame is a common cause of damp patches and draughts.
We stand behind the work with a one-year guarantee, so you are covered after we’ve gone.
- Location
- Portsmouth (PO6, PO4, PO1, PO2)
- Wider area
- Portsmouth
- Guarantee
- 12 months on all our work
- Quotes
- A clear quote up front
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Leave it or put it right?
Dealing with a leaking shower screen early protects the floor and ceiling. A small leak can reach the floor below before you notice. In flats, shops and offices in Portsmouth, a failed joint can let water into the unit below or behind a wall, where it’s often found late and is bigger to put right.
The cost reflects the work involved, not guesswork. That’s why we ask a few questions first and agree the price before starting.
Why book with us
- Over 20 years’ experience
- Approved under the ARBOMaster scheme
- Colour agreed with you before work begins
- Sanitary silicone with an anti-fungal additive in wet areas
See what affects the cost or our reviews.
Portsmouth homes and the weather
Portsmouth 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. 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.
Rented homes near Fratton station change hands often, and glazing joints are worth checking at the end of a tenancy, before a small leak grows. If you live in an older home near St Wilfrid, frames set in older brick or stone need a sealant that suits the wall as well as the frame.
Portsmouth is in England. Every kind of property in Portsmouth can book us for glazing silicone, old or new, large or small. The work is guaranteed for a year. 19 places in Portsmouth are on our list, from the larger towns to small villages.
We work across the PO6, PO4, PO1 and PO2 postcode area for glazing silicone. If you need glazing silicone at a property on Church Road, April Square and Rudmore Square or a nearby road, we can help. With the A3 and A27 close by, Portsmouth is simple for us to get to for glazing silicone. We also cover Rudmore (1 mile north-west), Landport (1 mile south-west), North End (1 mile north), Fratton (1 mile south-east) and Kingston (1 mile south-east). Within a short drive, we also cover Wymering (3 miles north), Paulsgrove (3 miles north), Drayton (3 miles north-east) and Farlington (3 miles north-east).
Near you in Portsmouth
Locally, jobs take us to homes and businesses close to The Portsmouth Academy, Alexandra Park and St Edmund's Catholic School, among other places. For rail, the closest station is Fratton station, about 0.9 miles south of the centre. Well-known places in the area include Royal Portsmouth Hospital (0.7 miles south-west) and Charles Dickens Birthplace Museum (under half a mile west). The countryside around Portsmouth includes Milton Locks and Portsdown Hill.
FAQs for Portsmouth
Is glazing silicone in a coastal place like Portsmouth 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. Walls facing the sea are normally the first to need attention.
Is Portsmouth in your area for glazing silicone?
Yes. We work across London and the South East, and Portsmouth is part of that. You can ring 0345 464 0079 or email us and tell us what needs doing, and we will give you a clear price.
What does glazing silicone cost?
The cost depends on the size of the job, access and how much old sealant has to come out. Ask us for a quote and we will talk you through it.
Can you just put new silicone over the old?
Topping up is a common cause of leaks. A proper job means cutting out, cleaning and resealing.
Is it possible to redo the silicone on a shower screen?
Yes, it’s a common job. We use anti-fungal silicone made for wet areas.
Can you replace a misted double-glazed unit?
That is not something we do. Misting between panes means the sealed unit has failed and needs replacing by a glazier.
Can you fix a leaking conservatory?
Yes, when the leak is a failed sealant joint. If the cause is the roof, a panel or a unit, we will say so.
Do you guarantee glazing sealant work?
All our work has a 12-month guarantee.
Also in Portsmouth
How it works
Good joint work is mostly preparation, and we do not rush it. Every joint is cleaned and dried before new material goes in. In total, it generally takes a few hours, depending on how many joints need doing. For homes and businesses in busier parts of Portsmouth, parking needs a little planning. For flats, mention stairs, lifts and shared entrances as well.
- We find where water is getting in and check whether it’s a sealant joint.
- Old silicone is cut away from the glass and frame without scratching either.
- Surfaces are cleaned with a solvent suited to glass and the frame.
- New glazing silicone goes in and is tooled to a neat finish.
- We look over every joint and, where we can, test it with water.
Preparing for the visit
- Mention any parking rules near the property
- Plan for the work area to be out of bounds to pets and children
- Clear items away from the joints we’re working on
Getting a quote
Quotes start with a quick conversation. Tell us what’s wrong, where it is and how much there is, and we will talk you through what we’d do. When it suits you, ring 0345 464 0079 or send us an email.
Advice
Landlord and commercial work in Portsmouth
If you manage several properties in or around Portsmouth, several properties can go on one quote. Just tell us the addresses and what each one needs, and pictures by email help.
We also work for businesses, from offices to washrooms and kitchens. On commercial sites, working times can be discussed when we quote.
Surface by surface
Shower screens
Black or peeling silicone on a screen lets water out. A full reseal sorts it.
Rooflights
Rooflights get the full force of the weather. The sealant around the glass and frame wears faster than most.
When it is not the sealant
A few problems are outside what sealant work can do:
- Cracked or broken glass
- A roof that has moved or dropped
- Water coming through the roof rather than a sealant joint
Not sure which it is? You can phone 0345 464 0079 or send us an email and we’ll tell you honestly before you book.
Joints and surfaces we work on
- Conservatory frames
- Glass-to-frame joints
- Glass balustrade bases
- Shower screens
- Glass-to-glass joints
- Rooflights
Do you need glazing silicone in Portsmouth?
New silicone over old silicone will not bond. Many failed joints we see have been topped up rather than cut out, and water gets between the layers.
Common reasons people contact us include:
- Cracked silicone between glass panels
- Sealant that was laid over old silicone and failed
- Leaks where conservatory glass meets the frame
- Water tracking down the inner face of the glass
If you look after a building such as Manor Infant School, the mastic around its windows and doors needs looking after like any other building’s.
Comparing quotes
- Is VAT in the price?
- Whether they’re fully insured
- When the joint can take water or movement
- Whether you can choose the colour